Improved Logging

internal/validator/validator.go

@@ -27,8 +27,9 @@ type Diagnostic struct {
 }
 
 type Report struct {
-	Diagnostics []Diagnostic
-	SourceCount int
+	Diagnostics      []Diagnostic
+	SourceCount      int
+	DecompiledModels []string
 }
 
 type loadedDocument struct {
@@ -121,6 +122,11 @@ func ValidateProject(p *project.Project) Report {
 		}
 		base := strings.ToLower(strings.TrimSuffix(filepath.Base(rel), filepath.Ext(rel)))
 		extension := strings.TrimPrefix(strings.ToLower(filepath.Ext(rel)), ".")
+		if extension == "mdl" {
+			if isTextMDL(filepath.Join(p.AssetsDir(), filepath.FromSlash(rel))) {
+				report.DecompiledModels = append(report.DecompiledModels, rel)
+			}
+		}
 		key := strings.ToLower(base) + "." + extension
 		if _, exists := assetIndex[key]; !exists {
 			assetIndex[key] = rel
@@ -153,10 +159,22 @@ func ValidateProject(p *project.Project) Report {
 		}
 		return strings.Compare(a.Message, b.Message)
 	})
+	slices.Sort(report.DecompiledModels)
 
 	return report
 }
 
+func (r Report) SummaryLines(maxPaths int) []string {
+	return summarizeDiagnostics(r.Diagnostics, maxPaths)
+}
+
+func (r Report) DecompiledSummaryLine(maxPaths int) string {
+	if len(r.DecompiledModels) == 0 {
+		return ""
+	}
+	return formatSummaryLine("info", "ASCII/decompiled .mdl files detected", r.DecompiledModels, maxPaths)
+}
+
 func (r *Report) add(path, message string, severity Severity) {
 	r.Diagnostics = append(r.Diagnostics, Diagnostic{Path: path, Message: message, Severity: severity})
 }
@@ -185,6 +203,79 @@ func (r Report) WarningCount() int {
 	return count
 }
 
+func summarizeDiagnostics(diagnostics []Diagnostic, maxPaths int) []string {
+	type key struct {
+		severity Severity
+		message  string
+	}
+	groups := map[key][]string{}
+	order := make([]key, 0)
+	for _, diagnostic := range diagnostics {
+		k := key{severity: diagnostic.Severity, message: diagnostic.Message}
+		if _, ok := groups[k]; !ok {
+			order = append(order, k)
+		}
+		groups[k] = append(groups[k], diagnostic.Path)
+	}
+	slices.SortFunc(order, func(a, b key) int {
+		if a.severity != b.severity {
+			if a.severity == SeverityError {
+				return -1
+			}
+			return 1
+		}
+		return strings.Compare(a.message, b.message)
+	})
+	lines := make([]string, 0, len(order))
+	for _, k := range order {
+		paths := append([]string(nil), groups[k]...)
+		slices.Sort(paths)
+		paths = slices.Compact(paths)
+		lines = append(lines, formatSummaryLine(string(k.severity), k.message, paths, maxPaths))
+	}
+	return lines
+}
+
+func formatSummaryLine(prefix, message string, paths []string, maxPaths int) string {
+	if len(paths) == 0 {
+		return fmt.Sprintf("%s: %s", prefix, message)
+	}
+	if maxPaths <= 0 {
+		maxPaths = 3
+	}
+	display := paths
+	if len(display) > maxPaths {
+		display = display[:maxPaths]
+	}
+	location := strings.Join(display, ", ")
+	if len(paths) > len(display) {
+		location += fmt.Sprintf(", and %d more", len(paths)-len(display))
+	}
+	return fmt.Sprintf("%s: %s [%s]", prefix, message, location)
+}
+
+func isTextMDL(path string) bool {
+	data, err := os.ReadFile(path)
+	if err != nil || len(data) == 0 {
+		return false
+	}
+	if len(data) > 4096 {
+		data = data[:4096]
+	}
+	if strings.IndexByte(string(data), 0) >= 0 {
+		return false
+	}
+	printable := 0
+	for _, b := range data {
+		if b == '\n' || b == '\r' || b == '\t' || (b >= 32 && b <= 126) {
+			printable++
+		}
+	}
+	ratio := float64(printable) / float64(len(data))
+	lower := strings.ToLower(string(data))
+	return strings.Contains(lower, "newmodel ") || strings.Contains(lower, "donemodel") || ratio >= 0.9
+}
+
 func loadDocument(path string) (gff.Document, string, string, error) {
 	raw, err := os.ReadFile(path)
 	if err != nil {