func mergeI18nFiles()

in internal/cli/build.go [373:458]
69 lines of code
18 McCabe index (conditional complexity)

func mergeI18nFiles(b *buildingMaterial) (err error) {
	fmt.Printf("try to merge i18n files\n")

	type YamlPluginContent struct {
		Plugin map[string]any `yaml:"plugin"`
	}

	pluginAllTranslations := make(map[string]*YamlPluginContent)
	for _, plugin := range b.plugins {
		i18nDir := filepath.Join(b.tmpDir, fmt.Sprintf("vendor/%s/i18n", plugin.Name))
		fmt.Println("i18n dir: ", i18nDir)
		if !dir.CheckDirExist(i18nDir) {
			continue
		}

		entries, err := os.ReadDir(i18nDir)
		if err != nil {
			return err
		}

		for _, file := range entries {
			// ignore directory
			if file.IsDir() {
				continue
			}
			// ignore non-YAML file
			if filepath.Ext(file.Name()) != ".yaml" {
				continue
			}
			buf, err := os.ReadFile(filepath.Join(i18nDir, file.Name()))
			if err != nil {
				log.Debugf("read translation file failed: %s %s", file.Name(), err)
				continue
			}

			translation := &YamlPluginContent{}
			if err = yaml.Unmarshal(buf, translation); err != nil {
				log.Debugf("unmarshal translation file failed: %s %s", file.Name(), err)
				continue
			}

			if pluginAllTranslations[file.Name()] == nil {
				pluginAllTranslations[file.Name()] = &YamlPluginContent{Plugin: make(map[string]any)}
			}
			for k, v := range translation.Plugin {
				pluginAllTranslations[file.Name()].Plugin[k] = v
			}
		}
	}

	originalI18nDir := filepath.Join(b.tmpDir, "vendor/github.com/apache/answer/i18n")
	entries, err := os.ReadDir(originalI18nDir)
	if err != nil {
		return err
	}

	for _, file := range entries {
		// ignore directory
		if file.IsDir() {
			continue
		}
		// ignore non-YAML file
		filename := file.Name()
		if filepath.Ext(filename) != ".yaml" && filename != "i18n.yaml" {
			continue
		}

		// if plugin don't have this translation file, ignore it
		if pluginAllTranslations[filename] == nil {
			continue
		}

		out, _ := yaml.Marshal(pluginAllTranslations[filename])

		buf, err := os.OpenFile(filepath.Join(originalI18nDir, filename), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
		if err != nil {
			log.Debugf("read translation file failed: %s %s", filename, err)
			continue
		}

		_, _ = buf.WriteString("\n")
		_, _ = buf.Write(out)
		_ = buf.Close()
	}
	return err
}