{
  "type": "object",
  "properties": {
    "schema_version": {
      "const": "1.0.0"
    },
    "id": {
      "type": "string",
      "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$"
    },
    "title": {
      "type": "string",
      "minLength": 1
    },
    "publisher": {
      "type": "string",
      "minLength": 1
    },
    "authors": {
      "type": "array",
      "items": {
        "type": "string",
        "minLength": 1
      },
      "minItems": 0,
      "uniqueItems": true
    },
    "primary_url": {
      "type": "string",
      "format": "uri"
    },
    "resource_type_id": {
      "type": "string",
      "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$"
    },
    "topic_ids": {
      "type": "array",
      "items": {
        "type": "string",
        "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$"
      },
      "minItems": 1,
      "uniqueItems": true
    },
    "skillset_ids": {
      "type": "array",
      "items": {
        "type": "string",
        "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$"
      },
      "minItems": 1,
      "uniqueItems": true
    },
    "version": {
      "type": [
        "string",
        "null"
      ]
    },
    "summary": {
      "type": "string",
      "minLength": 1,
      "maxLength": 1000
    },
    "defensive_use": {
      "type": "string",
      "minLength": 1,
      "maxLength": 1000
    },
    "prerequisites": {
      "type": "array",
      "items": {
        "type": "string",
        "minLength": 1
      },
      "minItems": 0,
      "uniqueItems": true
    },
    "prerequisites_basis": {
      "enum": [
        "editorial_guidance",
        "publisher_explicit"
      ]
    },
    "access": {
      "type": "object",
      "properties": {
        "cost": {
          "enum": [
            "free",
            "paid",
            "mixed",
            "unknown"
          ]
        },
        "note": {
          "type": [
            "string",
            "null"
          ]
        }
      },
      "required": [
        "cost",
        "note"
      ],
      "additionalProperties": false
    },
    "dates": {
      "type": "object",
      "properties": {
        "published": {
          "$ref": "#/$defs/date"
        },
        "version_released": {
          "$ref": "#/$defs/date",
          "description": "Release date of the educational resource edition, not the version of software discussed. Record software patch dates with their source in caveats or defensive_use."
        },
        "source_displayed": {
          "$ref": "#/$defs/date"
        }
      },
      "required": [
        "published",
        "version_released",
        "source_displayed"
      ],
      "additionalProperties": false
    },
    "freshness": {
      "type": "object",
      "properties": {
        "reviewed_at": {
          "type": "string",
          "format": "date-time"
        },
        "living_resource": {
          "type": "boolean"
        },
        "status": {
          "const": "primary_source_reviewed"
        },
        "note": {
          "type": "string",
          "minLength": 1
        }
      },
      "required": [
        "reviewed_at",
        "living_resource",
        "status",
        "note"
      ],
      "additionalProperties": false
    },
    "sources": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$"
          },
          "url": {
            "type": "string",
            "format": "uri"
          },
          "title": {
            "type": "string",
            "minLength": 1
          },
          "publisher": {
            "type": "string",
            "minLength": 1
          },
          "provenance": {
            "const": "official_primary"
          },
          "retrieved_at": {
            "type": "string",
            "format": "date-time"
          },
          "supports": {
            "type": "array",
            "items": {
              "enum": [
                "summary",
                "version",
                "dates",
                "prerequisites"
              ]
            },
            "minItems": 1,
            "uniqueItems": true
          }
        },
        "required": [
          "id",
          "url",
          "title",
          "publisher",
          "provenance",
          "retrieved_at",
          "supports"
        ],
        "additionalProperties": false
      },
      "minItems": 1
    },
    "caveats": {
      "type": "array",
      "items": {
        "type": "string",
        "minLength": 1
      },
      "minItems": 0,
      "uniqueItems": true
    },
    "content_scope": {
      "const": "defensive_education"
    }
  },
  "required": [
    "schema_version",
    "id",
    "title",
    "publisher",
    "authors",
    "primary_url",
    "resource_type_id",
    "topic_ids",
    "skillset_ids",
    "version",
    "summary",
    "defensive_use",
    "prerequisites",
    "prerequisites_basis",
    "access",
    "dates",
    "freshness",
    "sources",
    "caveats",
    "content_scope"
  ],
  "additionalProperties": false,
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "General defensive security resource",
  "$defs": {
    "date": {
      "type": "object",
      "properties": {
        "value": {
          "type": [
            "string",
            "null"
          ],
          "pattern": "^\\d{4}(?:-\\d{2}(?:-\\d{2})?)?$"
        },
        "precision": {
          "enum": [
            "day",
            "month",
            "year",
            null
          ]
        },
        "basis": {
          "enum": [
            "explicit",
            "inferred",
            "url_date",
            "not_reported"
          ]
        },
        "source_id": {
          "type": [
            "string",
            "null"
          ]
        },
        "note": {
          "type": [
            "string",
            "null"
          ]
        }
      },
      "required": [
        "value",
        "precision",
        "basis",
        "source_id",
        "note"
      ],
      "additionalProperties": false
    }
  }
}