"""
DAARION Memory Service - Integration API Endpoints
"""

from fastapi import APIRouter, HTTPException
from pydantic import BaseModel
from typing import Optional, List
import logging

from .integrations import obsidian_integrator, gdrive_integrator

logger = logging.getLogger(__name__)
router = APIRouter(prefix="/integrations", tags=["integrations"])


class SetVaultRequest(BaseModel):
    vault_path: str


class SyncRequest(BaseModel):
    output_dir: Optional[str] = "/tmp/daarion_sync"
    include_attachments: Optional[bool] = False
    folder_filter: Optional[List[str]] = None
    tag_filter: Optional[List[str]] = None


class GDriveSyncRequest(BaseModel):
    output_dir: Optional[str] = "/tmp/daarion_sync"
    folder_ids: Optional[List[str]] = None
    file_extensions: Optional[List[str]] = None


@router.get("/status")
async def get_integrations_status():
    """Get status of all integrations"""
    obsidian_status = obsidian_integrator.get_status()
    gdrive_status = gdrive_integrator.get_status()
    
    return {
        "obsidian": obsidian_status,
        "google_drive": gdrive_status
    }


# =====================
# OBSIDIAN ENDPOINTS
# =====================

@router.post("/obsidian/set-vault")
async def set_obsidian_vault(request: SetVaultRequest):
    """Set Obsidian vault path"""
    success = obsidian_integrator.set_vault_path(request.vault_path)
    if not success:
        raise HTTPException(status_code=400, detail="Invalid vault path")
    return {"status": "ok", "vault_path": request.vault_path}


@router.post("/obsidian/scan")
async def scan_obsidian_vault():
    """Scan Obsidian vault for notes"""
    if not obsidian_integrator.vault_path:
        raise HTTPException(status_code=400, detail="Vault path not set")
    
    stats = obsidian_integrator.scan_vault()
    return {
        "status": "ok",
        "stats": stats
    }


@router.get("/obsidian/search")
async def search_obsidian_notes(query: str, limit: int = 10):
    """Search Obsidian notes"""
    if not obsidian_integrator.notes_cache:
        raise HTTPException(status_code=400, detail="Vault not scanned")
    
    results = obsidian_integrator.search_notes(query, limit=limit)
    return {
        "query": query,
        "results": [
            {
                "title": r["title"],
                "path": r["path"],
                "tags": r["tags"],
                "match_score": r.get("match_score", 0),
                "preview": r["content"][:200] + "..." if len(r["content"]) > 200 else r["content"]
            }
            for r in results
        ]
    }


@router.post("/obsidian/sync")
async def sync_obsidian_vault(request: SyncRequest):
    """Sync Obsidian vault to DAARION"""
    if not obsidian_integrator.vault_path:
        raise HTTPException(status_code=400, detail="Vault path not set")
    
    if not obsidian_integrator.notes_cache:
        obsidian_integrator.scan_vault()
    
    from pathlib import Path
    output_path = Path(request.output_dir)
    output_path.mkdir(parents=True, exist_ok=True)
    
    stats = obsidian_integrator.sync_to_daarion(
        output_path,
        include_attachments=request.include_attachments,
        folder_filter=request.folder_filter,
        tag_filter=request.tag_filter
    )
    
    return {
        "status": "ok",
        "stats": stats
    }


@router.get("/obsidian/tags")
async def get_obsidian_tags():
    """Get all tags from Obsidian vault"""
    if not obsidian_integrator.tags_index:
        raise HTTPException(status_code=400, detail="Vault not scanned")
    
    return {
        "tags": [
            {"name": tag, "count": len(notes)}
            for tag, notes in sorted(
                obsidian_integrator.tags_index.items(),
                key=lambda x: len(x[1]),
                reverse=True
            )
        ]
    }


@router.get("/obsidian/graph")
async def get_obsidian_graph():
    """Get note connection graph"""
    if not obsidian_integrator.links_graph:
        raise HTTPException(status_code=400, detail="Vault not scanned")
    
    nodes = []
    links = []
    
    for note_title, note_data in obsidian_integrator.notes_cache.items():
        nodes.append({
            "id": note_title,
            "title": note_title,
            "tags": note_data["tags"],
            "size": note_data["size"]
        })
    
    for note_title, graph_data in obsidian_integrator.links_graph.items():
        for linked_note in graph_data["outbound"]:
            if linked_note in obsidian_integrator.notes_cache:
                links.append({
                    "source": note_title,
                    "target": linked_note
                })
    
    return {
        "nodes": nodes,
        "links": links
    }


# =====================
# GOOGLE DRIVE ENDPOINTS
# =====================

@router.post("/google-drive/auth")
async def authenticate_google_drive():
    """Authenticate with Google Drive"""
    success = gdrive_integrator.authenticate()
    if not success:
        raise HTTPException(
            status_code=401, 
            detail="Authentication failed. Check client_secrets.json"
        )
    return {"status": "ok", "authenticated": True}


@router.get("/google-drive/files")
async def list_google_drive_files(
    folder_id: Optional[str] = None,
    max_results: int = 50
):
    """List files from Google Drive"""
    files = gdrive_integrator.list_files(folder_id=folder_id, max_results=max_results)
    return {
        "files": files,
        "count": len(files)
    }


@router.post("/google-drive/sync")
async def sync_google_drive(request: GDriveSyncRequest):
    """Sync files from Google Drive"""
    from pathlib import Path
    output_path = Path(request.output_dir)
    output_path.mkdir(parents=True, exist_ok=True)
    
    stats = gdrive_integrator.sync_to_daarion(
        output_path,
        folder_ids=request.folder_ids,
        file_extensions=request.file_extensions
    )
    
    return {
        "status": "ok",
        "stats": stats
    }


@router.get("/google-drive/folders")
async def get_google_drive_folders():
    """Get folder structure from Google Drive"""
    structure = gdrive_integrator.get_folder_structure()
    return {"structure": structure}