package com.wecom.robot.controller;

import com.wecom.robot.config.WecomConfig;
import com.wecom.robot.dto.ApiResponse;
import com.wecom.robot.entity.Message;
import com.wecom.robot.service.SessionManagerService;
import com.wecom.robot.util.WXBizMsgCrypt;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;

import java.util.Base64;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Slf4j
@RestController
@RequestMapping("/debug")
@RequiredArgsConstructor
public class DebugController {

    private final WecomConfig wecomConfig;
    private final SessionManagerService sessionManagerService;

    @GetMapping("/config")
    public ApiResponse<Map<String, Object>> getConfig() {
        Map<String, Object> config = new HashMap<>();
        config.put("corpId", wecomConfig.getCorpId());
        config.put("token", wecomConfig.getToken());
        config.put("encodingAesKey", wecomConfig.getEncodingAesKey());
        config.put("encodingAesKeyLength", wecomConfig.getEncodingAesKey() != null ? wecomConfig.getEncodingAesKey().length() : 0);
        
        try {
            byte[] aesKey = Base64.getDecoder().decode(wecomConfig.getEncodingAesKey() + "=");
            config.put("aesKeyLength", aesKey.length);
            config.put("aesKeyHex", bytesToHex(aesKey));
        } catch (Exception e) {
            config.put("aesKeyError", e.getMessage());
        }
        
        return ApiResponse.success(config);
    }

    @PostMapping("/decrypt")
    public ApiResponse<Map<String, Object>> testDecrypt(
            @RequestParam String msgSignature,
            @RequestParam String timestamp,
            @RequestParam String nonce,
            @RequestBody String encryptedXml) {
        
        Map<String, Object> result = new HashMap<>();
        result.put("msgSignature", msgSignature);
        result.put("timestamp", timestamp);
        result.put("nonce", nonce);
        
        try {
            WXBizMsgCrypt wxcpt = new WXBizMsgCrypt(
                    wecomConfig.getToken(),
                    wecomConfig.getEncodingAesKey(),
                    wecomConfig.getCorpId()
            );
            
            String decrypted = wxcpt.DecryptMsg(msgSignature, timestamp, nonce, encryptedXml);
            result.put("decrypted", decrypted);
            result.put("success", true);
        } catch (Exception e) {
            result.put("error", e.getMessage());
            result.put("success", false);
            log.error("解密测试失败", e);
        }
        
        return ApiResponse.success(result);
    }

    @GetMapping("/verify-url")
    public ApiResponse<Map<String, Object>> testVerifyUrl(
            @RequestParam String msgSignature,
            @RequestParam String timestamp,
            @RequestParam String nonce,
            @RequestParam String echostr) {
        
        Map<String, Object> result = new HashMap<>();
        result.put("msgSignature", msgSignature);
        result.put("timestamp", timestamp);
        result.put("nonce", nonce);
        result.put("echostr", echostr);
        
        try {
            WXBizMsgCrypt wxcpt = new WXBizMsgCrypt(
                    wecomConfig.getToken(),
                    wecomConfig.getEncodingAesKey(),
                    wecomConfig.getCorpId()
            );
            
            String decrypted = wxcpt.VerifyURL(msgSignature, timestamp, nonce, echostr);
            result.put("decrypted", decrypted);
            result.put("success", true);
        } catch (Exception e) {
            result.put("error", e.getMessage());
            result.put("success", false);
            log.error("URL验证测试失败", e);
        }
        
        return ApiResponse.success(result);
    }

    @GetMapping("/ai/session/{sessionId}/context")
    public ApiResponse<Map<String, Object>> getSessionAiContext(
            @PathVariable String sessionId) {
        
        Map<String, Object> result = new HashMap<>();
        
        result.put("sessionId", sessionId);
        
        List<Message> history = sessionManagerService.getSessionMessages(sessionId);
        result.put("historyCount", history.size());
        
        List<Map<String, Object>> historyList = new java.util.ArrayList<>();
        for (Message msg : history) {
            Map<String, Object> msgMap = new HashMap<>();
            msgMap.put("senderType", msg.getSenderType());
            msgMap.put("senderId", msg.getSenderId());
            msgMap.put("content", msg.getContent());
            msgMap.put("msgType", msg.getMsgType());
            msgMap.put("createdAt", msg.getCreatedAt() != null ? msg.getCreatedAt().toString() : null);
            historyList.add(msgMap);
        }
        result.put("history", historyList);
        
        return ApiResponse.success(result);
    }

    private String bytesToHex(byte[] bytes) {
        StringBuilder sb = new StringBuilder();
        for (byte b : bytes) {
            sb.append(String.format("%02x", b));
        }
        return sb.toString();
    }
}