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

namespace Socialize.Api.Modules.Organizations.Handlers;

public record UpdateOrganizationRequest(
    string Name);

public class UpdateOrganizationRequestValidator
    : Validator<UpdateOrganizationRequest>
{
    public UpdateOrganizationRequestValidator()
    {
        RuleFor(x => x.Name).NotEmpty().MaximumLength(256);
    }
}

public class UpdateOrganizationHandler(
    AppDbContext dbContext,
    OrganizationAccessService organizationAccessService)
    : Endpoint<UpdateOrganizationRequest, OrganizationDto>
{
    public override void Configure()
    {
        Put("/api/organizations/{organizationId:guid}");
        Options(o => o.WithTags("Organizations"));
    }

    public override async Task HandleAsync(UpdateOrganizationRequest 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;
        }

        organization.Name = request.Name.Trim();
        await dbContext.SaveChangesAsync(ct);

        IReadOnlyCollection<string> currentUserPermissions = await organizationAccessService.GetUserOrganizationPermissionsAsync(
            User,
            organizationId,
            ct);

        await SendOkAsync(OrganizationDto.FromOrganization(organization, currentUserPermissions), ct);
    }
}