from datetime import datetime

from pydantic import BaseModel, ConfigDict, Field

from app.chats.models import ChatMemberRole, ChatType


class ChatRead(BaseModel):
    model_config = ConfigDict(from_attributes=True)

    id: int
    type: ChatType
    title: str | None = None
    pinned_message_id: int | None = None
    created_at: datetime


class ChatMemberRead(BaseModel):
    model_config = ConfigDict(from_attributes=True)

    id: int
    user_id: int
    role: ChatMemberRole
    joined_at: datetime


class ChatDetailRead(ChatRead):
    members: list[ChatMemberRead]


class ChatCreateRequest(BaseModel):
    type: ChatType
    title: str | None = Field(default=None, max_length=255)
    member_ids: list[int] = Field(default_factory=list)


class ChatMemberAddRequest(BaseModel):
    user_id: int


class ChatMemberRoleUpdateRequest(BaseModel):
    role: ChatMemberRole


class ChatTitleUpdateRequest(BaseModel):
    title: str = Field(min_length=1, max_length=255)


class ChatPinMessageRequest(BaseModel):
    message_id: int | None = None