feat: add artifacts and metadata outputs (#327)

Co-authored-by: CrazyMax <crazy-max@users.noreply.github.com>

src/context.ts

@@ -1,5 +1,6 @@
 import * as os from 'os';
 import * as core from '@actions/core';
+import {issueCommand} from '@actions/core/lib/command';
 
 export const osPlat: string = os.platform();
 export const osArch: string = os.arch();
@@ -21,3 +22,8 @@ export async function getInputs(): Promise<Inputs> {
     installOnly: core.getBooleanInput('install-only')
   };
 }
+
+// FIXME: Temp fix https://github.com/actions/toolkit/issues/777
+export function setOutput(name: string, value: any): void {
+  issueCommand('set-output', {name}, value);
+}

src/goreleaser.ts

@@ -1,5 +1,7 @@
+import * as fs from 'fs';
 import * as path from 'path';
 import * as util from 'util';
+import yaml from 'js-yaml';
 import * as context from './context';
 import * as github from './github';
 import * as core from '@actions/core';
@@ -78,3 +80,32 @@ const getFilename = (distribution: string): string => {
   const suffix: string = distribSuffix(distribution);
   return util.format('goreleaser%s_%s_%s.%s', suffix, platform, arch, ext);
 };
+
+export async function getDistPath(yamlfile: string): Promise<string> {
+  const cfg = yaml.load(yamlfile);
+  return cfg.dist || 'dist';
+}
+
+export async function getArtifacts(distpath: string): Promise<string | undefined> {
+  const artifactsFile = path.join(distpath, 'artifacts.json');
+  if (!fs.existsSync(artifactsFile)) {
+    return undefined;
+  }
+  const content = fs.readFileSync(artifactsFile, {encoding: 'utf-8'}).trim();
+  if (content === 'null') {
+    return undefined;
+  }
+  return content;
+}
+
+export async function getMetadata(distpath: string): Promise<string | undefined> {
+  const metadataFile = path.join(distpath, 'metadata.json');
+  if (!fs.existsSync(metadataFile)) {
+    return undefined;
+  }
+  const content = fs.readFileSync(metadataFile, {encoding: 'utf-8'}).trim();
+  if (content === 'null') {
+    return undefined;
+  }
+  return content;
+}

src/main.ts

@@ -1,4 +1,6 @@
+import * as fs from 'fs';
 import * as path from 'path';
+import yargs from 'yargs';
 import * as context from './context';
 import * as git from './git';
 import * as goreleaser from './goreleaser';
@@ -30,6 +32,18 @@ async function run(): Promise<void> {
     const tag = await git.getTag();
     const isTagDirty = await git.isTagDirty(tag);
 
+    let yamlfile: string | unknown;
+    const argv = yargs.parse(inputs.args);
+    if (argv.config) {
+      yamlfile = argv.config;
+    } else {
+      ['.goreleaser.yaml', '.goreleaser.yml', 'goreleaser.yaml', 'goreleaser.yml'].forEach(f => {
+        if (fs.existsSync(f)) {
+          yamlfile = f;
+        }
+      });
+    }
+
     let snapshot = '';
     if (inputs.args.split(' ').indexOf('release') > -1) {
       if (isTagDirty) {
@@ -49,6 +63,23 @@ async function run(): Promise<void> {
         [key: string]: string;
       }
     });
+
+    if (typeof yamlfile === 'string') {
+      const artifacts = await goreleaser.getArtifacts(await goreleaser.getDistPath(yamlfile));
+      if (artifacts) {
+        await core.group(`Artifacts output`, async () => {
+          core.info(artifacts);
+          context.setOutput('artifacts', artifacts);
+        });
+      }
+      const metadata = await goreleaser.getMetadata(await goreleaser.getDistPath(yamlfile));
+      if (metadata) {
+        await core.group(`Metadata output`, async () => {
+          core.info(metadata);
+          context.setOutput('metadata', metadata);
+        });
+      }
+    }
   } catch (error) {
     core.setFailed(error.message);
   }