using Deal.Contracts.Integrations.Abstractions;
using Deal.Contracts.Integrations.Models;

namespace Deal.Infrastructure.Integrations.Services;

/// <summary>
/// Локальная заглушка <see cref="ITelegramGateway"/> без telegram-service.
/// </summary>
public sealed class LocalTelegramGateway : ITelegramGateway
{
    // Фаза idle-формы (аккаунт не подключён — сервиса нет).
    private const string IdlePhase = "idle";

    /// <inheritdoc />
    public Task<TelegramAccountStatusDto> StatusAsync(CancellationToken ct)
    {
        return Task.FromResult(new TelegramAccountStatusDto(IdlePhase, false, false, string.Empty, null, null));
    }

    /// <inheritdoc />
    public Task<TelegramAuthResultDto> StartPhoneAsync(
        string phone,
        int apiId,
        string apiHash,
        CancellationToken ct)
        => Task.FromResult(new TelegramAuthResultDto(IdlePhase, null));

    /// <inheritdoc />
    public Task<TelegramAuthResultDto> StartQrAsync(
        int apiId,
        string apiHash,
        CancellationToken ct)
        => Task.FromResult(new TelegramAuthResultDto(IdlePhase, null));

    /// <inheritdoc />
    public Task<string> SendCodeAsync(string code, CancellationToken ct) => Task.FromResult(IdlePhase);

    /// <inheritdoc />
    public Task<string> SendPasswordAsync(string password, CancellationToken ct) => Task.FromResult(IdlePhase);

    /// <inheritdoc />
    public Task LogoutAsync(CancellationToken ct) => Task.CompletedTask;

    /// <inheritdoc />
    public Task<IReadOnlyList<TelegramDialogEntryDto>> RefreshDialogsAsync(CancellationToken ct)
        => Task.FromResult<IReadOnlyList<TelegramDialogEntryDto>>([]);

    /// <inheritdoc />
    public Task SetMonitorAsync(
        string dialogId,
        bool enabled,
        CancellationToken ct) => Task.CompletedTask;

    /// <inheritdoc />
    public Task SetMonitorAllAsync(bool enabled, CancellationToken ct) => Task.CompletedTask;

    /// <inheritdoc />
    public Task<int> BackfillAsync(
        string dialogId,
        bool force,
        CancellationToken ct) => Task.FromResult(0);

    /// <inheritdoc />
    public Task<IReadOnlyList<TelegramRecentMessageDto>> ReadRecentAsync(
        string dialogId,
        int limit,
        CancellationToken ct)
        => Task.FromResult<IReadOnlyList<TelegramRecentMessageDto>>([]);

    /// <inheritdoc />
    public Task<TelegramSourceContentDto> ReadSourceAsync(
        string dialogId,
        long msgId,
        CancellationToken ct)
        => Task.FromResult(new TelegramSourceContentDto(false, null, null));

    /// <inheritdoc />
    public Task<IReadOnlyList<TelegramDialogEntryDto>> SearchAsync(
        string query,
        int limit,
        CancellationToken ct)
        => Task.FromResult<IReadOnlyList<TelegramDialogEntryDto>>([]);

    /// <inheritdoc />
    public Task<TelegramChannelInfoDto> InfoAsync(string dialogId, CancellationToken ct)
        => Task.FromResult(new TelegramChannelInfoDto(dialogId, string.Empty, string.Empty, string.Empty, SourceDefaults.DefaultHue, null, false));

    /// <inheritdoc />
    public Task<TelegramEvalReadDto> ReadForEvalAsync(
        string dialogId,
        int limit,
        CancellationToken ct)
        => Task.FromResult(new TelegramEvalReadDto(false, "no_history", []));

    /// <inheritdoc />
    public Task JoinAsync(string username, CancellationToken ct) => Task.CompletedTask;

    /// <inheritdoc />
    public Task LeaveAsync(string dialogId, CancellationToken ct) => Task.CompletedTask;
}