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# Source code for mindroot.lib.plugins.manifest

    import json
    import os
    import shutil
    import tempfile
    import logging
    from datetime import datetime
    from pathlib import Path

    # Central definition of manifest file location
    MANIFEST_FILE = 'data/plugin_manifest.json'

    # Setup logging
    logger = logging.getLogger(__name__)

    def _get_absolute_paths():
        """Get absolute paths for all manifest-related files.

        Returns:
            tuple: (manifest_abs_path, root_manifest_abs_path, data_dir_abs_path)
        """
        cwd = os.getcwd()
        manifest_abs_path = os.path.abspath(os.path.join(cwd, MANIFEST_FILE))
        root_manifest_abs_path = os.path.abspath(os.path.join(cwd, 'plugin_manifest.json'))
        data_dir_abs_path = os.path.abspath(os.path.join(cwd, 'data'))

        return manifest_abs_path, root_manifest_abs_path, data_dir_abs_path

    def _backup_manifest(manifest_path):
        """Create a backup of the existing manifest file.

        Args:
            manifest_path (str): Absolute path to the manifest file

        Returns:
            str: Path to backup file, or None if backup failed
        """
        if not os.path.exists(manifest_path):
            return None

        try:
            timestamp = datetime.now().strftime('%Y%m%d_%H%M%S')
            backup_path = f"{manifest_path}.backup_{timestamp}"
            shutil.copy2(manifest_path, backup_path)
            logger.info(f"Created manifest backup: {backup_path}")
            return backup_path
        except Exception as e:
            logger.error(f"Failed to create manifest backup: {e}")
            return None

    def _atomic_write_manifest(manifest_path, manifest_data):
        """Atomically write manifest data to file.

        Args:
            manifest_path (str): Absolute path to the manifest file
            manifest_data (dict): Manifest data to write

        Returns:
            bool: True if successful, False otherwise
        """
        try:
            # Ensure directory exists
            os.makedirs(os.path.dirname(manifest_path), exist_ok=True)

            # Write to temporary file first
            with tempfile.NamedTemporaryFile(mode='w', suffix='.tmp',
                                           dir=os.path.dirname(manifest_path),
                                           delete=False) as tmp_file:
                json.dump(manifest_data, tmp_file, indent=2)
                tmp_path = tmp_file.name

            # Atomic move to final location
            shutil.move(tmp_path, manifest_path)
            logger.debug(f"Atomically wrote manifest to: {manifest_path}")
            return True

        except Exception as e:
            logger.error(f"Failed to atomically write manifest: {e}")
            # Clean up temp file if it exists
            try:
                if 'tmp_path' in locals() and os.path.exists(tmp_path):
                    os.unlink(tmp_path)
            except:
                pass
            return False

    def _validate_manifest(manifest_path):
        """Validate that a manifest file exists and contains valid JSON.

        Args:
            manifest_path (str): Absolute path to the manifest file

        Returns:
            tuple: (is_valid, manifest_data_or_none)
        """
        if not os.path.exists(manifest_path):
            return False, None

        try:
            with open(manifest_path, 'r') as f:
                manifest_data = json.load(f)

            # Basic structure validation
            if not isinstance(manifest_data, dict):
                logger.warning(f"Manifest is not a dict: {manifest_path}")
                return False, None

            if 'plugins' not in manifest_data:
                logger.warning(f"Manifest missing 'plugins' key: {manifest_path}")
                return False, None

            return True, manifest_data

        except json.JSONDecodeError as e:
            logger.warning(f"Manifest contains invalid JSON: {manifest_path} - {e}")
            return False, None
        except Exception as e:
            logger.error(f"Error validating manifest: {manifest_path} - {e}")
            return False, None

    def _migrate_manifest_from_root():
        """Migrate manifest from root directory to data directory if needed.

        This function consolidates the migration logic and uses absolute paths.

        Returns:
            bool: True if migration was successful or not needed, False if failed
        """
        manifest_abs_path, root_manifest_abs_path, data_dir_abs_path = _get_absolute_paths()

        logger.debug(f"Checking for manifest migration:")
        logger.debug(f"  Target: {manifest_abs_path}")
        logger.debug(f"  Source: {root_manifest_abs_path}")

        # If target already exists and is valid, no migration needed
        is_valid, _ = _validate_manifest(manifest_abs_path)
        if is_valid:
            logger.debug(f"Valid manifest already exists at: {manifest_abs_path}")
            return True

        # If target exists but is invalid, back it up
        if os.path.exists(manifest_abs_path):
            logger.warning(f"Invalid manifest found at {manifest_abs_path}, backing up")
            _backup_manifest(manifest_abs_path)

        # Check if source manifest exists and is valid
        is_valid, manifest_data = _validate_manifest(root_manifest_abs_path)
        if is_valid:
            logger.info(f"Migrating manifest from {root_manifest_abs_path} to {manifest_abs_path}")

            # Ensure data directory exists
            os.makedirs(data_dir_abs_path, exist_ok=True)

            # Atomic write to new location
            if _atomic_write_manifest(manifest_abs_path, manifest_data):
                # Remove old file only after successful write
                try:
                    os.unlink(root_manifest_abs_path)
                    logger.info(f"Successfully migrated manifest and removed old file")
                    return True
                except Exception as e:
                    logger.warning(f"Manifest migrated but failed to remove old file: {e}")
                    return True
            else:
                logger.error(f"Failed to write migrated manifest")
                return False

        logger.debug(f"No valid manifest found to migrate from {root_manifest_abs_path}")
        return True  # Not an error - just no migration needed

    def create_default_plugin_manifest():
        """Create a new default manifest file.

