package topdata

import (
	"encoding/json"
	"os"
	"path/filepath"
	"strings"
	"testing"
	"time"
)

func TestBuildNativeGeneratesAndSkipsWikiPages(t *testing.T) {
	root := testProjectRoot(t)
	mkdirAll(t, filepath.Join(root, "topdata", "data", "skills"))
	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "base.json"), `{
  "output": "skills.2da",
  "columns": ["Label", "Name", "Description", "HideFromLevelUp", "Untrained", "KeyAbility", "ArmorCheckPenalty", "Constant"],
  "rows": [
    {
      "id": 0,
      "key": "skills:athletics",
      "Label": "Athletics",
      "Name": {"tlk": {"key": "skills:athletics.name", "text": "Athletics"}},
      "Description": {"tlk": {"key": "skills:athletics.description", "text": "Ability: Strength.\n\nUses:\n- Climb\n- Swim"}},
      "HideFromLevelUp": "0",
      "Untrained": "1",
      "KeyAbility": "STR",
      "ArmorCheckPenalty": "1",
      "Constant": "SKILL_ATHLETICS"
    }
  ]
}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "lock.json"), `{"skills:athletics":0}`+"\n")

	proj := testProject(root)
	proj.Config.TopData.ReferenceBuilder = ""

	result, err := BuildNative(proj, nil)
	if err != nil {
		t.Fatalf("BuildNative failed: %v", err)
	}
	generatedHTMLCount := countGeneratedWikiHTMLFiles(t, filepath.Join(root, ".cache", "wiki", "pages"))
	if result.WikiPages != generatedHTMLCount {
		t.Fatalf("expected wiki page count to match generated HTML files, got result=%d files=%d", result.WikiPages, generatedHTMLCount)
	}
	pagePath := filepath.Join(root, ".cache", "wiki", "pages", "skills", "Athletics.html")
	got, err := os.ReadFile(pagePath)
	if err != nil {
		t.Fatalf("read generated page: %v", err)
	}
	text := string(got)
	if !strings.Contains(text, "<h1>Athletics</h1>") || !strings.Contains(text, `class="wiki-callout wiki-callout--status"`) || !strings.Contains(text, "This skill is unchanged from vanilla.") {
		t.Fatalf("unexpected generated page:\n%s", text)
	}
	if !strings.Contains(text, `<!-- sow-topdata-wiki:page=skills:athletics -->`) || strings.Contains(text, `wiki_slug=`) || !strings.Contains(text, `<!-- sow-topdata-wiki:managed:start hash="sha256:`) || !strings.Contains(text, "Ability: Strength.") || !strings.Contains(text, "<li>Climb</li>") {
		t.Fatalf("expected HTML managed markers and description to be rendered into wiki page:\n%s", text)
	}
	if strings.Contains(text, "[//]: #") || strings.Contains(text, "<WRAP>") {
		t.Fatalf("expected generated HTML to omit DokuWiki-era syntax:\n%s", text)
	}
	if !strings.Contains(text, `<!-- sow-topdata-wiki:manual:start id="user_bottom" -->`) {
		t.Fatalf("expected generated page to include user_bottom manual section placeholder:\n%s", text)
	}
	if strings.Contains(text, `manual:start id="notes"`) || strings.Contains(text, `manual:start id="see_also"`) || strings.Contains(text, "<h2>See Also</h2>") {
		t.Fatalf("expected generated page to omit legacy split bottom manual sections:\n%s", text)
	}
	statusPath := filepath.Join(root, ".cache", "wiki", "pages", "meta", "wikistatus.html")
	statusRaw, err := os.ReadFile(statusPath)
	if err != nil {
		t.Fatalf("read status page: %v", err)
	}
	if !strings.Contains(string(statusRaw), "<th>Vanilla</th><td>1</td>") {
		t.Fatalf("expected wiki status summary to count vanilla page:\n%s", string(statusRaw))
	}
	indexRaw, err := os.ReadFile(filepath.Join(root, ".cache", "wiki", "page-index.json"))
	if err != nil {
		t.Fatalf("read page index: %v", err)
	}
	var pageIndex wikiPageIndex
	if err := json.Unmarshal(indexRaw, &pageIndex); err != nil {
		t.Fatalf("parse page index: %v", err)
	}
	if len(pageIndex.Pages) != generatedHTMLCount {
		t.Fatalf("expected page-index entries to match generated HTML files, got index=%d files=%d", len(pageIndex.Pages), generatedHTMLCount)
	}
	indexText := string(indexRaw)
	if !strings.Contains(indexText, `"page_id": "skills:athletics"`) || !strings.Contains(indexText, `"public_path": "Skills/Athletics"`) || strings.Contains(indexText, `"public_slug"`) || !strings.Contains(indexText, `"output_path": "pages/skills/Athletics.html"`) || !strings.Contains(indexText, `"edit_policy": "preserve_manual_sections"`) {
		t.Fatalf("expected deterministic page-index metadata, got:\n%s", indexText)
	}
	if !strings.Contains(indexText, `"page_id": "meta:wikistatus"`) || !strings.Contains(indexText, `"output_path": "pages/meta/wikistatus.html"`) || !strings.Contains(indexText, `"edit_policy": "generated_only"`) {
		t.Fatalf("expected status pages in page-index metadata, got:\n%s", indexText)
	}
	if _, err := os.Stat(filepath.Join(root, ".cache", "wiki", "state.json")); err != nil {
		t.Fatalf("expected state file after first build: %v", err)
	}
	stateBefore, err := loadWikiState(filepath.Join(root, ".cache", "wiki", "state.json"))
	if err != nil {
		t.Fatalf("read state before second build: %v", err)
	}
	digestBefore, err := computeWikiSourceDigest(filepath.Join(root, "topdata"))
	if err != nil {
		t.Fatalf("compute digest before second build: %v", err)
	}
	if stateBefore.Digest != digestBefore {
		t.Fatalf("expected state digest to match current digest before second build, got state=%s current=%s", stateBefore.Digest, digestBefore)
	}

	second, err := BuildNative(proj, nil)
	if err != nil {
		t.Fatalf("second BuildNative failed: %v", err)
	}
	if second.WikiPages != generatedHTMLCount {
		t.Fatalf("expected generated wiki page count after rebuild to remain stable, got %d want %d", second.WikiPages, generatedHTMLCount)
	}
}

func TestBuildWikiRegeneratesMissingCachedPages(t *testing.T) {
	root := testProjectRoot(t)
	mkdirAll(t, filepath.Join(root, "topdata", "data", "skills"))
	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "base.json"), `{
  "output": "skills.2da",
  "columns": ["Label", "Name", "Description", "HideFromLevelUp", "Untrained", "KeyAbility", "ArmorCheckPenalty", "Constant"],
  "rows": [
    {
      "id": 0,
      "key": "skills:athletics",
      "Label": "Athletics",
      "Name": {"tlk": {"key": "skills:athletics.name", "text": "Athletics"}},
      "Description": {"tlk": {"key": "skills:athletics.description", "text": "Ability: Strength."}},
      "HideFromLevelUp": "0",
      "Untrained": "1",
      "KeyAbility": "STR",
      "ArmorCheckPenalty": "1",
      "Constant": "SKILL_ATHLETICS"
    }
  ]
}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "lock.json"), `{"skills:athletics":0}`+"\n")

	proj := testProject(root)
	proj.Config.TopData.ReferenceBuilder = ""
	if _, err := BuildNative(proj, nil); err != nil {
		t.Fatalf("BuildNative failed: %v", err)
	}

	pagesDir := filepath.Join(root, ".cache", "wiki", "pages")
	if err := os.RemoveAll(pagesDir); err != nil {
		t.Fatalf("remove generated wiki pages: %v", err)
	}
	if err := os.MkdirAll(pagesDir, 0o755); err != nil {
		t.Fatalf("recreate empty wiki pages dir: %v", err)
	}

	result, err := BuildWikiWithOptions(proj, BuildWikiOptions{}, nil)
	if err != nil {
		t.Fatalf("BuildWikiWithOptions failed: %v", err)
	}
	if result.Status != wikiGeneratedStatus {
		t.Fatalf("expected missing cached pages to regenerate, got wiki status %q", result.Status)
	}
	if _, err := os.Stat(filepath.Join(pagesDir, "skills", "Athletics.html")); err != nil {
		t.Fatalf("expected regenerated skill page: %v", err)
	}

	if err := os.RemoveAll(pagesDir); err != nil {
		t.Fatalf("remove regenerated wiki pages: %v", err)
	}
	if err := os.MkdirAll(pagesDir, 0o755); err != nil {
		t.Fatalf("recreate empty wiki pages dir before native build: %v", err)
	}

	nativeResult, err := BuildNative(proj, nil)
	if err != nil {
		t.Fatalf("BuildNative with missing cached pages failed: %v", err)
	}
	if nativeResult.WikiStatus != wikiGeneratedStatus {
		t.Fatalf("expected native build to regenerate missing cached pages, got wiki status %q", nativeResult.WikiStatus)
	}
}

func TestBuildNativeIndexesUnregisteredStatusPagesWithDeclaredNamespacePath(t *testing.T) {
	root := testProjectRoot(t)
	mkdirAll(t, filepath.Join(root, "topdata", "data", "skills"))
	mkdirAll(t, filepath.Join(root, "topdata", "wiki"))
	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
	writeFile(t, filepath.Join(root, "topdata", "wiki", "namespaces.yaml"), `
namespaces:
  - id: meta
    title: Wiki Status
    canonical_path: Wiki/Status
    category_env: SOW_WIKI_META_CID
    edit_policy: generated_only
`)
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "base.json"), `{
  "output": "skills.2da",
  "columns": ["Label", "Name", "Description", "HideFromLevelUp", "Untrained", "KeyAbility", "ArmorCheckPenalty", "Constant"],
  "rows": [
    {
      "id": 0,
      "key": "skills:athletics",
      "Label": "Athletics",
      "Name": {"tlk": {"key": "skills:athletics.name", "text": "Athletics"}},
      "Description": {"tlk": {"key": "skills:athletics.description", "text": "Ability: Strength."}},
      "HideFromLevelUp": "0",
      "Untrained": "1",
      "KeyAbility": "STR",
      "ArmorCheckPenalty": "1",
      "Constant": "SKILL_ATHLETICS"
    }
  ]
}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "lock.json"), `{"skills:athletics":0}`+"\n")

	proj := testProject(root)
	proj.Config.TopData.ReferenceBuilder = ""

