package funkin.backend.system;

import lime.utils.AssetLibrary as LimeAssetLibrary;
import lime.utils.AssetType;
import flixel.util.FlxColor;

import lime.app.Application;
import funkin.backend.system.macros.GitCommitMacro;
import funkin.backend.assets.IModsAssetLibrary;
import funkin.backend.assets.ScriptedAssetLibrary;

/**
 * A class that reads the `flags.ini` file, allowing to read settable Flags (customs too).
 */
@:build(funkin.backend.system.macros.FlagMacro.build())
class Flags {
	// -- Codename's Default Flags --
	public static var COMMIT_NUMBER:Int = GitCommitMacro.commitNumber;
	public static var COMMIT_HASH:String = GitCommitMacro.commitHash;
	public static var COMMIT_MESSAGE:String = 'Commit $COMMIT_NUMBER ($COMMIT_HASH)';

	@:lazy public static var TITLE:String = Application.current.meta.get('name');
	@:lazy public static var VERSION:String = Application.current.meta.get('version');

	@:lazy public static var VERSION_MESSAGE:String = 'Codename Engine v$VERSION';

	public static var REPO_NAME:String = "CodenameEngine";
	public static var REPO_OWNER:String = "CodenameCrew";
	public static var REPO_URL:String = 'https://github.com/$REPO_OWNER/$REPO_NAME';

	// make this empty once you guys are done with the project.
	// good luck /gen <3 @crowplexus
	public static var RELEASE_CYCLE:String = "Beta";

	/**
	 * Preferred sound extension for the game's audio files.
	 * Currently is set to `mp3` for web targets, and `ogg` for other targets.
	 */
	public static var SOUND_EXT:String = #if web "mp3" #else "ogg" #end; // we also support wav
	public static var VIDEO_EXT:String = "mp4";
	public static var IMAGE_EXT:String = "png"; // we also support jpg

	public static var DEFAULT_DISCORD_LOGO_KEY:String = "icon";
	public static var DEFAULT_DISCORD_CLIENT_ID:String = "1027994136193810442";
	public static var DEFAULT_DISCORD_LOGO_TEXT:String = "Codename Engine";

	@:also(funkin.game.Character.FALLBACK_CHARACTER)
	public static var DEFAULT_CHARACTER:String = "bf";
	public static var DEFAULT_GIRLFRIEND:String = "gf";
	public static var DEFAULT_OPPONENT:String = "dad";

	@:also(funkin.game.PlayState.difficulty)
	public static var DEFAULT_DIFFICULTY:String = "normal";
	public static var DEFAULT_STAGE:String = "stage";
	public static var DEFAULT_SCROLL_SPEED:Float = 2.0;
	public static var DEFAULT_HEALTH_ICON:String = "face";

	public static var SONGS_LIST_MOD_MODE:Allow<"prepend", "override", "append"> = "override";
	public static var WEEKS_LIST_MOD_MODE:Allow<"prepend", "override", "append"> = "override";

	public static var DEFAULT_BPM:Float = 100.0;
	public static var DEFAULT_BEATS_PER_MEASURE:Float = 4;
	public static var DEFAULT_STEPS_PER_BEAT:Int = 4;

	public static var SUPPORTED_CHART_RUNTIME_FORMATS:Array<String> = ["Legacy", "Psych Engine"];
	public static var SUPPORTED_CHART_FORMATS:Array<String> = ["BaseGame"];

	public static var BASEGAME_SONG_METADATA_VERSION:String = "2.2.2";
	public static var BASEGAME_SONG_CHART_DATA_VERSION:String = "2.0.0";
	public static var BASEGAME_DEFAULT_NOTE_STYLE:String = 'funkin';
	public static var BASEGAME_DEFAULT_ALBUM_ID:String = 'volume1';
	public static var BASEGAME_DEFAULT_PREVIEW_START:Float = 0;
	public static var BASEGAME_DEFAULT_PREVIEW_END:Float = 15000;

	/**
	 * Default background colors for songs without bg color
	 */
	public static var DEFAULT_COLOR:FlxColor = 0xFF9271FD;
	public static var DEFAULT_COOP_ALLOWED:Bool = false;
	public static var DEFAULT_OPPONENT_MODE_ALLOWED:Bool = false;

	@:also(funkin.game.PlayState.coopMode)
	public static var DEFAULT_COOP_MODE:Bool = false; // used in playstate if it doesn't find it
	@:also(funkin.game.PlayState.opponentMode)
	public static var DEFAULT_OPPONENT_MODE:Bool = false;

	public static var DEFAULT_NOTE_MS_LIMIT:Float = 1500;
	public static var DEFAULT_NOTE_SCALE:Float = 0.7;

	@:also(funkin.game.Character.FALLBACK_DEAD_CHARACTER)
	public static var DEFAULT_GAMEOVER_CHARACTER:String = "bf-dead";
	public static var DEFAULT_GAMEOVER_SONG:String = "gameOver";
	public static var DEFAULT_GAMEOVER_LOSS_SFX:String = "gameOverSFX";
	public static var DEFAULT_GAMEOVER_RETRY_SFX:String = "gameOverEnd";

	public static var DEFAULT_CAM_ZOOM_INTERVAL:Int = 4;
	public static var DEFAULT_CAM_ZOOM_STRENGTH:Int = 1;
	public static var DEFAULT_CAM_ZOOM:Float = 1.05; // what zoom level it defaults to
	public static var DEFAULT_HUD_ZOOM:Float = 1.0;
	public static var MAX_CAMERA_ZOOM:Float = 1.35;

