ANTOOZA-BACKEND/Application/Features/Api/Developers/Apps/GetApp/Handler.cs

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

namespace Application.Features.Api.Developers.Apps.GetApp;

internal sealed class Handler(IAppDbContext db) : IQueryHandler<Query, Result<Response>>
{
    public async Task<Result<Response>> Handle(Query request, CancellationToken ct)
    {
        var app = await db.ApiApplication
            .Where(c => c.ID == request.AppID && c.OwnerMemberID == request.OwnerMemberID)
            .FirstOrDefaultAsync(ct);

        if (app is null)
        {
            return Result.Failure<Response>(Error.NotFound("App.NotFound", "App not found."));
        }

        var scopes = await db.ApiApplicationScope
            .Where(c => c.ApplicationID == app.ID)
            .Select(c => c.Scope)
            .ToListAsync(ct);

        var credentials = await db.ApiCredential
            .Where(c => c.ApplicationID == app.ID)
            .OrderByDescending(c => c.CreatedAt)
            .Select(c => new CredentialInfo(c.ClientID, c.SecretHint, c.Status, c.CreatedAt, c.LastUsedAt))
            .ToListAsync(ct);

        return Result.Success(new Response(
            app.ID, app.Name, app.Description, app.HomepageUrl, app.LogoPath, app.Status,
            scopes, credentials, app.CreatedAt
        ));
    }
}