#!/usr/bin/env python3
"""
Sync `is_generic` flag from each entity YAML to public.entities table.
"""
from __future__ import annotations
import os
import sys
from pathlib import Path

import psycopg
import yaml

WIKI_ENT = Path("/Users/guto/ufo/wiki/entities")


def main() -> int:
    dburl = os.environ.get("DATABASE_URL") or os.environ.get("SUPABASE_DB_URL")
    if not dburl: sys.exit("DATABASE_URL not set")

    rows: list[tuple[str, str, bool]] = []
    for f in WIKI_ENT.rglob("*.md"):
        if "_archived" in f.parts: continue
        try:
            text = f.read_text(encoding="utf-8")
            if not text.startswith("---"): continue
            fm = yaml.safe_load(text.split("---")[1]) or {}
        except Exception: continue
        cls = fm.get("entity_class")
        eid = fm.get("entity_id") or (fm.get(f"{cls}_id") if cls else None)
        if not (cls and eid): continue
        rows.append((cls, eid, bool(fm.get("is_generic"))))

    print(f"Loaded {len(rows)} entities from YAML")

    with psycopg.connect(dburl) as conn:
        with conn.cursor() as cur:
            cur.execute("CREATE TEMP TABLE _gen (entity_class TEXT, entity_id TEXT, is_generic BOOL)")
            with cur.copy("COPY _gen (entity_class, entity_id, is_generic) FROM STDIN") as cp:
                for row in rows: cp.write_row(row)
            cur.execute("""
                UPDATE entities e SET is_generic = g.is_generic
                FROM _gen g
                WHERE e.entity_class = g.entity_class
                  AND e.entity_id = g.entity_id
                  AND e.is_generic IS DISTINCT FROM g.is_generic
            """)
            print(f"  rows updated: {cur.rowcount}")
            cur.execute("SELECT COUNT(*) FROM entities WHERE is_generic")
            print(f"  total is_generic=TRUE in DB: {cur.fetchone()[0]}")
        conn.commit()
    return 0


if __name__ == "__main__":
    sys.exit(main())