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# Source code for mindroot.coreplugins.l8n.utils

    # need to import Path
    from pathlib import Path
    from .l8n_constants import *
    import json
    import re
    import logging

    # Set up logging for l8n warnings
    logger = logging.getLogger('l8n')
    logger.setLevel(logging.WARNING)

    # Create console handler with formatting
    if not logger.handlers:
        console_handler = logging.StreamHandler()
        console_handler.setLevel(logging.WARNING)
        formatter = logging.Formatter('\033[91m[L8N WARNING]\033[0m %(message)s')
        console_handler.setFormatter(formatter)
        logger.addHandler(console_handler)

    def extract_plugin_root(absolute_path: str) -> str:
        """
        Extract the plugin root from an absolute path.

        For core plugins: everything after 'coreplugins/'
        For external plugins: everything after 'src/[plugin_name]/'

        Examples:
        - /files/mindroot/src/mindroot/coreplugins/chat/templates/chat.jinja2 -> chat/templates/chat.jinja2
        - /some/path/src/my_plugin/templates/page.jinja2 -> my_plugin/templates/page.jinja2
        """
        path = Path(absolute_path)
        parts = path.parts

        # Find coreplugins in the path
        if 'coreplugins' in parts:
            coreplugins_idx = parts.index('coreplugins')
            if coreplugins_idx + 1 < len(parts):
                return '/'.join(parts[coreplugins_idx + 1:])

        # Find src/[plugin_name] pattern for external plugins
        for i, part in enumerate(parts):
            if part == 'src' and i + 1 < len(parts):
                # Check if this looks like a plugin (has templates, static, etc.)
                potential_plugin = parts[i + 1]
                if i + 2 < len(parts):  # Has more path after src/plugin_name
                    return '/'.join(parts[i + 1:])

        # Fallback: return the filename
        return path.name

    def extract_translation_keys(content: str) -> set:
        """
        Extract all __TRANSLATE_key__ placeholders from content.

        Args:
            content: Content to scan for translation keys

        Returns:
            Set of translation keys found in the content
        """
        pattern = r'__TRANSLATE_([a-z0-9_]+)__'
        matches = re.findall(pattern, content)
        return set(matches)

    def replace_placeholders(content: str, language: str, plugin_path: str = None) -> str:
        """
        Replace __TRANSLATE_key__ placeholders with actual translations.

        This function now validates that ALL required translations are available
        for the specified language. If any translations are missing, it logs
        a strong warning and returns None to indicate fallback is needed.

        Args:
            content: Template content with placeholders
            language: Language code for translations
            plugin_path: Path to the localized file (used to determine which plugin's translations to use)

        Returns:
            Content with placeholders replaced by translations, or None if translations are incomplete
        """
        if not plugin_path:
            # No plugin path provided, return content unchanged
            logger.warning("No plugin path provided for translation replacement.")
            return content

        try:
            # Extract all translation keys from the content
            required_keys = extract_translation_keys(content)

            if not required_keys:
                # No translation keys found, return content as-is
                return content

            # Extract plugin name from the localized file path
            # Path format: .../localized_files/[coreplugins|external_plugins]/[plugin_name]/...
            path_parts = Path(plugin_path).parts

            # Find 'localized_files' in the path
            if 'localized_files' in path_parts:
                idx = path_parts.index('localized_files')
                if idx + 2 < len(path_parts):
                    # Get plugin name (should be at idx+2)
                    plugin_type = path_parts[idx + 1]  # 'coreplugins' or 'external_plugins'
                    plugin_name = path_parts[idx + 2]

                    # Load translations for this plugin
                    translations_path = TRANSLATIONS_DIR / plugin_type / plugin_name / "translations.json"
                    plugin_translations = {}
                    if translations_path.exists():
                        try:
                            with open(translations_path, 'r', encoding='utf-8') as f:
                                 plugin_translations = json.load(f)
                        except Exception as e:
                            logger.warning(f"Could not load translations from {translations_path}: {e}")
                            return None  # Fallback to original file

                    if language in plugin_translations:
                        translations = plugin_translations[language]

