{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://github.com/api-evangelist/under-armour/blob/main/json-schema/under-armour-workout-schema.json",
  "title": "Under Armour Workout",
  "description": "Schema for a MapMyFitness workout record including aggregates, metadata, and optional time series data.",
  "type": "object",
  "required": ["name", "start_datetime", "start_locale_timezone", "aggregates"],
  "properties": {
    "name": {
      "type": "string",
      "description": "Workout title"
    },
    "start_datetime": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 start time of the workout"
    },
    "start_locale_timezone": {
      "type": "string",
      "description": "IANA timezone identifier for the workout location"
    },
    "aggregates": {
      "type": "object",
      "description": "Aggregate metrics for the workout",
      "properties": {
        "distance_total": {
          "type": "number",
          "description": "Total distance in meters"
        },
        "steps_total": {
          "type": "integer",
          "description": "Total step count"
        },
        "active_time_total": {
          "type": "number",
          "description": "Total active time in seconds"
        },
        "elapsed_time_total": {
          "type": "number",
          "description": "Total elapsed time in seconds"
        },
        "metabolic_energy_total": {
          "type": "number",
          "description": "Total energy expenditure in joules"
        },
        "speed_avg": {
          "type": "number",
          "description": "Average speed in meters/second"
        },
        "heartrate_avg": {
          "type": "number",
          "description": "Average heart rate in beats/minute"
        },
        "heartrate_max": {
          "type": "number",
          "description": "Maximum heart rate in beats/minute"
        },
        "heartrate_min": {
          "type": "number",
          "description": "Minimum heart rate in beats/minute"
        }
      }
    },
    "activity_type": {
      "type": "object",
      "description": "Reference to the activity type"
    },
    "time_series": {
      "type": "object",
      "description": "Time series data available when field_set=time_series is requested",
      "properties": {
        "position": {
          "type": "array",
          "description": "GPS position samples [offset_seconds, {lat, lng, elevation}]",
          "items": {
            "type": "array"
          }
        },
        "distance": {
          "type": "array",
          "description": "Cumulative distance samples [offset_seconds, meters]",
          "items": {
            "type": "array"
          }
        },
        "heartrate": {
          "type": "array",
          "description": "Heart rate samples [offset_seconds, bpm]",
          "items": {
            "type": "array"
          }
        },
        "speed": {
          "type": "array",
          "description": "Speed samples [offset_seconds, m/s]",
          "items": {
            "type": "array"
          }
        }
      }
    }
  }
}