src/domain/training/charts.py

from enum import Enum
from typing import Optional, Dict, Any
from pydantic import BaseModel, Field


class ChartType(str, Enum):
    """Supported chart types."""

    PACE = "pace"
    HEART_RATE = "heart_rate"
    VOLUME = "volume"
    FREQUENCY = "frequency"
    ZONES = "zones"
    DYNAMIC = "dynamic"


class ChartSpec(BaseModel):
    """A specification for a chart to be rendered."""

    chart_type: ChartType
    title: Optional[str] = None
    params: Dict[str, Any] = Field(default_factory=dict)