/******************************************************************************
    Copyright (C) 2013-2014 by Hugh Bailey <obs.jim@gmail.com>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/

#pragma once

#include <obs.hpp>
#include <unordered_map>
#include <vector>
#include <memory>
#include "window-main.hpp"
#include "window-basic-properties.hpp"

#include <util/util.hpp>

#include <QPointer>

class QListWidgetItem;
class VolControl;

#include "ui_OBSBasic.h"

#define DESKTOP_AUDIO_1 Str("DesktopAudioDevice1")
#define DESKTOP_AUDIO_2 Str("DesktopAudioDevice2")
#define AUX_AUDIO_1     Str("AuxAudioDevice1")
#define AUX_AUDIO_2     Str("AuxAudioDevice2")
#define AUX_AUDIO_3     Str("AuxAudioDevice3")

class OBSBasic : public OBSMainWindow {
	Q_OBJECT

private:
	std::unordered_map<obs_source_t, int> sourceSceneRefs;

	std::vector<VolControl*> volumes;

	QPointer<OBSBasicProperties> properties;

	obs_output_t  streamOutput;
	obs_service_t service;
	obs_encoder_t aac;
	obs_encoder_t x264;

	bool          sceneChanging;

	int           previewX,  previewY;
	float         previewScale;
	int           resizeTimer;

	ConfigFile    basicConfig;

	void          CreateDefaultScene();

	void          ClearVolumeControls();

	void          Save(const char *file);
	void          Load(const char *file);

	void          SaveService();
	bool          LoadService();

	bool          InitOutputs();
	bool          InitEncoders();
	bool          InitService();

	bool          InitBasicConfigDefaults();
	bool          InitBasicConfig();

	void          InitOBSCallbacks();

	OBSScene      GetCurrentScene();
	OBSSceneItem  GetCurrentSceneItem();

	void GetFPSCommon(uint32_t &num, uint32_t &den) const;
	void GetFPSInteger(uint32_t &num, uint32_t &den) const;
	void GetFPSFraction(uint32_t &num, uint32_t &den) const;
	void GetFPSNanoseconds(uint32_t &num, uint32_t &den) const;
	void GetConfigFPS(uint32_t &num, uint32_t &den) const;

	void UpdateSources(OBSScene scene);
	void InsertSceneItem(obs_sceneitem_t item);

	void TempFileOutput(const char *path, int vBitrate, int aBitrate);
	void TempStreamOutput(const char *url, const char *key,
			int vBitrate, int aBitrate);

public slots:
	void StreamingStart();
	void StreamingStop(int errorcode);

private slots:
	void AddSceneItem(OBSSceneItem item);
	void RemoveSceneItem(OBSSceneItem item);
	void AddScene(OBSSource source);
	void RemoveScene(OBSSource source);
	void UpdateSceneSelection(OBSSource source);

	void MoveSceneItem(OBSSceneItem item, order_movement movement);

	void ActivateAudioSource(OBSSource source);
	void DeactivateAudioSource(OBSSource source);

private:
	/* OBS Callbacks */
	static void SceneItemAdded(void *data, calldata_t params);
	static void SceneItemRemoved(void *data, calldata_t params);
	static void SourceAdded(void *data, calldata_t params);
	static void SourceRemoved(void *data, calldata_t params);
	static void SourceActivated(void *data, calldata_t params);
	static void SourceDeactivated(void *data, calldata_t params);
	static void ChannelChanged(void *data, calldata_t params);
	static void RenderMain(void *data, uint32_t cx, uint32_t cy);

	static void SceneItemMoveUp(void *data, calldata_t params);
	static void SceneItemMoveDown(void *data, calldata_t params);
	static void SceneItemMoveTop(void *data, calldata_t params);
	static void SceneItemMoveBottom(void *data, calldata_t params);

	void ResizePreview(uint32_t cx, uint32_t cy);

	void AddSource(const char *id);
	void AddSourcePopupMenu(const QPoint &pos);

public:
	obs_service_t GetService();
	void          SetService(obs_service_t service);

	bool ResetVideo();
	bool ResetAudio();

	void ResetAudioDevice(const char *sourceId, const char *deviceName,
			const char *deviceDesc, int channel);
	void ResetAudioDevices();

	void NewProject();
	void SaveProject();
	void LoadProject();

protected:
	virtual void closeEvent(QCloseEvent *event) override;
	virtual void changeEvent(QEvent *event) override;
	virtual void resizeEvent(QResizeEvent *event) override;
	virtual void timerEvent(QTimerEvent *event) override;

private slots:
	void on_action_New_triggered();
	void on_action_Open_triggered();
	void on_action_Save_triggered();
	void on_action_Settings_triggered();
	void on_scenes_currentItemChanged(QListWidgetItem *current,
			QListWidgetItem *prev);
	void on_scenes_customContextMenuRequested(const QPoint &pos);
	void on_actionAddScene_triggered();
	void on_actionRemoveScene_triggered();
	void on_actionSceneProperties_triggered();
	void on_actionSceneUp_triggered();
	void on_actionSceneDown_triggered();
	void on_sources_currentItemChanged(QListWidgetItem *current,
			QListWidgetItem *prev);
	void on_sources_customContextMenuRequested(const QPoint &pos);
	void on_actionAddSource_triggered();
	void on_actionRemoveSource_triggered();
	void on_actionSourceProperties_triggered();
	void on_actionSourceUp_triggered();
	void on_actionSourceDown_triggered();
	void on_streamButton_clicked();
	void on_settingsButton_clicked();

public:
	explicit OBSBasic(QWidget *parent = 0);
	virtual ~OBSBasic();

	virtual void OBSInit() override;

	virtual config_t Config() const override;

private:
	std::unique_ptr<Ui::OBSBasic> ui;
};