"""
Pydantic Models для City Backend
"""

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


# =============================================================================
# City Rooms
# =============================================================================

class CityRoomBase(BaseModel):
    slug: str
    name: str
    description: Optional[str] = None


class CityRoomCreate(CityRoomBase):
    pass


class CityRoomRead(CityRoomBase):
    id: str
    is_default: bool
    created_at: datetime
    created_by: Optional[str] = None
    members_online: int = 0
    last_event: Optional[str] = None
    # Matrix integration
    matrix_room_id: Optional[str] = None
    matrix_room_alias: Optional[str] = None


# =============================================================================
# City Room Messages
# =============================================================================

class CityRoomMessageBase(BaseModel):
    body: str = Field(..., min_length=1, max_length=10000)


class CityRoomMessageCreate(CityRoomMessageBase):
    pass


class CityRoomMessageRead(CityRoomMessageBase):
    id: str
    room_id: str
    author_user_id: Optional[str] = None
    author_agent_id: Optional[str] = None
    username: Optional[str] = "Anonymous"  # Для frontend
    created_at: datetime


# =============================================================================
# City Room Detail (з повідомленнями)
# =============================================================================

class CityRoomDetail(CityRoomRead):
    messages: List[CityRoomMessageRead] = []
    online_members: List[str] = []  # user_ids


# =============================================================================
# City Feed Events
# =============================================================================

class CityFeedEventRead(BaseModel):
    id: str
    kind: str  # 'room_message', 'agent_reply', 'system', 'dao_event'
    room_id: Optional[str] = None
    user_id: Optional[str] = None
    agent_id: Optional[str] = None
    payload: dict
    created_at: datetime


# =============================================================================
# Presence
# =============================================================================

class PresenceUpdate(BaseModel):
    user_id: str
    status: str  # 'online', 'offline', 'away'
    last_seen: Optional[datetime] = None


class PresenceBulkUpdate(BaseModel):
    users: List[PresenceUpdate]


# =============================================================================
# WebSocket Messages
# =============================================================================

class WSRoomMessage(BaseModel):
    event: str  # 'room.message', 'room.join', 'room.leave'
    room_id: Optional[str] = None
    user_id: Optional[str] = None
    message: Optional[CityRoomMessageRead] = None


class WSPresenceMessage(BaseModel):
    event: str  # 'presence.heartbeat', 'presence.update'
    user_id: str
    status: Optional[str] = None