#!/usr/bin/env python3
"""
Migration runner — migrations/ dizinindeki SQL dosyalarını sırayla çalıştırır.
Hangi migration'ların çalıştığını schema_migrations tablosunda tutar.
"""

import os
import sys
import psycopg
from pathlib import Path
from dotenv import load_dotenv

load_dotenv(Path(__file__).parent.parent / ".env")   # normal konum: new/.env
load_dotenv(Path(__file__).parent / ".env", override=False)  # sunucu geçici konum

DSN = os.environ["DATABASE_URL"]
_base = Path(__file__).parent
MIGRATIONS_DIR = (_base.parent / "migrations") if (_base.parent / "migrations").exists() else (_base / "migrations")


def run():
    with psycopg.connect(DSN) as conn:
        conn.execute("""
            CREATE TABLE IF NOT EXISTS schema_migrations (
                filename   TEXT PRIMARY KEY,
                applied_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
            )
        """)
        conn.commit()

        applied = {row[0] for row in conn.execute("SELECT filename FROM schema_migrations")}

        files = sorted(f for f in MIGRATIONS_DIR.glob("*.sql") if f.name not in applied)

        if not files:
            print("Uygulanacak migration yok.")
            return

        for f in files:
            print(f"  → {f.name} ...", end=" ", flush=True)
            sql = f.read_text(encoding="utf-8")
            conn.execute(sql)
            conn.execute("INSERT INTO schema_migrations (filename) VALUES (%s)", (f.name,))
            conn.commit()
            print("OK")


if __name__ == "__main__":
    run()