	if _, err := BuildNative(proj, nil); err != nil {
		t.Fatalf("BuildNative failed: %v", err)
	}
	indexRaw, err := os.ReadFile(filepath.Join(root, ".cache", "wiki", "page-index.json"))
	if err != nil {
		t.Fatalf("read page index: %v", err)
	}
	var pageIndex wikiPageIndex
	if err := json.Unmarshal(indexRaw, &pageIndex); err != nil {
		t.Fatalf("parse page index: %v", err)
	}
	paths := map[string]string{}
	for _, page := range pageIndex.Pages {
		paths[page.PageID] = page.PublicPath
	}
	if got, want := paths["meta:wikistatus"], "Wiki/Status/Wiki_Status"; got != want {
		t.Fatalf("expected declared canonical path for status page, got %q want %q", got, want)
	}
	if got := paths["meta:wikistatus:skills:vanilla"]; !strings.HasPrefix(got, "Wiki/Status/") {
		t.Fatalf("expected declared canonical path for status listing, got %q", got)
	}
}

func TestBuildNativeCanOmitAggregateWikiStatusListings(t *testing.T) {
	root := testProjectRoot(t)
	mkdirAll(t, filepath.Join(root, "topdata", "data", "skills"))
	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "base.json"), `{
  "output": "skills.2da",
  "columns": ["Label", "Name", "Description", "HideFromLevelUp", "Untrained", "KeyAbility", "ArmorCheckPenalty", "Constant"],
  "rows": [
    {
      "id": 0,
      "key": "skills:athletics",
      "Label": "Athletics",
      "Name": {"tlk": {"key": "skills:athletics.name", "text": "Athletics"}},
      "Description": {"tlk": {"key": "skills:athletics.description", "text": "Ability: Strength."}},
      "HideFromLevelUp": "0",
      "Untrained": "1",
      "KeyAbility": "STR",
      "ArmorCheckPenalty": "1",
      "Constant": "SKILL_ATHLETICS"
    }
  ]
}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "lock.json"), `{"skills:athletics":0}`+"\n")

	proj := testProject(root)
	proj.Config.TopData.ReferenceBuilder = ""
	proj.Config.TopData.Wiki.StatusListingScope = "namespace"

	if _, err := BuildNative(proj, nil); err != nil {
		t.Fatalf("BuildNative failed: %v", err)
	}
	if _, err := os.Stat(filepath.Join(root, ".cache", "wiki", "pages", "meta", "wikistatus", "skills", "vanilla.html")); err != nil {
		t.Fatalf("expected namespace status listing to be generated: %v", err)
	}
	if _, err := os.Stat(filepath.Join(root, ".cache", "wiki", "pages", "meta", "wikistatus", "vanilla.html")); !os.IsNotExist(err) {
		t.Fatalf("expected aggregate status listing to be omitted, got err=%v", err)
	}
}

func countGeneratedWikiHTMLFiles(t *testing.T, root string) int {
	t.Helper()
	count := 0
	err := filepath.WalkDir(root, func(path string, d os.DirEntry, err error) error {
		if err != nil {
			return err
		}
		if !d.IsDir() && strings.EqualFold(filepath.Ext(path), ".html") {
			count++
		}
		return nil
	})
	if err != nil {
		t.Fatalf("count generated wiki HTML files: %v", err)
	}
	return count
}

func TestDefaultWikiManualSectionsUseSingleUserBottomBlock(t *testing.T) {
	sections := defaultWikiManualSections()
	if len(sections) != 2 {
		t.Fatalf("expected top and bottom manual sections only, got %#v", sections)
	}
	expected := map[string]string{
		"user_top":    "UserTopSection",
		"user_bottom": "UserBottomSection",
	}
	for _, section := range sections {
		alias, ok := expected[section.ID]
		if !ok {
			t.Fatalf("unexpected default manual section %#v", section)
		}
		if section.Alias != alias {
			t.Fatalf("expected alias %q for %q, got %q", alias, section.ID, section.Alias)
		}
	}
}

func TestWikiClassNamePrefersFullNameInsteadOfShortCode(t *testing.T) {
	ctx := &wikiContext{}
	got := ctx.resolveRowName("classes", map[string]any{
		"Name":  map[string]any{"tlk": map[string]any{"key": "classes:wizard.name", "text": "Wizard"}},
		"Short": map[string]any{"tlk": map[string]any{"key": "classes:wizard.short", "text": "Wiz"}},
	})
	if got != "Wizard" {
		t.Fatalf("expected full class name, got %q", got)
	}
}

func TestWikiTemplateRendersFieldsFormattersAndPreservedTopSection(t *testing.T) {
	ctx := &wikiContext{}
	page := wikiTemplatePage{
		PageID:   "classes:acolyte",
		Category: "classes",
		Key:      "classes:acolyte",
		Title:    "Acolyte",
		Status:   wikiStatusNew,
		Row: map[string]any{
			"HitDie":         6,
			"SkillPointBase": 4,
			"Description": map[string]any{"tlk": map[string]any{
				"text": "Acolyte description.",
			}},
		},
		ManualSections: []wikiManualSection{
			{ID: "user_top", Alias: "UserTopSection", InitialHTML: "<p></p>"},
			{ID: "user_bottom", Alias: "UserBottomSection", InitialHTML: "<p></p>"},
		},
	}

	got, err := ctx.renderWikiTemplateString("classes.html", `<h1>{{title}}</h1>
{{UserTopSection}}
<p>Hit Die: {{HitDie}}</p>
<p>Skill Points: {{SkillPointBase}}</p>
{{format:StatusCallout}}
{{format:Description}}
{{UserBottomSection}}`, page)
	if err != nil {
		t.Fatalf("render template: %v", err)
	}

	if !strings.Contains(got, "<h1>Acolyte</h1>\n<!-- sow-topdata-wiki:manual:start id=\"user_top\" -->") {
		t.Fatalf("expected preserved top section directly after title, got:\n%s", got)
	}
	for _, expected := range []string{
		"<p>Hit Die: 6</p>",
		"<p>Skill Points: 4</p>",
		"This is a new class!",
		"<p>Acolyte description.</p>",
		`<!-- sow-topdata-wiki:manual:start id="user_bottom" -->`,
	} {
		if !strings.Contains(got, expected) {
			t.Fatalf("expected %q in rendered template:\n%s", expected, got)
		}
	}
}

func TestWikiTemplateMissingFieldFailsUnlessDefaultProvided(t *testing.T) {
	ctx := &wikiContext{}
	page := wikiTemplatePage{PageID: "classes:acolyte", Category: "classes", Title: "Acolyte", Row: map[string]any{}}

	if _, err := ctx.renderWikiTemplateString("classes.html", `<p>{{HitDie}}</p>`, page); err == nil || !strings.Contains(err.Error(), `missing field "HitDie"`) {
		t.Fatalf("expected missing field error, got %v", err)
	}

	got, err := ctx.renderWikiTemplateString("classes.html", `<p>{{field:HitDie|default=unknown}}</p>`, page)
	if err != nil {
		t.Fatalf("expected defaulted field to render, got %v", err)
	}
	if got != "<p>unknown</p>" {
		t.Fatalf("expected default value, got %q", got)
	}
}

func TestWikiTemplateEachBlockRendersExplicitClassProgressionTable(t *testing.T) {
	ctx := &wikiContext{
		wikiDataProviders: map[string]wikiDataProviderDefinition{
			"ClassProgression": {Source: "class_progression", Levels: "1-2"},
		},
	}
	page := wikiTemplatePage{
		PageID:   "classes:fighter",
		Category: "classes",
		Key:      "classes:fighter",
		Title:    "Fighter",
		Row: map[string]any{
			"HitDie":           "10",
			"AttackBonusTable": "cls_atk_1",
		},
	}

	template := `<table class="wiki-table wiki-class-progression">
  <thead>
    <tr><th>Lvl</th><th>BAB</th><th>HP</th></tr>
  </thead>
  <tbody>
    {{#each ClassProgression}}
    <tr><td>{{Level|ordinal}}</td><td>{{BAB}}</td><td>{{HPMin}}-{{HPMax}}</td></tr>
    {{/each}}
  </tbody>
</table>`

	got, err := ctx.renderWikiTemplateString("classes.html", template, page)
	if err != nil {
		t.Fatalf("render template: %v", err)
	}
	for _, want := range []string{
		`<table class="wiki-table wiki-class-progression">`,
		`<tr><td>1st</td><td>+1</td><td>1-10</td></tr>`,
		`<tr><td>2nd</td><td>+2</td><td>2-20</td></tr>`,
	} {
		if !strings.Contains(got, want) {
			t.Fatalf("expected rendered output to contain %q:\n%s", want, got)
		}
	}
}

func TestWikiTemplateClassProgressionProviderProjectsConfiguredClassFeats(t *testing.T) {
	root := t.TempDir()
	dataPath := filepath.Join(root, "data.yaml")
	writeFile(t, dataPath, `
providers:
  ClassProgression:
    source: class_progression
    levels: 1-4
    class_feats:
      fields:
        GrantedFeats:
          when: "{{GrantedOnLevel > 0 && List == 3}}"
        AvailableFeats:
          when: "{{GrantedOnLevel > 0 && List != 3}}"
`+"\n")
	providers, err := loadWikiDataProviders(dataPath)
	if err != nil {
		t.Fatalf("load data providers: %v", err)
	}
	ctx := testWikiTableContext(t, "")
	ctx.wikiDataPath = dataPath
	ctx.wikiDataProviders = providers
	ctx.featRows["feat:weapon_focus"] = map[string]any{"FEAT": map[string]any{"tlk": map[string]any{"text": "Weapon Focus"}}}
	ctx.classFeatTables["classes/feats:fighter"] = wikiTable{OutputStem: "cls_feat_fight", Rows: []map[string]any{
		{"FeatIndex": map[string]any{"id": "feat:literate"}, "GrantedOnLevel": "1", "List": "3"},
		{"FeatIndex": map[string]any{"id": "feat:weapon_specialization"}, "GrantedOnLevel": "4", "List": "1"},
		{"FeatIndex": map[string]any{"id": "feat:weapon_focus"}, "GrantedOnLevel": "4", "List": "1"},
		{"FeatIndex": map[string]any{"id": "feat:weapon_proficiency_simple"}, "GrantedOnLevel": "1", "List": "3"},
	}}
	page := wikiTemplatePage{
		PageID:   "classes:fighter",
		Category: "classes",
		Key:      "classes:fighter",
		Title:    "Fighter",
		Row: map[string]any{
			"AttackBonusTable": "cls_atk_1",
			"BonusFeatsTable":  map[string]any{"table": "classes/bonusfeats:fighter"},
			"FeatsTable":       map[string]any{"table": "classes/feats:fighter"},
		},
	}

