from flask import jsonify, request

from api import etag_response, require_auth
from api.template import template_bp
from db import get_db
from db.models.PathTemplate import PathTemplate


@template_bp.route('/path/<int:template_id>', methods=['GET'])
@etag_response
def get_path_template(template_id):
    with get_db() as session:
        template = session.query(PathTemplate).get(template_id)
        if template is None:
            return jsonify({}), 204
        return jsonify(template.to_dict()), 200

@template_bp.route('/path/', methods=['GET'])
@etag_response
def get_path_templates():
    with get_db() as session:
        templates = session.query(PathTemplate).all()
        return jsonify([template.to_dict() for template in templates]), 200


@template_bp.route('/path/', methods=['POST'])
@require_auth(roles=['admin'])
def create_path_template():
    data = request.json
    if "title" not in data:
        return jsonify({"error": "title is missing"}), 400
    title = data.get("title")
    structure = data.get("structure")
    template = PathTemplate(title=title, structure=structure)
    try:
        with get_db() as session:
            session.add(template)
            session.commit()
            return template.to_dict(), 200
    except Exception as e:
        return jsonify({"error": "failed to create path template"}), 400


@template_bp.route('/path/<int:template_id>', methods=['PUT', 'PATCH'])
@require_auth(roles=['admin'])
def update_path_template(template_id):
    data = request.json
    with get_db() as session:
        template = session.query(PathTemplate).get(template_id)
        if template is None:
            return jsonify({'error': 'path template not found'}), 400
        title = data.get("title", template.title)
        structure = data.get("structure", template.structure)
        template.title = title
        template.structure = structure
        session.commit()
        return jsonify(template.to_dict()), 200


@template_bp.route('/path/<int:template_id>', methods=['DELETE'])
@require_auth(roles=['admin'])
def delete_path_template(template_id):
    with get_db() as session:
        template = session.query(PathTemplate).get(template_id)
        if template is None:
            return jsonify({'error': 'path template not found'}), 400
        session.delete(template)
        session.commit()
        return jsonify({'message': 'deleted'}), 200