from flask import Flask, jsonify, request
from flask_cors import CORS
import sqlite3
import os

# 获取当前文件所在目录
basedir = os.path.abspath(os.path.dirname(__file__))
db_path = os.path.join(basedir, '..', 'data', 'cars.db')

app = Flask(__name__)
CORS(app)

def get_db_connection():
    conn = sqlite3.connect(db_path)
    conn.row_factory = sqlite3.Row
    return conn

@app.route('/api/cars', methods=['GET'])
def get_all_cars():
    conn = get_db_connection()
    cars = conn.execute('SELECT * FROM cars').fetchall()
    conn.close()
    
    cars_list = [dict(car) for car in cars]
    return jsonify(cars_list)

@app.route('/api/cars/search', methods=['GET'])
def search_car():
    plate = request.args.get('plate', '')
    
    if not plate:
        return jsonify({'error': '请输入车牌号码'}), 400
    
    conn = get_db_connection()
    cars = conn.execute('SELECT * FROM cars WHERE plate LIKE ?', (f'%{plate}%',)).fetchall()
    conn.close()
    
    cars_list = [dict(car) for car in cars]
    return jsonify(cars_list)

@app.route('/api/cars/<plate>', methods=['GET'])
def get_car_by_plate(plate):
    conn = get_db_connection()
    car = conn.execute('SELECT * FROM cars WHERE plate = ?', (plate,)).fetchone()
    conn.close()
    
    if car is None:
        return jsonify({'error': '未找到该车牌号码对应的车主信息'}), 404
    
    return jsonify(dict(car))

if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0', port=5000)