/*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 *
 * This file is part of PortaPack.
 *
 * 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, 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; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef __UI_DEBUG_H__
#define __UI_DEBUG_H__

#include "ui.hpp"
#include "ui_widget.hpp"
#include "ui_painter.hpp"
#include "ui_menu.hpp"
#include "ui_navigation.hpp"

#include "rffc507x.hpp"
#include "max2837.hpp"
#include "portapack.hpp"

#include <functional>
#include <utility>

namespace ui {

class DebugMemoryView : public View {
public:
	DebugMemoryView(NavigationView& nav);

	void focus() override;

	std::string title() const override { return "Memory"; };

private:
	Text text_title {
		{ 96, 96, 48, 16 },
		"Memory",
	};

	Text text_label_m0_core_free {
		{ 0, 128, 144, 16 },
		"M0 Core Free Bytes",
	};

	Text text_label_m0_core_free_value {
		{ 200, 128, 40, 16 },
	};

	Text text_label_m0_heap_fragmented_free {
		{ 0, 144, 184, 16 },
		"M0 Heap Fragmented Free",
	};

	Text text_label_m0_heap_fragmented_free_value {
		{ 200, 144, 40, 16 },
	};

	Text text_label_m0_heap_fragments {
		{ 0, 160, 136, 16 },
		"M0 Heap Fragments",
	};

	Text text_label_m0_heap_fragments_value {
		{ 200, 160, 40, 16 },
	};

	Button button_done {
		{ 72, 192, 96, 24 },
		"Done"
	};
};

class TemperatureWidget : public Widget {
public:
	explicit TemperatureWidget(
		Rect parent_rect
	) : Widget { parent_rect }
	{
	}

	void paint(Painter& painter) override;

private:
	using sample_t = uint32_t;
	using temperature_t = int32_t;

	temperature_t temperature(const sample_t sensor_value) const;
	Coord screen_y(const temperature_t temperature, const Rect& screen_rect) const;

	std::string temperature_str(const temperature_t temperature) const;

	static constexpr temperature_t display_temp_min = -10;  //Accomodate negative values, present in cold startup cases
	static constexpr temperature_t display_temp_scale = 3;
	static constexpr int bar_width = 1;
	static constexpr int temp_len = 4; //Now scale shows up to 4 chars ("-10C")
};

class TemperatureView : public View {
public:
	explicit TemperatureView(NavigationView& nav);

	void focus() override;

	std::string title() const override { return "Temperature"; };

private:
	Text text_title {
		{ 76, 16, 240, 16 },
		"Temperature",
	};

	TemperatureWidget temperature_widget {
		{ 0, 40, 240, 180 },
	};

	Button button_done {
		{ 72, 264, 96, 24 },
		"Done"
	};
};

struct RegistersWidgetConfig {
	size_t registers_count;
	size_t register_bits;

	constexpr size_t legend_length() const {
		return (registers_count >= 0x10) ? 2 : 1;
	}

	constexpr size_t legend_width() const {
		return legend_length() * 8;
	}

	constexpr size_t value_length() const {
		return (register_bits + 3) / 4;
	}

	constexpr size_t value_width() const {
		return value_length() * 8;
	}

	constexpr size_t registers_per_row() const {
		return (value_length() >= 3) ? 4 : 8;
	}

	constexpr size_t registers_row_length() const {
		return (registers_per_row() * (value_length() + 1)) - 1;
	}

	constexpr size_t registers_row_width() const {
		return registers_row_length() * 8;
	}

	constexpr size_t row_width() const {
		return legend_width() + 8 + registers_row_width();
	}

	constexpr size_t rows() const {
		return registers_count / registers_per_row();
	}
};

class RegistersWidget : public Widget {
public:
	RegistersWidget(
		RegistersWidgetConfig&& config,
		std::function<uint32_t(const size_t register_number)>&& reader
	);

	void update();

	void paint(Painter& painter) override;

private:
	const RegistersWidgetConfig config;
	const std::function<uint32_t(const size_t register_number)> reader;

	static constexpr size_t row_height = 16;

	void draw_legend(const Coord left, Painter& painter);
	void draw_values(const Coord left, Painter& painter);
};

class RegistersView : public View {
public:
	RegistersView(
		NavigationView& nav,
		const std::string& title,
		RegistersWidgetConfig&& config,
		std::function<uint32_t(const size_t register_number)>&& reader
	);

	void focus();

private:
	Text text_title { };

	RegistersWidget registers_widget;

	Button button_update {
		{ 16, 256, 96, 24 },
		"Update"
	};

	Button button_done {
		{ 128, 256, 96, 24 },
		"Done"
	};
};

class ControlsSwitchesWidget : public Widget {
public:
	ControlsSwitchesWidget(
		Rect parent_rect
	) : Widget { parent_rect },
		key_event_mask(0)
	{
		set_focusable(true);
	}

	void on_show() override;
	bool on_key(const KeyEvent key) override;

	void paint(Painter& painter) override;

private:
	uint8_t key_event_mask;

	MessageHandlerRegistration message_handler_frame_sync {
		Message::ID::DisplayFrameSync,
		[this](const Message* const) {
			this->on_frame_sync();
		}
	};

	void on_frame_sync();
};

class DebugControlsView : public View {
public:
	explicit DebugControlsView(NavigationView& nav);

	void focus() override;

	std::string title() const override { return "Buttons Test"; };

private:
	Text text_title {
		{ 64, 16, 184, 16 },
		"Controls State",
	};

	ControlsSwitchesWidget switches_widget {
		{ 80, 80, 80, 112 },
	};

	Button button_done {
		{ 72, 264, 96, 24 },
		"Done"
	};
};

/*class DebugLCRView : public View {
public:
	DebugLCRView(NavigationView& nav, std::string lcrstring);

	void focus() override;
	
	std::string title() const override { return "LCR debug"; };

private:
	Console console {
		{ 8, 16, 224, 240 }
	};
	
	Button button_exit {
		{ 72, 264, 96, 32 },
		"Exit"
	};
};*/

class DebugPeripheralsMenuView : public BtnGridView {
public:
	DebugPeripheralsMenuView(NavigationView& nav);
	std::string title() const override { return "Peripherals"; };	
};

class DebugMenuView : public BtnGridView {
public:
	DebugMenuView(NavigationView& nav);
	std::string title() const override { return "Debug"; };	
};

} /* namespace ui */

#endif/*__UI_DEBUG_H__*/