#ifndef __INCLUDED_STEAM_OVERLAY_H__
#define __INCLUDED_STEAM_OVERLAY_H__

#include "dll/base.h"
#include <map>
#include <queue>

static constexpr size_t max_chat_len = 768;

enum window_state
{
    window_state_none           = 0,
    window_state_show           = 1<<0,
    window_state_invite         = 1<<1,
    window_state_join           = 1<<2,
    window_state_lobby_invite   = 1<<3,
    window_state_rich_invite    = 1<<4,
    window_state_send_message   = 1<<5,
    window_state_need_attention = 1<<6,
};

struct friend_window_state
{
    int id;
    uint8 window_state;
    std::string window_title;
    union // The invitation (if any)
    {
        uint64 lobbyId;
        char connect[k_cchMaxRichPresenceValueLength];
    };
    std::string chat_history;
    char chat_input[max_chat_len];

    bool joinable;
};

struct Friend_Less
{
    bool operator()(const Friend& lhs, const Friend& rhs) const
    {
        return lhs.id() < rhs.id();
    }
};

enum notification_type
{
    notification_type_message = 0,
    notification_type_invite,
    notification_type_achievement,
    notification_type_auto_accept_invite,
};

struct Notification
{
    static constexpr float width_percent = 0.25f; // percentage from total width
    static constexpr float height = 5.0f;
    static constexpr std::chrono::milliseconds fade_in   = std::chrono::milliseconds(2000);
    static constexpr std::chrono::milliseconds fade_out  = std::chrono::milliseconds(2000);
    static constexpr std::chrono::milliseconds show_time = std::chrono::milliseconds(6000) + fade_in + fade_out;
    static constexpr std::chrono::milliseconds fade_out_start = show_time - fade_out;

    int id;
    uint8 type;
    std::chrono::seconds start_time;
    std::string message;
    std::pair<const Friend, friend_window_state>* frd;
    std::weak_ptr<uint64_t> icon;
};

struct Overlay_Achievement
{
    std::string name;
    std::string title;
    std::string description;
    std::string icon_name;
    std::string icon_gray_name;
    bool hidden;
    bool achieved;
    uint32 unlock_time;
    std::weak_ptr<uint64_t> icon;
    std::weak_ptr<uint64_t> icon_gray;

    constexpr const static int ICON_LOAD_MAX_TRIALS = 3;
    uint8_t icon_load_trials = ICON_LOAD_MAX_TRIALS;
    uint8_t icon_gray_load_trials = ICON_LOAD_MAX_TRIALS;
};

#ifdef EMU_OVERLAY
#include <future>
#include "InGameOverlay/RendererHook.h"

struct NotificationsIndexes {
    int top_left = 0, top_center = 0, top_right = 0;
    int bot_left = 0, bot_center = 0, bot_right = 0;
};

class Steam_Overlay
{
    Settings* settings;
    SteamCallResults* callback_results;
    SteamCallBacks* callbacks;
    RunEveryRunCB* run_every_runcb;
    Networking* network;

    // friend id, show client window (to chat and accept invite maybe)
    std::map<Friend, friend_window_state, Friend_Less> friends;

    // avoids spam loading on failure
    std::atomic<int32_t> load_achievements_trials = 3;
    bool setup_overlay_called;
    bool is_ready;
    bool show_overlay;
    ENotificationPosition notif_position;
    int h_inset, v_inset;
    std::string show_url;
    std::vector<Overlay_Achievement> achievements;
    bool show_achievements, show_settings;
    void *fonts_atlas;

    // disable input when force_*.txt file is used
    bool disable_user_input;
    // warn when force_*.txt file is used
    bool warn_forced_setting;
    // warn when using local save
    bool warn_local_save;
    // warn when app ID = 0
    bool warn_bad_appid;

    char username_text[256];
    std::atomic_bool save_settings;

    int current_language;

    std::string warning_message;

    // Callback infos
    std::queue<Friend> has_friend_action;
    std::vector<Notification> notifications;
    std::recursive_mutex notifications_mutex;
    std::atomic<bool> have_notifications;
    // used when the button "Invite all" is clicked
    std::atomic<bool> invite_all_friends_clicked = false;

    bool overlay_state_changed;

    std::recursive_mutex overlay_mutex;
    std::atomic<bool> i_have_lobby;
    std::future<InGameOverlay::RendererHook_t*> future_renderer;
    InGameOverlay::RendererHook_t* _renderer;

