from flask import Flask, request, jsonify
# from flask_cors import CORS  # 跨域支持
from typing import Dict, Any, List
import traceback
import logging

# 首先导入日志配置模块，确保日志系统在导入其他模块之前就配置好
import logger_config

# 确保日志系统已正确配置（因为可能多次导入，特别是gunicorn多worker情况下）
logger_config.setup_logging()

# 获取应用日志器
logger = logger_config.get_logger("TextGenerationAPI")

# 现在导入chat模块（它会导入conf等模块，此时日志已经配置好了）
from chat import gen_title, generate_text, check_image_url

# 验证chat和llm模块的logger是否正确配置（在导入后验证）
chat_logger = logging.getLogger("chat")
llm_logger = logging.getLogger("llm")

# 确保chat和llm的logger有handler（通过propagate到root logger）
chat_logger.propagate = True
llm_logger.propagate = True

logger.info("Flask应用启动，日志系统已初始化")
logger.info(f"chat模块logger级别: {chat_logger.getEffectiveLevel()}, llm模块logger级别: {llm_logger.getEffectiveLevel()}")
logger.info(f"根logger级别: {logging.root.getEffectiveLevel()}, handlers数量: {len(logging.root.handlers)}")

app = Flask(__name__)
# CORS(app)  # 允许所有域访问（生产环境应限制）



@app.route('/api/description', methods=['POST'])
def request_description():
    """文本生成核心接口 
    
    请求体要求（JSON格式）:
    {
        "plm_info": "商品详细信息文本",
        "img": "https://example.com/image.jpg",
        "graphic_label": ["标签1", "标签2"]
    }
    """
    try:
        data = request.get_json()
        if not data:
            return jsonify({"error": "The request body must be in JSON format."}), 400
            
        logger.info(f"收到请求数据：{data}")
        required_fields = ["spu",'plm_info', 'img', 'graphic_label']
        if 'plm_info' not in data or len(data["plm_info"])<1:
            return jsonify({"error": f"Contact the designer to maintain product selling points data(plm_info)"}), 400
        missing = [field for field in required_fields if field not in data]
        if missing:
            return jsonify({"error": f"Necessary values are missing: {missing}"}), 400
        is_valid, message=check_image_url(data['img'])
        if not is_valid:
            return jsonify({"error": message}), 400

        if not isinstance(data['graphic_label'], list) or \
           not all(isinstance(item, str) for item in data['graphic_label']):
            return jsonify({"error": "The graphic_label must be a list of strings."}), 400

        en,kw = generate_text(
            plm_info=data['plm_info'],
            img=data['img'],
            graphic_label=data['graphic_label']
        )
        logger.info(f"生成描述：{en}")
        logger.info(f"生成关键词：{kw}")
        return jsonify({
            "spu": data['spu'],  # 示例请求ID（实际应生成唯一标识）
            "result":{"descr":en,
                        "keywords":kw}
                    }), 200
        
    except Exception as e:
        logger.error(f"处理失败: {str(e)}\n{traceback.format_exc()}")
        return jsonify({
            "error": "Internal server error.",
            "detail": str(e)
        }), 500
    


@app.route('/api/title', methods=['POST'])
def request_title():
    """文本生成核心接口 
    
    请求体要求（JSON格式）:
    {
        "plm_info": "商品详细信息文本",
        "img": "https://example.com/image.jpg",
        "graphic_label": ["标签1", "标签2"]
    }
    """
    try:
        data = request.get_json(force=True)
        if not data:
            return jsonify({"error": "The request body must be in JSON format."}), 400
            
        logger.info(f"收到请求数据：{data}")

        required_fields = ["spu",'desc']
        missing = [field for field in required_fields if field not in data]
        if missing:
            return jsonify({"error": f"Necessary values are missing: {missing}"}), 400
        logger.info(f"11111111111数据完整：{data}")
        
        if not isinstance(data['tags'], list) or \
           not all(isinstance(item, str) for item in data['tags']) :
            return jsonify({"error": "The tags must be a list of strings."}), 400
        reference_title = data.get("reference_title", "")
        tags = data.get("tags", "")
        logger.info(f"数据完整：{data}")
        result = gen_title(
            info=data['desc'],
            tags=tags,
            referencr_title=reference_title
        )
        logger.info(f"生成标题：{result}")
        # 5. 构造标准化响应 
        return jsonify({
            "spu": data['spu'],  # 示例请求ID（实际应生成唯一标识）
            "result":result
                    }), 200
        
    except Exception as e:
        # 异常处理与日志记录 
        logger.error(f"处理失败: {str(e)}\n{traceback.format_exc()}")
        return jsonify({
            "error": "服务器内部错误",
            "detail": str(e)
        }), 500
if __name__ == '__main__':
    # 启动服务（生产环境应使用WSGI服务器） 
    app.run(host='0.0.0.0', port=5555, debug=False)