import os

from flask import Flask, jsonify

from watermark_generate.controller.function_test import test
from watermark_generate.controller.watermark_generate_controller import generator
from watermark_generate.exceptions import BusinessException



def create_app():
    app = Flask(__name__)

    # 设置上传目录
    UPLOAD_FOLDER = './data/uploads'
    EXTRACT_FOLDER = './data/extract'

    # 确保目录存在
    os.makedirs(UPLOAD_FOLDER, exist_ok=True)
    os.makedirs(EXTRACT_FOLDER, exist_ok=True)

    # 配置 Flask
    app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
    app.config['EXTRACT_FOLDER'] = EXTRACT_FOLDER

    # 注册蓝图
    app.register_blueprint(generator)
    app.register_blueprint(test)

    @app.errorhandler(BusinessException)
    def handle_business_exception(ex):
        """处理业务异常，返回JSON提示"""
        return jsonify({"message": ex.message, 'code': ex.code}), 500

    return app