from flask import Blueprint, jsonify, request, current_app
from utils.data_loader import load_data
from utils.json_crud import load_json, save_json, add_entry, delete_entry, update_entry
from models.service_model import ServiceModel
import os

DATA_DIR = os.path.join(os.path.dirname(__file__), '../data')
SERVICES_FILE = os.path.join(DATA_DIR, 'services.json')

services_bp = Blueprint('services', __name__, url_prefix='/api/services')

@services_bp.route('/', methods=['GET'])
def get_services():
    services = load_data('services.json')
    return jsonify(services)

@services_bp.route('/<service_id>', methods=['GET'])
def get_service(service_id):
    services = load_data('services.json')
    service = next((s for s in services if str(s.get('id')) == str(service_id)), None)
    if not service:
        return jsonify({"error": "Service not found"}), 404
    return jsonify(service)

@services_bp.route('/', methods=['POST'])
def create_service():
    key = request.headers.get('x-api-key')
    if key != current_app.config['API_KEY']:
        return jsonify({"error": "Unauthorized"}), 401

    services = load_json(SERVICES_FILE)
    entry = request.json or {}
    # generate new id
    new_id = max((s.get('id') for s in services), default=0) + 1
    model = ServiceModel({**entry, 'id': new_id})
    data = model.to_dict()

    added = add_entry(SERVICES_FILE, data)
    return jsonify(added), 201

@services_bp.route('/<service_id>', methods=['PUT', 'PATCH'])
def update_service(service_id):
    key = request.headers.get('x-api-key')
    if key != current_app.config['API_KEY']:
        return jsonify({"error": "Unauthorized"}), 401

    services = load_json(SERVICES_FILE)
    service = next((s for s in services if str(s.get('id')) == str(service_id)), None)
    if not service:
        return jsonify({"error": "Service not found"}), 404

    payload = request.json or {}
    updated = {**service, **payload}
    updated['id'] = service['id']

    saved = update_entry(SERVICES_FILE, updated['id'], updated)
    return jsonify(saved), 200

@services_bp.route('/<service_id>', methods=['DELETE'])
def delete_service(service_id):
    key = request.headers.get('x-api-key')
    if key != current_app.config['API_KEY']:
        return jsonify({"error": "Unauthorized"}), 401

    services = load_json(SERVICES_FILE)
    service = next((s for s in services if str(s.get('id')) == str(service_id)), None)
    if not service:
        return jsonify({"error": "Service not found"}), 404

    deleted = delete_entry(SERVICES_FILE, service_id)
    return jsonify(deleted), 200