{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://concert.foundation/signet/v0.1/obligation.schema.json",
  "title": "Obligation",
  "description": "A contractual obligation, deliverable, or milestone with a compliance state.",
  "type": "object",
  "required": [
    "id",
    "description",
    "status"
  ],
  "additionalProperties": false,
  "properties": {
    "type": {
      "const": "Obligation"
    },
    "id": {
      "type": "string"
    },
    "description": {
      "type": "string"
    },
    "dueDate": {
      "type": "string",
      "format": "date-time"
    },
    "responsibleParty": {
      "$ref": "definitions.schema.json#/definitions/Identifier"
    },
    "status": {
      "type": "string",
      "enum": [
        "pending",
        "met",
        "breached",
        "waived"
      ]
    },
    "evidence": {
      "type": "array",
      "items": {
        "$ref": "definitions.schema.json#/definitions/Document"
      }
    },
    "dischargedBy": {
      "type": "array",
      "items": {
        "$ref": "definitions.schema.json#/definitions/Identifier"
      },
      "description": "The Order, Invoice, or Document(s) that discharged this obligation. SHOULD be present once status is `met`."
    }
  }
}