"""
Setup wizard for Social Media Collection Downloader.
Run this first to configure your collections, cookies, and options.
"""

import json
import sys
import os
import subprocess
from pathlib import Path

CONFIG_DIR = Path(__file__).parent / "config"
CONFIG_PATH = CONFIG_DIR / "config.json"
CONFIG_DIR.mkdir(exist_ok=True)


def check_dependency(cmd: str, name: str, install_hint: str) -> bool:
    try:
        subprocess.run([cmd, "--version"], capture_output=True, check=True)
        print(f"  ✓ {name} found")
        return True
    except (FileNotFoundError, subprocess.CalledProcessError):
        print(f"  ✗ {name} not found — {install_hint}")
        return False


def check_dependencies():
    print("\n── Checking dependencies ──────────────────────────────────")
    ok = True
    ok &= check_dependency("yt-dlp", "yt-dlp", "pip install yt-dlp")
    try:
        from playwright.sync_api import sync_playwright
        print("  ✓ Playwright found")
    except ImportError:
        print("  ✗ Playwright not found — pip install playwright && playwright install chromium")
        ok = False
    return ok


def prompt(question: str, default: str = "") -> str:
    if default:
        val = input(f"  {question} [{default}]: ").strip()
        return val if val else default
    else:
        return input(f"  {question}: ").strip()


def prompt_bool(question: str, default: bool = True) -> bool:
    d = "Y/n" if default else "y/N"
    val = input(f"  {question} [{d}]: ").strip().lower()
    if not val:
        return default
    return val in ("y", "yes", "1", "true")


def setup_platform(platform: str) -> dict:
    print(f"\n── {platform} Setup ─────────────────────────────────────────")
    cfg: dict = {}

    enabled = prompt_bool(f"Enable {platform}?", True)
    cfg["enabled"] = enabled
    if not enabled:
        return cfg

    print(f"""
  How to get your cookies:
  1. Install "Get cookies.txt LOCALLY" browser extension
  2. Log into {platform.lower()}.com
  3. Click the extension and export cookies as JSON (or Netscape .txt)
  4. Save the file anywhere and enter the path below

  OR: let yt-dlp read cookies directly from your browser (Chrome/Firefox)
  (your browser must be closed or the profile must be accessible)
""")

    method = prompt("Cookie method — (1) cookies file  (2) browser auto-read", "1")

    if method == "2":
        browser = prompt("Browser name (chrome / firefox / edge / safari)", "chrome")
        cfg["cookies_from_browser"] = browser
        cfg["cookies_file"] = None
    else:
        cookies_path = prompt("Path to cookies file (JSON or Netscape txt)", "")
        cfg["cookies_file"] = cookies_path if cookies_path else None
        cfg["cookies_from_browser"] = None

    print(f"\n  Enter your {platform} collection/saved URLs.")
    print("  TikTok: Go to your profile → Collections → open a collection → copy URL")
    print("  Instagram: Go to profile → Saved → open a collection → copy URL")
    print("  (Enter one per line, blank line when done)\n")

    collections = []
    while True:
        url = input("  Collection URL (or press Enter to finish): ").strip()
        if not url:
            break
        if url.startswith("http"):
            collections.append(url)
            print(f"    Added: {url}")
        else:
            print("    ⚠ That doesn't look like a URL, skipping.")

    cfg["collections"] = collections

    cfg["unsave_after_download"] = prompt_bool("Unsave/remove posts after downloading?", True)
    cfg["headless"] = prompt_bool("Run browser in headless mode (invisible) for unsaving?", False)

    delay_dl = prompt("Seconds to wait between downloads (avoid rate limits)", "2")
    cfg["delay_between_downloads"] = int(delay_dl) if delay_dl.isdigit() else 2

    delay_un = prompt("Seconds to wait between unsaves", "3")
    cfg["delay_between_unsaves"] = int(delay_un) if delay_un.isdigit() else 3

    return cfg


def save_config(config: dict):
    with open(CONFIG_PATH, "w") as f:
        json.dump(config, f, indent=2)
    print(f"\n  ✓ Config saved to {CONFIG_PATH}")


def print_banner():
    print("""
╔══════════════════════════════════════════════════════════╗
║     Social Media Collection Downloader — Setup           ║
║     TikTok & Instagram → Download → Auto-unsave          ║
╚══════════════════════════════════════════════════════════╝
""")


def main():
    print_banner()
    deps_ok = check_dependencies()
    if not deps_ok:
        print("\n  Please install missing dependencies first, then re-run setup.py")
        print("\n  Quick install:")
        print("    pip install yt-dlp playwright")
        print("    playwright install chromium\n")
        sys.exit(1)

    config = {}
    config["tiktok"] = setup_platform("TikTok")
    config["instagram"] = setup_platform("Instagram")

    print("\n── Summary ─────────────────────────────────────────────────")
    for platform in ["tiktok", "instagram"]:
        p = config[platform]
        status = "✓ Enabled" if p.get("enabled") else "✗ Disabled"
        n = len(p.get("collections", []))
        print(f"  {platform.capitalize()}: {status} | {n} collection(s)")

    if prompt_bool("\n  Save this config and run now?", True):
        save_config(config)
        print("\n  Running downloader...\n")
        subprocess.run([sys.executable, str(Path(__file__).parent / "downloader.py")])
    else:
        save_config(config)
        print("\n  Config saved. Run later with:")
        print("    python downloader.py\n")


if __name__ == "__main__":
    main()