#!/usr/bin/env python3
"""Initialize (or upgrade) the D3 financial schema on an explicit local database — idempotent.

Creates the D3 tables on the shared D2 SQLite database and ensures a tenant's system ledger
accounts. Never seeds balances or merchants merely because it runs. Requires --confirm-d3.

Example:
  python scripts/d3_initialize_finance.py --db-path /tmp/amanpay-d2/amanpay.db --tenant event \
      --confirm-d3 --allow-unknown-fs --json
"""

from __future__ import annotations

import argparse
import sys

from amanpay.finance.chart_of_accounts import ensure_system_accounts
from amanpay.finance.cli import (add_common_args, build_runtime_for_cli, emit, resolve_tenant_id)
from amanpay.finance.storage.store import d3_schema_version


def main(argv=None) -> int:
    p = argparse.ArgumentParser(description="Initialize the D3 financial schema (idempotent).")
    add_common_args(p, tenant_required=False)
    p.add_argument("--confirm-d3", action="store_true", required=True,
                   help="explicit confirmation to create/upgrade D3 tables")
    args = p.parse_args(argv)

    rt = build_runtime_for_cli(args.db_path, allow_unknown_fs=args.allow_unknown_fs)
    out = {"db_path": args.db_path, "d3_schema_version": d3_schema_version(rt.store),
           "journal_mode": rt.store.runtime_report().get("journal_mode")}
    if args.tenant:
        tid = resolve_tenant_id(rt, args.tenant)
        if tid is None:
            # Schema init (the primary job) still succeeded; system accounts need an existing
            # tenant (created via the D2 CLIs / seed). Report and continue — not a hard error.
            out["tenant_status"] = "not_found"
            out["system_accounts"] = 0
        else:
            created = ensure_system_accounts(rt.repo, tid)
            out["tenant_id"] = tid
            out["tenant_status"] = "ok"
            out["system_accounts"] = len(created)
    out["ok"] = True
    emit(out, as_json=args.json)
    rt.close()
    return 0


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