using FastEndpoints;
using Microsoft.EntityFrameworkCore;
using Socialize.Api.Data;
using Socialize.Api.Infrastructure.BlobStorage.Contracts;
using Socialize.Api.Infrastructure.Security;
using Socialize.Api.Modules.Workspaces.Data;

namespace Socialize.Api.Modules.Workspaces.Handlers;

public record ChangeWorkspaceLogoRequest(
    IFormFile File);

public record ChangeWorkspaceLogoResponse(
    string BlobUrl);

public sealed class ChangeWorkspaceLogoRequestValidator : Validator<ChangeWorkspaceLogoRequest>
{
    public ChangeWorkspaceLogoRequestValidator()
    {
        RuleFor(x => x.File)
            .NotNull()
            .NotEmpty();
    }
}

public class ChangeWorkspaceLogoHandler(
    AppDbContext dbContext,
    IBlobStorage blobStorage,
    AccessScopeService accessScopeService)
    : Endpoint<ChangeWorkspaceLogoRequest, ChangeWorkspaceLogoResponse>
{
    public override void Configure()
    {
        Post("/api/workspaces/{id}/logo");
        Options(o => o.WithTags("Workspaces"));
        AllowFileUploads();
    }

    public override async Task HandleAsync(ChangeWorkspaceLogoRequest request, CancellationToken ct)
    {
        Guid id = Route<Guid>("id");

        Workspace? workspace = await dbContext.Workspaces.SingleOrDefaultAsync(candidate => candidate.Id == id, ct);
        if (workspace is null)
        {
            await SendNotFoundAsync(ct);
            return;
        }

        if (!await accessScopeService.CanManageWorkspaceAsync(User, workspace.Id, ct))
        {
            await SendForbiddenAsync(ct);
            return;
        }

        string blobUrl = await blobStorage.UploadFileAsync(
            ContainerNames.Workspaces,
            $"{workspace.Id}/{SubDirectoryNames.Profile}/{CommonFileNames.LogoPicture}",
            request.File.OpenReadStream(),
            request.File.ContentType,
            ct);

        workspace.LogoUrl = blobUrl;
        await dbContext.SaveChangesAsync(ct);

        await SendOkAsync(new ChangeWorkspaceLogoResponse(blobUrl), ct);
    }
}