using FastEndpoints;
using MediatR;
using Microsoft.AspNetCore.Mvc;
using Fengling.Member.Application.Commands.Points;

namespace Fengling.Member.Web.Endpoints.v1;

public class AddPointsEndpoint : Endpoint<AddPointsRequest, AddPointsResponse>
{
    private readonly IMediator _mediator;

    public AddPointsEndpoint(IMediator mediator)
    {
        _mediator = mediator;
    }

    public override void Configure()
    {
        Post("/api/v1/members/{MemberId}/points");
        Summary(s =>
        {
            s.Summary = "增加积分";
            s.Description = "为会员增加积分";
        });
    }

    public override async Task HandleAsync(AddPointsRequest req, CancellationToken ct)
    {
        var command = new AddPointsCommand
        {
            MemberId = req.MemberId,
            Points = req.Points,
            TransactionType = req.TransactionType,
            SourceId = req.SourceId,
            Remark = req.Remark
        };

        var result = await _mediator.Send(command, ct);

        Response = new AddPointsResponse
        {
            AccountId = result.AccountId,
            MemberId = result.MemberId,
            AddedPoints = result.AddedPoints,
            TotalPoints = result.TotalPoints,
            TransactionAt = result.TransactionAt
        };
    }
}

public class AddPointsRequest
{
    [FromRoute]
    public long MemberId { get; set; }
    public int Points { get; set; }
    public string TransactionType { get; set; } = string.Empty;
    public string SourceId { get; set; } = string.Empty;
    public string? Remark { get; set; }
}

public class AddPointsResponse
{
    public long AccountId { get; set; }
    public long MemberId { get; set; }
    public int AddedPoints { get; set; }
    public int TotalPoints { get; set; }
    public DateTime TransactionAt { get; set; }
}