using Microsoft.Extensions.Options;
using YD_Event.Application.Unit.Dtos;
using YD_Event.Core.Options;

namespace YD_Event.Application.Unit;

/// <summary>
/// 单位管理（报名平台 / 打分系统账号）
/// </summary>
[ApiDescriptionSettings("打分系统")]
[Route("api/unitaccount")]
public class UnitAccountService : BaseService<SysUser>, ITransient
{
    private readonly ISqlSugarRepository<SysUser> _repository;
    private readonly ISqlSugarRepository<SysUserRole> _userRoleRepository;
    private readonly IIdGenerator _idGenerator;
    private readonly IEasyCachingProvider _easyCachingProvider;
    private readonly IOptionsMonitor<RoleOptions> _roleOptionsMonitor;

    public UnitAccountService(ISqlSugarRepository<SysUser> repository,
        ISqlSugarRepository<SysUserRole> userRoleRepository,
        IIdGenerator idGenerator,
        IEasyCachingProvider easyCachingProvider,
        IOptionsMonitor<RoleOptions> roleOptionsMonitor) : base(repository)
    {
        _repository = repository;
        _userRoleRepository = userRoleRepository;
        _idGenerator = idGenerator;
        _easyCachingProvider = easyCachingProvider;
        _roleOptionsMonitor = roleOptionsMonitor;
    }

    /// <summary>
    /// 单位账号分页查询
    /// </summary>
    [DisplayName("单位账号分页查询")]
    [HttpGet("page")]
    public async Task<PageResult<UnitAccountOutput>> Page([FromQuery] UnitAccountQueryInput input)
    {
        EnsureUnitPlatform(input.Platform);
        return await _repository.AsQueryable()
            .Where(x => x.UnitPlatform == input.Platform)
            .WhereIF(!string.IsNullOrWhiteSpace(input.UnitName), x => x.UnitName.Contains(input.UnitName))
            .WhereIF(!string.IsNullOrWhiteSpace(input.Account), x => x.Account.Contains(input.Account))
            .WhereIF(input.StartTime.HasValue, x => x.CreatedTime >= input.StartTime.Value.Date)
            // 结束日期按当天 23:59:59 处理，避免只传日期时漏掉当天的数据
            .WhereIF(input.EndTime.HasValue, x => x.CreatedTime < input.EndTime.Value.Date.AddDays(1))
            .OrderByDescending(x => x.CreatedTime)
            .Select(x => new UnitAccountOutput
            {
                Id = x.Id,
                UnitName = x.UnitName,
                ContactName = x.Name,
                Account = x.Account,
                Platform = x.UnitPlatform,
                Status = x.Status,
                CreatedTime = x.CreatedTime
            })
            .ToPagedListAsync(input);
    }

    /// <summary>
    /// 单位账号详情
    /// </summary>
    [DisplayName("单位账号详情")]
    [HttpGet("detail")]
    public async Task<UnitAccountOutput> Detail([FromQuery] long id)
    {
        var user = await GetUnitAccountAsync(id);

        return new UnitAccountOutput
        {
            Id = user.Id,
            UnitName = user.UnitName,
            ContactName = user.Name,
            Account = user.Account,
            Platform = user.UnitPlatform,
            Status = user.Status,
            CreatedTime = user.CreatedTime
        };
    }

    /// <summary>
    /// 添加单位账号
    /// </summary>
    [DisplayName("添加单位账号")]
    [HttpPost("add")]
    [UnitOfWork]
    public async Task Add(AddUnitAccountInput input)
    {
        EnsureUnitPlatform(input.Platform);
        // 规范化文本输入，避免首尾空格导致账号查重与登录不一致
        input.Account = input.Account.Trim();
        input.UnitName = input.UnitName.Trim();
        input.ContactName = input.ContactName.Trim();
        // 账号是全局登录标识，需在整张 SysUser 表内查重
        if (await _repository.IsAnyAsync(x => x.Account == input.Account))
        {
            throw Oops.Bah($"账号 {input.Account} 已存在");
        }

