Merge pull request #1 from ivarlovlie/claude/static-site-sqlite-setup-mrcAr

1 files changed, 58 insertions, 0 deletions

diff --git a/internal/builder/importmap.go b/internal/builder/importmap.go
new file mode 100644
index 0000000..8445411
--- /dev/null
+++ b/internal/builder/importmap.go
@@ -0,0 +1,58 @@
+package builder
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// ImportMap represents a browser importmap.
+type ImportMap struct {
+	Imports map[string]string `json:"imports"`
+}
+
+// GenerateImportMap scans libDir for .js files and produces an importmap JSON string.
+//
+// Naming rules:
+//   - lib/chart.js          → "chart"
+//   - lib/icons/index.js    → "icons"
+//   - lib/utils/helpers.js  → "utils/helpers"
+func GenerateImportMap(libDir string) (string, error) {
+	imports := make(map[string]string)
+
+	if _, err := os.Stat(libDir); os.IsNotExist(err) {
+		b, _ := json.MarshalIndent(ImportMap{Imports: imports}, "", "  ")
+		return string(b), nil
+	}
+
+	err := filepath.WalkDir(libDir, func(path string, d os.DirEntry, err error) error {
+		if err != nil || d.IsDir() || !strings.HasSuffix(path, ".js") {
+			return err
+		}
+		rel, _ := filepath.Rel(libDir, path)
+		rel = filepath.ToSlash(rel)
+
+		dir := filepath.ToSlash(filepath.Dir(rel))
+		base := strings.TrimSuffix(filepath.Base(rel), ".js")
+
+		var importName string
+		switch {
+		case dir == ".":
+			importName = base
+		case base == "index":
+			importName = dir
+		default:
+			importName = dir + "/" + base
+		}
+
+		imports[importName] = "/lib/" + rel
+		return nil
+	})
+	if err != nil {
+		return "", err
+	}
+
+	b, err := json.MarshalIndent(ImportMap{Imports: imports}, "", "  ")
+	return string(b), err
+}