	got, err := ctx.renderWikiTemplateString("classes.html", `{{#each ClassProgression}}
{{Level}}|{{GrantedFeats|join:", "|wiki}}|{{AvailableFeats|join:", "|wiki}}|{{BonusFeat}}
{{/each}}`, page)
	if err != nil {
		t.Fatalf("render template: %v", err)
	}
	for _, expected := range []string{
		`1|[[Feats/Literate|Literate]], [[Feats/Simple_Weapon_Proficiency|Simple Weapon Proficiency]]||1`,
		`4||[[Feats/Weapon_Specialization|Weapon Specialization]], [[Feats/Weapon_Focus|Weapon Focus]]|1`,
	} {
		if !strings.Contains(got, expected) {
			t.Fatalf("expected %q in rendered progression:\n%s", expected, got)
		}
	}
}

func TestWikiTemplateClassProgressionProviderUsesDefaultNWNAttackSequences(t *testing.T) {
	ctx := &wikiContext{
		wikiDataPath: "test-data.yaml",
		wikiDataProviders: map[string]wikiDataProviderDefinition{
			"ClassProgression": {Source: "class_progression", Levels: "1-16"},
		},
	}
	page := wikiTemplatePage{
		PageID:   "classes:fighter",
		Category: "classes",
		Key:      "classes:fighter",
		Title:    "Fighter",
		Row: map[string]any{
			"AttackBonusTable": "cls_atk_1",
		},
	}

	got, err := ctx.renderWikiTemplateString("classes.html", `{{#each ClassProgression}}{{Level}}:{{BABValue}}:{{AttackCount}}:{{AttackSequence}}
{{/each}}`, page)
	if err != nil {
		t.Fatalf("render template: %v", err)
	}
	for _, expected := range []string{
		"1:1:1:+1",
		"6:6:2:+6/+1",
		"11:11:3:+11/+6/+1",
		"16:16:4:+16/+11/+6/+1",
	} {
		if !strings.Contains(got, expected) {
			t.Fatalf("expected %q in rendered progression:\n%s", expected, got)
		}
	}
}

func TestWikiTemplateClassProgressionProviderSupportsFixedAttacksAndOverrides(t *testing.T) {
	root := t.TempDir()
	dataPath := filepath.Join(root, "data.yaml")
	writeFile(t, dataPath, `
providers:
  ClassProgression:
    source: class_progression
    levels: 1-12
    attacks:
      mode: fixed
      attacks: 2
      step: -5
      overrides:
        - classes: ["classes:fighter"]
          levels: 11
          attacks: 3
`+"\n")
	providers, err := loadWikiDataProviders(dataPath)
	if err != nil {
		t.Fatalf("load data providers: %v", err)
	}
	ctx := &wikiContext{
		wikiDataPath:      dataPath,
		wikiDataProviders: providers,
	}
	page := wikiTemplatePage{
		PageID:   "classes:fighter",
		Category: "classes",
		Key:      "classes:fighter",
		Title:    "Fighter",
		Row: map[string]any{
			"AttackBonusTable": "cls_atk_1",
		},
	}

	got, err := ctx.renderWikiTemplateString("classes.html", `{{#each ClassProgression}}{{Level}}:{{AttackCount}}:{{AttackSequence}}
{{/each}}`, page)
	if err != nil {
		t.Fatalf("render template: %v", err)
	}
	for _, expected := range []string{
		"1:2:+1/-4",
		"6:2:+6/+1",
		"11:3:+11/+6/+1",
		"12:2:+12/+7",
	} {
		if !strings.Contains(got, expected) {
			t.Fatalf("expected %q in rendered progression:\n%s", expected, got)
		}
	}
}

func TestWikiTemplateCountHelperSupportsListGrammar(t *testing.T) {
	ctx := &wikiContext{}
	page := wikiTemplatePage{
		PageID:   "classes:test",
		Category: "classes",
		Key:      "classes:test",
		Title:    "Test Class",
		Row: map[string]any{
			"AvailableFeats": []any{"One", "Two"},
		},
	}

	got, err := ctx.renderWikiTemplateString("classes.html", `{{AvailableFeats|join:", "}} {{if(count(AvailableFeats) > 1, "become", "becomes")}} available.`, page)
	if err != nil {
		t.Fatalf("render plural template: %v", err)
	}
	if got != "One, Two become available." {
		t.Fatalf("unexpected plural grammar: %q", got)
	}

	page.Row["AvailableFeats"] = []any{"One"}
	got, err = ctx.renderWikiTemplateString("classes.html", `{{AvailableFeats|join:", "}} {{if(count(AvailableFeats) > 1, "become", "becomes")}} available.`, page)
	if err != nil {
		t.Fatalf("render singular template: %v", err)
	}
	if got != "One becomes available." {
		t.Fatalf("unexpected singular grammar: %q", got)
	}
}

func TestWikiDataProvidersRejectEmptyClassFeatProjectionCondition(t *testing.T) {
	root := t.TempDir()
	dataPath := filepath.Join(root, "data.yaml")
	writeFile(t, dataPath, `
providers:
  ClassProgression:
    source: class_progression
    class_feats:
      fields:
        AvailableFeats:
          when: ""
`+"\n")

	_, err := loadWikiDataProviders(dataPath)
	if err == nil {
		t.Fatal("expected invalid class feat projection condition")
	}
	for _, expected := range []string{"data.yaml", "ClassProgression", "AvailableFeats"} {
		if !strings.Contains(err.Error(), expected) {
			t.Fatalf("expected error to contain %q, got %v", expected, err)
		}
	}
}

func TestWikiDataProvidersRejectInvalidAttackOverrideConfig(t *testing.T) {
	root := t.TempDir()
	dataPath := filepath.Join(root, "data.yaml")
	writeFile(t, dataPath, `
providers:
  ClassProgression:
    source: class_progression
    attacks:
      mode: fixed
      attacks: 2
      overrides:
        - classes: ["classes:fighter"]
          levels: 11
          attacks: 3
          add: 1
`+"\n")

	_, err := loadWikiDataProviders(dataPath)
	if err == nil {
		t.Fatal("expected invalid attack override config")
	}
	for _, expected := range []string{"data.yaml", "ClassProgression", "attacks", "override"} {
		if !strings.Contains(err.Error(), expected) {
			t.Fatalf("expected error to contain %q, got %v", expected, err)
		}
	}
}

func TestWikiDataProvidersRejectInvalidColumnProviderConfig(t *testing.T) {
	root := t.TempDir()
	dataPath := filepath.Join(root, "data.yaml")
	writeFile(t, dataPath, `
providers:
  ClassSkills:
    source: class_skills
  BrokenColumns:
    source: columns
    provider: ClassSkills
    columns: 0
    items_per_column: 2
`+"\n")

	_, err := loadWikiDataProviders(dataPath)
	if err == nil {
		t.Fatal("expected invalid column provider config")
	}
	for _, expected := range []string{"data.yaml", "BrokenColumns", "columns"} {
		if !strings.Contains(err.Error(), expected) {
			t.Fatalf("expected error to contain %q, got %v", expected, err)
		}
	}
}

func TestWikiTemplateEachBlockRendersClassSkillsAsIndividualListItems(t *testing.T) {
	ctx := &wikiContext{
		wikiDataProviders: map[string]wikiDataProviderDefinition{
			"ClassSkills": {Source: "class_skills"},
		},
		classSkillTables: map[string]wikiTable{
			"classes/skills:fighter": {
				Rows: []map[string]any{
					{"SkillIndex": "1", "ClassSkill": "1"},
					{"SkillIndex": "2", "ClassSkill": "1"},
					{"SkillIndex": "3", "ClassSkill": "0"},
				},
			},
		},
		skillIDToKey: map[int]string{
			1: "skills:athletics",
			2: "skills:parry",
			3: "skills:secret",
		},
		skillRows: map[string]map[string]any{
			"skills:athletics": {"Name": "Athletics"},
			"skills:parry":     {"Name": "Parry"},
			"skills:secret":    {"Name": "Secret"},
		},
	}
	page := wikiTemplatePage{
		PageID:   "classes:fighter",
		Category: "classes",
		Key:      "classes:fighter",
		Title:    "Fighter",
		Row: map[string]any{
			"SkillsTable": map[string]any{"table": "classes/skills:fighter"},
		},
	}

	template := `<ul class="wiki-list wiki-class-skills">
{{#each ClassSkills}}
  <li>{{SkillKey|link:SkillName|wiki}}</li>
{{/each}}
</ul>`

	got, err := ctx.renderWikiTemplateString("classes.html", template, page)
	if err != nil {
		t.Fatalf("render template: %v", err)
	}
	for _, want := range []string{
		`<li>[[Skills/Athletics|Athletics]]</li>`,
		`<li>[[Skills/Parry|Parry]]</li>`,
	} {
		if !strings.Contains(got, want) {
			t.Fatalf("expected rendered output to contain %q:\n%s", want, got)
		}
	}
	for _, reject := range []string{"Athletics, ", "Secret"} {
		if strings.Contains(got, reject) {
			t.Fatalf("expected rendered output not to contain %q:\n%s", reject, got)
		}
	}
}

func TestWikiTemplateColumnProviderRendersNestedItemsAndForcedEmptyColumns(t *testing.T) {
	ctx := &wikiContext{
		wikiDataProviders: map[string]wikiDataProviderDefinition{
			"ClassSkills": {
				Source: "class_skills",
			},
			"ClassSkillColumns": {
				Source:         "columns",
				Provider:       "ClassSkills",
				Columns:        3,
				ItemsPerColumn: 2,
				ForceColumns:   true,
			},
		},
		classSkillTables: map[string]wikiTable{
			"classes/skills:fighter": {
				Rows: []map[string]any{
					{"SkillIndex": "1", "ClassSkill": "1"},
					{"SkillIndex": "2", "ClassSkill": "1"},
					{"SkillIndex": "3", "ClassSkill": "1"},
				},
			},
		},
		skillIDToKey: map[int]string{
			1: "skills:athletics",
			2: "skills:parry",
			3: "skills:ride",
		},
		skillRows: map[string]map[string]any{
			"skills:athletics": {"Name": "Athletics"},
			"skills:parry":     {"Name": "Parry"},
			"skills:ride":      {"Name": "Ride"},
		},
	}
	page := wikiTemplatePage{
		PageID:   "classes:fighter",
		Category: "classes",
		Key:      "classes:fighter",
		Title:    "Fighter",
		Row: map[string]any{
			"SkillsTable": map[string]any{"table": "classes/skills:fighter"},
		},
	}

	template := `<div class="wiki-list-columns wiki-list-columns--3">
{{#each ClassSkillColumns}}
  <ul data-index="{{Index}}" data-count="{{Count}}" class="wiki-list wiki-class-skills">
  {{#each Items}}
    <li>{{SkillKey|link:SkillName|wiki}}</li>
  {{/each}}
  </ul>
{{/each}}
</div>`

