{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://bpa.local/schemas/decision-record/v1alpha1",
  "title": "BPA Decision Record v1alpha1",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "apiVersion",
    "decisionId",
    "decisionType",
    "status",
    "scope",
    "preconditions",
    "value",
    "confirmedBy",
    "confirmedAt"
  ],
  "properties": {
    "apiVersion": { "const": "bpa.decision/v1alpha1" },
    "decisionId": { "$ref": "#/$defs/id" },
    "decisionType": { "$ref": "#/$defs/id" },
    "status": { "enum": ["active", "superseded", "revoked"] },
    "scope": {
      "type": "object",
      "minProperties": 1,
      "maxProperties": 20,
      "propertyNames": { "$ref": "#/$defs/id" },
      "additionalProperties": {
        "type": "string",
        "minLength": 1,
        "maxLength": 500
      }
    },
    "preconditions": {
      "type": "object",
      "minProperties": 1,
      "maxProperties": 50,
      "propertyNames": { "$ref": "#/$defs/id" },
      "additionalProperties": { "$ref": "#/$defs/digest" }
    },
    "value": {},
    "valueDigest": { "$ref": "#/$defs/digest" },
    "confirmedBy": { "$ref": "#/$defs/id" },
    "confirmedAt": { "$ref": "#/$defs/timestamp" },
    "supersedes": { "$ref": "#/$defs/id" },
    "revokedAt": { "$ref": "#/$defs/timestamp" },
    "revokedBy": { "$ref": "#/$defs/id" }
  },
  "$defs": {
    "id": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$"
    },
    "digest": { "type": "string", "pattern": "^sha256:[a-f0-9]{64}$" },
    "timestamp": { "type": "string", "format": "date-time" }
  }
}