{
  "$id": "certs/v1.0",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "StudentCert",
  "type": "object",
  "required": [ "did", "fullname", "cert", "issuers"],
  "properties": {
    "did": {"type": "string"},
    "weid": {"type": "string"},
    "fullname": {
      "type": "object",
      "properties": {
        "cn": {"type": "string"},
        "en": {"type": "string"}
      }
    },

    "cert":{
      "type": "object",
      "required": ["code", "title", "category", "issueDate"],
      "properties": {
        "code": {"type": "string"},
        "title": {
          "type": "object",
          "properties": {
            "cn": {"type": "string"},
            "en": {"type": "string"}
          }
        },
        "category": {
          "type": "object",
          "properties": {
            "cn": {"type": "string"},
            "en": {"type": "string"}
          }
        },
        "totalDuration": {
          "type": "number"
        },
        "issueDate": {
          "type": "string",
          "format": "date-time"
        },
        "validBefore": {
          "type": "string",
          "format": "date-time"
        },
        "permanent": {"type": "boolean"}
      }
    },

    "issuers": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "properties": {
          "name": {
            "type": "object",
            "properties": {
              "cn": {"type": "string"},
              "en": {"type": "string"}
            }
          }
        }
      }
    },

    "courses": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "code": {"type": "string"},
          "title": {
            "type": "object",
            "properties": {
              "cn": {"type": "string"},
              "en": {"type": "string"}
            }
          },
          "startDate": {
            "type": "string",
            "format": "date"
          },
          "endDate": {
            "type": "string",
            "format": "date"
          },
          "duration": {"type": "number"},
          "grade": {"type": "string"},
          "score": {"type": "string"},
          "language": {"type": "string"}
        }
      }
    }
  }
}