feat: add additional release links to the release

A new option `addReleases` has been added.
Setting this option will add links to other releases
to the Github release body.

The option can be one of `false|"top"|"bottom"`.
The default is `false` to be backward compatible.

Closes #281

README.md

@@ -204,3 +204,13 @@ Each label name is generated with [Lodash template](https://lodash.com/docs#temp
 The `releasedLabels` ```['released<%= nextRelease.channel ? ` on @\${nextRelease.channel}` : "" %> from <%= branch.name %>']``` will generate the label:
 
 > released on @next from branch next
+
+#### addReleases
+
+Add links to other releases to the GitHub release body.
+
+Valid values for this option are `false`, `"top"` or `"bottom"`.
+
+##### addReleases example
+
+See [The introducing PR](https://github.com/semantic-release/github/pull/282) for an example on how it will look.

lib/definitions/errors.js

@@ -57,6 +57,12 @@ Your configuration for the \`assignees\` option is \`${stringify(assignees)}\`.`
     )}) if defined, must be an \`Array\` of non empty \`String\`.
 
 Your configuration for the \`releasedLabels\` option is \`${stringify(releasedLabels)}\`.`,
+  }),
+  EINVALIDADDRELEASES: ({addReleases}) => ({
+    message: 'Invalid `addReleases` option.',
+    details: `The [addReleases option](${linkify('README.md#options')}) if defined, must be one of \`false|top|bottom\`.
+
+Your configuration for the \`addReleases\` option is \`${stringify(addReleases)}\`.`,
   }),
   EINVALIDGITHUBURL: () => ({
     message: 'The git repository URL is not a valid GitHub URL.',

lib/get-release-links.js

@@ -0,0 +1,22 @@
+const {RELEASE_NAME} = require('./definitions/constants');
+
+const linkify = (releaseInfo) =>
+  `${
+    releaseInfo.url
+      ? releaseInfo.url.startsWith('http')
+        ? `[${releaseInfo.name}](${releaseInfo.url})`
+        : `${releaseInfo.name}: \`${releaseInfo.url}\``
+      : `\`${releaseInfo.name}\``
+  }`;
+
+const filterReleases = (releaseInfos) =>
+  releaseInfos.filter((releaseInfo) => releaseInfo.name && releaseInfo.name !== RELEASE_NAME);
+
+module.exports = (releaseInfos) =>
+  `${
+    filterReleases(releaseInfos).length > 0
+      ? `This release is also available on:\n${filterReleases(releaseInfos)
+          .map((releaseInfo) => `- ${linkify(releaseInfo)}`)
+          .join('\n')}`
+      : ''
+  }`;

lib/publish.js

@@ -28,11 +28,11 @@ module.exports = async (pluginConfig, context) => {
   // When there are no assets, we publish a release directly
   if (!assets || assets.length === 0) {
     const {
-      data: {html_url: url},
+      data: {html_url: url, id: releaseId},
     } = await github.repos.createRelease(release);
 
     logger.log('Published GitHub release: %s', url);
-    return {url, name: RELEASE_NAME};
+    return {url, name: RELEASE_NAME, id: releaseId};
   }
 
   // We'll create a draft release, append the assets to it, and then publish it.
@@ -94,5 +94,5 @@ module.exports = async (pluginConfig, context) => {
   } = await github.repos.updateRelease({owner, repo, release_id: releaseId, draft: false});
 
   logger.log('Published GitHub release: %s', url);
-  return {url, name: RELEASE_NAME};
+  return {url, name: RELEASE_NAME, id: releaseId};
 };

lib/resolve-config.js

@@ -12,6 +12,7 @@ module.exports = (
     labels,
     assignees,
     releasedLabels,
+    addReleases,
   },
   {env}
 ) => ({
@@ -30,4 +31,5 @@ module.exports = (
     : releasedLabels === false
     ? false
     : castArray(releasedLabels),
+  addReleases: isNil(addReleases) ? false : addReleases,
 });

lib/success.js

@@ -1,4 +1,4 @@
-const {isNil, uniqBy, template, flatten} = require('lodash');
+const {isNil, uniqBy, template, flatten, isEmpty} = require('lodash');
 const pFilter = require('p-filter');
 const AggregateError = require('aggregate-error');
 const issueParser = require('issue-parser');
@@ -9,6 +9,8 @@ const getClient = require('./get-client');
 const getSearchQueries = require('./get-search-queries');
 const getSuccessComment = require('./get-success-comment');
 const findSRIssues = require('./find-sr-issues');
+const {RELEASE_NAME} = require('./definitions/constants');
+const getReleaseLinks = require('./get-release-links');
 
 module.exports = async (pluginConfig, context) => {
   const {
@@ -17,6 +19,7 @@ module.exports = async (pluginConfig, context) => {
     nextRelease,
     releases,
     logger,
+    notes,
   } = context;
   const {
     githubToken,
@@ -27,6 +30,7 @@ module.exports = async (pluginConfig, context) => {
     failComment,
     failTitle,
     releasedLabels,
+    addReleases,
   } = resolveConfig(pluginConfig, context);
 
   const github = getClient({githubToken, githubUrl, githubApiPathPrefix, proxy});
@@ -140,6 +144,21 @@ module.exports = async (pluginConfig, context) => {
     );
   }
 
