using DXPBLL.Kyc;
using DXPDAL.Common;
using DXPSL.Common;
using FastEndpoints;
using GB5Shared.DTO.ECM;
using GB5Shared.DTO.Framework.Enum;
using GB5Shared.DTO.Framework.ResponseStandard;
using static GB5Shared.GB5Constant.Constant;

namespace DXPSL.Endpoints.Kyc;

// Multipart upload — ObjectTypeId is hardcoded to OBJECTDXPPARTYKYCPROFILE server-side (never
// client-supplied) so this endpoint can't be used to tag an attachment against an unrelated
// entity. ObjectId is typically 0 at this point (profile doesn't exist yet) — RowGuid is what
// KycBLL.SubmitAsync later resolves against via UAS's two-phase pattern (see KycBLL.cs).
public class UploadKycDocument : DXPBaseEndpoint<UploadKycDocument.UploadKycDocumentParameters, ResponseStandardDTO<object>>
{
    private readonly IKycBLL _bll;
    private readonly IDXPSystemContext _systemContext;

    public UploadKycDocument(IKycBLL bll, IDXPSystemContext systemContext)
    {
        _bll = bll;
        _systemContext = systemContext;
    }

    public record UploadKycDocumentParameters(
        [property: QueryParam] int    DocumentSetDetailId,
        [property: QueryParam] int    ObjectId,
        [property: QueryParam] Guid   RowGuid,
        [property: QueryParam] string? Remarks,
        [property: QueryParam] string? Tags
    );

    public override void Configure()
    {
        Post("/DXP/Kyc/UploadDocument");
        AllowFileUploads();
    }

    protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
        UploadKycDocumentParameters req, DXPCallerContext caller, CancellationToken ct)
    {
        var file = HttpContext.Request.Form.Files.FirstOrDefault();
        if (file is null || file.Length == 0)
            throw new ArgumentException("No file provided or file is empty.");

        await using var stream = file.OpenReadStream();

        var uploadRequest = new AttachmentUploadRequest
        {
            DocumentSetDetailId = req.DocumentSetDetailId,
            ObjectTypeId        = EntityConstant.OBJECTDXPPARTYKYCPROFILE,
            ObjectId            = req.ObjectId,
            RowGuid             = req.RowGuid,
            Remarks             = req.Remarks,
            Tags                = req.Tags ?? string.Empty
        };

        var result = await _bll.UploadDocumentAsync(
            uploadRequest, stream, file.FileName, file.ContentType,
            _systemContext.GetSystemLogin(caller.DxpUserId), ct);

        return new ResponseStandardDTO<object>
        {
            Status = FrameworkEnumDTO.ResponseStatus.Ok,
            Body   = result
        };
    }
}