from typing import Literal

from pydantic import BaseModel, Field


class Ticket(BaseModel):
    id: str
    summary: str
    severity: Literal["low", "medium", "high"]
    embedding: list[float] | None = None
    status: Literal["open", "in_progress", "resolved"] = "open"
    max_attempts: int = Field(default=4, ge=1)
    attempts_used: int = Field(default=0, ge=0)


class Agent(BaseModel):
    id: str = "agent-1"
    role: str = "support_agent"


class SystemState(BaseModel):
    episode_id: str
    step_count: int = 0
    done: bool = False
    score: float = 0.0
    ticket: Ticket
    agent: Agent = Field(default_factory=Agent)