import * as core from "@actions/core";
import * as github from "@actions/github";
import consoleLogLevel from "console-log-level";
import * as path from 'path';

import { getRequiredEnvParam, isLocalRun } from "./util";

export const getApiClient = function(githubAuth: string, githubUrl: string, allowLocalRun = false) {
  if (isLocalRun() && !allowLocalRun) {
    throw new Error('Invalid API call in local run');
  }
  return new github.GitHub(
    {
      auth: githubAuth,
      baseUrl: getApiUrl(githubUrl),
      userAgent: "CodeQL Action",
      log: consoleLogLevel({ level: "debug" })
    });
};

function getApiUrl(githubUrl: string): string {
  const url = new URL(githubUrl);

  // If we detect this is trying to be to github.com
  // then return with a fixed canonical URL.
  if (url.hostname === 'github.com' || url.hostname === 'api.github.com') {
    return 'https://api.github.com';
  }

  // Add the /api/v3 API prefix
  url.pathname = path.join(url.pathname, 'api', 'v3');
  return url.toString();
}

// Temporary function to aid in the transition to running on and off of github actions.
// Once all code has been coverted this function should be removed or made canonical
// and called only from the action entrypoints.
export function getActionsApiClient(allowLocalRun = false) {
  return getApiClient(
    core.getInput('token'),
    getRequiredEnvParam('GITHUB_SERVER_URL'),
    allowLocalRun);
}