import json
import re
from collections import Counter, defaultdict
from pathlib import Path


ROOT = Path("/root/test/weitiao/data_process_bq")
INPUT = ROOT / "data" / "train_merged_dedup_shuffled_30001.json"
OUT_DIR = ROOT / "13052_style_issue_samples"


NARRATOR_PATTERNS = [
    r"\bas soon as\b",
    r"\bas they\b",
    r"\bas (he|she|it|you|we)\b",
    r"\b(months?|weeks?|days?|years?) (pass|passed|later)\b",
    r"\b(time passes|time passed)\b",
    r"\bthe next (morning|day|night|week)\b",
    r"\blater that\b",
    r"\beventually\b",
    r"\bafter a while\b",
    r"\bover the next\b",
    r"\bin the following\b",
    r"\bmeanwhile\b",
]

SCENE_JUMP_PATTERNS = [
    r"\b(knock|knocking|knocked) (at|on)\b",
    r"\bthe door (opens|opened|slams|slammed|bursts|burst)\b",
    r"\bphone (rings|rang|buzzes|buzzed)\b",
    r"\bmessage (arrives|arrived|pops|popped)\b",
    r"\bsuddenly\b",
    r"\bjust then\b",
    r"\bout of nowhere\b",
    r"\bflashback\b",
    r"\bremembers?\b",
    r"\bmemory\b",
    r"\b(hours?|days?|weeks?|months?) later\b",
    r"\bthe next (morning|day|night|week)\b",
]

CONTROL_SHIFT_PATTERNS = [
    r"\byou (nod|nodded|agree|agreed|follow|followed|step|stepped|walk|walked|sit|sat|stand|stood|take|took|accept|accepted|realize|realized|understand|understood|decide|decided|feel|felt|can't help but|cannot help but)\b",
    r"\byour (heart|breath|body|mind|thoughts|eyes|hands|lips|cheeks)\b",
    r"\byou (can't|cannot) resist\b",
    r"\byou let him\b",
    r"\byou let her\b",
    r"\byou find yourself\b",
    r"\bboth of you\b",
    r"\btogether, you\b",
]

FORMAT_MISMATCH_PATTERNS = [
    r"^\s*(with|after|as|while|when)\b",
    r"\b(washes over|a wave of|a surge of|couldn't help but|for a moment|in that moment)\b",
    r"\b(his|her|their) mind\b",
    r"\bthe weight of\b",
    r"\bthe air (is|was|grows|grew|hangs|hung)\b",
]

UNSAFE_PATTERNS = [
    r"\b(kill|murder|blood|gun|knife|shoot|shot|stab|weapon|execution|mafia|cartel|hostage|kidnap|torture|corpse|dead|death)\b",
    r"\b(suicide|self[- ]harm|cut myself|overdose)\b",
    r"\b(sex|cum|cock|pussy|dick|orgasm|naked|rape|raped|molest|blowjob|anal|thrust|clit|boobs)\b",
    r"\b(minor|underage|teen|schoolgirl|schoolboy)\b",
    r"\b(drug|cocaine|heroin|meth|overdose)\b",
]

NARRATOR_RE = [(pat, re.compile(pat, re.I)) for pat in NARRATOR_PATTERNS]
SCENE_JUMP_RE = [(pat, re.compile(pat, re.I)) for pat in SCENE_JUMP_PATTERNS]
CONTROL_SHIFT_RE = [(pat, re.compile(pat, re.I)) for pat in CONTROL_SHIFT_PATTERNS]
FORMAT_MISMATCH_RE = [(pat, re.compile(pat, re.I)) for pat in FORMAT_MISMATCH_PATTERNS]
UNSAFE_RE = [(pat, re.compile(pat, re.I)) for pat in UNSAFE_PATTERNS]
WORD_RE = re.compile(r"\b[\w']+\b")
THIRD_PERSON_RE = re.compile(r"\b(he|she|they|him|her|his|hers|their|the)\b", re.I)
YOU_RE = re.compile(r"\byou\b|\byour\b", re.I)
ACTION_RE = re.compile(
    r"^\s*[A-ZÁÉÍÓÚÄÖÜÑ][^.\n]{0,80}\s+"
    r"(nods|smiles|leans|steps|looks|says|asks|whispers|murmurs|growls|grins)\b",
    re.I,
)