	got, err := ctx.renderWikiTemplateString("classes.html", template, page)
	if err != nil {
		t.Fatalf("render template: %v", err)
	}
	for _, want := range []string{
		`<ul data-index="1" data-count="2" class="wiki-list wiki-class-skills">`,
		`<li>[[Skills/Athletics|Athletics]]</li>`,
		`<li>[[Skills/Parry|Parry]]</li>`,
		`<ul data-index="2" data-count="1" class="wiki-list wiki-class-skills">`,
		`<li>[[Skills/Ride|Ride]]</li>`,
		`<ul data-index="3" data-count="0" class="wiki-list wiki-class-skills">`,
	} {
		if !strings.Contains(got, want) {
			t.Fatalf("expected rendered output to contain %q:\n%s", want, got)
		}
	}
	if gotCount := strings.Count(got, `<ul data-index=`); gotCount != 3 {
		t.Fatalf("expected exactly 3 forced columns, got %d:\n%s", gotCount, got)
	}
}

func TestWikiTemplateColumnProviderAddsOverflowColumnsBeyondConfiguredCount(t *testing.T) {
	ctx := &wikiContext{
		wikiDataProviders: map[string]wikiDataProviderDefinition{
			"ClassSkills": {
				Source: "class_skills",
			},
			"ClassSkillColumns": {
				Source:         "columns",
				Provider:       "ClassSkills",
				Columns:        2,
				ItemsPerColumn: 2,
			},
		},
		classSkillTables: map[string]wikiTable{
			"classes/skills:fighter": {
				Rows: []map[string]any{
					{"SkillIndex": "1", "ClassSkill": "1"},
					{"SkillIndex": "2", "ClassSkill": "1"},
					{"SkillIndex": "3", "ClassSkill": "1"},
					{"SkillIndex": "4", "ClassSkill": "1"},
					{"SkillIndex": "5", "ClassSkill": "1"},
				},
			},
		},
		skillIDToKey: map[int]string{
			1: "skills:athletics",
			2: "skills:parry",
			3: "skills:ride",
			4: "skills:survival",
			5: "skills:heal",
		},
		skillRows: map[string]map[string]any{
			"skills:athletics": {"Name": "Athletics"},
			"skills:parry":     {"Name": "Parry"},
			"skills:ride":      {"Name": "Ride"},
			"skills:survival":  {"Name": "Survival"},
			"skills:heal":      {"Name": "Heal"},
		},
	}
	page := wikiTemplatePage{
		PageID:   "classes:fighter",
		Category: "classes",
		Key:      "classes:fighter",
		Title:    "Fighter",
		Row: map[string]any{
			"SkillsTable": map[string]any{"table": "classes/skills:fighter"},
		},
	}

	got, err := ctx.renderWikiTemplateString("classes.html", `{{#each ClassSkillColumns}}[{{Index}}:{{Count}}]{{/each}}`, page)
	if err != nil {
		t.Fatalf("render template: %v", err)
	}
	if got != "[1:2][2:2][3:1]" {
		t.Fatalf("expected overflow column after configured columns, got %q", got)
	}
}

func TestWikiTemplateListFilterRendersSliceAsListItems(t *testing.T) {
	ctx := &wikiContext{}
	page := wikiTemplatePage{
		PageID:   "classes:fighter",
		Category: "classes",
		Key:      "classes:fighter",
		Title:    "Fighter",
		Row: map[string]any{
			"GrantedFeats": []string{
				"[[Feats/Literate|Literate]]",
				"[[Feats/Armor_Proficiency_light|Armor Proficiency (light)]]",
			},
		},
	}

	got, err := ctx.renderWikiTemplateString("classes.html", `<td>{{GrantedFeats|list:"wiki-list wiki-inline-list"}}</td>`, page)
	if err != nil {
		t.Fatalf("render template: %v", err)
	}
	for _, want := range []string{
		`<td><ul class="wiki-list wiki-inline-list">`,
		`<li>[[Feats/Literate|Literate]]</li>`,
		`<li>[[Feats/Armor_Proficiency_light|Armor Proficiency (light)]]</li>`,
	} {
		if !strings.Contains(got, want) {
			t.Fatalf("expected rendered output to contain %q:\n%s", want, got)
		}
	}
	if strings.Contains(got, "Literate]], [[") {
		t.Fatalf("expected list filter not to render comma-separated links:\n%s", got)
	}
}

func TestWikiTemplateCanRenderRacialFactsAndFeatListInHTML(t *testing.T) {
	ctx := &wikiContext{
		wikiDataProviders: map[string]wikiDataProviderDefinition{
			"RaceFeats": {Source: "race_feats"},
		},
		classIDToKey: map[int]string{7: "classes:paladin"},
		featIDToKey: map[int]string{
			10: "feat:darkvision",
			11: "feat:daylight:aasimar",
		},
		classRows: map[string]map[string]any{
			"classes:paladin": {"Name": "Paladin"},
		},
		featRows: map[string]map[string]any{
			"feat:darkvision":       {"FEAT": "Darkvision"},
			"feat:daylight:aasimar": {"FEAT": "Daylight (aasimar)"},
		},
		visibleWikiKeys: map[string]bool{
			"classes:paladin":       true,
			"feat:darkvision":       true,
			"feat:daylight:aasimar": true,
		},
	}
	page := wikiTemplatePage{
		PageID:   "racialtypes:aasimar",
		Category: "racialtypes",
		Key:      "racialtypes:aasimar",
		Title:    "Aasimar",
		Row: map[string]any{
			"WISAdjust":  "2",
			"CHAAdjust":  "2",
			"Favored":    "7",
			"FeatsTable": []any{"10", "11"},
		},
	}

	template := `<table class="wiki-facts">
  <tbody>
    <tr><th scope="row">Ability Adjustments</th><td>{{ability_adjustments()}}</td></tr>
    {{#if present(Favored)}}
    <tr><th scope="row">Favored Class</th><td>{{Favored|ref:"classes"|wiki}}</td></tr>
    {{/if}}
  </tbody>
</table>
<ul class="wiki-race-feats">
{{#each RaceFeats}}
  <li>{{FeatKey|link:FeatName|wiki}}</li>
{{/each}}
</ul>`

	got, err := ctx.renderWikiTemplateString("racialtypes.html", template, page)
	if err != nil {
		t.Fatalf("render template: %v", err)
	}
	for _, want := range []string{
		`<th scope="row">Ability Adjustments</th><td>+2 Wisdom, +2 Charisma</td>`,
		`<th scope="row">Favored Class</th><td>[[Classes/Paladin|Paladin]]</td>`,
		`<li>[[Feats/Darkvision|Darkvision]]</li>`,
		`<li>[[Feats/Daylight_aasimar|Daylight (aasimar)]]</li>`,
	} {
		if !strings.Contains(got, want) {
			t.Fatalf("expected rendered output to contain %q:\n%s", want, got)
		}
	}
}

func TestWikiTemplateDescriptionFiltersExtractParagraphsAndSections(t *testing.T) {
	ctx := &wikiContext{}
	page := wikiTemplatePage{
		PageID:   "feat:test",
		Category: "feat",
		Key:      "feat:test",
		Title:    "Test Feat",
		Row: map[string]any{
			"DESCRIPTION": map[string]any{"tlk": map[string]any{"text": strings.Join([]string{
				"Type of Feat: General",
				"",
				"Prerequisite: Dexterity 13+",
				"",
				"Specifics: You gain a +2 dodge bonus.",
				"The bonus applies only while unarmored.",
				"",
				"Use: Automatic.",
			}, "\n")}},
		},
	}

	tests := []struct {
		name     string
		template string
		want     string
		reject   string
	}{
		{
			name:     "first paragraph",
			template: `<div>{{DESCRIPTION|text|paragraph:first}}</div>`,
			want:     `<div>Type of Feat: General</div>`,
			reject:   `Prerequisite`,
		},
		{
			name:     "specifics after marker as html",
			template: `<section>{{DESCRIPTION|text|after:"Specifics:"|before:"Use:"|trim|html}}</section>`,
			want:     `<section><p>You gain a +2 dodge bonus.<br>The bonus applies only while unarmored.</p></section>`,
			reject:   `Use: Automatic`,
		},
		{
			name:     "first and last paragraphs",
			template: `<div>{{DESCRIPTION|text|paragraphs:"first,last"|html}}</div>`,
			want:     `<div><p>Type of Feat: General</p><p>Use: Automatic.</p></div>`,
			reject:   `Specifics`,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := ctx.renderWikiTemplateString("feat.html", tt.template, page)
			if err != nil {
				t.Fatalf("render template: %v", err)
			}
			if !strings.Contains(got, tt.want) {
				t.Fatalf("expected output to contain %q:\n%s", tt.want, got)
			}
			if tt.reject != "" && strings.Contains(got, tt.reject) {
				t.Fatalf("expected output not to contain %q:\n%s", tt.reject, got)
			}
		})
	}
}

func TestWikiTemplateRendersConfiguredClassProgressionTable(t *testing.T) {
	ctx := testWikiTableContext(t, `
tables:
  ClassProgression:
    source: class_progression
    class: "wiki-table wiki-class-progression"
    rows:
      levels: 1-4
      when: "{{Level >= 1 && Level <= 4}}"
    columns:
      - key: level
        label: Lvl
        value: "{{ordinal(Level)}}"
      - key: bab
        label: BAB
        value: "{{BAB}}"
      - key: saves
        label: Saves
        children:
          - key: fort
            label: Fort
            value: "{{FortSave}}"
          - key: reflex
            label: Ref
            value: "{{RefSave}}"
          - key: will
            label: Will
            value: "{{WillSave}}"
      - key: feats
        label: Feats
        value: "{{join(GrantedFeats, \", \")}}"
        empty: ""
        allow_wiki_markup: true
      - key: hp_range
        label: HP range
        value: "{{range(HPMin, HPMax)}}"
      - key: notes
        label: Notes
        value: "{{if(Level == 4 && BonusFeat != \"0\", link(\"feat:weapon_specialization\", \"Weapon Specialization\") + \" first available.\", Notes)}}"
        empty: ""
        allow_wiki_markup: true
`)
	page := wikiTemplatePage{
		PageID:   "classes:fighter",
		Category: "classes",
		Key:      "classes:fighter",
		Title:    "Fighter",
		Row: map[string]any{
			"AttackBonusTable": "cls_atk_1",
			"BonusFeatsTable":  map[string]any{"table": "classes/bonusfeats:fighter"},
			"FeatsTable":       map[string]any{"table": "classes/feats:fighter"},
			"HitDie":           10,
			"SavingThrowTable": map[string]any{"table": "classes/saves:fortitude"},
		},
	}

	got, err := ctx.renderWikiTemplateString("classes.html", `<h1>{{title}}</h1>
{{table:ClassProgression}}`, page)
	if err != nil {
		t.Fatalf("render table template: %v", err)
	}
	for _, expected := range []string{
		`<table class="wiki-table wiki-class-progression">`,
		`<th scope="col" rowspan="2">Lvl</th>`,
		`<th scope="colgroup" colspan="3">Saves</th>`,
		`<td>1st</td>`,
		`<td>+1</td>`,
		`<td>2</td>`,
		`<td>[[Feats/Literate|Literate]], [[Feats/Simple_Weapon_Proficiency|Simple Weapon Proficiency]]</td>`,
		`<td>1-10</td>`,
		`<td>[[Feats/Weapon_Specialization|Weapon Specialization]] first available.</td>`,
	} {
		if !strings.Contains(got, expected) {
			t.Fatalf("expected %q in rendered table:\n%s", expected, got)
		}
	}
}

func TestWikiTableMissingFieldReportsTableAndColumn(t *testing.T) {
	ctx := testWikiTableContext(t, `
tables:
  Broken:
    source: class_progression
    rows:
      levels: 1
    columns:
      - key: missing
        label: Missing
        value: "{{NoSuchField}}"
`)
	page := wikiTemplatePage{
		PageID:   "classes:fighter",
		Category: "classes",
		Key:      "classes:fighter",
		Row: map[string]any{
			"AttackBonusTable": "cls_atk_1",
			"HitDie":           10,
			"SavingThrowTable": map[string]any{"table": "classes/saves:fortitude"},
		},
	}

