export type CliConfig = {
	rendererId?: string;
	debugGlobalHud: boolean;
	debugRendererHud: boolean;
	crashRecoverySession?: string | true;
	errorScreenRequested?: boolean;
	errorScreenMessage?: string;
	errorScreenTitle?: string;
	errorScreenHint?: string;
	debugLogFile?: string;
	helpRequested: boolean;
};

export function parseCli(argv: string[]): CliConfig {
	// Bun passes: [bunPath, scriptPath, ...]
	const args = argv.slice(2);
	const config: CliConfig = {
		debugGlobalHud: false,
		debugRendererHud: false,
		helpRequested: false
	};

	for (let i = 0; i < args.length; i++) {
		const arg = args[i] ?? "";
		if (arg === "--help" || arg === "-h") {
			config.helpRequested = true;
			continue;
		}
		if (arg === "--renderer" && args[i + 1] && !args[i + 1]!.startsWith("--")) {
			config.rendererId = args[i + 1]!;
			i += 1;
			continue;
		}
		if (arg.startsWith("--renderer=")) {
			config.rendererId = arg.split("=")[1];
			continue;
		}
		if (arg === "--debug") {
			config.debugGlobalHud = true;
			config.debugRendererHud = true;
			continue;
		}
		if (arg === "--debug-global") {
			config.debugGlobalHud = true;
			continue;
		}
		if (arg === "--debug-renderer") {
			config.debugRendererHud = true;
			continue;
		}
		if (arg === "--error-screen") {
			config.errorScreenRequested = true;
			if (args[i + 1] && !args[i + 1]!.startsWith("--")) {
				config.errorScreenMessage = args[i + 1]!;
				i += 1;
			}
			continue;
		}
		if (arg.startsWith("--error-screen=")) {
			config.errorScreenRequested = true;
			config.errorScreenMessage = arg.split("=").slice(1).join("=");
			continue;
		}
		if (arg === "--error-title" && args[i + 1] && !args[i + 1]!.startsWith("--")) {
			config.errorScreenTitle = args[i + 1]!;
			i += 1;
			continue;
		}
		if (arg.startsWith("--error-title=")) {
			config.errorScreenTitle = arg.split("=").slice(1).join("=");
			continue;
		}
		if (arg === "--error-hint" && args[i + 1] && !args[i + 1]!.startsWith("--")) {
			config.errorScreenHint = args[i + 1]!;
			i += 1;
			continue;
		}
		if (arg.startsWith("--error-hint=")) {
			config.errorScreenHint = arg.split("=").slice(1).join("=");
			continue;
		}
		if (arg === "--debug-log-file" && args[i + 1] && !args[i + 1]!.startsWith("--")) {
			config.debugLogFile = args[i + 1]!;
			i += 1;
			continue;
		}
		if (arg.startsWith("--debug-log-file=")) {
			config.debugLogFile = arg.split("=").slice(1).join("=");
			continue;
		}
		if (arg === "--crash-recovery") {
			const maybeSession = args[i + 1];
			if (maybeSession && !maybeSession.startsWith("--")) {
				config.crashRecoverySession = maybeSession;
				i += 1;
			} else {
				config.crashRecoverySession = "Hyprland";
			}
			continue;
		}
	}

	return config;
}