"""Incident-related schemas."""

from datetime import datetime
from typing import Any, Literal
from uuid import UUID

from pydantic import BaseModel, Field

IncidentStatus = Literal["triggered", "acknowledged", "mitigated", "resolved"]
IncidentSeverity = Literal["critical", "high", "medium", "low"]


class IncidentCreate(BaseModel):
    """Request body for creating an incident."""

    title: str = Field(min_length=1, max_length=200)
    description: str | None = Field(default=None, max_length=5000)
    severity: IncidentSeverity = "medium"


class IncidentResponse(BaseModel):
    """Incident response."""

    id: UUID
    service_id: UUID
    title: str
    description: str | None
    status: IncidentStatus
    severity: IncidentSeverity
    version: int
    created_at: datetime
    updated_at: datetime


class IncidentEventResponse(BaseModel):
    """Incident event response."""

    id: UUID
    incident_id: UUID
    event_type: str
    actor_user_id: UUID | None
    payload: dict[str, Any] | None
    created_at: datetime


class TransitionRequest(BaseModel):
    """Request body for transitioning incident status."""

    to_status: IncidentStatus
    version: int = Field(description="Current version for optimistic locking")
    note: str | None = Field(default=None, max_length=1000)


class CommentRequest(BaseModel):
    """Request body for adding a comment to an incident."""

    content: str = Field(min_length=1, max_length=5000)