	_, err := ctx.renderWikiTemplateString("classes.html", `{{table:Broken}}`, page)
	if err == nil {
		t.Fatal("expected missing field error")
	}
	for _, expected := range []string{`classes:fighter`, `table Broken`, `column missing`, `NoSuchField`} {
		if !strings.Contains(err.Error(), expected) {
			t.Fatalf("expected error to contain %q, got %v", expected, err)
		}
	}
}

func TestWikiTableRejectsImpossibleNestedHeader(t *testing.T) {
	_, err := parseWikiTableDefinitions([]byte(`
tables:
  Broken:
    source: class_progression
    rows:
      levels: 1
    columns:
      - key: bad
        label: Bad
        value: "{{Level}}"
        children:
          - key: child
            label: Child
            value: "{{Level}}"
`), "test-tables.yaml")
	if err == nil || !strings.Contains(err.Error(), "cannot have both value and children") {
		t.Fatalf("expected impossible nested header error, got %v", err)
	}
}

func TestWikiVisibilityPolicyRejectsNullLikeFeatsAndHiddenReferences(t *testing.T) {
	root := testProjectRoot(t)
	for _, dir := range []string{
		filepath.Join(root, "topdata", "data", "classes", "core"),
		filepath.Join(root, "topdata", "data", "classes", "feats"),
		filepath.Join(root, "topdata", "data", "classes", "skills"),
		filepath.Join(root, "topdata", "data", "feat"),
		filepath.Join(root, "topdata", "data", "skills"),
		filepath.Join(root, "topdata", "wiki"),
		filepath.Join(root, "topdata", "wiki", "templates", "pages"),
	} {
		mkdirAll(t, dir)
	}
	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
	writeFile(t, filepath.Join(root, "topdata", "wiki", "templates", "pages", "classes.html"), `<h1>{{title}}</h1>
{{format:SkillList}}
{{table:FeatProgression}}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "wiki", "tables.yaml"), `
tables:
  FeatProgression:
    source: class_feats
    columns:
      - key: feat
        label: Feat
        value: "{{link(FeatKey, FeatName)}}"
        allow_wiki_markup: true
`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "wiki", "visibility.yaml"), `
reference_sets:
  class_feats:
    target_dataset: feat
    sources:
      - dataset: classes
        table_field: FeatsTable
        table_kind: class_feats
        row_ref_field: FeatIndex
datasets:
  classes:
    eligibility:
      when: "{{all_present(Name, Description)}}"
    include:
      - when: "{{PlayerClass == 1}}"
  feat:
    eligibility:
      when: "{{all_present(FEAT, DESCRIPTION)}}"
    include:
      - when: "{{ALLCLASSESCANUSE == 1}}"
      - reference_set: class_feats
    exclude:
      - when: "{{PreReqEpic == 1}}"
  skills:
    eligibility:
      when: "{{all_present(Name, Description)}}"
    include:
      - when: "{{true}}"
    exclude:
      - when: "{{HideFromLevelUp == 1}}"
`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "base.json"), `{
  "output": "skills.2da",
  "columns": ["Label", "Name", "Description", "HideFromLevelUp"],
  "rows": [
    {"id": 0, "key": "skills:athletics", "Label": "Athletics", "Name": {"tlk": {"text": "Athletics"}}, "Description": {"tlk": {"text": "Visible skill."}}, "HideFromLevelUp": "0"},
    {"id": 1, "key": "skills:secret", "Label": "Secret", "Name": {"tlk": {"text": "Secret"}}, "Description": {"tlk": {"text": "Hidden skill."}}, "HideFromLevelUp": "1"}
  ]
}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "lock.json"), `{"skills:athletics":0,"skills:secret":1}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "feat", "base.json"), `{
  "output": "feat.2da",
  "columns": ["LABEL", "FEAT", "DESCRIPTION", "ALLCLASSESCANUSE", "PreReqEpic"],
  "rows": [
    {"id": 0, "key": "feat:visible", "LABEL": "Visible", "FEAT": {"tlk": {"text": "Visible Feat"}}, "DESCRIPTION": {"tlk": {"text": "Visible feat description."}}, "ALLCLASSESCANUSE": "1", "PreReqEpic": "0"},
    {"id": 1, "key": "feat:epic", "LABEL": "Epic", "FEAT": {"tlk": {"text": "Epic Feat"}}, "DESCRIPTION": {"tlk": {"text": "Epic feat description."}}, "ALLCLASSESCANUSE": "1", "PreReqEpic": "1"},
    {"id": 2, "key": "feat:nullfeat", "LABEL": "Null", "FEAT": "****", "DESCRIPTION": {"tlk": {"text": "Null feat description."}}, "ALLCLASSESCANUSE": "1", "PreReqEpic": "0"},
    {"id": 3, "key": "feat:class_only", "LABEL": "ClassOnly", "FEAT": {"tlk": {"text": "Class Feat"}}, "DESCRIPTION": {"tlk": {"text": "Class feat description."}}, "ALLCLASSESCANUSE": "0", "PreReqEpic": "0"}
  ]
}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "feat", "lock.json"), `{"feat:visible":0,"feat:epic":1,"feat:nullfeat":2,"feat:class_only":3}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "classes", "core", "base.json"), `{
  "output": "classes.2da",
  "columns": ["Label", "Name", "Description", "PlayerClass", "SkillsTable", "FeatsTable"],
  "rows": [
    {"id": 0, "key": "classes:fighter", "Label": "Fighter", "Name": {"tlk": {"text": "Fighter"}}, "Description": {"tlk": {"text": "Fighter text."}}, "PlayerClass": "1", "SkillsTable": {"table": "classes/skills:fighter"}, "FeatsTable": {"table": "classes/feats:fighter"}}
  ]
}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "classes", "core", "lock.json"), `{"classes:fighter":0}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "classes", "skills", "fighter.json"), `{
  "key": "classes/skills:fighter",
  "output": "cls_skill_fight.2da",
  "columns": ["SkillIndex", "ClassSkill"],
  "rows": [
    {"SkillIndex": {"id": "skills:athletics"}, "ClassSkill": "1"},
    {"SkillIndex": {"id": "skills:secret"}, "ClassSkill": "1"}
  ]
}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "classes", "feats", "fighter.json"), `{
  "key": "classes/feats:fighter",
  "output": "cls_feat_fight.2da",
  "columns": ["FeatIndex", "GrantedOnLevel", "List"],
  "rows": [
    {"FeatIndex": {"id": "feat:class_only"}, "GrantedOnLevel": "1", "List": "3"},
    {"FeatIndex": {"id": "feat:epic"}, "GrantedOnLevel": "1", "List": "3"},
    {"FeatIndex": {"id": "feat:nullfeat"}, "GrantedOnLevel": "1", "List": "3"}
  ]
}`+"\n")

	proj := testProject(root)
	proj.Config.TopData.ReferenceBuilder = ""
	proj.Config.TopData.Wiki.VisibilityFile = "visibility.yaml"

	if _, err := buildWiki(proj, BuildResult{}, true, nil); err != nil {
		t.Fatalf("buildWiki failed: %v", err)
	}
	for _, path := range []string{
		filepath.Join(root, ".cache", "wiki", "pages", "skills", "secret.html"),
		filepath.Join(root, ".cache", "wiki", "pages", "feat", "epic.html"),
		filepath.Join(root, ".cache", "wiki", "pages", "feat", "nullfeat.html"),
	} {
		if _, err := os.Stat(path); !os.IsNotExist(err) {
			t.Fatalf("expected hidden or ineligible wiki page %s to be omitted, got %v", path, err)
		}
	}
	for _, path := range []string{
		filepath.Join(root, ".cache", "wiki", "pages", "feat", "Visible_Feat.html"),
		filepath.Join(root, ".cache", "wiki", "pages", "feat", "Class_Feat.html"),
	} {
		if _, err := os.Stat(path); err != nil {
			t.Fatalf("expected visible wiki page %s: %v", path, err)
		}
	}
	classPage, err := os.ReadFile(filepath.Join(root, ".cache", "wiki", "pages", "classes", "Fighter.html"))
	if err != nil {
		t.Fatalf("read class page: %v", err)
	}
	classText := string(classPage)
	for _, hidden := range []string{"Secret", "Epic Feat", "Null"} {
		if strings.Contains(classText, hidden) {
			t.Fatalf("expected hidden %q reference to be omitted from class page:\n%s", hidden, classText)
		}
	}
	for _, visible := range []string{"[[Skills/Athletics|Athletics]]", "[[Feats/Class_Feat|Class Feat]]"} {
		if !strings.Contains(classText, visible) {
			t.Fatalf("expected visible %q reference in class page:\n%s", visible, classText)
		}
	}
	indexRaw, err := os.ReadFile(filepath.Join(root, ".cache", "wiki", "page-index.json"))
	if err != nil {
		t.Fatalf("read page index: %v", err)
	}
	if strings.Contains(string(indexRaw), `"page_id": "skills:secret"`) ||
		strings.Contains(string(indexRaw), `"page_id": "feat:epic"`) ||
		strings.Contains(string(indexRaw), `"page_id": "feat:nullfeat"`) {
		t.Fatalf("expected hidden and ineligible pages out of page index:\n%s", string(indexRaw))
	}
}

