using FastEndpoints;
using Microsoft.EntityFrameworkCore;
using Socialize.Api.Data;
using Socialize.Api.Infrastructure.BlobStorage.Contracts;
using Socialize.Api.Modules.Organizations.Data;
using Socialize.Api.Modules.Organizations.Services;

namespace Socialize.Api.Modules.Organizations.Handlers;

public record ChangeOrganizationLogoRequest(
    IFormFile File);

public record ChangeOrganizationLogoResponse(
    string BlobUrl);

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

public class ChangeOrganizationLogoHandler(
    AppDbContext dbContext,
    IBlobStorage blobStorage,
    OrganizationAccessService organizationAccessService)
    : Endpoint<ChangeOrganizationLogoRequest, ChangeOrganizationLogoResponse>
{
    public override void Configure()
    {
        Post("/api/organizations/{organizationId:guid}/logo");
        Options(o => o.WithTags("Organizations"));
        AllowFileUploads();
    }

    public override async Task HandleAsync(ChangeOrganizationLogoRequest request, CancellationToken ct)
    {
        ArgumentNullException.ThrowIfNull(request);

        Guid organizationId = Route<Guid>("organizationId");

        Organization? organization = await dbContext.Organizations
            .SingleOrDefaultAsync(candidate => candidate.Id == organizationId, ct);
        if (organization is null)
        {
            await SendNotFoundAsync(ct);
            return;
        }

        if (!await organizationAccessService.HasOrganizationPermissionAsync(
                User,
                organizationId,
                OrganizationPermissions.ManageOrganizationSettings,
                ct))
        {
            await SendForbiddenAsync(ct);
            return;
        }

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

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

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