                        # Check if ALL required translations are available
                        missing_keys = required_keys - set(translations.keys())

                        if missing_keys:
                            # Some translations are missing - log strong warning and return None
                            missing_list = ', '.join(sorted(missing_keys))
                            logger.warning(
                                f"\n" +
                                f"="*80 + "\n" +
                                f"MISSING TRANSLATIONS DETECTED!\n" +
                                f"Plugin: {plugin_name}\n" +
                                f"Language: {language}\n" +
                                f"File: {plugin_path}\n" +
                                f"Missing keys: {missing_list}\n" +
                                f"Falling back to original file to avoid showing placeholders.\n" +
                                f"="*80
                            )
                            return None  # Signal that fallback is needed

                        # All translations are available - proceed with replacement
                        def replace_match(match):
                            key = match.group(1)
                            return translations.get(key, match.group(0))  # This shouldn't happen now

                        return re.sub(r'__TRANSLATE_([a-z0-9_]+)__', replace_match, content)
                    else:
                        # No translations for this language
                        logger.warning(
                            f"\n" +
                            f"="*80 + "\n" +
                            f"NO TRANSLATIONS FOR LANGUAGE!\n" +
                            f"Plugin: {plugin_name}\n" +
                            f"Language: {language}\n" +
                            f"File: {plugin_path}\n" +
                            f"Required keys: {', '.join(sorted(required_keys))}\n" +
                            f"Falling back to original file.\n" +
                            f"="*80
                        )
                        return None  # Signal that fallback is needed
                else:
                    logger.warning(f"Could not extract plugin info from path: {plugin_path}")
                    return None
            else:
                logger.warning(f"Path does not contain 'localized_files': {plugin_path}")
                return None

        except Exception as e:
            logger.warning(f"Error in replace_placeholders: {e}")
            return None  # Fallback to original file on any error

    def get_localized_file_path(original_path: str) -> Path:
        """
        Convert an original file path to its localized version path.

        Examples:
        - chat/templates/chat.jinja2 -> localized_files/coreplugins/chat/templates/chat.i18n.jinja2
        - my_plugin/templates/page.jinja2 -> localized_files/external_plugins/my_plugin/templates/page.i18n.jinja2
        """
        plugin_root = extract_plugin_root(original_path)
        path = Path(plugin_root)

        # Determine if this is a core plugin or external plugin based on the absolute path
        if 'coreplugins' in original_path:
            base_dir = LOCALIZED_FILES_DIR / "coreplugins"
        else:
            base_dir = LOCALIZED_FILES_DIR / "external_plugins"

        # Add .i18n before the file extension
        stem = path.stem
        suffix = path.suffix
        new_filename = f"{stem}.i18n{suffix}"

        localized_path = base_dir / path.parent / new_filename
        return localized_path

    def load_plugin_translations(plugin_path: str):
        """Load translations for a specific plugin from disk."""

        translations_file = get_plugin_translations_path(plugin_path)

        if translations_file.exists():
            try:
                with open(translations_file, 'r', encoding='utf-8') as f:
                    return json.load(f)
            except Exception as e:
                logger.warning(f"Could not load translations from {translations_file}: {e}")
        else:
            logger.warning(f"Translations file does not exist at {translations_file}")
        return {}

    def get_plugin_translations_path(original_path: str) -> Path:
        """
        Get the path where translations should be stored for a given file.

        Example:
        /files/mindroot/src/mindroot/coreplugins/check_list/inject/admin.jinja2
        -> translations/coreplugins/check_list/translations.json
        """
        plugin_root = extract_plugin_root(original_path)

        # Determine if this is a core plugin or external plugin based on the absolute path
        if 'coreplugins' in original_path:
            base_dir = TRANSLATIONS_DIR / "coreplugins"
        else:
            base_dir = TRANSLATIONS_DIR / "external_plugins"

        # Get just the plugin name (first part of plugin_root)
        plugin_name = Path(plugin_root).parts[0]

        return base_dir / plugin_name / "translations.json"