from __future__ import annotations

from datetime import datetime, timezone
from typing import Optional

from sqlmodel import Field, SQLModel


def _now() -> datetime:
    return datetime.now(timezone.utc)


class Stack(SQLModel, table=True):
    # id is the stack directory name (slug)
    id: str = Field(primary_key=True)
    name: str
    description: Optional[str] = None
    stacks_dir_override: Optional[str] = None
    created_at: datetime = Field(default_factory=_now)
    updated_at: datetime = Field(default_factory=_now)


# --- API schemas ---


class StackCreate(SQLModel):
    name: str
    description: Optional[str] = None
    yaml: Optional[str] = None  # initial compose content
    env: Optional[str] = None


class StackUpdate(SQLModel):
    name: Optional[str] = None
    description: Optional[str] = None
    yaml: Optional[str] = None
    env: Optional[str] = None


class StackCloneRequest(SQLModel):
    name: str


class ConvertRequest(SQLModel):
    command: str  # a `docker run ...` string


class ConvertResponse(SQLModel):
    yaml: str