// Copyright (c) 2010, Amar Takhar
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//   * Neither the name of the Aegisub Group nor the names of its contributors
//     may be used to endorse or promote products derived from this software
//     without specific prior written permission.
//
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// Aegisub Project http://www.aegisub.org/
//
// $Id$

/// @file recent.cpp
/// @brief recent/ commands, rebuild MRU-based lists.
/// @ingroup command
///

#include "../config.h"

#ifndef AGI_PRE
#include <sstream>

#include <wx/event.h>
#include <wx/msgdlg.h>
#endif

#include "command.h"

#include "../include/aegisub/context.h"
#include "../audio_controller.h"
#include "../main.h"
#include "../frame_main.h"
#include "../compat.h"
#include "../video_context.h"

namespace {
	using cmd::Command;
/// @defgroup cmd-recent MRU (Most Recently Used) commands.
/// @{

COMMAND_GROUP(recent_audio, "recent/audio", "Recent", "Recent", "Open recent audio.");
COMMAND_GROUP(recent_keyframes, "recent/keyframe", "Recent", "Recent", "Open recent keyframes.");
COMMAND_GROUP(recent_subtitle, "recent/subtitle", "Recent", "Recent", "Open recent subtitles.");
COMMAND_GROUP(recent_timecodes, "recent/timecodes", "Recent", "Recent", "Open recent timecodes.");
COMMAND_GROUP(recent_video, "recent/video", "Recent", "Recent", "Open recent video.");

struct recent_audio_entry : public Command {
	CMD_NAME("recent/audio/")
	STR_MENU("Recent")
	STR_DISP("Recent")
	STR_HELP("Open recent audio")

	void operator()(agi::Context *c, int id) {
		try {
			c->audioController->OpenAudio(lagi_wxString(config::mru->GetEntry("Audio", id)));
		}
		catch (agi::UserCancelException const&) { }
		catch (agi::Exception const& e) {
			wxMessageBox(lagi_wxString(e.GetChainedMessage()), "Error loading file", wxICON_ERROR | wxOK);
		}
	}
};

struct recent_keyframes_entry : public Command {
	CMD_NAME("recent/keyframes/")
	STR_MENU("Recent")
	STR_DISP("Recent")
	STR_HELP("Open recent keyframes")

	void operator()(agi::Context *c, int id) {
		c->videoController->LoadKeyframes(lagi_wxString(config::mru->GetEntry("Keyframes", id)));
	}
};

struct recent_subtitle_entry : public Command {
	CMD_NAME("recent/subtitle/")
	STR_MENU("Recent")
	STR_DISP("Recent")
	STR_HELP("Open recent subtitles")

	void operator()(agi::Context *c, int id) {
		wxGetApp().frame->LoadSubtitles(lagi_wxString(config::mru->GetEntry("Subtitle", id)));
	}
};

struct recent_timecodes_entry : public Command {
	CMD_NAME("recent/timecodes/")
	STR_MENU("Recent")
	STR_DISP("Recent")
	STR_HELP("Open recent timecodes")

	void operator()(agi::Context *c, int id) {
		c->videoController->LoadTimecodes(lagi_wxString(config::mru->GetEntry("Timecodes", id)));
	}
};

struct recent_video_entry : public Command {
	CMD_NAME("recent/video/")
	STR_MENU("Recent")
	STR_DISP("Recent")
	STR_HELP("Open recent videos")

	void operator()(agi::Context *c, int id) {
		c->videoController->SetVideo(lagi_wxString(config::mru->GetEntry("Video", id)));
	}
};

/// @class mru_wrapper
/// @brief Wrapper class for mru commands to 
template<class T>
class mru_wrapper : public T {
	int id;
	std::string full_name;
public:
	const char *name() const { return full_name.c_str(); }
	void operator()(agi::Context *c) {
		T::operator()(c, id);
	}
	mru_wrapper(int id) : id(id) {
		std::stringstream ss;
		ss << T::name();
		ss << id;
		full_name = ss.str();
	}
};
}
/// @}

namespace cmd {
	void init_recent() {
		reg(new recent_audio);
		reg(new recent_keyframes);
		reg(new recent_subtitle);
		reg(new recent_timecodes);
		reg(new recent_video);

		/// @todo 16 is an implementation detail that maybe needs to be exposed
		for (int i = 0; i < 16; ++i) {
			reg(new mru_wrapper<recent_audio_entry>(i));
			reg(new mru_wrapper<recent_keyframes_entry>(i));
			reg(new mru_wrapper<recent_subtitle_entry>(i));
			reg(new mru_wrapper<recent_timecodes_entry>(i));
			reg(new mru_wrapper<recent_video_entry>(i));
		}
	}
}