using MediatR;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using TakeoutSaaS.Application.App.Merchants.Commands;
using TakeoutSaaS.Application.App.Merchants.Dto;
using TakeoutSaaS.Application.App.Merchants.Queries;
using TakeoutSaaS.Domain.Merchants.Enums;
using TakeoutSaaS.Module.Authorization.Attributes;
using TakeoutSaaS.Shared.Abstractions.Constants;
using TakeoutSaaS.Shared.Abstractions.Results;
using TakeoutSaaS.Shared.Web.Api;

namespace TakeoutSaaS.AdminApi.Controllers;

/// <summary>
/// 商户管理。
/// </summary>
[ApiVersion("1.0")]
[Authorize]
[Route("api/admin/v{version:apiVersion}/merchants")]
public sealed class MerchantsController : BaseApiController
{
    private readonly IMediator _mediator;

    /// <summary>
    /// 初始化控制器。
    /// </summary>
    public MerchantsController(IMediator mediator)
    {
        _mediator = mediator;
    }

    /// <summary>
    /// 创建商户。
    /// </summary>
    [HttpPost]
    [PermissionAuthorize("merchant:create")]
    [ProducesResponseType(typeof(ApiResponse<MerchantDto>), StatusCodes.Status200OK)]
    public async Task<ApiResponse<MerchantDto>> Create([FromBody] CreateMerchantCommand command, CancellationToken cancellationToken)
    {
        var result = await _mediator.Send(command, cancellationToken);
        return ApiResponse<MerchantDto>.Ok(result);
    }

    /// <summary>
    /// 查询商户列表。
    /// </summary>
    [HttpGet]
    [PermissionAuthorize("merchant:read")]
    [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<MerchantDto>>), StatusCodes.Status200OK)]
    public async Task<ApiResponse<IReadOnlyList<MerchantDto>>> List([FromQuery] MerchantStatus? status, CancellationToken cancellationToken)
    {
        var result = await _mediator.Send(new SearchMerchantsQuery { Status = status }, cancellationToken);
        return ApiResponse<IReadOnlyList<MerchantDto>>.Ok(result);
    }

    /// <summary>
    /// 获取商户详情。
    /// </summary>
    [HttpGet("{merchantId:long}")]
    [PermissionAuthorize("merchant:read")]
    [ProducesResponseType(typeof(ApiResponse<MerchantDto>), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
    public async Task<ApiResponse<MerchantDto>> Detail(long merchantId, CancellationToken cancellationToken)
    {
        var result = await _mediator.Send(new GetMerchantByIdQuery { MerchantId = merchantId }, cancellationToken);
        return result == null
            ? ApiResponse<MerchantDto>.Error(ErrorCodes.NotFound, "商户不存在")
            : ApiResponse<MerchantDto>.Ok(result);
    }
}