#pragma once

#include "config.h"
#include "posts.h"
#include "state.h"
#include "tg.h"
#include "vk.h"
#include <functional>
#include <vector>

namespace manager {
  namespace td_api = td::td_api;

  using posts::AbstractPost;

  class RepostManager {
  public:
    RepostManager(uv_loop_t *eventLoop, tg::AuthCodeProvider tgCodeProvider, tg::PasswordProvider tgPasswordProvider, state::AppState *appState, config::AppConfig *config);
    RepostManager(RepostManager&) = delete;
    void start();
  private:
    void on_clients_ready();

    void collect_all_vk_posts(std::function<void(std::vector<vk::Post>)> callback);
    void collect_all_tg_posts(std::function<void(std::vector<td::tl::unique_ptr<td_api::message>>)> callback);
    void collect_last_vk_posts(int count, std::function<void(std::vector<vk::Post>)> callback);
    void collect_last_tg_posts(int count, std::function<void(std::vector<td::tl::unique_ptr<td_api::message>>)> callback);
    void collect_vk_posts_from(int offset, int count, std::function<void(std::vector<vk::Post>)> callback);
    void collect_tg_posts_from(long from, int count, std::function<void(std::vector<td::tl::unique_ptr<td_api::message>>)> callback);

    void collect_vk_posts_from__intermediate(int offset, int count, std::shared_ptr<std::vector<vk::Post>> intermediateResult, std::function<void(std::vector<vk::Post>)> callback);
    void collect_tg_posts_from__intermediate(long from, int count, std::shared_ptr<std::vector<td::tl::unique_ptr<td_api::message>>> intermediateResult, std::function<void(std::vector<td::tl::unique_ptr<td_api::message>>)> callback);

    bool drop_posts_older_than(std::vector<AbstractPost> &posts, long lastPostId);
    
    std::vector<AbstractPost> to_abstract_posts(std::vector<vk::Post> &posts);
    std::vector<AbstractPost> to_abstract_posts(std::vector<td::tl::unique_ptr<td_api::message>> &posts);

    void repost_all(std::vector<AbstractPost> posts);

    state::AppState *m_appState;
    config::AppConfig *m_appConfig;
    vk::VKClient m_vk;
    tg::TelegramClient m_tg;
  };
}