package com.cyksj.web.controller.claude;

import com.cyksj.common.constant.Constant;
import com.cyksj.common.exception.BusinessRuntimeException;
import com.cyksj.dto.Result;
import com.cyksj.enums.GatewayResponse;
import com.cyksj.model.entity.Announcement;
import com.cyksj.model.entity.OAuthClient;
import com.cyksj.model.entity.RelayServer;
import com.cyksj.model.manage.views.OrderDonView;
import com.cyksj.model.request.ClaudeCodeApiKeysReq;
import com.cyksj.model.request.ClaudeCodeDelReq;
import com.cyksj.model.response.ClaudeCodePointsHistoryResp;
import com.cyksj.model.response.claudecode.ClaudeCodeResp;
import com.cyksj.model.views.ClaudeCodeUserApiKeysView;
import com.cyksj.model.views.ClaudeCodeUserInfoView;
import com.cyksj.service.claude.ClaudeCodeService;
import com.cyksj.service.claude.OAuthClaudeCodeService;
import com.cyksj.service.claude.RelayService;
import com.cyksj.service.user.UserBindRelationService;
import com.cyksj.service.claude.AnnouncementService;
import com.cyksj.model.entity.OAuthToken;
import com.cyksj.web.util.StpUserUtil;
import com.ejlchina.searcher.BeanSearcher;
import com.ejlchina.searcher.SearchResult;
import com.ejlchina.searcher.param.Operator;
import com.ejlchina.searcher.util.MapUtils;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;
import java.util.HashMap;
import java.util.ArrayList;

/**
 * server/claude code
 * 项目名: yhlxj11111111
 * 文件名: ClaudeCodeController
 * 创建者: JavaZou
 * 创建时间:2025/8/8 11:37
 */
@Slf4j
@RestController
@RequestMapping("/applet/claude/code")
@RequiredArgsConstructor
public class ClaudeCodeController {

	private final OAuthClaudeCodeService oAuthClaudeCodeService;

	private final ClaudeCodeService claudeCodeService;

	private final BeanSearcher beanSearcher;

	private final HttpServletRequest request;

	private final UserBindRelationService userBindRelationService;

	private final AnnouncementService announcementService;

	private final RelayService relayService;

	/**
	 * 用户创建API KEY
	 */
	@PostMapping("/create/apiKeys")
	public Result<String> createApiKeys(@RequestBody @Validated ClaudeCodeApiKeysReq req) throws Exception {
		long userId = StpUserUtil.getLoginIdAsLong();
		req.setUserId(userId);
		claudeCodeService.createApiKeys(req);
		return GatewayResponse.SUCCESS.newBuilder().toResult();
	}

	/**
	 * 用户api keys列表
	 */
	@GetMapping("/get/apiKeys")
	public Result<List<ClaudeCodeUserApiKeysView>> getUserApiKeys() throws Exception {
		long userId = StpUserUtil.getLoginIdAsLong();
		List<ClaudeCodeUserApiKeysView> userApiKeys = claudeCodeService.getUserApiKeys(userId);
		return GatewayResponse.SUCCESS.newBuilder().toResult(userApiKeys);
	}

	/**
	 * 删除api key
	 */
	@DeleteMapping("/delete/apiKeys")
	public Result<String> deleteApiKeysById(@RequestBody ClaudeCodeDelReq delReq) throws Exception {
		long userId = StpUserUtil.getLoginIdAsLong();
		delReq.setUserId(userId);
		claudeCodeService.deleteApiKeysById(delReq);
		return GatewayResponse.SUCCESS.newBuilder().toResult();
	}

	//================================================用户============================================================

	/**
	 * 用户订阅车票信息
	 */
	@GetMapping("/get/user/subs/info")
	public Result<ClaudeCodeUserInfoView> getUserSubsInfo() {
		long userId = StpUserUtil.getLoginIdAsLong();
		ClaudeCodeUserInfoView claudeCodeUserInfoView = claudeCodeService.getClaudeCodeUserSubsInfo(userId);
		return GatewayResponse.SUCCESS.newBuilder().toResult(claudeCodeUserInfoView);
	}

