{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://missionweaveprotocol.dev/schemas/0.1/event.schema.json",
  "title": "MissionWeaveProtocol 0.1 Event Envelope",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "protocolVersion",
    "eventId",
    "kind",
    "actor",
    "cause",
    "correlationId",
    "occurredAt",
    "payload",
    "acceptedBy",
    "signature"
  ],
  "properties": {
    "protocolVersion": {
      "$ref": "common.schema.json#/$defs/protocolVersion"
    },
    "eventId": {
      "$ref": "common.schema.json#/$defs/id"
    },
    "groupId": {
      "$ref": "common.schema.json#/$defs/id"
    },
    "sequence": {
      "$ref": "common.schema.json#/$defs/positiveInteger"
    },
    "aggregateRevision": {
      "$ref": "common.schema.json#/$defs/safeInteger"
    },
    "kind": {
      "anyOf": [
        {
          "enum": [
            "mission.created",
            "mission.coordinator.assigned",
            "mission.coordinator.renewed",
            "mission.submitted_for_approval",
            "mission.approved",
            "mission.changes_requested",
            "mission.cancelled",
            "mission.terminated",
            "mission.child.created",
            "mission.follow_up.created",
            "membership.changed",
            "membership.ended",
            "membership.delegation.granted",
            "message.posted",
            "message.corrected",
            "message.retracted",
            "message.redacted",
            "work.proposed",
            "work.authorized",
            "work.offer.created",
            "work.offer.accepted",
            "work.contract.revised",
            "work.started",
            "work.progressed",
            "work.checkpointed",
            "work.blocked",
            "work.unblocked",
            "work.submitted",
            "work.result.accepted",
            "work.failed",
            "work.cancelled",
            "artifact.published",
            "approval.execution.granted",
            "policy.cooperation_override.granted",
            "group.snapshot.created",
            "group.archived"
          ]
        },
        {
          "type": "string",
          "pattern": "^ext\\.[a-z0-9][a-z0-9_-]*(?:\\.[a-z0-9][a-z0-9_-]*){2,}$",
          "maxLength": 160
        }
      ]
    },
    "actor": {
      "$ref": "common.schema.json#/$defs/actor"
    },
    "cause": {
      "type": "object",
      "additionalProperties": false,
      "required": ["type", "id"],
      "properties": {
        "type": {
          "enum": ["command", "event", "timer", "policy"]
        },
        "id": {
          "$ref": "common.schema.json#/$defs/id"
        }
      }
    },
    "correlationId": {
      "$ref": "common.schema.json#/$defs/id"
    },
    "conversationId": {
      "$ref": "common.schema.json#/$defs/id"
    },
    "workItemId": {
      "$ref": "common.schema.json#/$defs/id"
    },
    "occurredAt": {
      "$ref": "common.schema.json#/$defs/timestamp"
    },
    "payload": {
      "type": "object"
    },
    "acceptedBy": {
      "$ref": "common.schema.json#/$defs/actor"
    },
    "commandHash": {
      "$ref": "common.schema.json#/$defs/sha256"
    },
    "extensions": {
      "$ref": "common.schema.json#/$defs/extensions"
    },
    "signature": {
      "$ref": "common.schema.json#/$defs/signature"
    }
  },
  "allOf": [
    {
      "if": {
        "properties": {
          "kind": {
            "enum": [
              "ext.missionweaveprotocol.registry.agent_card_registered",
              "ext.missionweaveprotocol.identity.session_opened"
            ]
          }
        },
        "required": ["kind"]
      },
      "then": {
        "properties": {
          "actor": {
            "properties": {
              "type": {
                "const": "service"
              }
            },
            "required": ["type"]
          }
        },
        "not": {
          "anyOf": [
            {
              "required": ["groupId"]
            },
            {
              "required": ["sequence"]
            },
            {
              "required": ["aggregateRevision"]
            }
          ]
        }
      },
      "else": {
        "required": ["groupId", "sequence", "aggregateRevision"]
      }
    }
  ]
}