Add a collapse-after option for categories

README.md

@@ -249,6 +249,16 @@ Pull requests with the label "feature" or "fix" will now be grouped together:
 Adding such labels to your PRs can be automated by using the embedded Autolabeler functionality (see below),
 [PR Labeler](https://github.com/TimonVS/pr-labeler-action) or [Probot Auto Labeler](https://github.com/probot/autolabeler).
 
+Optionally you can add a `collapse-after` entry to your category item, if the category has more than the defined `collapse-after` pull requests then it will show all pull requests collapsed for that category. Append the `collapse-after` integer to your category as following:
+
+```yml
+categories:
+  - title: '⬆️ Dependencies'
+    collapse-after: 3
+    labels:
+      - 'dependencies'
+```
+
 ## Exclude Pull Requests
 
 With the `exclude-labels` option you can exclude pull requests from the release notes using labels. For example, append the following to your `.github/release-drafter.yml` file:

dist/index.js

@@ -129288,17 +129288,17 @@ const categorizePullRequests = (pullRequests, config) => {
     .filter(getFilterIncludedPullRequests(includeLabels))
     .filter((pullRequest) => filterUncategorizedPullRequests(pullRequest))
 
-  categorizedPullRequests.map((category) => {
-    filteredPullRequests.map((pullRequest) => {
+  for (const category of categorizedPullRequests) {
+    for (const pullRequest of filteredPullRequests) {
       // lets categorize some pull request based on labels
       // note that having the same label in multiple categories
       // then it is intended to "duplicate" the pull request into each category
       const labels = pullRequest.labels.nodes
       if (labels.some((label) => category.labels.includes(label.name))) {
         category.pullRequests.push(pullRequest)
       }
-    })
-  })
+    }
+  }
 
   return [uncategorizedPullRequests, categorizedPullRequests]
 }
@@ -129347,17 +129347,42 @@ const generateChangeLog = (mergedPullRequests, config) => {
     changeLog.push(pullRequestToString(uncategorizedPullRequests), '\n\n')
   }
 
-  categorizedPullRequests.map((category, index) => {
-    if (category.pullRequests.length > 0) {
+  for (const [index, category] of categorizedPullRequests.entries()) {
+    if (category.pullRequests.length === 0) {
+      continue
+    }
+
+    // Add the category title to the changelog.
+    changeLog.push(
+      template(config['category-template'], { $TITLE: category.title }),
+      '\n\n'
+    )
+
+    // Define the pull requests into a single string.
+    const pullRequestString = pullRequestToString(category.pullRequests)
+
+    // Determine the collapse status.
+    const shouldCollapse =
+      category['collapse-after'] !== 0 &&
+      category.pullRequests.length > category['collapse-after']
+
+    // Add the pull requests to the changelog.
+    if (shouldCollapse) {
       changeLog.push(
-        template(config['category-template'], { $TITLE: category.title }),
+        '<details>',
+        '\n',
+        `<summary>${category.pullRequests.length} changes</summary>`,
         '\n\n',
-        pullRequestToString(category.pullRequests)
+        pullRequestString,
+        '\n',
+        '</details>'
       )
-
-      if (index + 1 !== categorizedPullRequests.length) changeLog.push('\n\n')
+    } else {
+      changeLog.push(pullRequestString)
     }
-  })
+
+    if (index + 1 !== categorizedPullRequests.length) changeLog.push('\n\n')
+  }
 
   return changeLog.join('').trim()
 }
@@ -129647,6 +129672,7 @@ const schema = (context) => {
           Joi.object()
             .keys({
               title: Joi.string().required(),
+              'collapse-after': Joi.number().integer().min(0).default(0),
               label: Joi.string(),
               labels: Joi.array().items(Joi.string()).single().default([]),
             })

lib/releases.js

@@ -178,17 +178,17 @@ const categorizePullRequests = (pullRequests, config) => {
     .filter(getFilterIncludedPullRequests(includeLabels))
     .filter((pullRequest) => filterUncategorizedPullRequests(pullRequest))
 
-  categorizedPullRequests.map((category) => {
-    filteredPullRequests.map((pullRequest) => {
+  for (const category of categorizedPullRequests) {
+    for (const pullRequest of filteredPullRequests) {
       // lets categorize some pull request based on labels
       // note that having the same label in multiple categories
       // then it is intended to "duplicate" the pull request into each category
       const labels = pullRequest.labels.nodes
       if (labels.some((label) => category.labels.includes(label.name))) {
         category.pullRequests.push(pullRequest)
       }
-    })
-  })
+    }
+  }
 
   return [uncategorizedPullRequests, categorizedPullRequests]
 }
@@ -237,17 +237,42 @@ const generateChangeLog = (mergedPullRequests, config) => {
     changeLog.push(pullRequestToString(uncategorizedPullRequests), '\n\n')
   }
 