	/**
	 * 用户订阅历史
	 */
	@GetMapping("/get/user/orders")
	public Result<SearchResult<OrderDonView>> getUserOrders() {
		long userId = StpUserUtil.getLoginIdAsLong();
		List<Long> userIdList = userBindRelationService.getRelationUserIdList(userId, null);
		SearchResult<OrderDonView> search = beanSearcher.search(OrderDonView.class, MapUtils.flatBuilder(request.getParameterMap())
				.field(OrderDonView::getUserId, userIdList).op(Operator.InList)
				.field(OrderDonView::getGoodsId, Constant.CLAUDE_CODE_GOODS_ID)
				.field(OrderDonView::getStatus, Constant.noOrderAllStatus).op(Operator.NotIn)
				.build());
		return GatewayResponse.SUCCESS.newBuilder().toResult(search);
	}

	/**
	 * 用户积分明细
	 * - `page` (int, optional): 页码，默认1
	 * - `limit` (int, optional): 每页数量，默认20，最大100
	 * - `type` (string, optional): 积分类型过滤
	 */
	@GetMapping("/get/user/points/detail")
	public Result<ClaudeCodePointsHistoryResp> getUserPointsDetail(@RequestParam(defaultValue = "1") Integer page, @RequestParam(defaultValue = "10") Integer limit, String type) throws Exception {
		long userId = StpUserUtil.getLoginIdAsLong();
		ClaudeCodePointsHistoryResp resp = claudeCodeService.getUserPointsDetail(userId, type, page, limit);
		return GatewayResponse.SUCCESS.newBuilder().toResult(resp);
	}

	/**
	 * 仪表盘聚合
	 * 返回 当前订阅/余额卡片 + 今日汇总 + 今日请求列表
	 */
	@GetMapping("/get/dashboard")
	public Result<ClaudeCodeResp> getUserDashboard() throws Exception {
		long userId = StpUserUtil.getLoginIdAsLong();
		ClaudeCodeResp resp = claudeCodeService.getUserDashboard(userId);
		return GatewayResponse.SUCCESS.newBuilder().toResult(resp);
	}


	/**
	 * 余额卡片
	 * 单独返回余额卡片数据
	 */
	@GetMapping("/get/balance")
	public Result<ClaudeCodeResp> getUserBalance() throws Exception {
		long userId = StpUserUtil.getLoginIdAsLong();
		ClaudeCodeResp resp = claudeCodeService.getUserBalance(userId);
		return GatewayResponse.SUCCESS.newBuilder().toResult(resp);
	}

	/**
	 * 图表 + 明细联动（每小时聚合）
	 * - `start` (string, required): `YYYY-MM-DD HH:MM:SS`，例如 `2025-08-08 12:00:00`
	 * - `end` (string, required): `YYYY-MM-DD HH:MM:SS`，需大于 `start`
	 * - `tz` (string, optional): 时区，默认 `Asia/Shanghai`
	 * - `page` (int, optional): 明细页码，默认 1
	 * - `limit` (int, optional): 明细每页数量，默认 20，最大 100
	 * - `order` (string, optional): `asc|desc`，默认 `desc`
	 * - `type` (string, optional): 明细类型过滤，`consume|purchase|recovery|refund|reward|adjustment|all`，默认 `all`
	 */
	@GetMapping("/get/credits/analytics")
	public Result<ClaudeCodeResp> getCreditsAnalytics(String start, String end, @RequestParam(defaultValue = "Asia/Shanghai") String tz, @RequestParam(defaultValue = "1") Integer page, @RequestParam(defaultValue = "10") Integer limit, String order, String type) throws Exception {
		long userId = StpUserUtil.getLoginIdAsLong();
		ClaudeCodeResp resp = claudeCodeService.getCreditsAnalytics(userId, start, end, tz, page, limit, order, type);
		return GatewayResponse.SUCCESS.newBuilder().toResult(resp);
	}

	//================================================Claude Code OAuth接口============================================================


	/**
	 * OAuth认证验证方法
	 */
	private Long authenticateOAuth(HttpServletRequest request) {
		String authHeader = request.getHeader("Authorization");
		if (authHeader == null || !authHeader.startsWith("Bearer ")) {
			throw BusinessRuntimeException.getInstance("OAuth token required");
		}

		String tokenValue = authHeader.substring(7); // 移除"Bearer "前缀

		// 验证token
		OAuthToken token = oAuthClaudeCodeService.validateToken(null, tokenValue);
		if (token == null) {
			throw BusinessRuntimeException.getInstance("Invalid or expired token");
		}

		return token.getUserId();
	}

	/**
	 * OAuth授权端点
	 */
	@GetMapping("/authorize")
	public void authorize(@RequestParam String clientId,
						  @RequestParam String redirectUri,
						  @RequestParam String state,
						  HttpServletResponse response) throws IOException {

		try {
			// 验证参数
			if (clientId == null || clientId.isEmpty() ||
					redirectUri == null || redirectUri.isEmpty() ||
					state == null || state.isEmpty()) {
				response.sendError(400, "Missing required parameters");
				return;
			}

