#!/usr/bin/env node
// Simple CLI to load a module JS file and run one of its functions.
// Made by Cufiy
// Works with CommonJS exports or files that define top-level global functions (executed in a VM sandbox).
// Usage examples (PowerShell-safe quoting):
// node run_module.js --path 'temp_modules/AniCrush_(ENG_SUB).js' --function searchResults --param '"naruto"'
// node run_module.js --path 'temp_modules/AniCrush_(ENG_SUB).js' --function extractStreamUrl --param '"_movieId=123&ep=1&sv=4&sc=sub"'

const fs = require('fs');
const path = require('path');
const vm = require('vm');

function parseArgs() {
  const args = process.argv.slice(2);
  const out = {};
  for (let i = 0; i < args.length; i++) {
    const a = args[i];
    if (a === '--path' && args[i+1]) { out.path = args[++i]; }
    else if (a === '--function' && args[i+1]) { out.function = args[++i]; }
    else if (a === '--param' && args[i+1]) { out.param = args[++i]; }
    else if (a === '--quiet' || a === '-q') { out.quiet = true; }
    else if (a === '--debug' || a === '-d') { out.debug = true; }
    else if (a === '--debug-full') { out.debugFull = true; }
    else if (a === '--sandbox') { out.sandbox = true; }
    else if (a === '--help') { out.help = true; }
  }
  return out;
}

async function loadModuleWithSandbox(filePath, debugLog, opts = {}) {
  // Read file and execute in a VM context so top-level functions become properties on the sandbox.
  const code = await fs.promises.readFile(filePath, 'utf8');

  // Provide fetchv2 as a wrapper that mimics the module's expected behavior
  // helper for conditional logging based on flags
  const pushDebug = (msg, level = 'info', source = 'RUNNER') => {
    if (opts.quiet && level !== 'error') return;
    if (!opts.debug && level === 'debug') return;
    const tag = `[${String(level || 'info').toUpperCase()}]`;
    const src = `[${String(source || 'RUNNER').toUpperCase()}]`;
    const entry = `${tag} ${src} ${String(msg)}`;
    debugLog.push(entry);
  };

  const fetchv2 = async (url, options) => {
    // fetch calls initiated by the module — mark as MODULE
    pushDebug('[FETCH REQUEST] ' + url + ' ' + formatArg(options), 'debug', 'MODULE');
    try {
      const response = await fetch(url, options);
      // Try to read a clone of the body for transparent logging without consuming the original.
      // Attach an 'error' handler to the clone stream to avoid unhandled stream errors
      let bodyText = null;
      try {
        if (response && typeof response.clone === 'function') {
          const clone = response.clone();
          // If the clone exposes a Node.js stream, capture errors to avoid crashing the process
          try {
            if (clone && clone.body && typeof clone.body.on === 'function') {
              clone.body.on('error', (err) => {
                pushDebug('[FETCH RESPONSE BODY STREAM ERROR] ' + (err && err.message), 'error', 'MODULE');
              });
            }
          } catch (e) {
            // ignore
          }
          try {
            bodyText = await clone.text();
          } catch (e) {
            // fallback to arrayBuffer -> string conversion
            try {
              const buf = await clone.arrayBuffer();
              bodyText = Buffer.from(buf).toString('utf8');
            } catch (e2) {
              bodyText = '[unreadable body]';
            }
          }
        } else if (response && typeof response.text === 'function') {
          // fallback (may consume body)
          try {
            bodyText = await response.text();
          } catch (e) {
            bodyText = '[unreadable body]';
          }
        }
      } catch (e) {
        bodyText = '[unreadable body]';
      }
      // truncate response body for logs unless debug+debugFull are set
      let displayBody = bodyText;
      try {
        const isFull = Boolean(opts && opts.debug && opts.debugFull);
        if (typeof bodyText === 'string' && !isFull) {
          displayBody = bodyText.length > 100 ? bodyText.slice(0,100) + '…' : bodyText;
        }
      } catch (e) {
        // ignore
      }
      pushDebug('[FETCH RESPONSE] ' + url + ' status=' + (response && response.status) + ' body=' + formatArg(displayBody), 'debug', 'MODULE');
      return response;
    } catch (error) {
      pushDebug('[FETCH ERROR] ' + url + ' ' + (error && error.message), 'error', 'MODULE');
      throw error;
    }
  };

  const formatArg = (arg) => {
    if (typeof arg === 'object' && arg !== null) {
      try {
        return JSON.stringify(arg);
      } catch (e) {
        return String(arg);
      }
    }
    return String(arg);
  };

  const sandbox = {
    console: {
      log: (...args) => pushDebug(args.map(formatArg).join(' '), 'info', 'MODULE'),
      error: (...args) => pushDebug('[ERROR] ' + args.map(formatArg).join(' '), 'error', 'MODULE'),
      warn: (...args) => pushDebug('[WARN] ' + args.map(formatArg).join(' '), 'warn', 'MODULE'),
      info: (...args) => pushDebug('[INFO] ' + args.map(formatArg).join(' '), 'info', 'MODULE'),
      debug: (...args) => pushDebug('[DEBUG] ' + args.map(formatArg).join(' '), 'debug', 'MODULE')
    },
    // allow access to require and module/exports in case the script uses CommonJS patterns
    require: require,
    module: { exports: {} },
    exports: {},
    // override fetch with our logging wrapper (and also expose fetchv2)
    fetch: fetchv2,
    fetchv2: fetchv2,
    // Provide soraFetch as an alias in case modules use it
    soraFetch: fetchv2,
    // Inject small obfuscated helper if modules expect it
    _0xB4F2: function() { return "accinrxxxxxxxxxx"; },
    // Encoding functions
    encodeURIComponent: encodeURIComponent,
    decodeURIComponent: decodeURIComponent,
    // JSON operations
    JSON: JSON,
    // Promise support
    Promise: Promise,
    // small helper to avoid accidental infinite loops
    setTimeout,
    setInterval,
    clearTimeout,
    clearInterval
  };

  const context = vm.createContext(sandbox);

  try {
    const script = new vm.Script(code, { filename: filePath });
    script.runInContext(context, { timeout: 5000 });
  } catch (e) {
    // running the file might fail if it expects browser globals — that's okay, we still return what we have
    // silently continue
  }

