from pydantic import BaseModel, Field
from typing import Optional, List
from datetime import datetime
from uuid import uuid4


def new_msg_id() -> str:
    return f"MSG-{datetime.now().strftime('%Y%m%d')}-{str(uuid4())[:8].upper()}"


class InteractiveAction(BaseModel):
    type: str                               # BUTTON | APPROVAL_BUTTONS
    label: Optional[str] = None
    command_code: Optional[str] = None
    approve_url: Optional[str] = None
    reject_url: Optional[str] = None


class Message(BaseModel):
    message_id: str = Field(default_factory=new_msg_id)
    timestamp: str = Field(default_factory=lambda: datetime.now().isoformat())
    room_id: str
    sender: str
    sender_type: str = "HUMAN"              # HUMAN | BOT
    msg_type: str = "CHAT"
    content: str
    is_widget: bool = False
    interactive_action: Optional[InteractiveAction] = None


class WebhookPayload(BaseModel):
    user_id: str
    text: str
    room_id: str
    files: List[dict] = []
    bot: bool = False


class IncomingChat(BaseModel):
    content: str
    room_id: str