import type { SerializedProjectCommand } from "../models/project-command.model.js";
import type { ProjectRevisionSource } from "./project-revision.store.js";

export type ProjectHistoryDirection = "undo" | "redo";

export interface ProjectHistoryState {
  projectId: string;
  currentRevision: number;
  undoDepth: number;
  redoDepth: number;
  undoChangeSetId: string | null;
  redoChangeSetId: string | null;
}

export interface ProjectHistoryCommand {
  changeSetId: string;
  command: SerializedProjectCommand;
}

export interface ProjectRevisionSummary {
  revisionId: string;
  changeSetId: string;
  revisionNumber: number;
  createdAtIso: string;
  actorId: string | null;
  source: ProjectRevisionSource;
  description: string | null;
  commandType: string;
  payloadSchemaVersion: number;
}

export interface ProjectRevisionPage {
  projectId: string;
  currentRevision: number;
  revisions: ProjectRevisionSummary[];
  nextBeforeRevision: number | null;
}

export interface ListProjectRevisionsInput {
  projectId: string;
  limit: number;
  beforeRevision?: number;
}

export interface ProjectHistoryStore {
  getState(projectId: string): ProjectHistoryState | null;
  listRevisions(
    input: ListProjectRevisionsInput
  ): ProjectRevisionPage | null;
  listRevisionsByNumbers(
    projectId: string,
    revisionNumbers: number[]
  ): ProjectRevisionSummary[];
  getNextCommand(
    projectId: string,
    direction: ProjectHistoryDirection
  ): ProjectHistoryCommand | null;
}