"""BenchFlow 评测执行、完整性判断与恢复。"""

from __future__ import annotations

import json
from pathlib import Path
import subprocess
import sys
from typing import Any
import uuid

from scripts.dynamic_compile.fast.storage import sha256_file

from .manifest import read_json_object
from .paths import PROJECT_ROOT


EVALUATION_SCRIPT = PROJECT_ROOT / "scripts" / "evaluate" / "run-raw-task.sh"
MAX_PARALLEL = 3


def evaluation_artifacts_complete(test_dir: Path) -> bool:
    """Return whether one BenchFlow attempt has all required usable artifacts."""
    summary = read_json_object(test_dir / "summary.json")
    required_skill = read_json_object(test_dir / "required-skill.json")
    if summary is None or required_skill is None:
        return False
    try:
        total = int(summary.get("total", 0) or 0)
        passed = int(summary.get("passed", summary.get("pass", 0)) or 0)
        failed = int(summary.get("failed", summary.get("fail", 0)) or 0)
        errored = int(summary.get("errored", summary.get("error", 0)) or 0)
        verifier_errored = int(summary.get("verifier_errored", 0) or 0)
    except (TypeError, ValueError):
        return False
    if total != 1 or passed + failed != 1 or errored or verifier_errored:
        return False
    if required_skill.get("invoked") is not True or required_skill.get("parse_errors"):
        return False
    trajectories = sorted(test_dir.rglob("acp_trajectory.jsonl"))
    canonical = [path for path in trajectories if "trajectory" in path.parts]
    trajectory = canonical[0] if canonical else (trajectories[0] if trajectories else None)
    if trajectory is None:
        return False
    result = read_json_object(trajectory.parent.parent / "result.json")
    if result is None:
        return False
    try:
        events = [
            json.loads(line)
            for line in trajectory.read_text(encoding="utf-8").splitlines()
            if line.strip()
        ]
    except (OSError, json.JSONDecodeError):
        return False
    return bool(events) and all(isinstance(event, dict) for event in events)


def completed_evaluation_count(output: Path) -> int:
    if not output.is_dir():
        return 0
    return sum(
        evaluation_artifacts_complete(test_dir)
        for test_dir in output.glob("test-*")
        if test_dir.is_dir()
    )


def quarantine_incomplete_evaluations(output: Path) -> int:
    if not output.is_dir():
        return 0
    incomplete = [
        test_dir
        for test_dir in sorted(output.glob("test-*"))
        if test_dir.is_dir() and not evaluation_artifacts_complete(test_dir)
    ]
    if not incomplete:
        return 0
    quarantine = output / ".incomplete"
    quarantine.mkdir(exist_ok=True)
    for test_dir in incomplete:
        destination = quarantine / test_dir.name
        if destination.exists():
            destination = quarantine / f"{test_dir.name}-{uuid.uuid4().hex[:6]}"
        test_dir.replace(destination)
        print(
            f"[compile-pipeline] preserved incomplete evaluation at {destination}",
            file=sys.stderr,
            flush=True,
        )
    return len(incomplete)


def evaluate(
    *,
    harness: str,
    model: str,
    task_dir: Path,
    skill_source: Path,
    output: Path,
    repeat: int,
) -> None:
    completed = completed_evaluation_count(output)
    if completed >= repeat:
        print(
            f"[compile-pipeline] evaluation complete: {output} ({completed}/{repeat}); skipping",
            file=sys.stderr,
            flush=True,
        )
        return
    quarantine_incomplete_evaluations(output)
    missing = repeat - completed
    if completed:
        print(
            f"[compile-pipeline] evaluation incomplete: {output} "
            f"({completed}/{repeat}); running {missing} missing rollout(s)",
            file=sys.stderr,
            flush=True,
        )
    command = [
        "bash", str(EVALUATION_SCRIPT), "--harness", harness, "--model", model,
        "--task", str(task_dir), "--skill-source", str(skill_source), "--output", str(output),
        "--require-skill", "--repeat", str(missing), "--max-parallel", str(MAX_PARALLEL),
    ]
    try:
        subprocess.run(command, cwd=PROJECT_ROOT, check=True)
    except subprocess.CalledProcessError as exc:
        raise RuntimeError(
            f"evaluation failed for {skill_source} with exit code {exc.returncode}"
        ) from exc
    completed = completed_evaluation_count(output)
    if completed < repeat:
        raise RuntimeError(
            f"evaluation produced only {completed}/{repeat} complete rollout artifacts "
            f"under {output}"
        )


def complete_deep_skill(output: Path) -> Path | None:
    state = read_json_object(output / "run.json")
    report = read_json_object(output / "report.json")
    skill = output / "S_final"
    if (
        state is not None and state.get("status") == "complete"
        and report is not None and report.get("status") == "complete"
        and (skill / "SKILL.md").is_file()
    ):
        return skill
    return None


def deep_final_rollouts(output: Path, final_skill: Path, repeat: int) -> Path | None:
    report = read_json_object(output / "report.json")
    if report is None:
        return None
    value = report.get("final_rollouts")
    expected_hash = report.get("final_rollout_skill_sha256")
    if not isinstance(value, str) or not isinstance(expected_hash, str):
        return None
    rollouts = Path(value).resolve()
    if (
        not rollouts.is_dir() or expected_hash != sha256_file(final_skill / "SKILL.md")
        or completed_evaluation_count(rollouts) < repeat
    ):
        return None
    return rollouts