Merge pull request #719 from peter-evans/add-to-lists

fix: add to labels and assignees instead of resetting

README.md

@@ -66,7 +66,13 @@ All inputs are **optional**. If not set, sensible defaults will be used.
 
 ### Action outputs
 
-The pull request number and URL are available as step outputs.
+The following outputs can be used by subsequent workflow steps.
+
+- `pull-request-number` - The pull request number.
+- `pull-request-url` - The URL of the pull request.
+- `pull-request-operation` - The pull request operation performed by the action, `created`, `updated` or `closed`.
+
+Step outputs can be accessed as in the following example.
 Note that in order to read the step outputs the action step must have an id.
 
 ```yml

dist/index.js

@@ -391,7 +391,20 @@ function createPullRequest(inputs) {
             inputs.base = result.base;
             if (result.hasDiffWithBase) {
                 // Create or update the pull request
-                yield githubHelper.createOrUpdatePullRequest(inputs, baseRemote.repository, branchRepository);
+                const pull = yield githubHelper.createOrUpdatePullRequest(inputs, baseRemote.repository, branchRepository);
+                // Set outputs
+                core.startGroup('Setting outputs');
+                core.setOutput('pull-request-number', pull.number);
+                core.setOutput('pull-request-url', pull.html_url);
+                if (pull.created) {
+                    core.setOutput('pull-request-operation', 'created');
+                }
+                else if (result.action == 'updated') {
+                    core.setOutput('pull-request-operation', 'updated');
+                }
+                // Deprecated
+                core.exportVariable('PULL_REQUEST_NUMBER', pull.number);
+                core.endGroup();
             }
             else {
                 // There is no longer a diff with the base
@@ -406,6 +419,10 @@ function createPullRequest(inputs) {
                             branchRemoteName,
                             `refs/heads/${inputs.branch}`
                         ]);
+                        // Set outputs
+                        core.startGroup('Setting outputs');
+                        core.setOutput('pull-request-operation', 'closed');
+                        core.endGroup();
                     }
                 }
             }
@@ -919,7 +936,8 @@ class GitHubHelper {
                 core.info(`Created pull request #${pull.number} (${headBranch} => ${inputs.base})`);
                 return {
                     number: pull.number,
-                    html_url: pull.html_url
+                    html_url: pull.html_url,
+                    created: true
                 };
             }
             catch (e) {
@@ -937,7 +955,8 @@ class GitHubHelper {
             core.info(`Updated pull request #${pull.number} (${headBranch} => ${inputs.base})`);
             return {
                 number: pull.number,
-                html_url: pull.html_url
+                html_url: pull.html_url,
+                created: false
             };
         });
     }
@@ -956,29 +975,20 @@ class GitHubHelper {
             const headBranch = `${headOwner}:${inputs.branch}`;
             // Create or update the pull request
             const pull = yield this.createOrUpdate(inputs, baseRepository, headBranch);
-            // Set outputs
-            core.startGroup('Setting outputs');
-            core.setOutput('pull-request-number', pull.number);
-            core.setOutput('pull-request-url', pull.html_url);
-            // Deprecated
-            core.exportVariable('PULL_REQUEST_NUMBER', pull.number);
-            core.endGroup();
-            // Set milestone, labels and assignees
-            const updateIssueParams = {};
+            // Apply milestone
             if (inputs.milestone) {
-                updateIssueParams['milestone'] = inputs.milestone;
                 core.info(`Applying milestone '${inputs.milestone}'`);
+                yield this.octokit.issues.update(Object.assign(Object.assign({}, this.parseRepository(baseRepository)), { issue_number: pull.number, milestone: inputs.milestone }));
             }
+            // Apply labels
             if (inputs.labels.length > 0) {
-                updateIssueParams['labels'] = inputs.labels;
                 core.info(`Applying labels '${inputs.labels}'`);
+                yield this.octokit.issues.addLabels(Object.assign(Object.assign({}, this.parseRepository(baseRepository)), { issue_number: pull.number, labels: inputs.labels }));
             }
+            // Apply assignees
             if (inputs.assignees.length > 0) {
-                updateIssueParams['assignees'] = inputs.assignees;