	public static var DEFAULT_PAUSE_ITEMS:Array<String> = ['Resume', 'Restart Song', 'Change Controls', 'Change Options', 'Exit to menu', "Exit to charter"];
	public static var DEFAULT_CUTSCENE_PAUSE_ITEMS:Array<String> = ['Resume Cutscene', 'Skip Cutscene', 'Restart Cutscene', 'Exit to menu'];
	public static var DEFAULT_GITAROO:Bool = true;
	public static var GITAROO_CHANCE:Float = 0.1;
	public static var DEFAULT_MUTE_VOCALS_ON_MISS:Bool = true;

	public static var DEFAULT_MAX_HEALTH:Float = 2.0;
	public static var DEFAULT_HEALTH:Null<Float> = null;//DEFAULT_MAX_HEALTH / 2.0;
	public static var BOP_ICON_SCALE:Float = 1.2;
	public static var ICON_OFFSET:Float = 26;
	public static var ICON_LERP:Float = 0.33;

	public static var CAM_BOP_STRENGTH:Float = 0.015;
	public static var HUD_BOP_STRENGTH:Float = 0.03;
	public static var DEFAULT_CAM_ZOOM_LERP:Float = 0.05;
	public static var DEFAULT_HUD_ZOOM_LERP:Float = 0.05;

	public static var MAX_SPLASHES:Int = 8;
	public static var STUNNED_TIME:Float = 5 / 60;

	@:also(funkin.game.PlayState.daPixelZoom)
	public static var PIXEL_ART_SCALE:Float = 6.0;

	public static var DEFAULT_COMBO_GROUP_MAX_SIZE:Int = 25;

	public static var DEFAULT_STRUM_AMOUNT:Int = 4;
	public static var DEFAULT_CAMERA_FOLLOW_SPEED:Float = 0.04;

	public static var VOCAL_OFFSET_VIOLATION_THRESHOLD:Float = 25;

	// Usage: Codename Credits
	public static var MAIN_DEVS_COLOR:FlxColor = 0xFF9C35D5;
	public static var MIN_CONTRIBUTIONS_COLOR:FlxColor = 0xFFB4A7DA;

	public static var UNDO_PREFIX:String = "* ";
	public static var JSON_PRETTY_PRINT:String = "\t";

	public static var DISABLE_EDITORS:Bool = false;
	public static var DISABLE_BETA_WARNING_SCREEN:Bool = false;
	public static var DISABLE_TRANSITIONS:Bool = false;

	@:also(funkin.backend.MusicBeatTransition.script)
	public static var DEFAULT_TRANSITION_SCRIPT:String = "";
	@:also(funkin.menus.PauseSubState.script)
	public static var DEFAULT_PAUSE_SCRIPT:String = "";
	@:also(funkin.game.GameOverSubstate.script)
	public static var DEFAULT_GAMEOVER_SCRIPT:String = "";

	public static var URL_WIKI:String = "https://codename-engine.com/";
	public static var URL_EDITOR_FALLBACK:String = "https://www.youtube.com/watch?v=9Youam7GYdQ";
	public static var URL_FNF_ITCH:String = "https://ninja-muffin24.itch.io/funkin";

	public static var DEFAULT_GLSL_VERSION:String = "120";
	@:also(funkin.backend.utils.HttpUtil.userAgent)
	public static var USER_AGENT:String = 'request';
	// -- End of Codename's Default Flags --

	/**
	 * Flags that Codename couldn't recognize as it's own defaults (they can only be `string`!).
	 */
	@:bypass public static var customFlags:Map<String, String> = [];

	public static function loadFromData(flags:Map<String, String>, data:String) {
		var trimmed:String;
		var splitContent = [for(e in data.split("\n")) if ((trimmed = e.trim()) != "") trimmed];

		for(line in splitContent) {
			if(line.startsWith(";")) continue;
			if(line.startsWith("#")) continue;
			if(line.startsWith("//")) continue;
			if(line.length == 0) continue;
			if(line.charAt(0) == "[" && line.charAt(line.length-1) == "]") continue;

			var index = line.indexOf("=");
			if(index == -1) continue;
			var name = line.substr(0, index).trim();
			var value = line.substr(index+1).trim();

			var wasQuoted = value.length > 1 && value.charCodeAt(0) == '"'.code && value.charCodeAt(value.length-1) == '"'.code;
			if(wasQuoted) value = value.substr(1, value.length - 2);
			if((!wasQuoted && value.length == 0) || name.length == 0)
				continue;

			if(!flags.exists(name))
				flags[name] = value;
		}
	}

	public static function loadFromDatas(files:Array<String>) {
		var flags:Map<String, String> = [];
		for(file in files) {
			var data:String = Assets.getText(file);
			if(data != null)
				loadFromData(flags, data);
		}
		return flags;
	}

	public static function parseFlags(flags:Map<String, String>) {
		customFlags = [];
		reset();
		for(name=>value in flags)
			if(!parse(name, value))
				customFlags.set(name, value);
	}

	/**
	 * Loads the flags from the assets.
	**/
	public static function load(?libs:Array<LimeAssetLibrary> = null) {
		if (libs == null)
			libs = Paths.assetsTree.libraries;
		final flagsPath = Paths.getPath("flags.ini");
		var datas:Array<String> = [
			for(lib in libs)
				if(lib.exists(flagsPath, AssetType.TEXT))
					lib.getAsset(flagsPath, AssetType.TEXT)
		];

		var flags:Map<String, String> = loadFromDatas(datas);
		parseFlags(flags);
	}
}