class JSConsoleModule {
    constructor() {
        this.commands = {};
        this.commandsMeta = { 'js': { argType: 'file' }, 'js-run': { argType: 'file' } };
        this.terminal = null;
    }

    getHelpInfo() {
        return {
            'js': 'js <expression> — Evaluate JavaScript in page context',
            'js-run': 'js-run <path> — Load and execute a JS file from VFS'
        };
    }

    registerCommands() {
        this.commands['js'] = (args) => this.evalJS(args);
        this.commands['js-run'] = (args) => this.evalJSFile(args);
    }

    evalJS(args) {
        if (!args[0]) return this.terminal.print('Usage: js <expression>', 'warning');
        const expr = args.join(' ');
        try {
            const result = eval(expr);
            const output = result === undefined ? 'undefined' :
                typeof result === 'string' ? result :
                result === null ? 'null' :
                typeof result === 'object' ? JSON.stringify(result, null, 2) :
                String(result);
            this.terminal.print(output, 'success');
        } catch (e) {
            this.terminal.print(`Error: ${e.message}`, 'error');
        }
    }

    evalJSFile(args) {
        if (!args[0]) return this.terminal.print('Usage: js-run <path>', 'warning');
        const path = args.join(' ');
        try {
            const content = this.terminal.fs.readFile(path);
            if (content === null || content === undefined || content === false) {
                return this.terminal.print(`js-run: ${path}: No such file`, 'error');
            }
            // Wrap in an async IIFE so multi-line scripts with await work
            const wrapped = `(async () => {\n${content}\n})()`;
            const result = eval(wrapped);
            // If it returns a promise, wait for it via .then
            if (result && typeof result.then === 'function') {
                result.then(val => {
                    const output = val === undefined ? '✓ Script executed' :
                        typeof val === 'string' ? val :
                        val === null ? 'null' :
                        typeof val === 'object' ? JSON.stringify(val, null, 2) :
                        String(val);
                    this.terminal.print(output, 'success');
                }).catch(e => {
                    this.terminal.print(`Error: ${e.message}`, 'error');
                });
                return;
            }
            const output = result === undefined ? '✓ Script executed' :
                typeof result === 'string' ? result :
                result === null ? 'null' :
                typeof result === 'object' ? JSON.stringify(result, null, 2) :
                String(result);
            this.terminal.print(output, 'success');
        } catch (e) {
            this.terminal.print(`Error: ${e.message}`, 'error');
        }
    }

    seed() {}
    init() {}
}

if (typeof window !== 'undefined') window.JSConsoleModule = JSConsoleModule;