"""Unified data format definitions for MetaMem."""

from dataclasses import dataclass, field, asdict
from typing import Optional


@dataclass
class UserSession:
    """A single conversation session."""
    session_id: str
    timestamp: str
    turns: list  # list of {"role": str, "content": str, optional "has_answer": bool}


@dataclass
class MemoryBankRecord:
    """A session-level memory record for retrieval."""
    id: str
    source_session_id: str
    content: str
    timestamp: str


@dataclass
class Query:
    """A user memory query with annotations."""
    id: str
    query: str
    answer: str
    evidence_session_ids: list
    query_type: str
    ms_label: Optional[str] = None
    rewrite_query: Optional[str] = None


@dataclass
class UserData:
    """Complete data package for one user."""
    user_id: str
    user_sessions: list  # list of UserSession (serialized as dicts)
    memory_bank: list    # list of MemoryBankRecord (serialized as dicts)
    queries: list        # list of Query (serialized as dicts)

    def to_dict(self) -> dict:
        return asdict(self)

    @classmethod
    def from_dict(cls, d: dict) -> "UserData":
        return cls(
            user_id=d["user_id"],
            user_sessions=d["user_sessions"],
            memory_bank=d["memory_bank"],
            queries=d["queries"],
        )


@dataclass
class FIRPrediction:
    """FIR probing result for one query."""
    user_id: str
    query_id: str
    query: str
    gold_answer: str
    predictions: list  # list of str
    model_name: str
    lora_path: str
    temperature: float
    num_samples: int


@dataclass
class MSLabel:
    """Memory state label from multi-teacher judgment."""
    query_id: str
    ms_label: str          # SM/PM/VM/NM
    agreement: float       # teacher agreement ratio
    final_confidence: float
    sample_weight: float
    status: str            # UNANIMOUS/MAJORITY/AMBIGUOUS
    teacher_results: list  # raw results from each teacher


@dataclass
class RewriteQuery:
    """Rewrite query result from multi-teacher generation."""
    query_id: str
    rewrite_query: str
    ms_label: str
    best_rank: Optional[int] = None
    original_rank: Optional[int] = None
    source_teacher: Optional[str] = None
    all_teacher_rewrites: list = field(default_factory=list)
    validation_result: Optional[dict] = None