-  categorizedPullRequests.map((category, index) => {
-    if (category.pullRequests.length > 0) {
+  for (const [index, category] of categorizedPullRequests.entries()) {
+    if (category.pullRequests.length === 0) {
+      continue
+    }
+
+    // Add the category title to the changelog.
+    changeLog.push(
+      template(config['category-template'], { $TITLE: category.title }),
+      '\n\n'
+    )
+
+    // Define the pull requests into a single string.
+    const pullRequestString = pullRequestToString(category.pullRequests)
+
+    // Determine the collapse status.
+    const shouldCollapse =
+      category['collapse-after'] !== 0 &&
+      category.pullRequests.length > category['collapse-after']
+
+    // Add the pull requests to the changelog.
+    if (shouldCollapse) {
       changeLog.push(
-        template(config['category-template'], { $TITLE: category.title }),
+        '<details>',
+        '\n',
+        `<summary>${category.pullRequests.length} changes</summary>`,
         '\n\n',
-        pullRequestToString(category.pullRequests)
+        pullRequestString,
+        '\n',
+        '</details>'
       )
-
-      if (index + 1 !== categorizedPullRequests.length) changeLog.push('\n\n')
+    } else {
+      changeLog.push(pullRequestString)
     }
-  })
+
+    if (index + 1 !== categorizedPullRequests.length) changeLog.push('\n\n')
+  }
 
   return changeLog.join('').trim()
 }

lib/schema.js

@@ -111,6 +111,7 @@ const schema = (context) => {
           Joi.object()
             .keys({
               title: Joi.string().required(),
+              'collapse-after': Joi.number().integer().min(0).default(0),
               label: Joi.string(),
               labels: Joi.array().items(Joi.string()).single().default([]),
             })

schema.json

@@ -199,6 +199,11 @@
           "title": {
             "type": "string"
           },
+          "collapse-after": {
+            "default": 0,
+            "type": "integer",
+            "minimum": 0
+          },
           "label": {
             "type": "string"
           },

test/fixtures/config/config-with-categories-with-collapse-after.yml

@@ -0,0 +1,18 @@
+template: |
+  # What's Changed
+
+  $CHANGES
+
+categories:
+  - title: 🚀 All the things!
+    collapse-after: 3
+    labels:
+      - feature
+      - enhancement
+      - fix
+      - bugfix
+      - bug
+      - sentry
+      - skip-changelog
+  - title: 👻 Maintenance
+    label: chore

test/index.test.js

@@ -1198,6 +1198,61 @@ describe('release-drafter', () => {
 
         expect.assertions(1)
       })
+
+      it('categorizes pull requests with a collapsed category', async () => {
+        getConfigMock('config-with-categories-with-collapse-after.yml')
+
+        nock('https://api.github.com')
+          .get('/repos/toolmantim/release-drafter-test-project/releases')
+          .query(true)
+          .reply(200, [releasePayload])
+
+        nock('https://api.github.com')
+          .post('/graphql', (body) =>
+            body.query.includes('query findCommitsWithAssociatedPullRequests')
+          )
+          .reply(200, graphqlCommitsMergeCommit)
+
+        nock('https://api.github.com')
+          .post(
+            '/repos/toolmantim/release-drafter-test-project/releases',
+            (body) => {
+              expect(body).toMatchInlineSnapshot(`
+                Object {
+                  "body": "# What's Changed
+
+                * Update dependencies (#4) @TimonVS
+
+                ## 🚀 All the things!
+
+                <details>
+                <summary>4 changes</summary>
+
+                * Add documentation (#5) @TimonVS
+                * Bug fixes (#3) @TimonVS
+                * Add big feature (#2) @TimonVS
+                * 👽 Add alien technology (#1) @TimonVS
+                </details>
+                ",
+                  "draft": true,
+                  "name": "",
+                  "prerelease": false,
+                  "tag_name": "",
+                  "target_commitish": "refs/heads/master",
+                }
+              `)
+              return true
+            }
+          )
+          .reply(200, releasePayload)
+
+        await probot.receive({
+          name: 'push',
+          payload: pushPayload,
+        })
+
+        expect.assertions(1)
+      })
     })
 
     describe('with exclude-labels config', () => {

test/releases.test.js

@@ -187,5 +187,51 @@ describe('releases', () => {
         * Adds @<!---->nullable annotations to the 1\\\\*1+2\\\\*4 test in \\\\\`tests.java\\\\\` (#0) @Happypig375"
       `)
     })
+    it('adds proper details/summary markdown when collapse-after is set and more than 3 PRs', () => {
+      const config = {
+        ...baseConfig,
+        categories: [{ title: 'Bugs', 'collapse-after': 3, labels: 'bug' }],
+      }
+      const changelog = generateChangeLog(pullRequests, config)
+      expect(changelog).toMatchInlineSnapshot(`
+        "* B2 (#2) @ghost
+        * Rename __confgs\\\\confg.yml to __configs\\\\config.yml (#7) @ghost
+        * Adds @nullable annotations to the 1*1+2*4 test in \`tests.java\` (#0) @Happypig375
+
+        ## Bugs
+
+        <details>
+        <summary>5 changes</summary>
+
+        * A1 (#1) @ghost
+        * Adds missing <example> (#3) @jetersen
+        * \`#code_block\` (#4) @jetersen
+        * Fixes #4 (#5) @Happypig375
+        * 2*2 should equal to 4*1 (#6) @jetersen
+        </details>"
+      `)
+    })
+    it('does not add proper details/summary markdown when collapse-after is set and less than 3 PRs', () => {
+      const config = {
+        ...baseConfig,
+        categories: [
+          { title: 'Feature', 'collapse-after': 3, labels: 'feature' },
+        ],
+      }
+      const changelog = generateChangeLog(pullRequests, config)
+      expect(changelog).toMatchInlineSnapshot(`
+        "* A1 (#1) @ghost
+        * Adds missing <example> (#3) @jetersen
+        * \`#code_block\` (#4) @jetersen
+        * Fixes #4 (#5) @Happypig375
+        * 2*2 should equal to 4*1 (#6) @jetersen
+        * Rename __confgs\\\\confg.yml to __configs\\\\config.yml (#7) @ghost
+
+        ## Feature
+
+        * B2 (#2) @ghost
+        * Adds @nullable annotations to the 1*1+2*4 test in \`tests.java\` (#0) @Happypig375"
+      `)
+    })
   })
 })