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"""
Pydantic models β€” LINE Webhook Payload
ΰΈ„ΰΈ£ΰΈ­ΰΈšΰΈ„ΰΈ₯ΰΈΈΰΈ‘ event types ΰΈ—ΰΈ΅ΰΉˆΰΈˆΰΈ³ΰΉ€ΰΈ›ΰΉ‡ΰΈ™ΰΈͺำหรับ chat conversation
"""

from typing import Optional, Literal
from pydantic import BaseModel


# ─── Source ───────────────────────────────────────────────────────────────────

class LineSource(BaseModel):
    type: Literal["user", "group", "room"]
    userId: Optional[str] = None
    groupId: Optional[str] = None
    roomId: Optional[str] = None


# ─── Message ──────────────────────────────────────────────────────────────────

class LineMessage(BaseModel):
    id: str
    type: Literal["text", "image", "sticker", "location", "audio", "video", "file"]
    text: Optional[str] = None   # ΰΈ‘ΰΈ΅ΰΉ€ΰΈ‰ΰΈžΰΈ²ΰΈ° type=text


# ─── Events ───────────────────────────────────────────────────────────────────

class LineEvent(BaseModel):
    type: Literal["message", "follow", "unfollow", "join", "leave", "postback"]
    timestamp: int
    replyToken: Optional[str] = None
    source: LineSource
    message: Optional[LineMessage] = None


# ─── Root Payload ─────────────────────────────────────────────────────────────

class LineWebhookPayload(BaseModel):
    destination: str        # Channel ID ΰΈ›ΰΈ₯ΰΈ²ΰΈ’ΰΈ—ΰΈ²ΰΈ‡
    events: list[LineEvent]


# ─── Sentiment Result ─────────────────────────────────────────────────────────

class SentimentResult(BaseModel):
    label: Literal["positive", "neutral", "negative"]
    score: float                          # confidence ΰΈ‚ΰΈ­ΰΈ‡ label ΰΈ«ΰΈ₯ัก (0–1)
    raw_scores: dict[str, float]          # {"positive": 0.8, "neutral": 0.1, "negative": 0.1}