#!/usr/bin/env python3
"""Pipeline health check CLI runner.

Exit codes:
  0 = all healthy
  1 = any warning
  2 = any critical
"""

import argparse
import json
import sys

import duckdb

from config import config
from health import run_checks
from health.checks import check_embedding_coverage, check_llm_coverage, check_motion_freshness


def main() -> int:
    parser = argparse.ArgumentParser(description="Check pipeline health")
    parser.add_argument(
        "--format",
        choices=["text", "json"],
        default="text",
        help="Output format",
    )
    parser.add_argument(
        "--threshold-days",
        type=int,
        default=7,
        help="Max age in days for motion freshness check",
    )
    parser.add_argument(
        "--min-embed-coverage",
        type=float,
        default=0.95,
        help="Minimum embedding coverage ratio",
    )
    parser.add_argument(
        "--max-missing-llm",
        type=float,
        default=0.15,
        help="Maximum missing layman explanation ratio",
    )
    args = parser.parse_args()

    try:
        conn = duckdb.connect(config.DATABASE_PATH)
    except Exception as e:
        print(f"CRITICAL: Could not connect to database: {e}", file=sys.stderr)
        return 2

    checks = [
        check_motion_freshness(conn, max_age_days=args.threshold_days),
        check_embedding_coverage(conn, min_coverage=args.min_embed_coverage),
        check_llm_coverage(conn, max_missing_ratio=args.max_missing_llm),
    ]

    report = run_checks(checks)

    if args.format == "json":
        output = {
            "status": report.status.value,
            "exit_code": report.exit_code,
            "checks": [
                {
                    "name": c.name,
                    "status": c.status.value,
                    "message": c.message,
                    "details": c.details,
                }
                for c in report.checks
            ],
        }
        print(json.dumps(output, indent=2))
    else:
        status_emoji = {"ok": "✅", "warning": "⚠️", "critical": "❌"}
        print(f"Health Report: {status_emoji.get(report.status.value, '?')} {report.status.value.upper()}")
        print("-" * 50)
        for check in report.checks:
            emoji = status_emoji.get(check.status.value, "?")
            print(f"{emoji} {check.name}: {check.message}")
            if check.details:
                for key, value in check.details.items():
                    print(f"   {key}: {value}")

    try:
        conn.close()
    except Exception:
        pass

    return report.exit_code


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