+  if (addReleases !== false && errors.length === 0) {
+    const ghRelease = releases.find((release) => release.name && release.name === RELEASE_NAME);
+    if (!isNil(ghRelease)) {
+      const ghRelaseId = ghRelease.id;
+      const additionalReleases = getReleaseLinks(releases);
+      if (!isEmpty(additionalReleases) && !isNil(ghRelaseId)) {
+        const newBody =
+          addReleases === 'top'
+            ? additionalReleases.concat('\n---\n', notes)
+            : notes.concat('\n---\n', additionalReleases);
+        await github.repos.updateRelease({owner, repo, release_id: ghRelaseId, body: newBody});
+      }
+    }
+  }
+
   if (errors.length > 0) {
     throw new AggregateError(errors);
   }

lib/verify.js

@@ -7,6 +7,7 @@ const getClient = require('./get-client');
 const getError = require('./get-error');
 
 const isNonEmptyString = (value) => isString(value) && value.trim();
+const oneOf = (enumArray) => (value) => enumArray.some((element) => element === value);
 const isStringOrStringArray = (value) =>
   isNonEmptyString(value) || (isArray(value) && value.every((string) => isNonEmptyString(string)));
 const isArrayOf = (validator) => (array) => isArray(array) && array.every((value) => validator(value));
@@ -24,6 +25,7 @@ const VALIDATORS = {
   labels: canBeDisabled(isArrayOf(isNonEmptyString)),
   assignees: isArrayOf(isNonEmptyString),
   releasedLabels: canBeDisabled(isArrayOf(isNonEmptyString)),
+  addReleases: canBeDisabled(oneOf(['bottom', 'top'])),
 };
 
 module.exports = async (pluginConfig, context) => {

test/get-release-links.test.js

@@ -0,0 +1,74 @@
+const test = require('ava');
+const getReleaseLinks = require('../lib/get-release-links');
+const {RELEASE_NAME} = require('../lib/definitions/constants');
+
+test('Comment for release with multiple releases', (t) => {
+  const releaseInfos = [
+    {name: RELEASE_NAME, url: 'https://github.com/release'},
+    {name: 'Http release', url: 'https://release.com/release'},
+    {name: 'npm release', url: 'https://npm.com/release'},
+  ];
+  const comment = getReleaseLinks(releaseInfos);
+
+  t.is(
+    comment,
+    `This release is also available on:
+- [Http release](https://release.com/release)
+- [npm release](https://npm.com/release)`
+  );
+});
+
+test('Release with missing release URL', (t) => {
+  const releaseInfos = [
+    {name: RELEASE_NAME, url: 'https://github.com/release'},
+    {name: 'Http release', url: 'https://release.com/release'},
+    {name: 'npm release'},
+  ];
+  const comment = getReleaseLinks(releaseInfos);
+
+  t.is(
+    comment,
+    `This release is also available on:
+- [Http release](https://release.com/release)
+- \`npm release\``
+  );
+});
+
+test('Release with one release', (t) => {
+  const releaseInfos = [
+    {name: RELEASE_NAME, url: 'https://github.com/release'},
+    {name: 'Http release', url: 'https://release.com/release'},
+  ];
+  const comment = getReleaseLinks(releaseInfos);
+
+  t.is(
+    comment,
+    `This release is also available on:
+- [Http release](https://release.com/release)`
+  );
+});
+
+test('Release with non http releases', (t) => {
+  const releaseInfos = [{name: 'S3', url: 's3://my-bucket/release-asset'}];
+  const comment = getReleaseLinks(releaseInfos);
+
+  t.is(
+    comment,
+    `This release is also available on:
+- S3: \`s3://my-bucket/release-asset\``
+  );
+});
+
+test('Release with only github release', (t) => {
+  const releaseInfos = [{name: RELEASE_NAME, url: 'https://github.com/release'}];
+  const comment = getReleaseLinks(releaseInfos);
+
+  t.is(comment, '');
+});
+
+test('Comment with no release object', (t) => {
+  const releaseInfos = [];
+  const comment = getReleaseLinks(releaseInfos);
+
+  t.is(comment, '');
+});