        This function first attempts migration, then creates from default template if needed.
        """
        manifest_abs_path, _, data_dir_abs_path = _get_absolute_paths()

        logger.info(f"Creating default plugin manifest at: {manifest_abs_path}")

        # First attempt migration from root directory
        if _migrate_manifest_from_root():
            # Check if migration was successful
            is_valid, _ = _validate_manifest(manifest_abs_path)
            if is_valid:
                logger.info(f"Manifest successfully migrated from root directory")
                return

        # Migration didn't work, create from default template
        logger.info(f"Creating manifest from default template")

        # Backup existing file if it exists (even if invalid)
        if os.path.exists(manifest_abs_path):
            _backup_manifest(manifest_abs_path)

        try:
            # Read default template
            default_manifest_path = os.path.join(os.path.dirname(__file__), 'default_plugin_manifest.json')
            with open(default_manifest_path, 'r') as f:
                default_manifest = json.load(f)

            # Ensure data directory exists
            os.makedirs(data_dir_abs_path, exist_ok=True)

            # Atomic write
            if _atomic_write_manifest(manifest_abs_path, default_manifest):
                logger.info(f"Successfully created default manifest")
            else:
                logger.error(f"Failed to create default manifest")
                raise Exception("Failed to write default manifest")

        except Exception as e:
            logger.error(f"Failed to create default manifest: {e}")
            raise

    def load_plugin_manifest():
        """Load the plugin manifest file.

        Returns:
            dict: The manifest data structure
        """
        manifest_abs_path, _, _ = _get_absolute_paths()

        # Validate existing manifest
        is_valid, manifest_data = _validate_manifest(manifest_abs_path)

        if is_valid:
            logger.debug(f"Loaded valid manifest from: {manifest_abs_path}")
            return manifest_data

        # Manifest is missing or invalid, create default
        logger.warning(f"Manifest missing or invalid at {manifest_abs_path}, creating default")
        create_default_plugin_manifest()

        # Load the newly created manifest
        is_valid, manifest_data = _validate_manifest(manifest_abs_path)
        if is_valid:
            return manifest_data
        else:
            logger.error(f"Failed to create valid default manifest")
            raise Exception("Could not load or create valid plugin manifest")

    def save_plugin_manifest(manifest):
        """Save the plugin manifest file.

        Args:
            manifest (dict): The manifest data structure to save
        """
        manifest_abs_path, _, _ = _get_absolute_paths()

        # Backup existing manifest before saving
        _backup_manifest(manifest_abs_path)

        # Atomic write
        if not _atomic_write_manifest(manifest_abs_path, manifest):
            logger.error(f"Failed to save plugin manifest")
            raise Exception("Failed to save plugin manifest")

        logger.debug(f"Successfully saved manifest to: {manifest_abs_path}")

    def update_plugin_manifest(plugin_name, source, source_path, remote_source=None, version="0.0.1", metadata=None):
        """Update or add a plugin entry in the manifest.

        Args:
            plugin_name (str): Name of the plugin
            source (str): Source type ('core', 'local', 'github')
            source_path (str): Path to the plugin
            remote_source (str, optional): GitHub repository reference
            version (str, optional): Plugin version
            metadata (dict, optional): Plugin metadata including commands and services
        """
        manifest = load_plugin_manifest()
        category = 'installed' if source != 'core' else 'core'

        # Try to read plugin_info.json if metadata not provided
        if not metadata and source_path:
            plugin_info_path = os.path.join(source_path, 'plugin_info.json')
            if os.path.exists(plugin_info_path):
                try:
                    with open(plugin_info_path, 'r') as f:
                        metadata = json.load(f)
                except json.JSONDecodeError:
                    metadata = None

        manifest['plugins'][category][plugin_name] = {
            'enabled': True,
            'source': source,
            'source_path': source_path,
            'version': version,
            'commands': metadata.get('commands', []) if metadata else [],
            'services': metadata.get('services', []) if metadata else [],
            'dependencies': metadata.get('dependencies', []) if metadata else []
        }

        if remote_source:
            manifest['plugins'][category][plugin_name]['remote_source'] = remote_source

        save_plugin_manifest(manifest)

    def toggle_plugin_state(plugin_name, enabled):
        """Toggle a plugin's enabled state.

        Args:
            plugin_name (str): Name of the plugin
            enabled (bool): New enabled state

        Returns:
            bool: True if successful, False if plugin not found
        """
        manifest = load_plugin_manifest()
        for category in manifest['plugins']:
            if plugin_name in manifest['plugins'][category]:
                manifest['plugins'][category][plugin_name]['enabled'] = enabled
                save_plugin_manifest(manifest)
                return True
        return False

    def list_enabled(include_category=True):
        """List all enabled plugins.

        Args:
            include_category (bool): Whether to include the category in results

        Returns:
            list: List of enabled plugins, optionally with categories
        """
        enabled_list = []
        manifest = load_plugin_manifest()
        for category in manifest['plugins']:
            for plugin_name, plugin_info in manifest['plugins'][category].items():
                if plugin_info.get('enabled'):
                    if include_category:
                        enabled_list.append((plugin_name, category))
                    else:
                        enabled_list.append(plugin_name)
        return enabled_list