Changelog Automation

internal/app/app.go

@@ -11,6 +11,7 @@ import (
 	"sync"
 	"time"
 
+	"gitea.westgate.pw/ShadowsOverWestgate/sow-tools/internal/changelog"
 	"gitea.westgate.pw/ShadowsOverWestgate/sow-tools/internal/pipeline"
 	"gitea.westgate.pw/ShadowsOverWestgate/sow-tools/internal/project"
 	"gitea.westgate.pw/ShadowsOverWestgate/sow-tools/internal/topdata"
@@ -158,6 +159,11 @@ var commands = []command{
 		description: "Deploy generated wiki pages to NodeBB.",
 		run:         runDeployWiki,
 	},
+	{
+		name:        "build-changelog",
+		description: "Build a release changelog from tagged pull requests and write it to stdout or a file.",
+		run:         runBuildChangelog,
+	},
 }
 
 func Run(args []string) (int, error) {
@@ -830,6 +836,86 @@ func parseDeployWikiArgs(commandName string, args []string) (topdata.DeployWikiO
 	return opts, nil
 }
 
+type buildChangelogOptions struct {
+	configPath  string
+	outputPath  string
+	currentTag  string
+	previousTag string
+	apiBaseURL  string
+	token       string
+}
+
+func runBuildChangelog(ctx context) error {
+	opts, err := parseBuildChangelogArgs("build-changelog", ctx.args[1:])
+	if err != nil {
+		return err
+	}
+
+	return changelog.Generate(changelog.Options{
+		RepoRoot:    ctx.cwd,
+		ConfigPath:  opts.configPath,
+		OutputPath:  opts.outputPath,
+		CurrentTag:  opts.currentTag,
+		PreviousTag: opts.previousTag,
+		APIBaseURL:  opts.apiBaseURL,
+		Token:       opts.token,
+		Stdout:      ctx.stdout,
+	})
+}
+
+func parseBuildChangelogArgs(commandName string, args []string) (buildChangelogOptions, error) {
+	opts := buildChangelogOptions{}
+	usage := fmt.Errorf("usage: %s [--config <path>] [--output <path>] [--current-tag <tag>] [--previous-tag <tag>] [--api-base-url <url>] [--token <token>]", commandName)
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch arg {
+		case "--config":
+			i++
+			if i >= len(args) || strings.TrimSpace(args[i]) == "" {
+				return opts, usage
+			}
+			opts.configPath = args[i]
+		case "--output":
+			i++
+			if i >= len(args) || strings.TrimSpace(args[i]) == "" {
+				return opts, usage
+			}
+			opts.outputPath = args[i]
+		case "--current-tag":
+			i++
+			if i >= len(args) || strings.TrimSpace(args[i]) == "" {
+				return opts, usage
+			}
+			opts.currentTag = args[i]
+		case "--previous-tag":
+			i++
+			if i >= len(args) || strings.TrimSpace(args[i]) == "" {
+				return opts, usage
+			}
+			opts.previousTag = args[i]
+		case "--api-base-url":
+			i++
+			if i >= len(args) || strings.TrimSpace(args[i]) == "" {
+				return opts, usage
+			}
+			opts.apiBaseURL = args[i]
+		case "--token":
+			i++
+			if i >= len(args) || strings.TrimSpace(args[i]) == "" {
+				return opts, usage
+			}
+			opts.token = args[i]
+		case "-h", "--help":
+			return opts, usage
+		default:
+			return opts, fmt.Errorf("unknown %s argument %q", commandName, arg)
+		}
+	}
+
+	return opts, nil
+}
+
 func parseWikiCategoryList(raw string, target map[string]int) error {
 	for _, part := range strings.Split(raw, ",") {
 		part = strings.TrimSpace(part)