"""Task schemas."""
from pydantic import BaseModel, Field
from typing import Optional, Any
from datetime import datetime


class TaskCreate(BaseModel):
    title: str = Field(..., min_length=1, max_length=500)
    description: str = ""
    priority: str = "medium"
    task_type: str = "single_call"
    input_data: str = ""  # JSON string: {prompt, context, parameters}
    requires_review: bool = True
    assignee_id: Optional[int] = None
    worker_id: Optional[int] = None
    due_date: Optional[datetime] = None
    depends_on: str = "[]"


class TaskUpdate(BaseModel):
    title: Optional[str] = None
    description: Optional[str] = None
    status: Optional[str] = None
    priority: Optional[str] = None
    assignee_id: Optional[int] = None
    worker_id: Optional[int] = None
    input_data: Optional[str] = None
    requires_review: Optional[bool] = None
    due_date: Optional[datetime] = None
    depends_on: Optional[str] = None


class TaskAssign(BaseModel):
    assignee_id: Optional[int] = None
    worker_id: Optional[int] = None


class TaskExecute(BaseModel):
    """Trigger task execution."""
    override_input: Optional[str] = None  # override task input_data
    max_retries: int = 3


class TaskResponse(BaseModel):
    id: int
    project_id: int
    title: str
    description: str
    status: str
    priority: str
    assignee_id: Optional[int] = None
    worker_id: Optional[int] = None
    task_type: str
    input_data: str
    output_data: Optional[str] = None
    requires_review: bool
    review_status: Optional[str] = None
    due_date: Optional[datetime] = None
    started_at: Optional[datetime] = None
    completed_at: Optional[datetime] = None
    tenant_id: int
    created_at: datetime
    updated_at: datetime

    model_config = {"from_attributes": True}


class TaskExecutionResult(BaseModel):
    """Result of executing a task via AI Worker."""
    task_id: int
    status: str  # success, error, needs_review
    output: str = ""
    token_usage: int = 0
    cost_cents: int = 0
    duration_ms: int = 0
    error: Optional[str] = None
    artifact_id: Optional[int] = None