func TestWikiVisibilityPredicatesTreatNullLikeFieldsAsAbsent(t *testing.T) {
	policy, err := parseWikiVisibilityDefinitions([]byte(`
datasets:
  feat:
    eligibility:
      when: "{{all_present(FEAT, DESCRIPTION)}}"
    include:
      - when: "{{true}}"
`), "visibility.yaml")
	if err != nil {
		t.Fatalf("parse visibility policy: %v", err)
	}
	ctx := &wikiContext{}
	for name, row := range map[string]map[string]any{
		"missing":      {"DESCRIPTION": "Description"},
		"null":         {"FEAT": nil, "DESCRIPTION": "Description"},
		"nwn-null":     {"FEAT": "****", "DESCRIPTION": "Description"},
		"empty":        {"FEAT": "", "DESCRIPTION": "Description"},
		"present":      {"FEAT": "Feat", "DESCRIPTION": "Description"},
		"missing-desc": {"FEAT": "Feat"},
	} {
		got, err := ctx.evalWikiVisibilityPredicate(policy.Datasets["feat"].Eligibility.When, row)
		if err != nil {
			t.Fatalf("%s predicate failed: %v", name, err)
		}
		if want := name == "present"; got != want {
			t.Fatalf("%s expected eligibility %v, got %v", name, want, got)
		}
	}
}

func TestWikiVisibilityPolicyRejectsInvalidDatasetAndReferenceSet(t *testing.T) {
	tests := []struct {
		name string
		yaml string
		want string
	}{
		{
			name: "unknown dataset",
			yaml: `
datasets:
  traps:
    include:
      - when: "{{true}}"
`,
			want: `unknown dataset "traps"`,
		},
		{
			name: "unknown reference set",
			yaml: `
datasets:
  feat:
    include:
      - reference_set: missing
`,
			want: `unknown reference_set "missing"`,
		},
		{
			name: "bad table kind",
			yaml: `
reference_sets:
  feats:
    target_dataset: feat
    sources:
      - dataset: classes
        table_field: FeatsTable
        table_kind: unsupported
        row_ref_field: FeatIndex
datasets:
  feat:
    include:
      - reference_set: feats
`,
			want: `unsupported table_kind`,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			_, err := parseWikiVisibilityDefinitions([]byte(tt.yaml), "visibility.yaml")
			if err == nil || !strings.Contains(err.Error(), tt.want) {
				t.Fatalf("expected %q error, got %v", tt.want, err)
			}
		})
	}
}

func TestWikiVisibilityCanExcludeUnreachableFeatPrerequisites(t *testing.T) {
	policy, err := parseWikiVisibilityDefinitions([]byte(`
datasets:
  feat:
    include:
      - when: "{{true}}"
    exclude:
      - when: "{{hidden_ref(PREREQFEAT1, \"feat\")}}"
      - when: "{{hidden_ref(REQSKILL, \"skills\")}}"
      - when: "{{all_hidden_refs(OrReqFeat0, OrReqFeat1, OrReqFeat2, OrReqFeat3, OrReqFeat4, \"feat\")}}"
`), "visibility.yaml")
	if err != nil {
		t.Fatalf("parse visibility policy: %v", err)
	}
	ctx := &wikiContext{
		visibilityPolicy: &policy,
		visibleWikiKeys: map[string]bool{
			"feat:visible":   true,
			"feat:hidden":    false,
			"skills:visible": true,
			"skills:hidden":  false,
		},
		featIDToKey:  map[int]string{1: "feat:visible", 2: "feat:hidden"},
		skillIDToKey: map[int]string{1: "skills:visible", 2: "skills:hidden"},
	}
	definition := policy.Datasets["feat"]
	featRow := func(values map[string]any) map[string]any {
		row := map[string]any{"FEAT": "Test Feat", "DESCRIPTION": "Description"}
		for key, value := range values {
			row[key] = value
		}
		return row
	}
	for name, tt := range map[string]struct {
		row  map[string]any
		want bool
	}{
		"visible required feat": {
			row:  featRow(map[string]any{"PREREQFEAT1": 1}),
			want: true,
		},
		"hidden required feat": {
			row:  featRow(map[string]any{"PREREQFEAT1": 2}),
			want: false,
		},
		"missing required feat is unreachable": {
			row:  featRow(map[string]any{"PREREQFEAT1": 999}),
			want: false,
		},
		"visible required skill": {
			row:  featRow(map[string]any{"REQSKILL": "skills:visible"}),
			want: true,
		},
		"hidden required skill": {
			row:  featRow(map[string]any{"REQSKILL": "skills:hidden"}),
			want: false,
		},
		"null prerequisite fields are ignored": {
			row:  featRow(map[string]any{"PREREQFEAT1": "****", "REQSKILL": "****"}),
			want: true,
		},
		"or group with visible option remains reachable": {
			row:  featRow(map[string]any{"OrReqFeat0": 2, "OrReqFeat1": 1}),
			want: true,
		},
		"or group with only hidden options is unreachable": {
			row:  featRow(map[string]any{"OrReqFeat0": 2, "OrReqFeat1": "feat:missing"}),
			want: false,
		},
		"empty or group is ignored": {
			row:  featRow(map[string]any{"OrReqFeat0": "****", "OrReqFeat1": "****"}),
			want: true,
		},
	} {
		got, err := ctx.evaluateWikiVisibility("feat", "feat:"+name, tt.row, definition, nil)
		if err != nil {
			t.Fatalf("%s visibility evaluation failed: %v", name, err)
		}
		if got != tt.want {
			t.Fatalf("%s expected visibility %v, got %v", name, tt.want, got)
		}
	}
}

func TestWikiVisibilityIndexUsesBuiltVisibilityForReferenceHelpers(t *testing.T) {
	policy, err := parseWikiVisibilityDefinitions([]byte(`
datasets:
  feat:
    include:
      - when: "{{true}}"
    exclude:
      - when: "{{hidden_ref(PREREQFEAT1, \"feat\")}}"
`), "visibility.yaml")
	if err != nil {
		t.Fatalf("parse visibility policy: %v", err)
	}
	ctx := &wikiContext{
		visibilityPolicy: &policy,
		featRows: map[string]map[string]any{
			"feat:zbase": {
				"FEAT":        "Base Feat",
				"DESCRIPTION": "Description",
			},
			"feat:dependent": {
				"FEAT":        "Dependent Feat",
				"DESCRIPTION": "Description",
				"PREREQFEAT1": 1,
			},
			"feat:chain_dependent": {
				"FEAT":        "Chain Dependent Feat",
				"DESCRIPTION": "Description",
				"PREREQFEAT1": 2,
			},
			"feat:missing_prereq": {
				"FEAT":        "Missing Prereq Feat",
				"DESCRIPTION": "Description",
				"PREREQFEAT1": 999,
			},
		},
		featIDToKey: map[int]string{1: "feat:zbase", 2: "feat:dependent"},
	}
	visible, err := ctx.buildWikiVisibilityIndex(&policy)
	if err != nil {
		t.Fatalf("build visibility index: %v", err)
	}
	if !visible["feat:zbase"] {
		t.Fatalf("expected base feat to be visible")
	}
	if !visible["feat:dependent"] {
		t.Fatalf("expected feat with visible prerequisite to remain visible")
	}
	if !visible["feat:chain_dependent"] {
		t.Fatalf("expected feat with transitive visible prerequisite to remain visible")
	}
	if visible["feat:missing_prereq"] {
		t.Fatalf("expected feat with missing prerequisite to be hidden")
	}
}

func TestWikiVisibilityMetadataOverrideCannotBypassEligibility(t *testing.T) {
	policy, err := parseWikiVisibilityDefinitions([]byte(`
datasets:
  feat:
    eligibility:
      when: "{{present(FEAT)}}"
    include:
      - when: "{{ALLCLASSESCANUSE == 1}}"
    exclude:
      - when: "{{PreReqEpic == 1}}"
`), "visibility.yaml")
	if err != nil {
		t.Fatalf("parse visibility policy: %v", err)
	}
	ctx := &wikiContext{}
	definition := policy.Datasets["feat"]
	for name, tt := range map[string]struct {
		row  map[string]any
		want bool
	}{
		"exclude overridden": {
			row: map[string]any{
				"FEAT":             "Visible",
				"DESCRIPTION":      "Description",
				"PreReqEpic":       "1",
				"ALLCLASSESCANUSE": "1",
				"meta":             map[string]any{"wiki": map[string]any{"generate": "1"}},
			},
			want: true,
		},
		"eligibility preserved": {
			row: map[string]any{
				"FEAT":             "****",
				"DESCRIPTION":      "Description",
				"ALLCLASSESCANUSE": "1",
				"meta":             map[string]any{"wiki": map[string]any{"generate": "1"}},
			},
			want: false,
		},
	} {
		got, err := ctx.evaluateWikiVisibility("feat", "feat:"+name, tt.row, definition, nil)
		if err != nil {
			t.Fatalf("%s visibility evaluation failed: %v", name, err)
		}
		if got != tt.want {
			t.Fatalf("%s expected visibility %v, got %v", name, tt.want, got)
		}
	}
}

func testWikiTableContext(t *testing.T, yamlSource string) *wikiContext {
	t.Helper()
	ctx := &wikiContext{
		featRows:         map[string]map[string]any{},
		featIDToKey:      map[int]string{},
		classFeatTables:  map[string]wikiTable{},
		classBonusTables: map[string]wikiTable{},
		classSaveTables:  map[string]wikiTable{},
		wikiTablesPath:   "test-tables.yaml",
	}
	ctx.featRows["feat:literate"] = map[string]any{"FEAT": map[string]any{"tlk": map[string]any{"text": "Literate"}}}
	ctx.featRows["feat:weapon_proficiency_simple"] = map[string]any{"FEAT": map[string]any{"tlk": map[string]any{"text": "Simple Weapon Proficiency"}}}
	ctx.featRows["feat:weapon_specialization"] = map[string]any{"FEAT": map[string]any{"tlk": map[string]any{"text": "Weapon Specialization"}}}
	ctx.classFeatTables["cls_feat_fight"] = wikiTable{OutputStem: "cls_feat_fight", Rows: []map[string]any{
		{"FeatIndex": map[string]any{"id": "feat:literate"}, "GrantedOnLevel": "1", "List": "3"},
		{"FeatIndex": map[string]any{"id": "feat:weapon_proficiency_simple"}, "GrantedOnLevel": "1", "List": "3"},
	}}
	ctx.classFeatTables["classes/feats:fighter"] = ctx.classFeatTables["cls_feat_fight"]
	ctx.classBonusTables["cls_bfeat_fight"] = wikiTable{OutputStem: "cls_bfeat_fight", Rows: []map[string]any{
		{"id": 1, "Bonus": "1"}, {"id": 2, "Bonus": "1"}, {"id": 3, "Bonus": "0"}, {"id": 4, "Bonus": "1"},
	}}
	ctx.classBonusTables["classes/bonusfeats:fighter"] = ctx.classBonusTables["cls_bfeat_fight"]
	ctx.classSaveTables["cls_savthr_fort"] = wikiTable{OutputStem: "cls_savthr_fort", Rows: []map[string]any{
		{"Level": "1", "FortSave": "2", "RefSave": "0", "WillSave": "0"},
		{"Level": "2", "FortSave": "3", "RefSave": "0", "WillSave": "0"},
		{"Level": "3", "FortSave": "3", "RefSave": "1", "WillSave": "1"},
		{"Level": "4", "FortSave": "4", "RefSave": "1", "WillSave": "1"},
	}}
	ctx.classSaveTables["classes/saves:fortitude"] = ctx.classSaveTables["cls_savthr_fort"]
	tables, err := parseWikiTableDefinitions([]byte(yamlSource), ctx.wikiTablesPath)
	if err != nil {
		t.Fatalf("parse table definitions: %v", err)
	}
	ctx.wikiTableDefinitions = tables
	return ctx
}

