using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using XiangYi.Application.DTOs.Requests;
using XiangYi.Application.DTOs.Responses;
using XiangYi.Application.Interfaces;
using XiangYi.Core.Constants;
using System.Security.Claims;

namespace XiangYi.AppApi.Controllers;

/// <summary>
/// 会员控制器
/// </summary>
[ApiController]
[Route("api/app/member")]
[Authorize]
public class MemberController : ControllerBase
{
    private readonly IMemberService _memberService;
    private readonly ISystemConfigService _systemConfigService;
    private readonly ILogger<MemberController> _logger;

    public MemberController(IMemberService memberService, ISystemConfigService systemConfigService, ILogger<MemberController> logger)
    {
        _memberService = memberService;
        _systemConfigService = systemConfigService;
        _logger = logger;
    }

    /// <summary>
    /// 获取会员信息（未登录时只返回等级配置）
    /// </summary>
    /// <returns>会员信息</returns>
    [HttpGet("info")]
    [AllowAnonymous]
    public async Task<ApiResponse<MemberInfoResponse>> GetMemberInfo()
    {
        var userId = GetCurrentUserId();
        if (userId <= 0)
        {
            // 未登录：只返回会员等级配置和默认选中等级
            var tiers = await _memberService.GetMemberTiersAsync();
            var defaultTierLevel = await GetDefaultTierLevelAsync();
            return ApiResponse<MemberInfoResponse>.Success(new MemberInfoResponse { Tiers = tiers, DefaultTierLevel = defaultTierLevel });
        }
        var result = await _memberService.GetMemberInfoAsync(userId);
        return ApiResponse<MemberInfoResponse>.Success(result);
    }

    /// <summary>
    /// 购买会员
    /// </summary>
    /// <param name="request">购买请求</param>
    /// <returns>订单信息和支付参数</returns>
    [HttpPost("purchase")]
    public async Task<ApiResponse<MemberPurchaseResponse>> Purchase([FromBody] MemberPurchaseRequest request)
    {
        if (request.MemberLevel < 1 || request.MemberLevel > 4)
        {
            return ApiResponse<MemberPurchaseResponse>.Error(ErrorCodes.InvalidParameter, "会员等级无效");
        }

        var userId = GetCurrentUserId();
        var result = await _memberService.CreatePurchaseOrderAsync(userId, request);
        return ApiResponse<MemberPurchaseResponse>.Success(result);
    }

    /// <summary>
    /// 绑定家庭成员
    /// </summary>
    /// <param name="request">绑定请求</param>
    /// <returns>绑定结果</returns>
    [HttpPost("bindFamily")]
    public async Task<ApiResponse<FamilyBindResponse>> BindFamily([FromBody] FamilyBindRequest request)
    {
        if (request.BindUserId <= 0)
        {
            return ApiResponse<FamilyBindResponse>.Error(ErrorCodes.InvalidParameter, "绑定用户ID无效");
        }

        var userId = GetCurrentUserId();
        
        if (userId == request.BindUserId)
        {
            return ApiResponse<FamilyBindResponse>.Error(ErrorCodes.InvalidParameter, "不能绑定自己");
        }

        var result = await _memberService.BindFamilyMemberAsync(userId, request);
        return ApiResponse<FamilyBindResponse>.Success(result);
    }

    /// <summary>
    /// 通过相亲编号绑定家庭成员
    /// </summary>
    /// <param name="request">绑定请求（包含相亲编号）</param>
    /// <returns>绑定结果</returns>
    [HttpPost("bindFamilyByXiangQinNo")]
    public async Task<ApiResponse<FamilyBindResponse>> BindFamilyByXiangQinNo([FromBody] FamilyBindByXiangQinNoRequest request)
    {
        if (string.IsNullOrWhiteSpace(request.XiangQinNo))
        {
            return ApiResponse<FamilyBindResponse>.Error(ErrorCodes.InvalidParameter, "请输入相亲编号");
        }

        var userId = GetCurrentUserId();
        var result = await _memberService.BindFamilyMemberByXiangQinNoAsync(userId, request);
        return ApiResponse<FamilyBindResponse>.Success(result);
    }

    /// <summary>
    /// 获取家庭成员列表
    /// </summary>
    /// <returns>家庭成员列表</returns>
    [HttpGet("familyMembers")]
    public async Task<ApiResponse<List<FamilyMemberDto>>> GetFamilyMembers()
    {
        var userId = GetCurrentUserId();
        var result = await _memberService.GetFamilyMembersAsync(userId);
        return ApiResponse<List<FamilyMemberDto>>.Success(result);
    }

    /// <summary>
    /// 解绑家庭成员
    /// </summary>
    /// <param name="bindUserId">被绑定用户ID</param>
    /// <returns>解绑结果</returns>
    [HttpDelete("familyMembers/{bindUserId}")]
    public async Task<ApiResponse> UnbindFamilyMember(long bindUserId)
    {
        if (bindUserId <= 0)
        {
            return ApiResponse.Error(ErrorCodes.InvalidParameter, "绑定用户ID无效");
        }

        var userId = GetCurrentUserId();
        var success = await _memberService.UnbindFamilyMemberAsync(userId, bindUserId);
        
        if (!success)
        {
            return ApiResponse.Error(ErrorCodes.InvalidParameter, "解绑失败，该用户未绑定");
        }
        
        return ApiResponse.Success("解绑成功");
    }

    /// <summary>
    /// 获取当前用户ID
    /// </summary>
    private long GetCurrentUserId()
    {
        var userIdClaim = User.FindFirst(ClaimTypes.NameIdentifier)?.Value;
        return long.TryParse(userIdClaim, out var userId) ? userId : 0;
    }

    /// <summary>
    /// 获取默认选中会员等级
    /// </summary>
    private async Task<int?> GetDefaultTierLevelAsync()
    {
        var value = await _systemConfigService.GetConfigValueAsync(
            XiangYi.Application.Services.SystemConfigService.DefaultMemberTierLevelKey);
        return int.TryParse(value, out var level) ? level : null;
    }
}