package com.kimgo.wepush.controller;

import com.kimgo.wepush.model.WeChatMsg;
import com.kimgo.wepush.response.ServerResponseEntity;
import com.kimgo.wepush.service.HandleWeChatMsgService;
import jakarta.validation.Valid;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

@RestController
@Validated
@RequestMapping(value = "/api",method = RequestMethod.POST)
public class WeChatMsgForwarderController {

    private final Logger logger = LoggerFactory.getLogger(WeChatMsgForwarderController.class);

    private final HandleWeChatMsgService handleWeChatMsgService;

    public WeChatMsgForwarderController(HandleWeChatMsgService handleWeChatMsgService) {
        this.handleWeChatMsgService = handleWeChatMsgService;
    }

    /**
     * 接收微信消息。
     *
     * @param accessToken 访问令牌，用于验证请求的合法性。该参数通过请求头传递。
     * @param weChatMsg 微信消息体，包含消息的各种内容。该参数通过请求体传递，并需通过验证。
     * @return 返回处理结果，如果处理成功，返回成功状态和处理信息；如果失败，返回失败状态和错误信息。
     */
    @PostMapping("/wechat")
    public ServerResponseEntity receiveMsg(@RequestHeader("accessToken") String accessToken,
                                           @RequestBody @Valid WeChatMsg weChatMsg){
        logger.info("weChatMsg: {}",weChatMsg.toString());
        // 检查accessToken是否为空，为空则返回错误信息
        if(accessToken == null){
            logger.warn("Access token is missing or empty");
            return ServerResponseEntity.fail("accessToken cannot be empty.");
        }
        // 检查weChatMsg消息体是否有效，无效则返回错误信息
        if (weChatMsg.isInvalid()) {
            logger.debug("CallInfo has invalid fields.");
            return ServerResponseEntity.fail("json body value error.");
        }
        // 调用服务处理微信消息
        return handleWeChatMsgService.handleMsg(accessToken,weChatMsg);
    }
}