        var user = new SysUser
        {
            Id = _idGenerator.NextId(),
            Account = input.Account,
            Name = input.ContactName,
            UnitName = input.UnitName,
            UnitPlatform = input.Platform,
            Gender = Gender.Unknown,
            OrgId = 0,
            Status = AvailabilityStatus.Enable,
            DeleteMark = false,
            CreatedTime = DateTime.Now
        };
        // 加密盐依赖主键，必须在 Id 生成之后计算
        user.Password = MD5Encryption.Encrypt($"{_idGenerator.Encode(user.Id)}{input.Password}");

        await _repository.InsertAsync(user);

        await _userRoleRepository.InsertAsync(new SysUserRole
        {
            Id = _idGenerator.NextId(),
            UserId = user.Id,
            RoleId = GetRoleId(input.Platform),
            CreatedTime = DateTime.Now,
            DeleteMark = false
        });

        await ClearCache();
    }

    /// <summary>
    /// 更新单位账号
    /// </summary>
    [DisplayName("更新单位账号")]
    [HttpPut("edit")]
    [UnitOfWork]
    public async Task Update(UpdateUnitAccountInput input)
    {
        var user = await GetUnitAccountAsync(input.Id);
        // 规范化文本输入，避免首尾空格导致账号查重与登录不一致
        input.Account = input.Account.Trim();
        input.UnitName = input.UnitName.Trim();
        input.ContactName = input.ContactName.Trim();

        if (await _repository.IsAnyAsync(x => x.Account == input.Account && x.Id != input.Id))
        {
            throw Oops.Bah($"账号 {input.Account} 已被使用");
        }

        user.Account = input.Account;
        user.Name = input.ContactName;
        user.UnitName = input.UnitName;

        await _repository.UpdateAsync(user);
        await ClearCache();
    }

    /// <summary>
    /// 重置单位账号密码
    /// </summary>
    [DisplayName("重置单位账号密码")]
    [HttpPost("resetPassword")]
    public async Task ResetPassword(ResetUnitAccountPasswordInput input)
    {
        await GetUnitAccountAsync(input.Id);

        string password = MD5Encryption.Encrypt($"{_idGenerator.Encode(input.Id)}{input.Password}");
        await _repository.UpdateAsync(x => new SysUser
        {
            Password = password
        }, x => x.Id == input.Id);
    }

    /// <summary>
    /// 启用/禁用单位账号（禁用后禁止登录）
    /// </summary>
    [DisplayName("启用禁用单位账号")]
    [HttpPost("setStatus")]
    public override async Task SetStatus(AvailabilityDto dto)
    {
        await GetUnitAccountAsync(dto.Id);
        await base.SetStatus(dto);
    }

    /// <summary>
    /// 删除单位账号
    /// </summary>
    [DisplayName("删除单位账号")]
    [HttpDelete("delete")]
    [UnitOfWork]
    public override async Task Delete(KeyDto dto)
    {
        await GetUnitAccountAsync(dto.Id);
        await base.Delete(dto);
        await _userRoleRepository.SoftDeleteAsync(x => x.UserId == dto.Id);
    }

    /// <summary>
    /// 取单位账号，拦截对普通系统用户的越权操作
    /// </summary>
    private async Task<SysUser> GetUnitAccountAsync(long id)
    {
        var user = await _repository.GetByIdAsync(id);
        if (user == null) throw Oops.Bah("单位账号不存在");
        if (user.UnitPlatform == UnitAccountPlatform.EventSystem) throw Oops.Bah("该账号不是单位账号，请在系统用户中管理");
        return user;
    }

    private static void EnsureUnitPlatform(UnitAccountPlatform platform)
    {
        if (platform is not UnitAccountPlatform.Registration and not UnitAccountPlatform.Scoring)
            throw Oops.Bah("所属平台只能选择报名平台或打分系统");
    }

    /// <summary>
    /// 平台对应的角色
    /// </summary>
    private long GetRoleId(UnitAccountPlatform platform)
    {
        var options = _roleOptionsMonitor.CurrentValue;
        return platform == UnitAccountPlatform.Scoring
            ? options.ScoringUnitRoleId
            : options.UnitUserRoleId;
    }

    internal override Task ClearCache()
    {
        return _easyCachingProvider.RemoveByPrefixAsync(CacheConst.PermissionKey);
    }
}