{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://yarramate.org/schema/evidence-report/v1",
  "title": "YarraMate evidence report",
  "type": "object",
  "additionalProperties": false,
  "required": ["format", "evidence", "provider", "summary", "observations"],
  "properties": {
    "format": { "const": "yarramate/evidence-report/v1" },
    "evidence": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9]*(?:-[a-z0-9]+)*@[0-9]+\\.[0-9]+$"
    },
    "provider": { "$ref": "#/$defs/id" },
    "summary": {
      "type": "object",
      "additionalProperties": false,
      "required": ["confirmed", "contradicted", "unknown", "notObserved"],
      "properties": {
        "confirmed": { "type": "integer", "minimum": 0 },
        "contradicted": { "type": "integer", "minimum": 0 },
        "unknown": { "type": "integer", "minimum": 0 },
        "notObserved": { "type": "integer", "minimum": 0 }
      }
    },
    "observations": {
      "type": "array",
      "items": { "$ref": "#/$defs/observation" }
    }
  },
  "$defs": {
    "id": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9]*(?:-[a-z0-9]+)*$"
    },
    "qualifiedIdentity": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9]*(?:-[a-z0-9]+)*(?:~[a-z][a-z0-9-]*)?$"
    },
    "evidenceLocator": {
      "type": "object",
      "additionalProperties": false,
      "required": ["uri"],
      "properties": {
        "uri": { "type": "string", "minLength": 1 },
        "message": { "type": "string", "minLength": 1 }
      }
    },
    "observationKey": {
      "type": "string",
      "pattern": "^[A-Za-z0-9][A-Za-z0-9._/-]*$"
    },
    "observation": {
      "type": "object",
      "additionalProperties": false,
      "required": ["result", "evidence"],
      "dependentRequired": {
        "key": ["value"],
        "value": ["key"]
      },
      "properties": {
        "subject": { "$ref": "#/$defs/qualifiedIdentity" },
        "claim": { "$ref": "#/$defs/qualifiedIdentity" },
        "result": {
          "enum": ["confirmed", "contradicted", "unknown", "not-observed"]
        },
        "key": { "$ref": "#/$defs/observationKey" },
        "value": { "type": "string", "minLength": 1 },
        "evidence": { "$ref": "#/$defs/evidenceLocator" }
      },
      "oneOf": [
        {
          "required": ["subject"],
          "not": { "required": ["claim"] }
        },
        {
          "required": ["claim"],
          "not": { "required": ["subject"] }
        }
      ]
    }
  }
}