func TestWikiManagedHashIgnoresPreservedSectionBody(t *testing.T) {
	first := strings.Join([]string{
		`<!-- sow-topdata-wiki:page=classes:acolyte -->`,
		`<!-- sow-topdata-wiki:managed:start hash="sha256:first" -->`,
		`<h1>Acolyte</h1>`,
		`<!-- sow-topdata-wiki:manual:start id="user_top" -->`,
		`<p>Original user edit.</p>`,
		`<!-- sow-topdata-wiki:manual:end id="user_top" -->`,
		`<p>Generated.</p>`,
		`<!-- sow-topdata-wiki:managed:end -->`,
	}, "\n")
	second := strings.Replace(first, "<p>Original user edit.</p>", "<p>Changed by a user.</p>", 1)

	if computeManagedHash(first) != computeManagedHash(second) {
		t.Fatalf("expected preserved section body not to affect managed hash")
	}
}

func TestWikiSourceDigestIncludesTemplates(t *testing.T) {
	root := t.TempDir()
	mkdirAll(t, filepath.Join(root, "data", "skills"))
	mkdirAll(t, filepath.Join(root, "wiki", "templates", "pages"))
	writeFile(t, filepath.Join(root, "data", "skills", "base.json"), `{"rows":[]}`+"\n")
	templatePath := filepath.Join(root, "wiki", "templates", "pages", "skills.html")
	writeFile(t, templatePath, `<h1>{{title}}</h1>`+"\n")

	before, err := computeWikiSourceDigest(root)
	if err != nil {
		t.Fatalf("compute initial digest: %v", err)
	}
	writeFile(t, templatePath, `<h1>{{title}}</h1><p>Changed</p>`+"\n")
	after, err := computeWikiSourceDigest(root)
	if err != nil {
		t.Fatalf("compute changed digest: %v", err)
	}
	if before == after {
		t.Fatalf("expected template edit to change wiki source digest")
	}
}

func TestWikiPageIDForKeyNormalizesSlashSeparatorsOnly(t *testing.T) {
	got := wikiPageIDForKey("feat:special/attacks_bull_rush")
	if want := "feat:special_attacks_bull_rush"; got != want {
		t.Fatalf("expected normalized page ID %q, got %q", want, got)
	}
	if got := wikiPageIDForKey("feat:bardic_music_inspire_competence"); got != "feat:bardic_music_inspire_competence" {
		t.Fatalf("expected underscore to remain in page ID leaf, got %q", got)
	}
	if got := wikiPageIDForKey("feat:bardic_music/inspire_competence"); got != "feat:bardic_music_inspire_competence" {
		t.Fatalf("expected slash-authored key to stay in one page ID leaf, got %q", got)
	}
}

func TestWikiPageOutputRelPathUsesCanonicalTitleLeaf(t *testing.T) {
	if got, want := wikiPageOutputRelPath("feat:bardic_music_inspire_competence", "Inspire Competence"), filepath.FromSlash("feat/Inspire_Competence.html"); got != want {
		t.Fatalf("expected underscore page ID to stay in one file leaf, got %q want %q", got, want)
	}
	if got, want := wikiPageOutputRelPath(wikiPageIDForKey("feat:bardic_music/inspire_competence"), "Inspire Competence"), filepath.FromSlash("feat/Inspire_Competence.html"); got != want {
		t.Fatalf("expected slash-authored key to stay in one file leaf, got %q want %q", got, want)
	}
}

func TestSaveWikiPageIndexRejectsDuplicateOutputPaths(t *testing.T) {
	err := saveWikiPageIndex(filepath.Join(t.TempDir(), "page-index.json"), wikiPageIndex{
		Version: wikiGeneratorVersion,
		Pages: []wikiPageIndexEntry{
			{PageID: "feat:special:attacks:bull:rush", OutputPath: "pages/feat/special/attacks/bull/rush.html"},
			{PageID: "feat:special/attacks:bull:rush", OutputPath: "pages/feat/special/attacks/bull/rush.html"},
		},
	})
	if err == nil || !strings.Contains(err.Error(), "duplicate wiki page-index output_path") {
		t.Fatalf("expected duplicate output_path validation error, got %v", err)
	}
}

func TestSaveWikiPageIndexRejectsDuplicatePublicPaths(t *testing.T) {
	err := saveWikiPageIndex(filepath.Join(t.TempDir(), "page-index.json"), wikiPageIndex{
		Version: wikiGeneratorVersion,
		Pages: []wikiPageIndexEntry{
			{PageID: "spells:darkness", PublicPath: "Spells/Darkness", OutputPath: "pages/spells/darkness.html"},
			{PageID: "spells:gwildshape:driderdarkness", PublicPath: "Spells/Darkness", OutputPath: "pages/spells/gwildshape/driderdarkness.html"},
		},
	})
	if err == nil || !strings.Contains(err.Error(), "duplicate wiki page-index public_path") {
		t.Fatalf("expected duplicate public_path validation error, got %v", err)
	}
}

func TestSaveWikiPageIndexRejectsFoldedDuplicatePublicPaths(t *testing.T) {
	err := saveWikiPageIndex(filepath.Join(t.TempDir(), "page-index.json"), wikiPageIndex{
		Version: wikiGeneratorVersion,
		Pages: []wikiPageIndexEntry{
			{PageID: "spells:fear", PublicPath: "Magic/Fear", OutputPath: "pages/spells/fear.html"},
			{PageID: "spells:accented_fear", PublicPath: "magic/fear", OutputPath: "pages/spells/accented_fear.html"},
		},
	})
	if err == nil || !strings.Contains(err.Error(), "duplicate wiki page-index public_path") {
		t.Fatalf("expected folded duplicate public_path validation error, got %v", err)
	}
}

func TestPublicWikiPathSplitsTitlePathWithoutWhitespaceAroundSeparator(t *testing.T) {
	ctx := &wikiContext{namespaceTitles: map[string]string{"spells": "Magic"}}
	if got := ctx.publicWikiPath("spells", "Parent::Child"); got != "Magic/Parent/Child" {
		t.Fatalf("expected NodeBB-style title path split, got %q", got)
	}
	if got := wikiPageOutputRelPath("spells:parent_child", "Parent::Child"); got != filepath.FromSlash("spells/Parent/Child.html") {
		t.Fatalf("expected title-based output path split, got %q", got)
	}
}

func TestParseWikiPagePathDeclarationsRejectsLegacySlugOverrides(t *testing.T) {
	_, err := parseWikiPagePathDeclarations([]byte(`
page_paths:
  slug_overrides:
    - page_id: "spells:pdk:fear"
      slug: "pdk-fear"
`), "wiki.yaml")
	if err == nil || !strings.Contains(err.Error(), `page_paths.slug_overrides is retired`) {
		t.Fatalf("expected retired slug override error, got %v", err)
	}
}

func TestCanonicalWikiSegmentPreservesCaseAndUnderscoreSpaces(t *testing.T) {
	tests := map[string]string{
		`Inspire Competence`:                             "Inspire_Competence",
		`Grandmaster's Battle Momentum`:                  "Grandmasters_Battle_Momentum",
		`Bigby’s Clenched Fist`:                          "Bigbys_Clenched_Fist",
		`"Quoted" ‘Curly’ “Title”`:                       "Quoted_Curly_Title",
		`Hardiness vs. Enchantments`:                     "Hardiness_vs_Enchantments",
		`Clairaudience/Clairvoyance`:                     "Clairaudience_Clairvoyance",
		`Moon-on-a-Stick`:                                "Moon_on_a_Stick",
		`Élite &amp; Noble Houses`:                       "Elite_Noble_Houses",
		`Rock 'n' Roll`:                                  "Rock_n_Roll",
		`Melf&#39;s Acid Arrow`:                          "Melfs_Acid_Arrow",
		`Alpha!@#$%^&*()[]-=_+/?.,<>` + "`" + `~|\Omega`: "Alpha_Omega",
		`Æther Œuvre Øresund Straße Þorn Łódź Đelta`:     "Aether_Oeuvre_Oresund_Strasse_Thorn_Lodz_Delta",
	}
	for input, want := range tests {
		if got := canonicalWikiSegment(input); got != want {
			t.Fatalf("canonicalWikiSegment(%q) = %q, want %q", input, got, want)
		}
	}
}

func TestCanonicalWikiSegmentFoldedKeyMatchesPluginFixture(t *testing.T) {
	tests := []struct {
		source    string
		canonical string
		folded    string
	}{
		{source: "Inspire Competence", canonical: "Inspire_Competence", folded: "inspire competence"},
		{source: "Grandmaster's Battle Momentum", canonical: "Grandmasters_Battle_Momentum", folded: "grandmasters battle momentum"},
		{source: "Æther Œuvre Øresund Straße Þorn Łódź Đelta", canonical: "Aether_Oeuvre_Oresund_Strasse_Thorn_Lodz_Delta", folded: "aether oeuvre oresund strasse thorn lodz delta"},
	}
	for _, tt := range tests {
		if got := canonicalWikiSegment(tt.source); got != tt.canonical {
			t.Fatalf("canonicalWikiSegment(%q) = %q, want %q", tt.source, got, tt.canonical)
		}
		if got := canonicalWikiSegmentFoldedKey(tt.source); got != tt.folded {
			t.Fatalf("canonicalWikiSegmentFoldedKey(%q) = %q, want %q", tt.source, got, tt.folded)
		}
	}
}

