#!/usr/bin/env bun

/**
 * Facebook Cookie Parser CLI
 *
 * Parses Facebook cookie strings into JSON format for the marketplace scraper
 *
 * Usage:
 *   bun run scripts/parse-facebook-cookies.ts "c_user=123; xs=abc"
 *   bun run scripts/parse-facebook-cookies.ts --input cookies.txt
 *   echo "c_user=123; xs=abc" | bun run scripts/parse-facebook-cookies.ts
 *   bun run scripts/parse-facebook-cookies.ts "cookie_string" --output my-cookies.json
 */

import { parseFacebookCookieString } from "../src/facebook";

interface Cookie {
  name: string;
  value: string;
  domain: string;
  path: string;
  secure?: boolean;
  httpOnly?: boolean;
  sameSite?: "strict" | "lax" | "none" | "unspecified";
  expirationDate?: number;
  storeId?: string;
}

function parseFacebookCookieStringCLI(cookieString: string): Cookie[] {
  if (!cookieString || !cookieString.trim()) {
    console.error("❌ Error: Empty or invalid cookie string provided");
    process.exit(1);
  }

  const cookies = parseFacebookCookieString(cookieString);

  if (cookies.length === 0) {
    console.error("❌ Error: No valid cookies found in input string");
    console.error('Expected format: "name1=value1; name2=value2;"');
    process.exit(1);
  }

  return cookies;
}

async function main() {
  const args = process.argv.slice(2);

  if (args.length === 0 && process.stdin.isTTY === false) {
    // Read from stdin
    let input = "";
    for await (const chunk of process.stdin) {
      input += chunk;
    }
    input = input.trim();

    if (!input) {
      console.error("❌ Error: No input provided via stdin");
      process.exit(1);
    }

    const cookies = parseFacebookCookieStringCLI(input);
    await writeOutput(cookies, "./cookies/facebook.json");
    return;
  }

  let cookieString = "";
  let outputPath = "./cookies/facebook.json";
  let inputPath = "";

  // Parse command line arguments
  for (let i = 0; i < args.length; i++) {
    const arg = args[i];

    if (arg === "--input" || arg === "-i") {
      inputPath = args[i + 1];
      i++; // Skip next arg
    } else if (arg === "--output" || arg === "-o") {
      outputPath = args[i + 1];
      i++; // Skip next arg
    } else if (arg === "--help" || arg === "-h") {
      showHelp();
      return;
    } else if (!arg.startsWith("-")) {
      // Assume this is the cookie string
      cookieString = arg;
    } else {
      console.error(`❌ Unknown option: ${arg}`);
      showHelp();
      process.exit(1);
    }
  }

  // Read from file if specified
  if (inputPath) {
    try {
      const file = Bun.file(inputPath);
      if (!(await file.exists())) {
        console.error(`❌ Error: Input file not found: ${inputPath}`);
        process.exit(1);
      }
      cookieString = await file.text();
    } catch (error) {
      console.error(`❌ Error reading input file: ${error}`);
      process.exit(1);
    }
  }

  if (!cookieString.trim()) {
    console.error("❌ Error: No cookie string provided");
    console.error(
      "Provide cookie string as argument, --input file, or via stdin",
    );
    showHelp();
    process.exit(1);
  }

  const cookies = parseFacebookCookieStringCLI(cookieString);
  await writeOutput(cookies, outputPath);
}

async function writeOutput(cookies: Cookie[], outputPath: string) {
  try {
    await Bun.write(outputPath, JSON.stringify(cookies, null, 2));
    console.log(`✅ Successfully parsed ${cookies.length} Facebook cookies`);
    console.log(`📁 Saved to: ${outputPath}`);

    // Show summary of parsed cookies
    console.log("\n📋 Parsed cookies:");
    for (const cookie of cookies) {
      console.log(
        `   • ${cookie.name}: ${cookie.value.substring(0, 20)}${cookie.value.length > 20 ? "..." : ""}`,
      );
    }
  } catch (error) {
    console.error(`❌ Error writing to output file: ${error}`);
    process.exit(1);
  }
}

function showHelp() {
  console.log(`
Facebook Cookie Parser CLI

Parses Facebook cookie strings into JSON format for the marketplace scraper.

USAGE:
  bun run scripts/parse-facebook-cookies.ts [OPTIONS] [COOKIE_STRING]

EXAMPLES:
  # Parse from command line argument
  bun run scripts/parse-facebook-cookies.ts "c_user=123; xs=abc"

  # Parse from file
  bun run scripts/parse-facebook-cookies.ts --input cookies.txt

  # Parse from stdin
  echo "c_user=123; xs=abc" | bun run scripts/parse-facebook-cookies.ts

  # Output to custom file
  bun run scripts/parse-facebook-cookies.ts "cookie_string" --output my-cookies.json

OPTIONS:
  -i, --input FILE     Read cookie string from file
  -o, --output FILE    Output file path (default: ./cookies/facebook.json)
  -h, --help           Show this help message

COOKIE FORMAT:
  Semicolon-separated name=value pairs
  Example: "c_user=123456789; xs=abcdef123456; fr=xyz789"

OUTPUT:
  JSON array of cookie objects saved to ./cookies/facebook.json
`);
}

// Run the CLI
if (import.meta.main) {
  main().catch((error) => {
    console.error(`❌ Unexpected error: ${error}`);
    process.exit(1);
  });
}