{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://hdrlframework.org/data/hdrl-indicators-v1.schema.json",
  "title": "HDRL applied-v1 indicator catalogue",
  "description": "Schema for the canonical machine-readable catalogue of the 64 HDRL applied-v1 indicators.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "$schema",
    "catalogue_id",
    "catalogue_version",
    "schema_version",
    "canonical_url",
    "framework",
    "source",
    "license",
    "indicator_count",
    "maturity_level_names",
    "vocabularies",
    "domains",
    "indicators"
  ],
  "properties": {
    "$schema": {
      "const": "https://hdrlframework.org/data/hdrl-indicators-v1.schema.json"
    },
    "catalogue_id": {
      "const": "hdrl-indicators"
    },
    "catalogue_version": {
      "const": "1.0.2"
    },
    "schema_version": {
      "const": "1.0.2"
    },
    "canonical_url": {
      "const": "https://hdrlframework.org/data/hdrl-indicators-v1.json"
    },
    "framework": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "name",
        "version",
        "url"
      ],
      "properties": {
        "name": {
          "const": "Health Data Readiness Level (HDRL) Framework"
        },
        "version": {
          "const": "1.0.1"
        },
        "url": {
          "const": "https://hdrlframework.org/"
        }
      }
    },
    "source": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "name",
        "url",
        "repository_path",
        "sha256"
      ],
      "properties": {
        "name": {
          "const": "Health Data Readiness Level Framework V1.md"
        },
        "url": {
          "const": "https://hdrlframework.org/downloads/health-data-readiness-level-framework-v1.md"
        },
        "repository_path": {
          "const": "reference/frozen-applied-v1/Health Data Readiness Level Framework V1.md"
        },
        "sha256": {
          "type": "string",
          "pattern": "^[a-f0-9]{64}$"
        }
      }
    },
    "license": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "identifier",
        "url",
        "attribution"
      ],
      "properties": {
        "identifier": {
          "const": "CC-BY-4.0"
        },
        "url": {
          "const": "https://creativecommons.org/licenses/by/4.0/"
        },
        "attribution": {
          "type": "string",
          "minLength": 1
        }
      }
    },
    "indicator_count": {
      "const": 64
    },
    "maturity_level_names": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "L1",
        "L2",
        "L3",
        "L4",
        "L5"
      ],
      "properties": {
        "L1": {
          "const": "Initial"
        },
        "L2": {
          "const": "Developing"
        },
        "L3": {
          "const": "Defined"
        },
        "L4": {
          "const": "Managed"
        },
        "L5": {
          "const": "Optimising"
        }
      }
    },
    "vocabularies": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "indicator_types",
        "applicability_classes",
        "units"
      ],
      "properties": {
        "indicator_types": {
          "type": "object",
          "additionalProperties": false,
          "required": [
            "Core",
            "Enhancement"
          ],
          "properties": {
            "Core": {
              "type": "string",
              "minLength": 1
            },
            "Enhancement": {
              "type": "string",
              "minLength": 1
            }
          }
        },
        "applicability_classes": {
          "type": "object",
          "minProperties": 9,
          "additionalProperties": {
            "type": "string",
            "minLength": 1
          }
        },
        "units": {
          "type": "object",
          "additionalProperties": false,
          "required": [
            "S",
            "V",
            "B"
          ],
          "properties": {
            "S": {
              "const": "System"
            },
            "V": {
              "const": "Service"
            },
            "B": {
              "const": "Both"
            }
          }
        }
      }
    },
    "domains": {
      "type": "array",
      "minItems": 8,
      "maxItems": 8,
      "items": {
        "$ref": "#/$defs/domain"
      }
    },
    "indicators": {
      "type": "array",
      "minItems": 64,
      "maxItems": 64,
      "items": {
        "$ref": "#/$defs/indicator"
      }
    }
  },
  "$defs": {
    "domain": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "ref",
        "name",
        "narrative"
      ],
      "properties": {
        "ref": {
          "type": "string",
          "pattern": "^[A-H]$"
        },
        "name": {
          "type": "string",
          "minLength": 1
        },
        "narrative": {
          "type": "string",
          "minLength": 1
        }
      }
    },
    "indicator": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "ref",
        "name",
        "domain",
        "domain_name",
        "type",
        "applicability_class",
        "unit",
        "alliance_principles",
        "foundational",
        "maturity_levels",
        "minimum_evidence"
      ],
      "properties": {
        "ref": {
          "type": "string",
          "pattern": "^[A-H]\\.[1-9][0-9]*\\.[1-9][0-9]*$"
        },
        "name": {
          "type": "string",
          "minLength": 1
        },
        "domain": {
          "type": "string",
          "pattern": "^[A-H]$"
        },
        "domain_name": {
          "type": "string",
          "minLength": 1
        },
        "type": {
          "enum": [
            "Core",
            "Enhancement"
          ]
        },
        "applicability_class": {
          "enum": [
            "B0",
            "C1",
            "C2",
            "C3",
            "C3/4",
            "C4",
            "C6",
            "O",
            "Y"
          ]
        },
        "unit": {
          "enum": [
            "S",
            "V",
            "B"
          ]
        },
        "alliance_principles": {
          "type": "array",
          "uniqueItems": true,
          "items": {
            "type": "integer",
            "minimum": 1,
            "maximum": 11
          }
        },
        "foundational": {
          "type": "boolean"
        },
        "maturity_levels": {
          "$ref": "#/$defs/maturityLevels"
        },
        "minimum_evidence": {
          "$ref": "#/$defs/minimumEvidence"
        }
      }
    },
    "maturityLevels": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "L1",
        "L2",
        "L3",
        "L4",
        "L5"
      ],
      "properties": {
        "L1": {
          "type": "string",
          "minLength": 1
        },
        "L2": {
          "type": "string",
          "minLength": 1
        },
        "L3": {
          "type": "string",
          "minLength": 1
        },
        "L4": {
          "type": "string",
          "minLength": 1
        },
        "L5": {
          "type": "string",
          "minLength": 1
        }
      }
    },
    "minimumEvidence": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "L3",
        "L4",
        "L5"
      ],
      "properties": {
        "L3": {
          "$ref": "#/$defs/evidenceList"
        },
        "L4": {
          "$ref": "#/$defs/evidenceList"
        },
        "L5": {
          "$ref": "#/$defs/evidenceList"
        }
      }
    },
    "evidenceList": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "string",
        "minLength": 1
      }
    }
  }
}