from flask import Blueprint, request, jsonify
from api import require_auth
from db import get_db
from db.models.Markdown import Markdown
from db.models.Path import Path
from api import limiter
import logging
logger = logging.getLogger(__name__)

path_bp = Blueprint('path', __name__, url_prefix='/api/path')

@path_bp.route('/', methods=['GET'])
@limiter.limit('5 per minute')
def get_root_paths():
    with get_db() as session:
        paths = session.query(Path).filter(Path.parent_id == 1)
        return jsonify([pth.to_dict() for pth in paths]), 200

@path_bp.route('/<int:path_id>', methods=['GET'])
@limiter.limit('5 per minute')
def get_path(path_id):
    with get_db() as session:
        path = session.query(Path).get(path_id)
        if path is None:
            return jsonify({"error": "file not found"}), 404
        return jsonify(path.to_dict()), 200

@path_bp.route('/parent/<int:parent_id>', methods=['GET'])
@limiter.limit('5 per minute')
def get_path_by_parent(parent_id):
    with get_db() as session:
        paths = session.query(Path).filter(Path.parent_id == parent_id).all()
        return jsonify([pth.to_dict() for pth in paths]), 200

@path_bp.route('/', methods=['POST'])
@limiter.limit('60 per minute')
@require_auth(roles=['admin', 'creator'])
def create_path():
    data = request.json
    if not data or 'name' not in data or 'parent_id' not in data:
        return jsonify({"error": "bad request"}), 400
    with get_db() as session:
        if data['parent_id'] != 0 and not session.query(Path).get(data['parent_id']):
            return jsonify({"error": "path not found"}), 404
        if session.query(Path).filter_by(name=data['name'], parent_id=data['parent_id']).first():
            return jsonify({"error": "Path already exists under the parent"}), 409
        new_path = Path(name=data['name'], parent_id=data['parent_id'])
        session.add(new_path)
        session.commit()
        return jsonify(new_path.to_dict()), 201

@path_bp.route('/<int:path_id>', methods=['PUT'])
@limiter.limit('30 per minute')
@require_auth(roles=['admin'])
def update_path(path_id):
    data = request.json
    if not data or 'name' not in data or 'parent_id' not in data:
        return jsonify({"error": "bad request"}), 400
    with get_db() as session:
        path = session.query(Path).get(path_id)
        if path is None:
            return jsonify({"error": "path not found"}), 404
        if session.query(Path).filter_by(name=data['name'], parent_id=data['parent_id']).first():
            return jsonify({"error": "Path already exists under the parent"}), 409
        path.name = data['name']
        path.parent_id = data['parent_id']
        session.commit()
        return jsonify(path.to_dict()), 200

@path_bp.route('/<int:path_id>', methods=['DELETE'])
@limiter.limit('60 per minute')
@require_auth(roles=['admin'])
def delete_path(path_id):
    with get_db() as session:
        path = session.query(Path).get(path_id)
        if not path:
            return jsonify({"error": "path not found"}), 404
        if session.query(Path).filter_by(parent_id=path_id).first():
            return jsonify({"error": "can not delete non empty path"}), 409
        if session.query(Markdown).filter_by(path_id=path_id).first():
            return jsonify({"error": "can not delete non empty path"}), 409
        session.delete(path)
        session.commit()
        return jsonify({"message": "path deleted"}), 200