{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://cosmic-clash.invalid/contracts/v1/state-transitions.json",
  "version": 1,
  "resource_states": {
    "queue_ticket": ["QUEUED", "PROPOSED", "ACCEPTED", "ALLOCATING", "PROCESS_READY", "ASSIGNMENT_READY", "ASSIGNED", "CONNECTING", "LIVE", "RESULT_PENDING", "COMPLETED", "CANCELLED", "EXPIRED", "FAILED"],
    "proposal": ["OPEN", "ACCEPTED", "DECLINED", "EXPIRED", "CANCELLED"],
    "match": ["ALLOCATING", "PROCESS_READY", "ASSIGNMENT_READY", "ASSIGNED", "CONNECTING", "LIVE", "RESULT_PENDING", "COMPLETED", "CANCELLED", "FAILED"]
  },
  "transitions": {
    "queue_ticket": {
      "QUEUED": ["PROPOSED", "CANCELLED", "EXPIRED"],
      "PROPOSED": ["QUEUED", "ACCEPTED", "CANCELLED", "EXPIRED"],
      "ACCEPTED": ["QUEUED", "ALLOCATING", "CANCELLED", "FAILED"],
      "ALLOCATING": ["PROCESS_READY", "FAILED", "CANCELLED"],
      "PROCESS_READY": ["ASSIGNMENT_READY", "FAILED", "CANCELLED"],
      "ASSIGNMENT_READY": ["ASSIGNED", "FAILED", "CANCELLED"],
      "ASSIGNED": ["CONNECTING", "FAILED", "CANCELLED"],
      "CONNECTING": ["LIVE", "FAILED", "EXPIRED"],
      "LIVE": ["RESULT_PENDING", "FAILED"],
      "RESULT_PENDING": ["COMPLETED", "FAILED"],
      "COMPLETED": [],
      "CANCELLED": [],
      "EXPIRED": [],
      "FAILED": []
    },
    "proposal": {
      "OPEN": ["ACCEPTED", "DECLINED", "EXPIRED", "CANCELLED"],
      "ACCEPTED": [],
      "DECLINED": [],
      "EXPIRED": [],
      "CANCELLED": []
    },
    "match": {
      "ALLOCATING": ["PROCESS_READY", "FAILED", "CANCELLED"],
      "PROCESS_READY": ["ASSIGNMENT_READY", "FAILED", "CANCELLED"],
      "ASSIGNMENT_READY": ["ASSIGNED", "FAILED", "CANCELLED"],
      "ASSIGNED": ["CONNECTING", "FAILED", "CANCELLED"],
      "CONNECTING": ["LIVE", "FAILED", "CANCELLED"],
      "LIVE": ["RESULT_PENDING", "FAILED"],
      "RESULT_PENDING": ["COMPLETED", "FAILED"],
      "COMPLETED": [],
      "CANCELLED": [],
      "FAILED": []
    }
  },
  "mutation_rules": {
    "required_headers": ["Idempotency-Key", "If-Match-Revision"],
    "same_key_same_payload": "return_original_result_without_new_revision",
    "same_key_different_payload": "reject_conflict_without_state_change",
    "stale_revision": "reject_conflict_without_state_change",
    "event_revision": "strictly_increases_per_resource",
    "event_recovery": "REST_get_by_resource_id_then_resume_from_next_revision"
  }
}