#nullable enable
using Bit.Core.Auth.Entities;
using Bit.Core.Context;
using Bit.Core.Enums;
using Bit.Core.Models;
using Bit.Core.NotificationCenter.Entities;
using Bit.Core.Settings;
using Bit.Core.Tools.Entities;
using Bit.Core.Vault.Entities;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;

namespace Bit.Core.Services;

/// <summary>
/// Sends non-mobile push notifications to the Azure Queue Api, later received by Notifications Api.
/// Used by Cloud-Hosted environments.
/// Received by AzureQueueHostedService message receiver in Notifications project.
/// </summary>
public class NotificationsApiPushNotificationService : BaseIdentityClientService, IPushNotificationService
{
    private readonly IGlobalSettings _globalSettings;
    private readonly IHttpContextAccessor _httpContextAccessor;

    public NotificationsApiPushNotificationService(
        IHttpClientFactory httpFactory,
        GlobalSettings globalSettings,
        IHttpContextAccessor httpContextAccessor,
        ILogger<NotificationsApiPushNotificationService> logger)
        : base(
            httpFactory,
            globalSettings.BaseServiceUri.InternalNotifications,
            globalSettings.BaseServiceUri.InternalIdentity,
            "internal",
            $"internal.{globalSettings.ProjectName}",
            globalSettings.InternalIdentityKey,
            logger)
    {
        _globalSettings = globalSettings;
        _httpContextAccessor = httpContextAccessor;
    }

    public async Task PushSyncCipherCreateAsync(Cipher cipher, IEnumerable<Guid> collectionIds)
    {
        await PushCipherAsync(cipher, PushType.SyncCipherCreate, collectionIds);
    }

    public async Task PushSyncCipherUpdateAsync(Cipher cipher, IEnumerable<Guid> collectionIds)
    {
        await PushCipherAsync(cipher, PushType.SyncCipherUpdate, collectionIds);
    }

    public async Task PushSyncCipherDeleteAsync(Cipher cipher)
    {
        await PushCipherAsync(cipher, PushType.SyncLoginDelete, null);
    }

    private async Task PushCipherAsync(Cipher cipher, PushType type, IEnumerable<Guid>? collectionIds)
    {
        if (cipher.OrganizationId.HasValue)
        {
            var message = new SyncCipherPushNotification
            {
                Id = cipher.Id,
                OrganizationId = cipher.OrganizationId,
                RevisionDate = cipher.RevisionDate,
                CollectionIds = collectionIds,
            };

            await SendMessageAsync(type, message, true);
        }
        else if (cipher.UserId.HasValue)
        {
            var message = new SyncCipherPushNotification
            {
                Id = cipher.Id,
                UserId = cipher.UserId,
                RevisionDate = cipher.RevisionDate,
                CollectionIds = collectionIds,
            };

            await SendMessageAsync(type, message, true);
        }
    }

    public async Task PushSyncFolderCreateAsync(Folder folder)
    {
        await PushFolderAsync(folder, PushType.SyncFolderCreate);
    }

    public async Task PushSyncFolderUpdateAsync(Folder folder)
    {
        await PushFolderAsync(folder, PushType.SyncFolderUpdate);
    }

    public async Task PushSyncFolderDeleteAsync(Folder folder)
    {
        await PushFolderAsync(folder, PushType.SyncFolderDelete);
    }

    private async Task PushFolderAsync(Folder folder, PushType type)
    {
        var message = new SyncFolderPushNotification
        {
            Id = folder.Id,
            UserId = folder.UserId,
            RevisionDate = folder.RevisionDate
        };

        await SendMessageAsync(type, message, true);
    }

    public async Task PushSyncCiphersAsync(Guid userId)
    {
        await PushUserAsync(userId, PushType.SyncCiphers);
    }

    public async Task PushSyncVaultAsync(Guid userId)
    {
        await PushUserAsync(userId, PushType.SyncVault);
    }

    public async Task PushSyncOrganizationsAsync(Guid userId)
    {
        await PushUserAsync(userId, PushType.SyncOrganizations);
    }

    public async Task PushSyncOrgKeysAsync(Guid userId)
    {
        await PushUserAsync(userId, PushType.SyncOrgKeys);
    }

    public async Task PushSyncSettingsAsync(Guid userId)
    {
        await PushUserAsync(userId, PushType.SyncSettings);
    }