  // Merge module.exports/exports into sandbox for easier lookup
  const mod = Object.assign({}, sandbox.module && sandbox.module.exports ? sandbox.module.exports : {}, sandbox.exports || {});
  // Also attach any top-level functions that were defined (e.g., function searchResults() { ... })
  // We need to iterate over sandbox properties, not context
  for (const k of Object.keys(sandbox)) {
    if (!(k in mod) && typeof sandbox[k] === 'function') {
      mod[k] = sandbox[k];
    }
  }

  return mod;
}

async function main() {
  const opts = parseArgs();
  const debugLog = [];
  
  if (opts.help || !opts.path || !opts.function) {
    console.log(JSON.stringify({
      status: 'error',
      message: 'Usage: node run_module.js --path <file> --function <fnName> [--param <jsonOrString>]',
      data: null,
      debug: []
    }));
    process.exit(opts.help ? 0 : 1);
  }

  const filePath = path.resolve(opts.path);
  if (!fs.existsSync(filePath)) {
    console.log(JSON.stringify({
      status: 'error',
      message: 'File not found: ' + filePath,
      data: null,
      debug: []
    }));
    process.exit(2);
  }

  let mod = {};

  // Optionally prefer sandbox execution (avoids require side-effects and lets us hook internal functions)
  // Load module: prefer sandbox first (so we can hook top-level functions). If sandbox doesn't expose the requested
  // function, fall back to require(). If --sandbox is set, only use sandbox.
  if (opts.sandbox) {
    mod = await loadModuleWithSandbox(filePath, debugLog, opts);
  } else {
    try {
      mod = await loadModuleWithSandbox(filePath, debugLog, opts);
    } catch (e) {
      // ignore sandbox errors
    }

    if (!mod || !(opts.function in mod)) {
      try {
        delete require.cache[require.resolve(filePath)];
        const required = require(filePath);
        if (required && (typeof required === 'object' || typeof required === 'function')) {
          mod = required;
        }
      } catch (e) {
        // ignore require errors
      }
    }
  }

  // helper for main-scope debug logging (used by wrappers)
  const pushMainDebug = (msg, level = 'info') => {
    if (opts.quiet && level !== 'error') return;
    if (!opts.debug && level === 'debug') return;
    const tag = `[${String(level || 'info').toUpperCase()}]`;
    const src = `[RUNNER]`;
    debugLog.push(`${tag} ${src} ${String(msg)}`);
  };

  // If module exposes multiExtractor, wrap it to log providers when --debug
  const wrapMulti = (fn) => {
    const _orig = fn;
    return async function(providers) {
      if (opts && opts.debug) {
        try {
          pushMainDebug('[multiExtractor providers] ' + (typeof providers === 'object' ? JSON.stringify(providers) : String(providers)), 'debug');
        } catch (e) {
          pushMainDebug('[multiExtractor providers] [unserializable]', 'debug');
        }
      }
      return await _orig.apply(this, arguments);
    };
  };

  if (mod) {
    if (typeof mod.multiExtractor === 'function') mod.multiExtractor = wrapMulti(mod.multiExtractor);
    if (typeof mod === 'function' && mod.name === 'multiExtractor') mod = { multiExtractor: wrapMulti(mod) };
    if (mod.default && typeof mod.default === 'function' && mod.default.name === 'multiExtractor') {
      mod.default = wrapMulti(mod.default);
      mod.multiExtractor = mod.default;
    }
  }

  let fn = mod[opts.function];
  // also check default export
  if (!fn && mod.default && typeof mod.default === 'object') fn = mod.default[opts.function];

  if (typeof fn !== 'function') {
    console.log(JSON.stringify({
      status: 'error',
      message: `Function '${opts.function}' not found in module`,
      data: null,
      debug: debugLog
    }));
    process.exit(4);
  }

  let param = opts.param;
  // try parse JSON, fallback to string
  try {
    if (param) param = JSON.parse(param);
  } catch (e) {
    // leave as string
  }

  try {
    const maybeResult = fn.length === 0 ? fn() : fn(param);
    // Check if it's a Promise - handle cross-context Promises
    const result = (maybeResult && typeof maybeResult.then === 'function') ? await maybeResult : maybeResult;
    
    // Parse the result if it's a JSON string (modules return JSON.stringify'd data)
    let data = result;
    if (typeof result === 'string') {
      try {
        data = JSON.parse(result);
      } catch (e) {
        // if it's not valid JSON, keep it as string
        data = result;
      }
    }
    
      // Prepare debug output: if quiet -> empty; if debug -> all entries; otherwise filter out DEBUG-level entries
      let outDebug = [];
      if (opts.quiet) outDebug = [];
      else if (opts.debug) outDebug = debugLog;
      else outDebug = debugLog.filter(d => !String(d).startsWith('[DEBUG]'));

      console.log(JSON.stringify({
        status: 'success',
        message: 'Fetch successful',
        data: data,
        debug: outDebug
      }));
  } catch (e) {
    console.log(JSON.stringify({
      status: 'error',
      message: 'Error executing function: ' + e.message,
      data: null,
      debug: debugLog
    }));
    process.exit(5);
  }
}

main();