using Application.Abstractions.Data;
using Application.Abstractions.Messaging;
using SharedKernel.Results;
using Microsoft.EntityFrameworkCore;

namespace Application.Features.Api.Crew.GenerateInviteCode;

internal sealed class Handler(IAppDbContext db) : ICommandHandler<Command, Result<Response>>
{
    public async Task<Result<Response>> Handle(Command request, CancellationToken ct)
    {
        var crew = await db.Crew
            .FirstOrDefaultAsync(c => c.ID == request.CrewID, ct);

        if (crew is null)
        {
            return Result.Failure<Response>(Error.NotFound("Crew.NotFound", "크루를 찾을 수 없습니다."));
        }

        var code = crew.GenerateInviteCode();
        await db.SaveChangesAsync(ct);

        return Result.Success(new Response(code));
    }
}