"""Client for Nextcloud Notes app operations."""

from typing import Dict, List, Any, Optional
import logging

from .base_client import BaseNextcloudClient

logger = logging.getLogger(__name__)


class NotesClient(BaseNextcloudClient):
    """Client for Nextcloud Notes app operations."""
    
    async def get_settings(self) -> Dict[str, Any]:
        """Get Notes app settings."""
        response = await self._make_request("GET", "/apps/notes/api/v1/settings")
        return response.json()
    
    async def get_all_notes(self) -> List[Dict[str, Any]]:
        """Get all notes."""
        response = await self._make_request("GET", "/apps/notes/api/v1/notes")
        return response.json()
    
    async def get_note(self, note_id: int) -> Dict[str, Any]:
        """Get a specific note by ID."""
        response = await self._make_request("GET", f"/apps/notes/api/v1/notes/{note_id}")
        return response.json()
    
    async def create_note(
        self,
        title: Optional[str] = None,
        content: Optional[str] = None,
        category: Optional[str] = None,
    ) -> Dict[str, Any]:
        """Create a new note."""
        body = {}
        if title:
            body["title"] = title
        if content:
            body["content"] = content
        if category:
            body["category"] = category
        
        response = await self._make_request("POST", "/apps/notes/api/v1/notes", json=body)
        return response.json()
    
    async def update(
        self,
        note_id: int,
        etag: str,
        title: Optional[str] = None,
        content: Optional[str] = None,
        category: Optional[str] = None,
    ) -> Dict[str, Any]:
        """Update an existing note."""
        # Get current note details to check for category change
        old_note = None
        try:
            if category is not None:
                old_note = await self.get_note(note_id)
                old_category = old_note.get("category", "")
                logger.info(f"Current category for note {note_id}: '{old_category}'")
        except Exception as e:
            logger.warning(f"Could not fetch current note {note_id} details before update: {e}")
            old_note = None
        
        # Prepare update body
        body = {}
        if title:
            body["title"] = title
        if content:
            body["content"] = content
        if category:
            body["category"] = category
        
        logger.info(f"Attempting to update note {note_id} with etag {etag}. Body: {body}")
        
        response = await self._make_request(
            "PUT",
            f"/apps/notes/api/v1/notes/{note_id}",
            json=body,
            headers={"If-Match": f'"{etag}"'}
        )
        
        logger.info(f"Update response for note {note_id}: Status {response.status_code}")
        updated_note = response.json()
        
        # Check for category change and cleanup old attachment directory if needed
        if old_note and category is not None and old_note.get("category", "") != category:
            logger.info(f"Category changed from '{old_note.get('category', '')}' to '{category}' - cleaning up old attachment directory")
            try:
                # Import here to avoid circular imports
                from .webdav_client import WebDAVClient
                webdav_client = WebDAVClient(self._client, self.username)
                await webdav_client.cleanup_old_attachment_directory(
                    note_id=note_id, 
                    old_category=old_note.get("category", "")
                )
            except Exception as e:
                logger.error(f"Error cleaning up old attachment directory for note {note_id}: {e}")
        
        return updated_note
    
    async def delete_note(self, note_id: int) -> Dict[str, Any]:
        """Delete a note and its attachments."""
        # Fetch note details first to get category for cleanup
        try:
            note_details = await self.get_note(note_id)
            category = note_details.get("category", "")
            
            # Determine potential categories for cleanup
            potential_categories = []
            if category:
                potential_categories.append(category)
            if category != "":
                potential_categories.append("")  # Empty category
            
            logger.info(f"Note {note_id} has category: '{category}', will check attachment directories in: {potential_categories}")
        except Exception as e:
            logger.warning(f"Could not fetch note {note_id} details before deletion: {e}")
            potential_categories = ["", "Unknown"]  # Try common categories
        
        # Delete the note via API
        logger.info(f"Deleting note {note_id} via API")
        response = await self._make_request("DELETE", f"/apps/notes/api/v1/notes/{note_id}")
        logger.info(f"Note {note_id} deleted successfully via API")
        json_response = response.json()
        
        # Clean up attachment directories
        try:
            from .webdav_client import WebDAVClient
            webdav_client = WebDAVClient(self._client, self.username)
            
            for cat in potential_categories:
                try:
                    await webdav_client.cleanup_note_attachments(note_id, cat)
                except Exception as e:
                    logger.warning(f"Failed to cleanup attachments for category '{cat}': {e}")
        except Exception as e:
            logger.warning(f"Error during attachment cleanup: {e}")
        
        return json_response
    
    async def append_content(self, note_id: int, content: str) -> Dict[str, Any]:
        """Append content to an existing note with a separator."""
        logger.info(f"Appending content to note {note_id}")
        
        # Get current note
        current_note = await self.get_note(note_id)
        
        # Use fixed separator for consistency
        separator = "\n---\n"
        
        # Combine content
        existing_content = current_note.get("content", "")
        if existing_content:
            new_content = existing_content + separator + content
        else:
            new_content = content  # No separator needed for empty notes
        
        logger.info(f"Combining existing content ({len(existing_content)} chars) with new content ({len(content)} chars)")
        
        # Update with combined content
        return await self.update(
            note_id=note_id,
            etag=current_note["etag"],
            content=new_content,
            title=None,  # Keep existing title
            category=None,  # Keep existing category
        )