from __future__ import annotations

import argparse
import json
from pathlib import Path

from app.db.bootstrap import create_all_tables
from app.db.session import SessionLocal
from app.mailer.reports.campaigns import CampaignReportError, generate_campaign_report, generate_jobs_csv
from app.security.api_keys import authenticate_api_key
from app.settings import settings


def _print_text_report(report: dict) -> None:
    campaign = report["campaign"]
    cards = report["cards"]
    delivery = report["delivery"]
    print(f"Campaign: {campaign['name']} ({campaign['id']})")
    print(f"Status:   {campaign['status']}")
    print(f"Jobs:     {cards['jobs_total']} total | {cards['queueable']} queueable | {cards['needs_attention']} need attention")
    print(f"Sending:  {cards['sent']} sent | {cards['failed']} failed")
    print(f"IMAP:     {cards['imap_appended']} appended | {cards['imap_failed']} failed")
    if delivery.get("rate_limit", {}).get("messages_per_minute"):
        print(
            "Rate:     "
            f"{delivery['rate_limit']['messages_per_minute']}/min, concurrency {delivery['rate_limit']['concurrency']}"
        )
    if delivery.get("estimated_remaining_send_human"):
        print(f"ETA:      {delivery['estimated_remaining_send_human']}")
    print("Validation counts:", report["status_counts"]["validation"])
    print("Send counts:      ", report["status_counts"]["send"])
    print("Issue codes:      ", report["issues"]["by_code"])
    print("Attachments:      ", report["attachments"])
    failures = report.get("recent_failures") or []
    if failures:
        print("Recent failures:")
        for failure in failures[:10]:
            print(
                f"  - entry={failure['entry_index']} recipient={failure['recipient_email']} "
                f"send={failure['send_status']} imap={failure['imap_status']} error={failure['last_error']}"
            )


def main() -> None:
    parser = argparse.ArgumentParser(description="Generate a campaign status/report payload.")
    parser.add_argument("--campaign-id", required=True, help="Database campaign UUID")
    parser.add_argument("--api-key", default=settings.dev_bootstrap_api_key)
    parser.add_argument("--json", action="store_true", help="Print machine-readable JSON")
    parser.add_argument("--include-jobs", action="store_true", help="Include per-job rows in JSON output")
    parser.add_argument("--jobs-csv", help="Write per-job report CSV to this path")
    args = parser.parse_args()

    create_all_tables()
    with SessionLocal() as session:
        api_key = authenticate_api_key(session, args.api_key)
        if not api_key:
            raise SystemExit("Invalid API key")
        try:
            report = generate_campaign_report(
                session,
                tenant_id=api_key.tenant_id,
                campaign_id=args.campaign_id,
                include_jobs=args.include_jobs,
            )
            if args.jobs_csv:
                csv_text = generate_jobs_csv(session, tenant_id=api_key.tenant_id, campaign_id=args.campaign_id)
                Path(args.jobs_csv).write_text(csv_text, encoding="utf-8")
                print(f"Wrote {args.jobs_csv}")
            if args.json:
                print(json.dumps(report, indent=2, ensure_ascii=False, default=str))
            else:
                _print_text_report(report)
        except CampaignReportError as exc:
            raise SystemExit(str(exc)) from exc


if __name__ == "__main__":
    main()