// Auto-generated by speckl-compile from KafkaKRaft
// DO NOT EDIT MANUALLY — regenerate from .speckdl source

export const KafkaKRaftState = {
  Candidate: 'candidate',
  Leader: 'leader',
} as const;
export type KafkaKRaftState = typeof KafkaKRaftState[keyof typeof KafkaKRaftState];




export class KafkaKRaftMachine {
  currentTerm: number;
  state: KafkaKRaftState;
  votedFor: Option(NodeId);
  log: LogEntry[];
  commitIndex: number;
  nextIndex: Map<NodeId, number>;
  matchIndex: Map<NodeId, number>;
  votesGranted: Set<NodeId>;
  decisionLog: any[] = [];

  constructor() {
    // No init block defined
  }

  RequestVote(candidate: NodeId, lastLogTerm: number, lastLogIndex: number) {
    if (!(this.state == KafkaKRaftState.Candidate)) throw new Error('Guard failed: this.state == KafkaKRaftState.Candidate');
    if (!(this.currentTerm >= lastLogTerm)) throw new Error('Guard failed: this.currentTerm >= lastLogTerm');
    this.votesGranted = new Set([...this.votesGranted, candidate]);
  }

  HandleRequestVoteRequest(candidate: NodeId, candidateTerm: number, lastLogTerm: number, lastLogIndex: number) {
    if (!(this.currentTerm >= candidateTerm)) throw new Error('Guard failed: this.currentTerm >= candidateTerm');
    this.votedFor = Some(candidate);
  }

  BecomeLeader() {
    if (!(this.state == KafkaKRaftState.Candidate)) throw new Error('Guard failed: this.state == KafkaKRaftState.Candidate');
    if (!(this.votesGranted.size >= 3)) throw new Error('Guard failed: this.votesGranted.size >= 3');
    this.state = KafkaKRaftState.Leader;
    this.commitIndex = length(this.log);
  }

  AppendEntries(follower: NodeId) {
    if (!(this.state == KafkaKRaftState.Leader)) throw new Error('Guard failed: this.state == KafkaKRaftState.Leader');
    this.log = append(this.log, newEntry);
  }



  // V1: Always(TermMonotonicity)
  async verify1(): Promise<boolean> {
    // TODO: Model-check or monitor
    // Temporal: Always(TermMonotonicity)
    return true;
  }
}