    public async Task PushLogOutAsync(Guid userId, bool excludeCurrentContext)
    {
        await PushUserAsync(userId, PushType.LogOut, excludeCurrentContext);
    }

    private async Task PushUserAsync(Guid userId, PushType type, bool excludeCurrentContext = false)
    {
        var message = new UserPushNotification { UserId = userId, Date = DateTime.UtcNow };

        await SendMessageAsync(type, message, excludeCurrentContext);
    }

    public async Task PushAuthRequestAsync(AuthRequest authRequest)
    {
        await PushAuthRequestAsync(authRequest, PushType.AuthRequest);
    }

    public async Task PushAuthRequestResponseAsync(AuthRequest authRequest)
    {
        await PushAuthRequestAsync(authRequest, PushType.AuthRequestResponse);
    }

    private async Task PushAuthRequestAsync(AuthRequest authRequest, PushType type)
    {
        var message = new AuthRequestPushNotification { Id = authRequest.Id, UserId = authRequest.UserId };

        await SendMessageAsync(type, message, true);
    }

    public async Task PushSyncSendCreateAsync(Send send)
    {
        await PushSendAsync(send, PushType.SyncSendCreate);
    }

    public async Task PushSyncSendUpdateAsync(Send send)
    {
        await PushSendAsync(send, PushType.SyncSendUpdate);
    }

    public async Task PushSyncSendDeleteAsync(Send send)
    {
        await PushSendAsync(send, PushType.SyncSendDelete);
    }

    public async Task PushSyncNotificationCreateAsync(Notification notification)
    {
        var message = new SyncNotificationPushNotification
        {
            Id = notification.Id,
            UserId = notification.UserId,
            OrganizationId = notification.OrganizationId,
            InstallationId = notification.Global ? _globalSettings.Installation.Id : null,
            ClientType = notification.ClientType,
            RevisionDate = notification.RevisionDate
        };

        await SendMessageAsync(PushType.SyncNotificationCreate, message, true);
    }

    public async Task PushSyncNotificationUpdateAsync(Notification notification, NotificationStatus? notificationStatus)
    {
        var message = new SyncNotificationPushNotification
        {
            Id = notification.Id,
            UserId = notification.UserId,
            OrganizationId = notification.OrganizationId,
            InstallationId = notification.Global ? _globalSettings.Installation.Id : null,
            ClientType = notification.ClientType,
            RevisionDate = notification.RevisionDate,
            ReadDate = notificationStatus?.ReadDate,
            DeletedDate = notificationStatus?.DeletedDate
        };

        await SendMessageAsync(PushType.SyncNotificationUpdate, message, true);
    }

    private async Task PushSendAsync(Send send, PushType type)
    {
        if (send.UserId.HasValue)
        {
            var message = new SyncSendPushNotification
            {
                Id = send.Id,
                UserId = send.UserId.Value,
                RevisionDate = send.RevisionDate
            };

            await SendMessageAsync(type, message, false);
        }
    }

    private async Task SendMessageAsync<T>(PushType type, T payload, bool excludeCurrentContext)
    {
        var contextId = GetContextIdentifier(excludeCurrentContext);
        var request = new PushNotificationData<T>(type, payload, contextId);
        await SendAsync(HttpMethod.Post, "send", request);
    }

    private string? GetContextIdentifier(bool excludeCurrentContext)
    {
        if (!excludeCurrentContext)
        {
            return null;
        }

        var currentContext =
            _httpContextAccessor.HttpContext?.RequestServices.GetService(typeof(ICurrentContext)) as ICurrentContext;
        return currentContext?.DeviceIdentifier;
    }

    public Task SendPayloadToInstallationAsync(string installationId, PushType type, object payload, string? identifier,
        string? deviceId = null, ClientType? clientType = null) =>
        // Noop
        Task.CompletedTask;

    public Task SendPayloadToUserAsync(string userId, PushType type, object payload, string? identifier,
        string? deviceId = null, ClientType? clientType = null)
    {
        // Noop
        return Task.FromResult(0);
    }

    public Task SendPayloadToOrganizationAsync(string orgId, PushType type, object payload, string? identifier,
        string? deviceId = null, ClientType? clientType = null)
    {
        // Noop
        return Task.FromResult(0);
    }
}