import { ServerConnection } from '@jupyterlab/services';

import { requestAPI } from './request';

export interface VersionEntry {
  id: string;
  timestamp: number;
  name: string;
  description: string;
  hash: string;
  size: number;
}

export interface CommitResponse {
  entry: VersionEntry | null;
  skipped: boolean;
  reason: string | null;
  message: string | null;
}

export async function commitSnapshot(
  serverSettings: ServerConnection.ISettings,
  path: string,
  content: unknown,
  name: string,
  description: string
): Promise<CommitResponse> {
  return requestAPI<CommitResponse>('notebook-version/commit', serverSettings, {
    method: 'POST',
    body: JSON.stringify({ path, content, name, description }),
    headers: { 'Content-Type': 'application/json' }
  });
}

export async function listSnapshots(
  serverSettings: ServerConnection.ISettings,
  path: string
): Promise<VersionEntry[]> {
  const endpoint = `notebook-version/list?path=${encodeURIComponent(path)}`;
  const response = await requestAPI<{ versions: VersionEntry[] }>(
    endpoint,
    serverSettings
  );
  return response.versions;
}

export async function getSnapshotContent(
  serverSettings: ServerConnection.ISettings,
  path: string,
  id: string
): Promise<unknown> {
  const endpoint = `notebook-version/content?path=${encodeURIComponent(path)}&id=${encodeURIComponent(id)}`;
  return requestAPI<unknown>(endpoint, serverSettings);
}