using System;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Sozsoft.Platform.Entities;
using Sozsoft.Platform.Identity;
using Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations;
using Volo.Abp.Data;
using Volo.Abp.DependencyInjection;
using Volo.Abp.Domain.Repositories;
using Volo.Abp.Identity;
using Volo.Abp.Users;

namespace Sozsoft.Platform.Extensions;

public class PlatformApplicationConfigurationContributor : IApplicationConfigurationContributor, ITransientDependency
{
    public async Task ContributeAsync(ApplicationConfigurationContributorContext context)
    {
        var hostEnvironment = context.ServiceProvider.GetRequiredService<IHostEnvironment>();
        context.ApplicationConfiguration.SetProperty("environment", hostEnvironment.EnvironmentName);

        var configuration = context.ServiceProvider.GetRequiredService<IConfiguration>();
        context.ApplicationConfiguration.SetProperty("apiVersion", configuration.GetValue<string>("App:Version"));

        // Uygulamanın çalışan sürümü: istemcinin tek sürüm kaynağı (ayrı bir
        // version.json isteği yoktur). Yalnızca EN SON sürüm taşınır; tam liste
        // ChangeLog ekranının kendi endpoint'inden (/api/app/change-log) gelir,
        // aksi halde her config isteğinde bütün changelog gönderilirdi.
        var changeLogRepository = context.ServiceProvider.GetRequiredService<IRepository<ChangeLog, Guid>>();
        var changeLogs = await changeLogRepository.GetListAsync(x => x.IsPublished);

        var latest = changeLogs
            .OrderByDescending(note => note.ReleaseDate)
            .ThenByDescending(note => note.Version)
            .FirstOrDefault();

        context.ApplicationConfiguration.SetProperty("changeLogs", new
        {
            uiVersion = latest?.Version,
            tags = latest?.GetChangeLog() ?? []
        });

        // GetListAsync boş liste döner, null dönmez — bu yüzden null kontrolü yok.
        // Veritabanı erişilemezse çağrı exception atar; bu durum istek boru hattında,
        // buraya gelinmeden 503 ile karşılanır (bkz. PlatformHttpApiHostModule).
        var routeRepository = context.ServiceProvider.GetRequiredService<IRepository<Route, Guid>>();
        context.ApplicationConfiguration.SetProperty("routes", await routeRepository.GetListAsync());

        var customComponentRepository = context.ServiceProvider.GetRequiredService<IRepository<CustomComponent, Guid>>();
        context.ApplicationConfiguration.SetProperty(
            "customComponents", await customComponentRepository.GetListAsync());

        // Public site menusu: ziyaretci menu ucunu cagiramaz ([Authorize]), bu yuzden
        // rotalar ve custom component'ler gibi anonim erisilen konfigurasyonla tasinir.
        var menuRepository = context.ServiceProvider.GetRequiredService<IRepository<Menu, Guid>>();
        var publicMenus = await menuRepository.GetListAsync(
            menu => menu.ModuleId == PlatformConsts.PublicSite.ModuleId && !menu.IsDisabled);

        context.ApplicationConfiguration.SetProperty("publicMenus", publicMenus
            .OrderBy(menu => menu.Order)
            .Select(menu => new
            {
                code = menu.Code,
                displayName = menu.DisplayName,
                url = menu.Url,
                icon = menu.Icon,
                order = menu.Order,
                parentCode = menu.ParentCode,
                cssClass = menu.CssClass,
                target = menu.Target,
                requiredPermissionName = menu.RequiredPermissionName
            })
            .ToList());

        var currentUser = context.ServiceProvider.GetRequiredService<ICurrentUser>();
        if (currentUser.Id.HasValue)
        {
            var sessionRepository = context.ServiceProvider.GetRequiredService<IIdentitySessionRepository>();
            var sessions = await sessionRepository.GetListAsync(userId: currentUser.Id.Value);
            var claimSessionId = currentUser.FindClaim(PlatformClaimTypes.SessionId.Key)?.Value;
            var sessionId = sessions.Exists(session => session.SessionId == claimSessionId)
                ? claimSessionId
                : sessions.OrderByDescending(session => session.SignedIn).FirstOrDefault()?.SessionId;

            context.ApplicationConfiguration.CurrentUser.SessionId = sessionId;
            context.ApplicationConfiguration.SetProperty("currentUserSessionId", sessionId);
        }
    }

}