func TestWikiStatusPagesEmitCanonicalLinks(t *testing.T) {
	ctx := &wikiContext{}
	report := renderWikiStatusReportPage(map[string]map[string]any{
		"skills": {
			"status":   wikiStatusVanilla,
			"new":      0,
			"modified": 0,
			"vanilla":  1,
			"total":    1,
		},
	}, []string{"skills"}, ctx)
	if !strings.Contains(report, "[[Skills|Skills]]") || strings.Contains(report, "[[skills:index|Skills]]") {
		t.Fatalf("expected status report namespace link to use canonical public path, got:\n%s", report)
	}

	listing := renderWikiStatusListingPage("Skills Vanilla Pages", []string{"skills:inspire_competence", "feat:grandmaster_battle_momentum"}, map[string]string{
		"skills:inspire_competence":        "Inspire Competence",
		"feat:grandmaster_battle_momentum": "Grandmaster's Battle Momentum",
	}, ctx)
	for _, want := range []string{
		"[[Skills/Inspire_Competence|Inspire Competence]]",
		"[[Feats/Grandmasters_Battle_Momentum|Grandmaster's Battle Momentum]]",
	} {
		if !strings.Contains(listing, want) {
			t.Fatalf("expected status listing canonical link %q, got:\n%s", want, listing)
		}
	}
	if strings.Contains(listing, "[[skills:inspire_competence|") || strings.Contains(listing, "[[feat:grandmaster_battle_momentum|") {
		t.Fatalf("expected status listing to omit generated page IDs as public targets, got:\n%s", listing)
	}

	customCtx := &wikiContext{
		namespaceTitles: map[string]string{
			"spells": "Magic",
		},
	}
	customReport := renderWikiStatusReportPage(map[string]map[string]any{
		"spells": {
			"status":   wikiStatusNew,
			"new":      1,
			"modified": 0,
			"vanilla":  0,
			"total":    1,
		},
	}, []string{"spells"}, customCtx)
	if !strings.Contains(customReport, "[[Magic|Magic]]") || strings.Contains(customReport, "[[Spells|Spells]]") {
		t.Fatalf("expected custom namespace status report link to use declared canonical title, got:\n%s", customReport)
	}
	customListing := renderWikiStatusListingPage("Magic New Pages", []string{"spells:fear"}, map[string]string{
		"spells:fear": "Fear",
	}, customCtx)
	if !strings.Contains(customListing, "[[Magic/Fear|Fear]]") || strings.Contains(customListing, "[[Spells/Fear|Fear]]") {
		t.Fatalf("expected custom namespace status listing link to use declared canonical title, got:\n%s", customListing)
	}
}

func TestPublicWikiTargetUsesCanonicalNamespaceAndTitlePath(t *testing.T) {
	ctx := &wikiContext{
		namespaceTitles: map[string]string{
			"feat": "Feats",
		},
		namespacePaths: map[string]string{
			"feat": "Wiki/Feats",
		},
		rowsByKey: map[string]map[string]any{
			"feat:hardiness_versus_enchantments": {"FEAT": map[string]any{"tlk": map[string]any{"text": "Hardiness vs. Enchantments"}}},
		},
	}
	if got, want := ctx.publicWikiTargetForKey("feat:hardiness_versus_enchantments", "Display Alias"), "Wiki/Feats/Hardiness_vs_Enchantments"; got != want {
		t.Fatalf("expected canonical title path %q, got %q", want, got)
	}
}

func TestPublicWikiTargetUsesTargetTitleBeforeDisplayLabel(t *testing.T) {
	ctx := &wikiContext{
		namespaceTitles: map[string]string{
			"feat": "Feats",
		},
		rowsByKey: map[string]map[string]any{
			"feat:hardiness:versus:enchantments": {"FEAT": "Hardiness vs. Enchantments"},
		},
	}
	if got, want := ctx.publicWikiTargetForKey("feat:hardiness:versus:enchantments", "Display Alias"), "Feats/Hardiness_vs_Enchantments"; got != want {
		t.Fatalf("expected target title slug %q, got %q", want, got)
	}
}

func TestBuildAndPackageBuildsWikiOnlyWhenRequested(t *testing.T) {
	root := testProjectRoot(t)
	mkdirAll(t, filepath.Join(root, "topdata", "data", "skills"))
	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "base.json"), `{
  "output": "skills.2da",
  "columns": ["Label", "Name", "Description", "HideFromLevelUp", "Untrained", "KeyAbility", "ArmorCheckPenalty", "Constant"],
  "rows": [
    {
      "id": 0,
      "key": "skills:athletics",
      "Label": "Athletics",
      "Name": {"tlk": {"key": "skills:athletics.name", "text": "Athletics"}},
      "Description": {"tlk": {"key": "skills:athletics.description", "text": "Skill text."}},
      "HideFromLevelUp": "0",
      "Untrained": "1",
      "KeyAbility": "STR",
      "ArmorCheckPenalty": "1",
      "Constant": "SKILL_ATHLETICS"
    }
  ]
}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "lock.json"), `{"skills:athletics":0}`+"\n")

	proj := testProject(root)
	proj.Config.TopData.ReferenceBuilder = ""

	result, err := BuildAndPackageWithOptions(proj, BuildAndPackageOptions{}, nil)
	if err != nil {
		t.Fatalf("BuildAndPackageWithOptions failed: %v", err)
	}
	if result.WikiOutputDir != "" || result.WikiPages != 0 {
		t.Fatalf("expected wiki generation to be skipped by default, got dir=%q pages=%d", result.WikiOutputDir, result.WikiPages)
	}
	if _, err := os.Stat(filepath.Join(root, ".cache", "wiki", "state.json")); !os.IsNotExist(err) {
		t.Fatalf("expected no wiki state without explicit wiki build, got %v", err)
	}

	result, err = BuildAndPackageWithOptions(proj, BuildAndPackageOptions{Force: true, BuildWiki: true}, nil)
	if err != nil {
		t.Fatalf("BuildAndPackageWithOptions with wiki failed: %v", err)
	}
	generatedHTMLCount := countGeneratedWikiHTMLFiles(t, filepath.Join(root, ".cache", "wiki", "pages"))
	if result.WikiPages != generatedHTMLCount {
		t.Fatalf("expected wiki page count to match generated HTML files when requested, got result=%d files=%d", result.WikiPages, generatedHTMLCount)
	}
	if _, err := os.Stat(filepath.Join(root, ".cache", "wiki", "state.json")); err != nil {
		t.Fatalf("expected wiki state after explicit wiki build: %v", err)
	}
}

func TestBuildNativeRegeneratesWikiWhenTLKTextChanges(t *testing.T) {
	root := testProjectRoot(t)
	mkdirAll(t, filepath.Join(root, "topdata", "data", "skills"))
	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
	basePath := filepath.Join(root, "topdata", "data", "skills", "base.json")
	writeFile(t, basePath, `{
  "output": "skills.2da",
  "columns": ["Label", "Name", "Description", "HideFromLevelUp", "Untrained", "KeyAbility", "ArmorCheckPenalty", "Constant"],
  "rows": [
    {
      "id": 0,
      "key": "skills:athletics",
      "Label": "Athletics",
      "Name": {"tlk": {"key": "skills:athletics.name", "text": "Athletics"}},
      "Description": {"tlk": {"key": "skills:athletics.description", "text": "Original text."}},
      "HideFromLevelUp": "0",
      "Untrained": "1",
      "KeyAbility": "STR",
      "ArmorCheckPenalty": "1",
      "Constant": "SKILL_ATHLETICS"
    }
  ]
}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "lock.json"), `{"skills:athletics":0}`+"\n")

	proj := testProject(root)
	proj.Config.TopData.ReferenceBuilder = ""
	proj.Config.Autogen.Consumers = nil

	if _, err := BuildNative(proj, nil); err != nil {
		t.Fatalf("initial BuildNative failed: %v", err)
	}
	writeFile(t, basePath, `{
  "output": "skills.2da",
  "columns": ["Label", "Name", "Description", "HideFromLevelUp", "Untrained", "KeyAbility", "ArmorCheckPenalty", "Constant"],
  "rows": [
    {
      "id": 0,
      "key": "skills:athletics",
      "Label": "Athletics",
      "Name": {"tlk": {"key": "skills:athletics.name", "text": "Athletics"}},
      "Description": {"tlk": {"key": "skills:athletics.description", "text": "Updated text."}},
      "HideFromLevelUp": "0",
      "Untrained": "1",
      "KeyAbility": "STR",
      "ArmorCheckPenalty": "1",
      "Constant": "SKILL_ATHLETICS"
    }
  ]
}`+"\n")

	if _, err := BuildNative(proj, nil); err != nil {
		t.Fatalf("BuildNative after text change failed: %v", err)
	}
	pagePath := filepath.Join(root, ".cache", "wiki", "pages", "skills", "Athletics.html")
	got, err := os.ReadFile(pagePath)
	if err != nil {
		t.Fatalf("read regenerated page: %v", err)
	}
	if !strings.Contains(string(got), "Updated text.") {
		t.Fatalf("expected regenerated page to contain updated description:\n%s", string(got))
	}
}

func TestBuildPackageIgnoresWikiSourcesForFreshness(t *testing.T) {
	root := testProjectRoot(t)
	mkdirAll(t, filepath.Join(root, "topdata", "data", "skills"))
	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "base.json"), `{
  "output": "skills.2da",
  "columns": ["Label", "Name", "Description", "HideFromLevelUp", "Untrained", "KeyAbility", "ArmorCheckPenalty", "Constant"],
  "rows": [
    {
      "id": 0,
      "key": "skills:athletics",
      "Label": "Athletics",
      "Name": {"tlk": {"key": "skills:athletics.name", "text": "Athletics"}},
      "Description": {"tlk": {"key": "skills:athletics.description", "text": "Skill text."}},
      "HideFromLevelUp": "0",
      "Untrained": "1",
      "KeyAbility": "STR",
      "ArmorCheckPenalty": "1",
      "Constant": "SKILL_ATHLETICS"
    }
  ]
}`+"\n")
	writeFile(t, filepath.Join(root, "topdata", "data", "skills", "lock.json"), `{"skills:athletics":0}`+"\n")

	proj := testProject(root)
	proj.Config.TopData.ReferenceBuilder = ""
	proj.Config.Autogen.Consumers = nil

	if _, err := BuildNative(proj, nil); err != nil {
		t.Fatalf("BuildNative failed: %v", err)
	}

	pagePath := filepath.Join(root, ".cache", "wiki", "pages", "skills", "Athletics.html")
	newTime := time.Now().Add(2 * time.Second)
	if err := os.Chtimes(pagePath, newTime, newTime); err != nil {
		t.Fatalf("touch wiki page: %v", err)
	}

	if _, err := BuildPackage(proj, nil); err != nil {
		t.Fatalf("expected wiki output to be ignored for freshness, got %v", err)
	}
}