{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/trimble-agriculture/main/json-schema/trimble-agriculture-activity-schema.json",
  "title": "Trimble Agriculture Equipment Activity",
  "description": "An in-field equipment activity recorded from a Trimble precision ag display",
  "type": "object",
  "required": ["id", "activityType"],
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "description": "Unique activity identifier"
    },
    "activityType": {
      "type": "string",
      "enum": ["Planting", "Fertilizing", "Spraying", "Harvesting", "Tillage", "Irrigation"],
      "description": "Type of in-field operation"
    },
    "cropZoneId": {
      "type": "string",
      "format": "uuid",
      "description": "Crop zone where the activity was performed"
    },
    "operatorId": {
      "type": "string",
      "format": "uuid",
      "description": "Operator who performed the activity"
    },
    "equipmentId": {
      "type": "string",
      "format": "uuid",
      "description": "Equipment used for the activity"
    },
    "startTime": {
      "type": "string",
      "format": "date-time",
      "description": "Activity start time (ISO 8601 UTC)"
    },
    "endTime": {
      "type": "string",
      "format": "date-time",
      "description": "Activity end time (ISO 8601 UTC)"
    },
    "area": {
      "type": "number",
      "format": "float",
      "minimum": 0,
      "description": "Area covered by the activity in hectares"
    },
    "materials": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "materialId": {
            "type": "string",
            "format": "uuid"
          },
          "applicationRate": {
            "type": "number",
            "description": "Application rate per unit area"
          },
          "unit": {
            "type": "string",
            "description": "Application rate unit (e.g., kg/ha, L/ha, seeds/ha)"
          }
        }
      },
      "description": "Materials applied during the activity"
    },
    "status": {
      "type": "string",
      "enum": ["InProgress", "Completed", "Cancelled"],
      "description": "Activity completion status"
    }
  }
}