global enhancements

- create context object and remove github one
- more tests and improve mocks

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

src/context.ts

@@ -0,0 +1,71 @@
+import fs from 'fs';
+import os from 'os';
+import path from 'path';
+import * as tmp from 'tmp';
+import jwt_decode, {JwtPayload} from 'jwt-decode';
+import {GitHub} from '@actions/github/lib/utils';
+import * as github from '@actions/github';
+import {components as OctoOpenApiTypes} from '@octokit/openapi-types';
+
+export type ReposGetResponseData = OctoOpenApiTypes['schemas']['repository'];
+export interface Jwt extends JwtPayload {
+  ac?: string;
+}
+
+export class Context {
+  public serverURL: string;
+  public gitRef: string;
+  public buildGitContext: string;
+  public provenanceBuilderID: string;
+  public octokit: InstanceType<typeof GitHub>;
+
+  private readonly _tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'docker-actions-toolkit-')).split(path.sep).join(path.posix.sep);
+
+  constructor(githubToken?: string) {
+    this.gitRef = github.context.ref;
+    if (github.context.sha && this.gitRef && !this.gitRef.startsWith('refs/')) {
+      this.gitRef = `refs/heads/${github.context.ref}`;
+    }
+    if (github.context.sha && !this.gitRef.startsWith(`refs/pull/`)) {
+      this.gitRef = github.context.sha;
+    }
+    this.serverURL = process.env.GITHUB_SERVER_URL || 'https://github.com';
+    this.buildGitContext = `${this.serverURL}/${github.context.repo.owner}/${github.context.repo.repo}.git#${this.gitRef}`;
+    this.provenanceBuilderID = `${this.serverURL}/${github.context.repo.owner}/${github.context.repo.repo}/actions/runs/${github.context.runId}`;
+    this.octokit = github.getOctokit(`${githubToken}`);
+  }
+
+  public tmpDir(): string {
+    return this._tmpDir;
+  }
+
+  public tmpName(options?: tmp.TmpNameOptions): string {
+    return tmp.tmpNameSync(options);
+  }
+
+  public repoData(): Promise<ReposGetResponseData> {
+    return this.octokit.rest.repos.get({...github.context.repo}).then(response => response.data as ReposGetResponseData);
+  }
+
+  public parseRuntimeToken(): Jwt {
+    return jwt_decode<Jwt>(process.env['ACTIONS_RUNTIME_TOKEN'] || '');
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  public fromPayload(path: string): any {
+    return this.select(github.context.payload, path);
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  private select(obj: any, path: string): any {
+    if (!obj) {
+      return undefined;
+    }
+    const i = path.indexOf('.');
+    if (i < 0) {
+      return obj[path];
+    }
+    const key = path.slice(0, i);
+    return this.select(obj[key], path.slice(i + 1));
+  }
+}