chore: migrate mail themes to shared framework and locked upstream inputs

tools/cli/list.go

@@ -2,56 +2,24 @@ package cli
 
 import (
 	"fmt"
-	"os"
-	"path/filepath"
-	"sort"
-
+	"gitea-mail-templates/tools/builder"
 	"github.com/urfave/cli/v2"
-
-	"gitea-mail-templates/tools/preview"
+	"path/filepath"
 )
 
-// ListCommand returns the "list" subcommand.
 func ListCommand() *cli.Command {
-	return &cli.Command{
-		Name:      "list",
-		Usage:     "List available theme styles in the target folder",
-		UsageText: "go run . list [--folder <themes-dir>]",
-		Flags: []cli.Flag{
-			&cli.StringFlag{
-				Name:  "folder",
-				Value: "../themes",
-				Usage: "Path to the themes directory",
-			},
-		},
-		Action: runList,
-	}
-}
-
-func runList(c *cli.Context) error {
-	folder := c.String("folder")
-
-	themes, err := preview.DiscoverThemes(folder)
-	if err != nil {
-		return err
-	}
-
-	absDir, _ := filepath.Abs(folder)
-	fmt.Printf("\033[32m[I]\033[0m [Preview] Available styles in '%s' (%d):\n", filepath.Base(absDir), len(themes))
-
-	sort.Strings(themes)
-	for _, t := range themes {
-		count := 0
-		filepath.Walk(filepath.Join(folder, t), func(path string, info os.FileInfo, err error) error {
+	return &cli.Command{Name: "list", Usage: "List available theme manifests", Flags: []cli.Flag{&cli.StringFlag{Name: "folder", Value: "../themes"}}, Action: func(c *cli.Context) error {
+		names, err := builder.Discover(c.String("folder"))
+		if err != nil {
+			return err
+		}
+		for _, name := range names {
+			t, err := builder.LoadTheme(filepath.Join(c.String("folder"), name))
 			if err != nil {
-				return nil
+				return err
 			}
-			if filepath.Ext(path) == ".tmpl" {
-				count++
-			}
-			return nil
-		})
-		fmt.Printf("\033[32m[I]\033[0m [Preview]    %-16s (%d .tmpl files)\n", t, count)
-	}
-	return nil
+			fmt.Printf("%-16s %-8s %s\n", name, t.Mode, t.Description)
+		}
+		return nil
+	}}
 }