-- Copyright (c) 2024 - Ognjen 'xolatile' Milan Robovic
--
-- GNU General Public Licence (version 3 or later)

pragma ada_2012;

--~with core, ui, effect, attribute, skill, resource, faction, might, magic, equipment, unit, construction, chad, deity, world, ai;
with core, ui, effect, attribute, skill, resource, faction, deity, material, magic, equipment, unit, construction, chad, world;

with ada.strings.unbounded;
use  ada.strings.unbounded;

use type core.point;
use type core.signal_code;
use type core.cursor_code;

procedure main is

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	side_panel      : integer := 0;
	preview_width   : integer := 0;
	preview_height  : integer := 0;
	text_box_height : integer := 0;

	player : chad.value := (
		index      => chad.ada,
		state      => core.idle,
		x          => 0,
		y          => 0,
		health     => (30, 40),
		mana       => (20, 30),
		stamina    => (10, 20),
		attributes => attribute.default,
		skills     => skill.default,
		resources  => ((101, 240), (103, 240), (107, 240), (109, 240), (113, 240), (127, 240)),
		equipments => (equipment.chest     => equipment.elven_armour,
		               equipment.head      => equipment.elven_helmet,
		               equipment.hands     => equipment.leather_gauntlets,
		               equipment.feet      => equipment.leather_greaves,
		               equipment.main_hand => equipment.jade_sword,
		               others              => equipment.none),
		item_count => 0,
		items      => (others => equipment.none)
	);

                                             ------------------------------------------------------------------------------------------

	type view is (
		map_preview_panel,      status_preview_panel,   text_box_panel
	);

	view_icon : array (view) of core.sprite := (others => (others => 0));
	view_list : array (view) of boolean     := (others => true);

	view_text : array (view) of core.long_string := (
		"Toggle map preview panel.                                               ",
		"Toggle status preview panel.                                            ",
		"Toggle text box panel.                                                  "
	);

	procedure swap_map_preview_panel    is begin view_list (map_preview_panel)    := not view_list (map_preview_panel);    end swap_map_preview_panel;
	procedure swap_status_preview_panel is begin view_list (status_preview_panel) := not view_list (status_preview_panel); end swap_status_preview_panel;
	procedure swap_text_box_panel       is begin view_list (text_box_panel)       := not view_list (text_box_panel);       end swap_text_box_panel;

	view_show : array (view) of access procedure := (
		swap_map_preview_panel'access,
		swap_status_preview_panel'access,
		swap_text_box_panel'access
	);

	game_title   :                        core.sprite;
	game_preview : array (world.biome) of core.sprite;

	switch : natural     := 0;
	choose : world.biome := world.grass;

                                             ------------------------------------------------------------------------------------------

	procedure check_move_camera_up is
	begin
		core.decrement (world.map.chads (1).y);
		world.map.chads (1).y := core.clip (world.map.chads (1).y, 0, world.map.height - 1);
		if world.map.clips (world.map.chads (1).x, world.map.chads (1).y) then
			core.increment (world.map.chads (1).y);
		end if;
	end check_move_camera_up;

	procedure check_move_camera_down is
	begin
		core.increment (world.map.chads (1).y);
		world.map.chads (1).y := core.clip (world.map.chads (1).y, 0, world.map.height - 1);
		if world.map.clips (world.map.chads (1).x, world.map.chads (1).y) then
			core.decrement (world.map.chads (1).y);
		end if;
	end check_move_camera_down;

	procedure check_move_camera_left is
	begin
		core.decrement (world.map.chads (1).x);
		world.map.chads (1).x := core.clip (world.map.chads (1).x, 0, world.map.width  - 1);
		if world.map.clips (world.map.chads (1).x, world.map.chads (1).y) then
			core.increment (world.map.chads (1).x);
		end if;
	end check_move_camera_left;

	procedure check_move_camera_right is
	begin
		core.increment (world.map.chads (1).x);
		world.map.chads (1).x := core.clip (world.map.chads (1).x, 0, world.map.width  - 1);
		if world.map.clips (world.map.chads (1).x, world.map.chads (1).y) then
			core.decrement (world.map.chads (1).x);
		end if;
	end check_move_camera_right;

	procedure ui_main_style is
	begin
		ui.active := ui.style'val ((ui.style'pos (ui.active) + 1) mod ui.style_count);
	end ui_main_style;

	procedure zoom_in  is begin core.zoom := 2; end zoom_in;
	procedure zoom_out is begin core.zoom := 1; end zoom_out;

	signal_list : constant array (core.signal_code) of access procedure := (
		core.signal_up          => check_move_camera_up'access,
		core.signal_down        => check_move_camera_down'access,
		core.signal_left        => check_move_camera_left'access,
		core.signal_right       => check_move_camera_right'access,
		core.signal_v           => ui_main_style'access,
		core.signal_kp_add      => zoom_in'access,
		core.signal_kp_subtract => zoom_out'access,
		core.signal_f1          => world.resource_cheat_1'access,
		core.signal_f2          => world.resource_cheat_2'access,
		core.signal_f3          => world.resource_cheat_3'access,
		core.signal_f4          => world.resource_cheat_4'access,
		core.signal_f5          => world.resource_cheat_5'access,
		core.signal_f6          => world.resource_cheat_6'access,
		core.signal_f7          => world.reveal_map'access,
		core.signal_f           => core.toggle_fullscreen'access,
		others                  => core.idle_skip'access
	);

