"""Reconcile stale ``metadata_extraction_status='pending'`` rows (G1).

The column defaults to 'pending', but only ``source_kind='external_upload'``
rows with extractable text genuinely need the Gemini metadata drain. Internal
committee decisions carry deterministic metadata (never Gemini) and cited_only
stubs have no text to extract — both linger forever as phantom backlog that the
drain (which scans ``metadata_extraction_requested_at IS NOT NULL``) can never
clear, inflating the /operations "ממתין" counter.

This settles each row to a truthful terminal state at the source:
  - internal_committee  → 'completed' (metadata is deterministic, out of Gemini pipeline)
  - external_upload w/ name+summary → 'completed' (already filled)
  - external_upload w/ text but missing name/summary → stamp requested_at (real work → drain picks it up)
  - cited_only (no text) → 'skipped' (terminal; nothing to extract)

Idempotent and re-runnable (a healthy DB reports all-zero). The companion source
fix lives in db.create_internal_committee_decision (inserts 'completed' directly)
so internal rows never re-enter this state.

Host-only (reads POSTGRES_URL from ~/.env via legal_mcp.config). Run by hand:
    mcp-server/.venv/bin/python scripts/reconcile_metadata_status.py
"""

import asyncio
import os
import sys

sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "mcp-server", "src"))

from legal_mcp.services import db


async def main() -> int:
    pool = await db.get_pool()

    internal = await pool.execute(
        "UPDATE case_law SET metadata_extraction_status = 'completed' "
        "WHERE source_kind = 'internal_committee' "
        "AND metadata_extraction_status = 'pending'"
    )
    external_done = await pool.execute(
        "UPDATE case_law SET metadata_extraction_status = 'completed' "
        "WHERE source_kind = 'external_upload' "
        "AND metadata_extraction_status = 'pending' "
        "AND coalesce(case_name, '') <> '' AND coalesce(summary, '') <> ''"
    )
    external_requeued = await pool.execute(
        "UPDATE case_law SET metadata_extraction_requested_at = now() "
        "WHERE source_kind = 'external_upload' "
        "AND metadata_extraction_status = 'pending' "
        "AND coalesce(full_text, '') <> '' "
        "AND (coalesce(case_name, '') = '' OR coalesce(summary, '') = '') "
        "AND metadata_extraction_requested_at IS NULL"
    )
    cited = await pool.execute(
        "UPDATE case_law SET metadata_extraction_status = 'skipped' "
        "WHERE source_kind = 'cited_only' "
        "AND metadata_extraction_status = 'pending'"
    )

    def n(tag: str) -> str:
        try:
            return tag.split()[-1]
        except (AttributeError, IndexError):
            return "?"

    print(f"internal_committee  → completed : {n(internal)}")
    print(f"external_upload     → completed : {n(external_done)}")
    print(f"external_upload     → requeued  : {n(external_requeued)}")
    print(f"cited_only          → skipped   : {n(cited)}")

    rows = await pool.fetch(
        "SELECT coalesce(metadata_extraction_status,'NULL') s, count(*) n "
        "FROM case_law GROUP BY 1 ORDER BY 2 DESC"
    )
    print("\nresulting metadata_extraction_status distribution:")
    for r in rows:
        print(f"  {r['s']:<12} {r['n']}")
    return 0


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