from typing import Annotated, Optional, Literal
from pydantic import BaseModel, ConfigDict, Field
from datetime import datetime

MemberPermission = Literal["read_only", "create_modify"]
MemberStatus = Literal["pending", "accepted", "rejected"]
InviteResponse = Literal["accepted", "rejected"]


class ProjectMemberInvite(BaseModel):
    model_config = ConfigDict(extra="forbid")

    user_ids: list[Annotated[int, Field(ge=1, le=2147483647)]] = Field(min_length=1, max_length=10)
    permission: MemberPermission = "create_modify"


class ProjectMemberUpdate(BaseModel):
    model_config = ConfigDict(extra="forbid")

    permission: MemberPermission


class ProjectMemberRespond(BaseModel):
    model_config = ConfigDict(extra="forbid")

    response: InviteResponse


class ProjectMemberResponse(BaseModel):
    id: int
    project_id: int
    user_id: int
    invited_by: int
    permission: str
    status: str
    source: str
    user_name: str | None = None
    inviter_name: str | None = None
    created_at: datetime
    updated_at: datetime
    accepted_at: datetime | None = None

    model_config = ConfigDict(from_attributes=True)