"""BehaviorDetector — v12.

Only used in stage 04 to *count* reflection markers in generated CoTs
(for evaluation). NOT used to learn the direction — v12 uses
contrastive prompting in stage 00 instead.
"""
import re
from typing import Dict, List


class BehaviorDetector:
    def __init__(self, config):
        self.name = config.NAME
        self.raw_patterns = config.PATTERNS
        self.compiled: Dict[str, List[re.Pattern]] = {
            ptype: [re.compile(p) for p in patterns]
            for ptype, patterns in self.raw_patterns.items()
        }

    def detect(self, text: str) -> Dict:
        result = {"total": 0, "by_type": {}, "spans": []}
        for ptype, patterns in self.compiled.items():
            count = 0
            for pat in patterns:
                for m in pat.finditer(text):
                    count += 1
                    result["spans"].append({
                        "type":    ptype,
                        "start":   m.start(),
                        "end":     m.end(),
                        "matched": m.group(0)[:60],
                    })
            result["by_type"][ptype] = count
            result["total"] += count
        result["spans"].sort(key=lambda s: s["start"])
        return result