#!/usr/bin/env python3
"""
Upload local profile pictures to Supabase and update user/profile records.

Usage:
  python scripts/update_profile_pictures.py --dir profile_pictures --apply
  python scripts/update_profile_pictures.py --dir profile_pictures  # dry run
"""

import argparse
import asyncio
import mimetypes
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
if str(ROOT) not in sys.path:
    sys.path.insert(0, str(ROOT))

from loguru import logger

from src.database import db
from src.services.storage_service import storage


def guess_content_type(path: Path) -> str:
    content_type, _ = mimetypes.guess_type(str(path))
    return content_type or "image/jpeg"


async def process_directory(directory: Path, apply: bool) -> None:
    if not directory.exists() or not directory.is_dir():
        raise ValueError(f"Directory not found: {directory}")

    files = sorted([p for p in directory.iterdir() if p.is_file()])
    if not files:
        print("No files found.")
        return

    updated = 0
    skipped = 0

    for path in files:
        email = path.stem.strip()
        if "@" not in email:
            print(f"Skip (no email in filename): {path.name}")
            skipped += 1
            continue

        user = await db.get_user_by_email(email)
        if not user:
            print(f"User not found for email: {email}")
            skipped += 1
            continue

        content_type = guess_content_type(path)
        file_bytes = path.read_bytes()

        print(f"\n{path.name} -> {email} ({content_type}, {len(file_bytes)} bytes)")

        if not apply:
            print("DRY RUN: would upload and update profile.")
            continue

        try:
            uploaded_url = await storage.upload_media(
                file_content=file_bytes,
                content_type=content_type,
                user_id=str(user.id),
            )

            await db.update_profile(user.id, {"profile_picture": uploaded_url})
            linkedin_account = await db.get_linkedin_account(user.id)
            if linkedin_account:
                await db.update_linkedin_account(
                    linkedin_account.id,
                    {"linkedin_picture": uploaded_url}
                )

            if db.admin_client:
                try:
                    await asyncio.to_thread(
                        lambda: db.admin_client.auth.admin.update_user_by_id(
                            str(user.id),
                            {
                                "user_metadata": {
                                    "picture": uploaded_url,
                                    "linkedin_picture": uploaded_url
                                }
                            }
                        )
                    )
                except Exception as exc:
                    logger.warning(f"Failed to update auth user metadata: {exc}")
            else:
                logger.warning("No service role key available; cannot update auth.users metadata.")

            updated += 1
            print(f"Updated profile picture: {uploaded_url}")
        except Exception as exc:
            logger.error(f"Failed to update {email}: {exc}")
            skipped += 1

    print(f"\nDone. Updated: {updated}, Skipped: {skipped}")


def parse_args() -> argparse.Namespace:
    parser = argparse.ArgumentParser(description="Upload profile pictures to Supabase and update users.")
    parser.add_argument("--dir", default="profile_pictures", help="Directory with profile pictures")
    parser.add_argument("--apply", action="store_true", help="Apply changes (otherwise dry run)")
    return parser.parse_args()


if __name__ == "__main__":
    args = parse_args()
    asyncio.run(process_directory(Path(args.dir), apply=args.apply))