def norm(text):
    return (text or "").replace("\r\n", "\n")


def text_of_message(msg):
    if isinstance(msg, dict):
        return norm(msg.get("value", ""))
    return norm(str(msg))


def regex_hits(compiled_patterns, text):
    hits = []
    for pat, rex in compiled_patterns:
        if rex.search(text):
            hits.append(pat)
    return hits


def quote_count(text):
    return text.count('"') + text.count("“") + text.count("”") + text.count("¿") + text.count("?")


def action_dialog_score(text):
    has_action = "*" in text or ACTION_RE.search(text)
    return int(bool(has_action)) + int(quote_count(text) >= 2)


def categories_for(text, other_text):
    words = WORD_RE.findall(text)
    word_count = max(len(words), 1)
    cats = {}

    narrator_hits = regex_hits(NARRATOR_RE, text)
    third_person = len(THIRD_PERSON_RE.findall(text))
    dialogue_sparse = quote_count(text) < 2
    longish = word_count >= 35
    if narrator_hits or (longish and dialogue_sparse and third_person / word_count > 0.08):
        cats["narrator_summary"] = {
            "hits": narrator_hits,
            "word_count": word_count,
            "quote_count": quote_count(text),
            "third_person_ratio": round(third_person / word_count, 3),
        }

    jump_hits = regex_hits(SCENE_JUMP_RE, text)
    if jump_hits:
        cats["scene_jump_new_event"] = {"hits": jump_hits}

    control_hits = regex_hits(CONTROL_SHIFT_RE, text)
    user_mentions = len(YOU_RE.findall(text))
    if control_hits or user_mentions >= 5:
        cats["role_control_shift"] = {
            "hits": control_hits,
            "you_your_count": user_mentions,
        }

    format_hits = regex_hits(FORMAT_MISMATCH_RE, text)
    other_action_dialog = action_dialog_score(other_text)
    this_action_dialog = action_dialog_score(text)
    if format_hits or (word_count >= 45 and dialogue_sparse and other_action_dialog > this_action_dialog):
        cats["tone_format_mismatch"] = {
            "hits": format_hits,
            "word_count": word_count,
            "quote_count": quote_count(text),
            "this_action_dialog_score": this_action_dialog,
            "other_action_dialog_score": other_action_dialog,
        }

    return cats


def safety_label(record, chosen_text, rejected_text):
    parts = []
    for msg in record.get("conversations", [])[-6:]:
        parts.append(text_of_message(msg))
    parts.extend([chosen_text, rejected_text])
    blob = "\n".join(parts)
    hits = regex_hits(UNSAFE_RE, blob)
    return ("unsafe_or_sensitive" if hits else "relatively_safe", hits[:12])


def context_tail(record, n=4):
    conv = record.get("conversations", [])
    return [
        {"from": m.get("from"), "value": text_of_message(m)}
        for m in conv[-n:]
        if isinstance(m, dict)
    ]


def main():
    OUT_DIR.mkdir(parents=True, exist_ok=True)
    with INPUT.open(encoding="utf-8") as f:
        data = json.load(f)

    files = {
        "narrator_summary": (OUT_DIR / "01_narrator_summary.jsonl").open("w", encoding="utf-8"),
        "scene_jump_new_event": (OUT_DIR / "02_scene_jump_new_event.jsonl").open("w", encoding="utf-8"),
        "role_control_shift": (OUT_DIR / "03_role_control_shift.jsonl").open("w", encoding="utf-8"),
        "tone_format_mismatch": (OUT_DIR / "04_tone_format_mismatch.jsonl").open("w", encoding="utf-8"),
        "all": (OUT_DIR / "all_flagged.jsonl").open("w", encoding="utf-8"),
    }

