{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:orbiplex:schema:membership-invitation:v1",
  "title": "MembershipInvitation v1",
  "description": "Append-only invitation fact for entering a bounded Orbiplex influence surface. An invitation creates a traceable entry path; it does not itself grant authority.",
  "type": "object",
  "additionalProperties": false,
  "x-dia-workflow": "project",
  "x-dia-status": "draft",
  "x-dia-basis": [
    "P051",
    "DIA-MS-001"
  ],
  "required": [
    "schema/v",
    "invitation/id",
    "issued/at",
    "expires/at",
    "issuer/subject",
    "entry/profile",
    "scopes",
    "status"
  ],
  "properties": {
    "schema/v": {
      "const": 1
    },
    "invitation/id": {
      "type": "string",
      "pattern": "^membership-invitation:[A-Za-z0-9._:-]+$"
    },
    "issued/at": {
      "type": "string",
      "format": "date-time"
    },
    "expires/at": {
      "type": "string",
      "format": "date-time"
    },
    "issuer/subject": {
      "$ref": "_shared/membership-enums.v1.schema.json#/$defs/subject"
    },
    "invitee/subject": {
      "$ref": "_shared/membership-enums.v1.schema.json#/$defs/subject"
    },
    "invitee/anchor-ref": {
      "type": "string",
      "minLength": 1,
      "description": "Optional invitee anchor when the future subject id is not known yet."
    },
    "entry/profile": {
      "$ref": "_shared/membership-enums.v1.schema.json#/$defs/entry_profile_class"
    },
    "scopes": {
      "$ref": "_shared/membership-enums.v1.schema.json#/$defs/scopes"
    },
    "sponsorship/required": {
      "type": "boolean",
      "default": false
    },
    "policy/ref": {
      "type": "string",
      "minLength": 1
    },
    "status": {
      "type": "string",
      "enum": [
        "issued",
        "accepted",
        "expired",
        "revoked"
      ]
    },
    "notes": {
      "type": "string"
    },
    "extensions": {
      "$ref": "_shared/membership-enums.v1.schema.json#/$defs/extensions"
    }
  },
  "anyOf": [
    {
      "required": [
        "invitee/subject"
      ]
    },
    {
      "required": [
        "invitee/anchor-ref"
      ]
    }
  ]
}