package com.xuekairui.invite.controller;

import com.xuekairui.common.Result;
import com.xuekairui.invite.dto.*;
import com.xuekairui.invite.service.InviteService;
import jakarta.servlet.http.HttpServletRequest;
import lombok.RequiredArgsConstructor;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Map;

/**
 * 邀请接口（用户端）
 */
@RestController
@RequestMapping("/api/invite")
@RequiredArgsConstructor
public class InviteController {

    private final InviteService inviteService;

    /**
     * 获取我的邀请码 & 邀请链接
     * GET /api/invite/code
     */
    @GetMapping("/code")
    public Result<InviteCodeResponse> getMyInviteCode(HttpServletRequest request) {
        Long userId = (Long) request.getAttribute("userId");
        return Result.success(inviteService.getOrCreateInviteCode(userId));
    }

    /**
     * 获取邀请统计（邀请人数、注册人数、累计奖励、摘要文本等）
     * GET /api/invite/stats
     */
    @GetMapping("/stats")
    public Result<InviteStatsResponse> getInviteStats(HttpServletRequest request) {
        Long userId = (Long) request.getAttribute("userId");
        return Result.success(inviteService.getInviteStats(userId));
    }

    /**
     * 获取邀请记录列表（含注册状态）
     * GET /api/invite/rewards
     */
    @GetMapping("/rewards")
    public Result<List<InviteRewardResponse>> getInviteRewards(HttpServletRequest request) {
        Long userId = (Long) request.getAttribute("userId");
        return Result.success(inviteService.getInviteRewards(userId));
    }

    /**
     * 获取可用额外爬虫次数（邀请奖励 + 运营发放）
     * GET /api/invite/extra-quota
     */
    @GetMapping("/extra-quota")
    public Result<Integer> getExtraQuota(HttpServletRequest request) {
        Long userId = (Long) request.getAttribute("userId");
        return Result.success(inviteService.getAvailableExtraQuota(userId));
    }

    /**
     * 补填邀请码（注册时未填，注册后有效窗口内可补填）
     * 补填成功后：邀请人获赠1个月高级会员时长
     * POST /api/invite/bind
     * Body: {"inviteCode": "A3K7M9P2"} 或 {"inviteCode": "https://app.zhijiayun.com/invite/A3K7M9P2"}
     */
    @PostMapping("/bind")
    public Result<String> bindInviteCode(@RequestBody Map<String, String> body,
                                         HttpServletRequest request) {
        Long userId = (Long) request.getAttribute("userId");
        return Result.success(inviteService.bindInviteCode(userId, body.get("inviteCode")));
    }

    // ==========================================
    // 公开接口（无需登录，浏览器访问）
    // ==========================================

    /**
     * 邀请落地页数据（公开，无需登录）
     * 浏览器打开邀请链接时调用，展示邀请人信息和下载链接
     * 支持多渠道：windows、app、wechat、miniapp、dingtalk、feishu
     * GET /api/invite/page/{code}?channel=windows
     */
    @GetMapping("/page/{code}")
    public Result<InvitePageResponse> getInvitePage(
            @PathVariable String code,
            @RequestParam(required = false) String channel) {
        return Result.success(inviteService.getInvitePage(code, channel));
    }

    /**
     * 浏览器直接访问邀请链接入口（公开，无需登录）
     * 自动计入点击数，返回落地页数据
     * GET /invite/{code}              （默认 windows 渠道）
     * GET /invite/{code}?channel=wechat
     */
    @GetMapping("/{code}")
    public Result<InvitePageResponse> openInviteLink(
            @PathVariable String code,
            @RequestParam(required = false) String channel) {
        return Result.success(inviteService.getInvitePage(code, channel));
    }

    /**
     * 追踪邀请链接被打开（公开，无需登录）
     * POST /api/invite/click/{code}
     */
    @PostMapping("/click/{code}")
    public Result<Void> trackClick(@PathVariable String code) {
        inviteService.trackClick(code);
        return Result.success(null);
    }

    /**
     * 解析邀请链接或邀请码（公开，无需登录）
     * 适用于：用户只复制了一段文字/链接，前端需要识别出邀请人和邀请码
     * GET /api/invite/resolve-link?link=<a href="https://app.zhijiayun.com/invite/ABC123">...</a>
     */
    @GetMapping("/resolve-link")
    public Result<InviteLinkResolveResponse> resolveInviteLink(@RequestParam String link) {
        return Result.success(inviteService.resolveInviteLink(link));
    }
}