using BotPages.Core.Abstractions;
using BotPages.Core.Context;
using BotPages.Core.Messaging;

namespace BotPages.Core;

/// <summary>
/// Контекст страницы, объединяющий пользователя, чат, состояние и адаптер.
/// </summary>
public sealed class PageContext
{
    /// <summary>Ключ сессии.</summary>
    public required CompositeSessionKey SessionKey { get; init; }

    /// <summary>Данные обновления.</summary>
    public required UpdateContext Update { get; init; }

    /// <summary>Хранилище состояния.</summary>
    public required IStateStorage StateStorage { get; init; }
    /// <summary>Сервис навигации.</summary>
    public required NavigationService Navigation { get; init; }
    /// <summary>Адаптер мессенджера.</summary>
    public required IMessengerAdapter Adapter { get; init; }

    //Storage

    /// <summary>Получить состояние по ключу.</summary>
    public Task<T?> GetStorageAsync<T>(string key, CancellationToken ct)
        => StateStorage.GetAsync<T>(SessionKey, key, ct);

    /// <summary>Сохранить состояние по ключу.</summary>
    public Task SetStorageAsync<T>(string key, T state, CancellationToken ct)
        => StateStorage.SetAsync<T>(SessionKey, key, state, ct);

    /// <summary>Удалить состояние по ключу.</summary>
    public Task<bool> RemoveStorageAsync(string key, CancellationToken ct)
        => StateStorage.RemoveAsync(SessionKey, key, ct);

    /// <summary>Удалить все состояния по ключу.</summary>
    public Task<bool> ClearStorageAsync(CancellationToken ct)
        => StateStorage.ClearAsync(SessionKey, ct);

    //Adapter

    /// <summary>
    /// Отправить текстовое сообщение.
    /// </summary>
    public Task SendTextAsync(string text, MessageFormat format = MessageFormat.Plain,
        IEnumerable<IEnumerable<InlineButton>>? inline = null,
        IEnumerable<IEnumerable<ReplyButton>>? reply = null,
        CancellationToken ct = default)
        => Adapter.SendTextAsync(this.Update.Chat.Id, text, format, inline, reply, ct);

    /// <summary>
    /// Отправить файл.
    /// </summary>
    public Task SendFileAsync(FileDescriptor file, string? caption = null, CancellationToken ct = default)
        => Adapter.SendFileAsync(this.Update.Chat.Id, file, caption, ct);

    /// <summary>
    /// Получить билдер альбомов.
    /// </summary>
    public IAlbumBuilder Albums => Adapter.CreateAlbumBuilder(this);

    /// <summary>
    /// Начать прогресс операции.
    /// </summary>
    public async Task<string?> StartProgressAsync(string title, CancellationToken ct)
    {
        var messageId = await Adapter.StartProgressAsync(this, title, ct);

        if (messageId != null)
        {
            _progressMessageId = messageId;
            _progressTitle = title;
        }

        return messageId;
    }

    /// <summary>
    /// Обновить прогресс операции.
    /// </summary>
    public Task UpdateProgressAsync(int percent, CancellationToken ct)
    {
        if (_progressMessageId != null)
        {
            return Adapter.UpdateProgressAsync(this, _progressMessageId, _progressTitle ?? "", percent, ct);
        }
        else
        {
            return Task.CompletedTask;
        }
    }

    /// <summary>
    /// Обновить прогресс операции.
    /// </summary>
    public Task UpdateProgressAsync(string messageId, int percent, CancellationToken ct)
    {
        return Adapter.UpdateProgressAsync(this, messageId, _progressTitle ?? "", percent, ct);
    }


    private string? _progressMessageId = null;
    private string? _progressTitle = null;

}