    category_counts = Counter()
    side_counts = Counter()
    safety_total = Counter()
    safety_flagged = Counter()
    safety_by_category = defaultdict(Counter)
    overlap_counts = Counter()

    for idx, record in enumerate(data):
        chosen_text = text_of_message(record.get("chosen", {}))
        rejected_text = text_of_message(record.get("rejected", {}))
        label, safety_hits = safety_label(record, chosen_text, rejected_text)
        safety_total[label] += 1

        per_record_categories = set()
        for side, text, other in [
            ("chosen", chosen_text, rejected_text),
            ("rejected", rejected_text, chosen_text),
        ]:
            cats = categories_for(text, other)
            if not cats:
                continue
            item = {
                "index": idx,
                "side": side,
                "categories": cats,
                "safety_label": label,
                "safety_hits": safety_hits,
                "context_tail": context_tail(record),
                "response": text,
                "other_response": other,
            }
            line = json.dumps(item, ensure_ascii=False)
            files["all"].write(line + "\n")
            side_counts[side] += 1
            safety_flagged[label] += 1
            for cat in cats:
                files[cat].write(line + "\n")
                category_counts[cat] += 1
                safety_by_category[cat][label] += 1
                per_record_categories.add(cat)
        if per_record_categories:
            overlap_counts[len(per_record_categories)] += 1

    for f in files.values():
        f.close()

    summary = {
        "input": str(INPUT),
        "output_dir": str(OUT_DIR),
        "records": len(data),
        "category_counts_candidate_level": dict(category_counts),
        "flagged_side_counts": dict(side_counts),
        "safety_total_record_level": dict(safety_total),
        "safety_flagged_candidate_level": dict(safety_flagged),
        "safety_by_category_candidate_level": {k: dict(v) for k, v in safety_by_category.items()},
        "record_category_overlap_counts": dict(overlap_counts),
        "notes": [
            "The source has no model-id field, so flagged_side is chosen/rejected, not a confirmed 13052 label.",
            "Safety labels are heuristic keyword labels over context plus both candidate responses.",
            "Counts are candidate-level for flagged outputs unless the key says record-level.",
        ],
    }
    (OUT_DIR / "summary.json").write_text(
        json.dumps(summary, ensure_ascii=False, indent=2), encoding="utf-8"
    )

    md = [
        "# 13052 Style Issue Extraction",
        "",
        f"Input: `{INPUT}`",
        f"Records: {len(data)}",
        "",
        "## Output files",
        "",
        "- `01_narrator_summary.jsonl`: 旁白总结/复述剧情感",
        "- `02_scene_jump_new_event.jsonl`: 跳场景/新增事件",
        "- `03_role_control_shift.jsonl`: 替用户推进/控制用户动作或心理",
        "- `04_tone_format_mismatch.jsonl`: 语气和格式更像小说叙述，互动弱",
        "- `all_flagged.jsonl`: 所有命中候选",
        "- `summary.json`: 统计信息",
        "",
        "## Candidate-level counts",
        "",
    ]
    for cat, cnt in category_counts.most_common():
        md.append(f"- {cat}: {cnt}")
    md.extend(["", "## Safety heuristic", ""])
    for label, total in safety_total.items():
        flagged = safety_flagged.get(label, 0)
        rate = flagged / total if total else 0
        md.append(f"- {label}: records={total}, flagged_candidates={flagged}, flagged_candidates_per_record={rate:.3f}")
    md.extend(["", "## Caveats", ""])
    md.extend(f"- {note}" for note in summary["notes"])
    (OUT_DIR / "README.md").write_text("\n".join(md) + "\n", encoding="utf-8")

    print(json.dumps(summary, ensure_ascii=False, indent=2))


if __name__ == "__main__":
    main()