                                             ------------------------------------------------------------------------------------------

	procedure main_menu is
	begin
		core.draw (game_preview (world.ash), core.center_x (game_preview (world.ash).width * 2), core.center_y (game_preview (world.ash).height * 2), factor => 2);
		core.draw (game_title,               core.center_x (game_title.width               * 2), core.center_y (game_title.height               * 2), factor => 2);
		--
		ui.write ("Main Menu", 0, 0);
		--
		ui.draw_check_box (0, 32, view_list (map_preview_panel),    "map_preview_panel");
		ui.draw_check_box (0, 64, view_list (status_preview_panel), "status_preview_panel");
		ui.draw_check_box (0, 96, view_list (text_box_panel),       "text_box_panel");
	end main_menu;

	view_source_code : natural := 25;

	source_code : array (0 .. 35) of unbounded_string := (
		to_unbounded_string (core.folder & "/source/ai.adb"),
		to_unbounded_string (core.folder & "/source/ai.ads"),
		to_unbounded_string (core.folder & "/source/attribute.adb"),
		to_unbounded_string (core.folder & "/source/attribute.ads"),
		to_unbounded_string (core.folder & "/source/chad.adb"),
		to_unbounded_string (core.folder & "/source/chad.ads"),
		to_unbounded_string (core.folder & "/source/construction.adb"),
		to_unbounded_string (core.folder & "/source/construction.ads"),
		to_unbounded_string (core.folder & "/source/core.adb"),
		to_unbounded_string (core.folder & "/source/core.ads"),
		to_unbounded_string (core.folder & "/source/deity.adb"),
		to_unbounded_string (core.folder & "/source/deity.ads"),
		to_unbounded_string (core.folder & "/source/effect.adb"),
		to_unbounded_string (core.folder & "/source/effect.ads"),
		to_unbounded_string (core.folder & "/source/equipment.adb"),
		to_unbounded_string (core.folder & "/source/equipment.ads"),
		to_unbounded_string (core.folder & "/source/faction.adb"),
		to_unbounded_string (core.folder & "/source/faction.ads"),
		to_unbounded_string (core.folder & "/source/magic.adb"),
		to_unbounded_string (core.folder & "/source/magic.ads"),
		to_unbounded_string (core.folder & "/source/main.adb"),
		to_unbounded_string (core.folder & "/source/material.adb"),
		to_unbounded_string (core.folder & "/source/material.ads"),
		to_unbounded_string (core.folder & "/source/might.adb"),
		to_unbounded_string (core.folder & "/source/might.ads"),
		to_unbounded_string (core.folder & "/source/ray.ads"),
		to_unbounded_string (core.folder & "/source/resource.adb"),
		to_unbounded_string (core.folder & "/source/resource.ads"),
		to_unbounded_string (core.folder & "/source/skill.adb"),
		to_unbounded_string (core.folder & "/source/skill.ads"),
		to_unbounded_string (core.folder & "/source/ui.adb"),
		to_unbounded_string (core.folder & "/source/ui.ads"),
		to_unbounded_string (core.folder & "/source/unit.adb"),
		to_unbounded_string (core.folder & "/source/unit.ads"),
		to_unbounded_string (core.folder & "/source/world.adb"),
		to_unbounded_string (core.folder & "/source/world.ads")
	);

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

begin

	core.dash;
	core.echo (core.comment, "Copyright (C) 2024 -- Ognjen 'xolatile' Milan Robovic");
	core.echo (core.comment, "Version -- 1.0.0");
	core.echo (core.comment, "License -- GNU/GPLv3+");
	core.echo (core.comment, "Xhads is free software, you can redistribute it and modify it under the terms of the GNU General Public License by Free Software Foundation.");
	core.dash;

	core.initialize;

	ui.active := ui.main;

	ui.configure;

