from datetime import datetime
from typing import TYPE_CHECKING

from pydantic import BaseModel
from core_domain import WorkflowVersionContract
from core_shared import JSONValue

if TYPE_CHECKING:
    from app.db.models import WorkflowDefinitionModel, WorkflowVersion


class WorkflowCreateRequest(BaseModel):
    tenant_id: str
    app_id: str
    code: str
    name: str
    workflow_type: str = "main"


class WorkflowDefinitionResponse(BaseModel):
    id: str
    tenant_id: str
    app_id: str
    code: str
    name: str
    workflow_type: str
    latest_version_no: int
    created_time: datetime

    @classmethod
    def from_entity(cls, entity: "WorkflowDefinitionModel") -> "WorkflowDefinitionResponse":
        return cls.model_validate(entity, from_attributes=True)


class WorkflowVersionCreateRequest(BaseModel):
    tenant_id: str
    workflow_id: str
    dsl_json: dict[str, JSONValue] | None = None
    compiled_plan_json: dict[str, JSONValue] | None = None
    schema_version: str | None = None
    checksum: str | None = None
    status: str = "draft"


class WorkflowVersionResponse(WorkflowVersionContract):

    @classmethod
    def from_entity(cls, entity: "WorkflowVersion") -> "WorkflowVersionResponse":
        return cls.model_validate(entity, from_attributes=True)