			// 验证客户端ID
			if (!isValidClientId(clientId)) {
				response.sendError(400, "Invalid client_id");
				return;
			}

			// 检查用户登录状态
			if (!StpUserUtil.isLogin()) {
				// 重定向到登录页面
				String loginUrl = "/login?client_id=" + clientId +
						"&redirect_uri=" + URLEncoder.encode(redirectUri, StandardCharsets.UTF_8) +
						"&state=" + state;
				response.sendRedirect(loginUrl);
				return;
			}

			// 用户已登录，生成token
			Long userId = StpUserUtil.getLoginIdAsLong();
			String token = oAuthClaudeCodeService.generateAccessToken(userId, clientId);

			// 重定向回客户端
			String callbackUrl = redirectUri + "?token=" + token + "&state=" + state;
			response.sendRedirect(callbackUrl);

			log.info("OAuth授权成功: userId={}, clientId={}, token={}", userId, clientId, token.substring(0, 8) + "...");

		} catch (Exception e) {
			log.error("OAuth授权失败", e);
			response.sendError(500, "Authorization failed");
		}
	}

	/**
	 * Token验证端点
	 */
	@PostMapping("/verify-token")
	public Result<Map<String, Object>> verifyToken(@RequestBody Map<String, String> request) {

		try {
			String token = request.get("token");
			String code = request.get("code");
			String clientId = request.get("client_id");
			String clientSecret = request.get("client_secret");

			// 验证客户端凭据
			OAuthClient client = oAuthClaudeCodeService.validateClient(clientId, clientSecret);
			if (client == null) {
				throw BusinessRuntimeException.getInstance("Invalid client credentials");
			}

			// 验证token
			OAuthToken oauthToken = oAuthClaudeCodeService.validateToken(code,token);
			if (oauthToken == null) {
				throw BusinessRuntimeException.getInstance("Invalid or expired token");
			}

			// 返回用户信息
			Map<String, Object> result = new HashMap<>();
			result.put("authenticated", true);
			result.put("userId", oauthToken.getUserId());
			result.put("token", oauthToken.getKeyValue());
			result.put("email", getUserEmail(oauthToken.getUserId()));

			log.info("Token验证成功: userId={}, clientId={}", oauthToken.getUserId(), clientId);

			return GatewayResponse.SUCCESS.newBuilder().toResult(result);

		} catch (Exception e) {
			log.error("Token验证失败", e);
			throw BusinessRuntimeException.getInstance("Token verification failed");
		}
	}

	/**
	 * 验证客户端ID是否有效
	 */
	private boolean isValidClientId(String clientId) {
		// 这里可以添加更严格的客户端ID验证逻辑
		return "vvxked850tk1ikvhpk07s47a2vnppa7t".equals(clientId);
	}

	/**
	 * 获取用户邮箱
	 */
	private String getUserEmail(Long userId) {
		// 这里需要根据实际的用户表结构来获取用户邮箱
		return "user" + userId + "@example.com";
	}

	/**
	 * 获取公告列表
	 */
	@GetMapping("/announcements")
	public Result<List<Announcement>> getAnnouncements(@RequestHeader(value = "Accept-Language", defaultValue = "zh-CN") String language) {
		try {
			// OAuth认证
			authenticateOAuth(request);

			// 处理语言参数
			if (language.startsWith("en")) {
				language = "en";
			} else {
				language = "zh-CN";
			}

			List<Announcement> announcements = announcementService.getActiveAnnouncements(language);
			return GatewayResponse.SUCCESS.newBuilder().toResult(announcements);
		} catch (Exception e) {
			throw BusinessRuntimeException.getInstance("Failed to fetch announcements");
		}
	}

	/**
	 * 获取中继服务器列表
	 */
	@GetMapping("/relays")
	public Result<List<RelayServer>> getRelays(@RequestParam(required = false) String domain) {
		try {
			// OAuth认证
			authenticateOAuth(request);

			List<RelayServer> relays = relayService.getAvailableRelays(domain);
			return GatewayResponse.SUCCESS.newBuilder().toResult(relays);
		} catch (Exception e) {
			throw BusinessRuntimeException.getInstance("Failed to fetch relay servers");
		}
	}

}