package locale

import (
	"embed"
	"encoding/json"
	"fmt"
	"path/filepath"
)

// Embed all locale JSON files inside binary
//go:embed i18n/*.json
var localeFS embed.FS

// Load all languages on startup
func LoadAll() error {
	files, err := localeFS.ReadDir("i18n")
	if err != nil {
		return fmt.Errorf("locale: cannot read embedded FS: %w", err)
	}

	for _, f := range files {
		name := f.Name()
		path := filepath.Join("i18n", name)

		data, err := localeFS.ReadFile(path)
		if err != nil {
			return fmt.Errorf("locale: failed to read %s: %w", name, err)
		}

		var b Bundle
		if err := json.Unmarshal(data, &b); err != nil {
			return fmt.Errorf("locale: failed to parse %s: %w", name, err)
		}

		lang := Lang(b.Locale)

		register(lang, b)
	}

	return nil
}