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"""Classify screen episodes into the pilot's failure categories.

Each failed episode gets one primary category, decided in this order:
  invalid_action  the reply was not one valid JSON action (malformed JSON, escaping, schema), or an
                  over-long reply was cut while budget remained
  budget          the completion/context budget or the call cap ended the episode
  missing_output  the episode ended normally but the output file did not exist
  bad_structure   the file exists but does not parse or has the wrong keys/header/types
  wrong_code      repair tasks: the file is structurally fine but the code fails the checks
  wrong_answer    other tasks: structurally fine, wrong values
  grader_defect   the saved files pass a local regrade although the episode scored 0
The output's state at the end is reported for every episode as well, whatever ended it.

Usage: PYTHONPATH=. .venv/bin/python tools/classify.py runs/pilot-4x/records.jsonl
"""

import ast
import collections
import csv
import io
import json
import os
import random
import sys
import tempfile

sys.path.insert(0, ".")
os.environ.setdefault("TERMINAL_DESK_APP", tempfile.mkdtemp(prefix="td-cls-"))
from terminal_desk.families import ALL_FAMILIES, FAMILIES, instance_seed, parse_task_id  # noqa: E402

BUDGET = 4096
MISSING = "@@MISSING@@"

JSON_KEYS = {
    "ev_backorder": {"backordered"},
    "tx_events": {"counts", "errors", "skipped"},
    "plan_load": {"items", "total_value", "total_weight_kg"},
}
CSV_HEADERS = {
    "ev_calibration": ["sample_id", "instrument_id", "run_date"],
    "cmp_channels": ["channel", "total_hours", "weighted_minutes"],
    "cmp_rainfall": ["station", "total_mm", "wet_days", "mean_mm_per_wet_day"],
    "plan_shifts": ["shift_id", "staff"],
}


def structure_ok(family: str, text: str, path: str = "") -> bool:
    if family not in CSV_HEADERS and family not in JSON_KEYS and family not in ("fix_toolkit", "tx_contacts", "fix_report"):
        # Reserved and newer tasks: structure by file type only (values are judged by the regrade).
        try:
            if path.endswith(".csv"):
                from terminal_desk.families.util import parse_csv_strict
                return parse_csv_strict(text) is not None
            if path.endswith(".json"):
                json.loads(text)
                return True
            if path.endswith(".py"):
                ast.parse(text)
                return True
        except (ValueError, SyntaxError):
            return False
        return bool(text.strip())
    try:
        if family in CSV_HEADERS:
            header = next(csv.reader(io.StringIO(text)))
            return [h.strip() for h in header] == CSV_HEADERS[family]
        if family == "fix_toolkit":
            ast.parse(text)
            return True
        value = json.loads(text)
        if family in JSON_KEYS:
            return isinstance(value, dict) and set(value) == JSON_KEYS[family]
        if family == "tx_contacts":
            keys = {"id", "name", "email", "tags", "active"}
            return isinstance(value, list) and all(isinstance(v, dict) and set(v) == keys for v in value)
        if family == "fix_report":
            return isinstance(value, dict) and all(isinstance(v, dict) for v in value.values())
    except (ValueError, StopIteration, SyntaxError):
        return False
    return True


def regrade(task_id: str, snapshot: dict) -> bool:
    fid, level, _ = parse_task_id(task_id)
    built = ALL_FAMILIES[fid].build(level, random.Random(instance_seed(task_id)))
    app = tempfile.mkdtemp(prefix="td-regrade-")
    for path, text in snapshot.items():
        full = os.path.join(app, path)
        os.makedirs(os.path.dirname(full), exist_ok=True)
        with open(full, "w") as fh:
            fh.write(text + ("" if text.endswith("\n") else "\n"))
    try:
        return bool(built.artifact.verify(app))
    except Exception:
        return False


def output_state(rec: dict) -> str:
    family = rec["task_id"].split("-L")[0]
    snap = rec.get("snapshot") or {}
    fid, level, _ = parse_task_id(rec["task_id"])
    path = ALL_FAMILIES[fid].build(level, random.Random(instance_seed(rec["task_id"]))).artifact.path
    text = snap.get(path)
    if text is None:
        return "unknown"
    if text.strip() == MISSING:
        return "missing"
    if not structure_ok(family, text, path):
        return "bad_structure"
    if rec["reward"] == 1.0:
        return "correct"
    return "passes_regrade" if regrade(rec["task_id"], {p: t for p, t in snap.items() if t.strip() != MISSING}) else "wrong"


def classify(rec: dict) -> tuple[str, str]:
    state = output_state(rec)
    if rec["reward"] == 1.0:
        return "solved", state
    ended = rec["ended"]
    if ended in ("invalid_reply", "invalid_action"):
        return "invalid_action", state
    if ended == "truncated":
        return ("budget" if rec["completion_spent"] >= BUDGET - 16 else "invalid_action"), state
    if ended in ("budget", "context", "cap"):
        return "budget", state
    if state == "passes_regrade":
        return "grader_defect", state
    if state == "missing":
        return "missing_output", state
    if state == "bad_structure":
        return "bad_structure", state
    family = rec["task_id"].split("-L")[0]
    return ("wrong_code" if family.startswith("fix_") else "wrong_answer"), state


def main() -> None:
    recs = [json.loads(line) for line in open(sys.argv[1])]
    per_task = collections.defaultdict(list)
    totals = collections.Counter()
    for r in recs:
        cat, state = classify(r)
        per_task[r["task_id"]].append((cat, state, r["ended"], r["steps"], r["completion_spent"]))
        totals[cat] += 1
    for task, eps in per_task.items():
        solved = sum(c == "solved" for c, *_ in eps)
        print(f"{task:18} {solved}/{len(eps)}  " + "  ".join(f"{c}[{s},{e},{n}st,{sp}t]" for c, s, e, n, sp in eps))
    print("\ntotals:", dict(totals))


if __name__ == "__main__":
    main()