"""Harvest a run's runtime artifacts into a scrubbed test corpus (V2-M0A).

Reads the 13 runtime artifacts of one run via the RuntimeStore interface
(LocalRuntimeFileStore for on-disk runs, DatabaseRuntimeStore for the production
DB) and writes a SCRUBBED copy under tests/fixtures/cases/{case_id}/input/ for
offline replay (see tests/replay_harness.py).

Scrubbing: the on-disk / DB artifacts are NOT guaranteed secret-free
(LocalRuntimeFileStore does not enforce FORBIDDEN_RAW_PAYLOAD_KEYS), so this tool
masks every value whose KEY is sensitive — recursively — before the corpus is
committed. The key set extends FORBIDDEN_RAW_PAYLOAD_KEYS with platform
identifiers (sec_uid / account_id) and signed media URLs.

Usage:
    python scripts/harvest_case_corpus.py --run-id v1_run_xxx --from files --case-id smoke_local
    python scripts/harvest_case_corpus.py --run-id v1_run_xxx --from db --case-id real_id45 --env-file .env
Exit 0 on success (corpus written + scrub self-check clean), 1 otherwise.
"""

from __future__ import annotations

import argparse
import json
import sys
from pathlib import Path
from typing import Any

ROOT = Path(__file__).resolve().parents[1]
if str(ROOT) not in sys.path:
    sys.path.insert(0, str(ROOT))

from content_agent.integrations.database_runtime import FORBIDDEN_RAW_PAYLOAD_KEYS
from content_agent.integrations.runtime_files import RUNTIME_FILENAMES, LocalRuntimeFileStore

CASES_DIR = ROOT / "tests" / "fixtures" / "cases"
JSON_FILES = {"source_context.json", "pattern_seed_pack.json", "final_output.json", "strategy_review.json"}
PLACEHOLDER = "<scrubbed>"

# Sensitive KEY names: DB-backend blocklist + platform identifiers + signed URLs.
SCRUB_KEYS = {key.lower() for key in FORBIDDEN_RAW_PAYLOAD_KEYS} | {
    "sec_uid",
    "account_id",
    "author_id",
    "play_url",
    "oss_url",
    "platform_author_id",
}


def _is_secret_value(value: Any) -> bool:
    """Douyin sec_uid values leak into non-sensitive keys (e.g. walk node ids)."""
    return isinstance(value, str) and value.startswith("MS4w") and len(value) > 20


def scrub(obj: Any) -> Any:
    """Recursively mask sensitive values by key name or value pattern."""
    if isinstance(obj, dict):
        return {
            key: (PLACEHOLDER if str(key).lower() in SCRUB_KEYS else scrub(value))
            for key, value in obj.items()
        }
    if isinstance(obj, list):
        return [scrub(value) for value in obj]
    if _is_secret_value(obj):
        return PLACEHOLDER
    return obj


def find_forbidden(obj: Any, path: str = "") -> list[str]:
    """Return key paths still holding a sensitive (unmasked) value."""
    hits: list[str] = []
    if isinstance(obj, dict):
        for key, value in obj.items():
            here = f"{path}.{key}"
            if str(key).lower() in SCRUB_KEYS and value != PLACEHOLDER:
                hits.append(here)
            hits.extend(find_forbidden(value, here))
    elif isinstance(obj, list):
        for index, value in enumerate(obj):
            hits.extend(find_forbidden(value, f"{path}[{index}]"))
    elif _is_secret_value(obj):
        hits.append(path)
    return hits


def harvest(run_id: str, store: Any) -> dict[str, Any]:
    """Read every present runtime artifact of a run via the store interface."""
    status = store.file_status(run_id)
    artifacts: dict[str, Any] = {}
    for filename in RUNTIME_FILENAMES:
        if not status.get(filename):
            continue
        if filename in JSON_FILES:
            artifacts[filename] = store.read_json(run_id, filename)
        else:
            artifacts[filename] = store.read_jsonl(run_id, filename)
    return artifacts


def write_corpus(case_id: str, artifacts: dict[str, Any]) -> Path:
    dest = CASES_DIR / case_id / "input"
    dest.mkdir(parents=True, exist_ok=True)
    for filename, data in artifacts.items():
        scrubbed = scrub(data)
        (dest / filename).write_text(
            json.dumps(scrubbed, ensure_ascii=False, indent=2) + "\n", encoding="utf-8"
        )
    return dest


def _store(source: str, env_file: str) -> Any:
    if source == "files":
        return LocalRuntimeFileStore(ROOT / "runtime" / "v1")
    from content_agent.integrations.database_runtime import (
        ContentSupplyDbConfig,
        DatabaseRuntimeStore,
    )

    return DatabaseRuntimeStore(ContentSupplyDbConfig.from_env(env_file))


def main() -> int:
    args = _parse_args()
    store = _store(args.source, args.env_file)
    artifacts = harvest(args.run_id, store)
    if not artifacts:
        print(json.dumps({"status": "fail", "reason": "no_artifacts", "run_id": args.run_id}))
        return 1
    dest = write_corpus(args.case_id, artifacts)

    # Self-check: corpus must be free of sensitive values.
    leaks: dict[str, list[str]] = {}
    for filename in artifacts:
        data = json.loads((dest / filename).read_text(encoding="utf-8"))
        hits = find_forbidden(data)
        if hits:
            leaks[filename] = hits
    result = {
        "status": "fail" if leaks else "pass",
        "case_id": args.case_id,
        "run_id": args.run_id,
        "files": sorted(artifacts),
        "corpus_dir": str(dest.relative_to(ROOT)),
        "leaks": leaks,
    }
    print(json.dumps(result, ensure_ascii=False, indent=2))
    return 1 if leaks else 0


def _parse_args() -> argparse.Namespace:
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("--run-id", required=True)
    parser.add_argument("--from", dest="source", choices=["files", "db"], default="files")
    parser.add_argument("--case-id", required=True)
    parser.add_argument("--env-file", default=".env")
    return parser.parse_args()


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