	--~core.play (core.import_song (core.c_string (core.folder & "/song/main_menu.ogg")).index);

	attribute.configure;
	skill.configure;
	resource.configure;
	--~might.configure;
	magic.configure;
	material.configure;
	equipment.configure;
	unit.configure;
	deity.configure;
	construction.configure;
	chad.configure;
	world.configure;
	--~ai.configure;

	world.make     (world.swamp, 240, 180, 8);
	world.add_chad (player);

	core.dash;
	core.echo (core.success, "Successfully initialized game data, entering main gameplay loop.");
	core.dash;

	for index in view loop
		view_icon (index) := core.import_sprite (core.folder & "/icon/engine/" & core.lowercase (view'image (index)) & ".png", 1, 1);
	end loop;

	game_title := core.import_sprite (core.folder & "/ui/game_title.png", 1, 1);

	for index in world.biome loop
		game_preview (index) := core.import_sprite (core.folder & "/ui/preview/" & core.lowercase (world.biome'image (index)) & "land.png", 1, 1);
	end loop;

                                             ------------------------------------------------------------------------------------------

	introduction_loop: loop
		core.synchronize;
		--
		exit when core.signal_mode = core.signal_space or core.cursor_mode = core.cursor_right;
		--
		case core.signal_mode is
			when core.signal_none  => null;
			when core.signal_space => null;
			when others            => switch := (switch + 1) mod world.biome_count;
			                          choose := world.biome'val (switch);
		end case;
		--
		core.draw (game_preview (choose), core.center_x (game_preview (choose).width * 2), core.center_y (game_preview (choose).height * 2), factor => 2);
		core.draw (game_title,            core.center_x (game_title.width            * 2), core.center_y (game_title.height            * 2), factor => 2);
		--
		ui.write ("[-- Press Spacebar or RMB to continue]", 0, core.center_y (24), (102, 102, 102, 255));
	end loop introduction_loop;

	core.cursor_mode := core.cursor_none;

	main_menu_loop: loop
		core.synchronize;
		--
		exit when core.signal_mode = core.signal_space or core.cursor_mode = core.cursor_right;
		--
		declare source_code_data : core.string_box_data;
		begin
			core.import_text (source_code_data, to_string (source_code (view_source_code)));
			--
			if core.cursor_mode = core.cursor_left then
				view_source_code := (view_source_code + 1) mod 36;
				core.cursor_mode := core.cursor_none;
				core.wheel := 0.0;
			end if;
			--
			ui.write_ada_code (source_code_data, 0, integer (core.wheel) * 30);
		end;
	end loop main_menu_loop;

	core.cursor_mode := core.cursor_none;

	ui.active := ui.style'val (faction.enumeration'pos (chad.trait (player.index).kind) + 1);

	gameplay_loop: loop
		core.synchronize;
		--
		exit when core.engine_active = false;
		--
		if not view_list (status_preview_panel) then
			side_panel := 0;
		else
			side_panel := 376 + 2 * 32;
		end if;
		--
		preview_width   := core.window_width  - side_panel;
		preview_height  := core.window_height - text_box_height;
		text_box_height := 32;
		--
		world.draw;
		--
		if view_list (map_preview_panel) then
			ui.draw_menu (0, 0, preview_width, preview_height);
		end if;
		--
		if view_list (status_preview_panel) then
			ui.draw_tiny_menu     (preview_width, 0, side_panel, preview_height);
			chad.draw_data        (world.map.chads (1), preview_width + 32, 32);
			--~ui.draw_state_box (preview_width + 32, 32);
		end if;
		--
		if view_list (text_box_panel) then
			ui.draw_help_box (0, core.window_height - text_box_height, core.window_width - core.icon * (view'pos (view'last) + 1), text_box_height);
		end if;
		--
		for index in view loop
			ui.draw_icon (view_icon (index), view_text (index),
			              core.window_width - core.icon * (view'pos (view'last) + 1) + core.icon * view'pos (index),
			              core.window_height - text_box_height,
			              view_show (index));
		end loop;
		--
		resource.draw_points (world.map.chads (1).resources, (preview_width - 5 * core.icon * resource.count) / 2, (if view_list (map_preview_panel) then core.icon else 0));
		--
		signal_list (core.signal_mode).all;
		--
		--~magic.menu (0, 0, true);
		--~might.menu (0, 0, true);
		--
		--~chad.draw_alice;
		--
		--~deity.draw (deity.AEZORA, 300, 300);
		--~deity.draw (deity.ULDRAE, 500, 300);
		--
		ui.write (core.framerate'image, core.window_width - 5 * core.icon + 3, core.window_height - 27);
		--
		core.camera.x := world.map.chads (1).x;
		core.camera.y := world.map.chads (1).y;
		--
		ui.synchronize;
	end loop gameplay_loop;

	world.save ("heyo");

	core.save ("test.a", null, 0);

	--~world.mapshot (folder & "/mapshot.png");

                                             ------------------------------------------------------------------------------------------

	core.deinitialize;

	core.dash;

end main;