{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://nightscout.github.io/schemas/profile-definition.schema.json",
  "title": "ProfileDefinition",
  "description": "User-authored, versioned profile configuration containing basal rates, ISF, CR, and targets",
  "type": "object",
  "required": ["profileId", "contentHash", "title", "timezone", "units", "schedules", "createdBy", "createdAt"],
  "properties": {
    "profileId": {
      "type": "string",
      "description": "Stable unique identifier for this profile"
    },
    "contentHash": {
      "type": "string",
      "pattern": "^[a-f0-9]{64}$",
      "description": "SHA-256 hash of canonicalized profile content for deduplication and verification"
    },
    "title": {
      "type": "string",
      "minLength": 1,
      "maxLength": 100,
      "description": "Human-readable profile name"
    },
    "timezone": {
      "type": "string",
      "description": "IANA timezone identifier (e.g., 'America/New_York')"
    },
    "units": {
      "type": "string",
      "enum": ["mg/dL", "mmol/L"],
      "description": "Blood glucose units"
    },
    "schedules": {
      "type": "object",
      "required": ["basal", "isf", "cr", "target"],
      "properties": {
        "basal": {
          "type": "array",
          "minItems": 1,
          "description": "Time-based basal rate schedule",
          "items": {
            "type": "object",
            "required": ["time", "rate"],
            "properties": {
              "time": {
                "type": "string",
                "pattern": "^([01]?[0-9]|2[0-3]):[0-5][0-9]$",
                "description": "Start time in HH:MM format"
              },
              "rate": {
                "type": "number",
                "minimum": 0,
                "maximum": 35,
                "description": "Basal rate in U/hr"
              }
            }
          }
        },
        "isf": {
          "type": "array",
          "minItems": 1,
          "description": "Insulin sensitivity factor schedule",
          "items": {
            "type": "object",
            "required": ["time", "value"],
            "properties": {
              "time": {
                "type": "string",
                "pattern": "^([01]?[0-9]|2[0-3]):[0-5][0-9]$"
              },
              "value": {
                "type": "number",
                "minimum": 1,
                "description": "ISF in configured units per 1U insulin"
              }
            }
          }
        },
        "cr": {
          "type": "array",
          "minItems": 1,
          "description": "Carb ratio schedule",
          "items": {
            "type": "object",
            "required": ["time", "value"],
            "properties": {
              "time": {
                "type": "string",
                "pattern": "^([01]?[0-9]|2[0-3]):[0-5][0-9]$"
              },
              "value": {
                "type": "number",
                "minimum": 1,
                "description": "Grams of carbs per 1U insulin"
              }
            }
          }
        },
        "target": {
          "type": "array",
          "minItems": 1,
          "description": "Target glucose range schedule",
          "items": {
            "type": "object",
            "required": ["time", "low", "high"],
            "properties": {
              "time": {
                "type": "string",
                "pattern": "^([01]?[0-9]|2[0-3]):[0-5][0-9]$"
              },
              "low": {
                "type": "number",
                "minimum": 60,
                "description": "Lower target bound"
              },
              "high": {
                "type": "number",
                "minimum": 60,
                "description": "Upper target bound"
              }
            }
          }
        }
      }
    },
    "insulinModel": {
      "type": "object",
      "description": "Insulin action curve parameters",
      "properties": {
        "type": {
          "type": "string",
          "enum": ["rapid", "fiasp", "lyumjev", "afrezza", "custom"],
          "description": "Insulin model type"
        },
        "dia": {
          "type": "number",
          "minimum": 2,
          "maximum": 10,
          "description": "Duration of insulin action in hours"
        },
        "peakTime": {
          "type": "number",
          "minimum": 15,
          "maximum": 180,
          "description": "Time to peak action in minutes"
        }
      }
    },
    "createdBy": {
      "$ref": "#/$defs/issuerRef"
    },
    "createdAt": {
      "type": "string",
      "format": "date-time"
    },
    "legacyProfileName": {
      "type": "string",
      "description": "For backward compatibility mapping to legacy profile name field"
    }
  },
  "$defs": {
    "issuerRef": {
      "type": "object",
      "required": ["issuerType", "issuerId"],
      "properties": {
        "issuerType": {
          "type": "string",
          "enum": ["human", "controller", "agent", "caregiver"]
        },
        "issuerId": {
          "type": "string"
        }
      }
    }
  }
}