    Steam_Overlay(Steam_Overlay const&) = delete;
    Steam_Overlay(Steam_Overlay&&) = delete;
    Steam_Overlay& operator=(Steam_Overlay const&) = delete;
    Steam_Overlay& operator=(Steam_Overlay&&) = delete;

    static void steam_overlay_run_every_runcb(void* object);
    static void steam_overlay_callback(void* object, Common_Message* msg);

    void Callback(Common_Message* msg);
    void RunCallbacks();

    bool FriendJoinable(std::pair<const Friend, friend_window_state> &f);
    bool IHaveLobby();

    void NotifySoundUserInvite(friend_window_state& friend_state);
    void NotifySoundUserAchievement();
    void NotifySoundAutoAcceptFriendInvite();

    // Right click on friend
    void BuildContextMenu(Friend const& frd, friend_window_state &state);
    // Double click on friend
    void BuildFriendWindow(Friend const& frd, friend_window_state &state);
    // Notifications like achievements, chat and invitations
    void SetNextNotificationPos(float width, float height, float font_size, notification_type type, struct NotificationsIndexes &idx);
    void BuildNotifications(int width, int height);
    // invite a single friend
    void InviteFriend(uint64 friend_id, class Steam_Friends* steamFriends, class Steam_Matchmaking* steamMatchmaking);

public:
    Steam_Overlay(Settings* settings, SteamCallResults* callback_results, SteamCallBacks* callbacks, RunEveryRunCB* run_every_runcb, Networking *network);

    ~Steam_Overlay();

    bool Ready() const;

    bool NeedPresent() const;

    void SetNotificationPosition(ENotificationPosition eNotificationPosition);

    void SetNotificationInset(int nHorizontalInset, int nVerticalInset);
    void SetupOverlay();
    void UnSetupOverlay();

    void HookReady(bool ready);

    void CreateFonts();
    void LoadAudio();
    void OverlayProc();

    void OpenOverlayInvite(CSteamID lobbyId);
    void OpenOverlay(const char* pchDialog);
    void OpenOverlayWebpage(const char* pchURL);

    bool ShowOverlay() const;
    void ShowOverlay(bool state);
    bool OpenOverlayHook(bool toggle);

    void SetLobbyInvite(Friend friendId, uint64 lobbyId);
    void SetRichInvite(Friend friendId, const char* connect_str);

    void FriendConnect(Friend _friend);
    void FriendDisconnect(Friend _friend);

    void AddMessageNotification(std::string const& message);
    void AddAchievementNotification(nlohmann::json const& ach);
    void AddInviteNotification(std::pair<const Friend, friend_window_state> &wnd_state);
    void AddAutoAcceptInviteNotification();
};

#else

class Steam_Overlay
{
public:
    Steam_Overlay(Settings* settings, SteamCallResults* callback_results, SteamCallBacks* callbacks, RunEveryRunCB* run_every_runcb, Networking* network) {}
    ~Steam_Overlay() {}

    bool Ready() const { return false; }

    bool NeedPresent() const { return false; }

    void SetNotificationPosition(ENotificationPosition eNotificationPosition) {}

    void SetNotificationInset(int nHorizontalInset, int nVerticalInset) {}
    void SetupOverlay() {}
    void UnSetupOverlay() {}

    void HookReady(bool ready) {}

    void CreateFonts() {}
    void OverlayProc() {}

    void OpenOverlayInvite(CSteamID lobbyId) {}
    void OpenOverlay(const char* pchDialog) {}
    void OpenOverlayWebpage(const char* pchURL) {}

    bool ShowOverlay() const { return false; }
    void ShowOverlay(bool state) {}
    bool OpenOverlayHook(bool toggle) { return false; }

    void SetLobbyInvite(Friend friendId, uint64 lobbyId) {}
    void SetRichInvite(Friend friendId, const char* connect_str) {}

    void FriendConnect(Friend _friend) {}
    void FriendDisconnect(Friend _friend) {}

    void AddMessageNotification(std::string const& message) {}
    void AddAchievementNotification(nlohmann::json const& ach) {}
    void AddInviteNotification(std::pair<const Friend, friend_window_state> &wnd_state) {}
    void AddAutoAcceptInviteNotification() {}
};

#endif

#endif//__INCLUDED_STEAM_OVERLAY_H__