                 core.info(`Applying assignees '${inputs.assignees}'`);
-            }
-            if (Object.keys(updateIssueParams).length > 0) {
-                yield this.octokit.issues.update(Object.assign(Object.assign(Object.assign({}, this.parseRepository(baseRepository)), { issue_number: pull.number }), updateIssueParams));
+                yield this.octokit.issues.addAssignees(Object.assign(Object.assign({}, this.parseRepository(baseRepository)), { issue_number: pull.number, labels: inputs.assignees }));
             }
             // Request reviewers and team reviewers
             const requestReviewersParams = {};
@@ -1003,6 +1013,7 @@ class GitHubHelper {
                     }
                 }
             }
+            return pull;
         });
     }
 }

src/create-pull-request.ts

@@ -195,11 +195,24 @@ export async function createPullRequest(inputs: Inputs): Promise<void> {
 
     if (result.hasDiffWithBase) {
       // Create or update the pull request
-      await githubHelper.createOrUpdatePullRequest(
+      const pull = await githubHelper.createOrUpdatePullRequest(
         inputs,
         baseRemote.repository,
         branchRepository
       )
+
+      // Set outputs
+      core.startGroup('Setting outputs')
+      core.setOutput('pull-request-number', pull.number)
+      core.setOutput('pull-request-url', pull.html_url)
+      if (pull.created) {
+        core.setOutput('pull-request-operation', 'created')
+      } else if (result.action == 'updated') {
+        core.setOutput('pull-request-operation', 'updated')
+      }
+      // Deprecated
+      core.exportVariable('PULL_REQUEST_NUMBER', pull.number)
+      core.endGroup()
     } else {
       // There is no longer a diff with the base
       // Check we are in a state where a branch exists
@@ -215,6 +228,10 @@ export async function createPullRequest(inputs: Inputs): Promise<void> {
             branchRemoteName,
             `refs/heads/${inputs.branch}`
           ])
+          // Set outputs
+          core.startGroup('Setting outputs')
+          core.setOutput('pull-request-operation', 'closed')
+          core.endGroup()
         }
       }
     }

src/github-helper.ts

@@ -13,6 +13,7 @@ interface Repository {
 interface Pull {
   number: number
   html_url: string
+  created: boolean
 }
 
 export class GitHubHelper {
@@ -55,7 +56,8 @@ export class GitHubHelper {
       )
       return {
         number: pull.number,
-        html_url: pull.html_url
+        html_url: pull.html_url,
+        created: true
       }
     } catch (e) {
       if (
@@ -87,7 +89,8 @@ export class GitHubHelper {
     )
     return {
       number: pull.number,
-      html_url: pull.html_url
+      html_url: pull.html_url,
+      created: false
     }
   }
 
@@ -107,40 +110,38 @@ export class GitHubHelper {
     inputs: Inputs,
     baseRepository: string,
     headRepository: string
-  ): Promise<void> {
+  ): Promise<Pull> {
     const [headOwner] = headRepository.split('/')
     const headBranch = `${headOwner}:${inputs.branch}`
 
     // Create or update the pull request
     const pull = await this.createOrUpdate(inputs, baseRepository, headBranch)
 
-    // Set outputs
-    core.startGroup('Setting outputs')
-    core.setOutput('pull-request-number', pull.number)
-    core.setOutput('pull-request-url', pull.html_url)
-    // Deprecated
-    core.exportVariable('PULL_REQUEST_NUMBER', pull.number)
-    core.endGroup()
-
-    // Set milestone, labels and assignees
-    const updateIssueParams = {}
+    // Apply milestone
     if (inputs.milestone) {
-      updateIssueParams['milestone'] = inputs.milestone
       core.info(`Applying milestone '${inputs.milestone}'`)
-    }
-    if (inputs.labels.length > 0) {
-      updateIssueParams['labels'] = inputs.labels
-      core.info(`Applying labels '${inputs.labels}'`)
-    }
-    if (inputs.assignees.length > 0) {
-      updateIssueParams['assignees'] = inputs.assignees
-      core.info(`Applying assignees '${inputs.assignees}'`)
-    }
-    if (Object.keys(updateIssueParams).length > 0) {
       await this.octokit.issues.update({
         ...this.parseRepository(baseRepository),
         issue_number: pull.number,
-        ...updateIssueParams
+        milestone: inputs.milestone
+      })
+    }
+    // Apply labels
+    if (inputs.labels.length > 0) {
+      core.info(`Applying labels '${inputs.labels}'`)
+      await this.octokit.issues.addLabels({
+        ...this.parseRepository(baseRepository),
+        issue_number: pull.number,
+        labels: inputs.labels
+      })
+    }
+    // Apply assignees
+    if (inputs.assignees.length > 0) {
+      core.info(`Applying assignees '${inputs.assignees}'`)
+      await this.octokit.issues.addAssignees({
+        ...this.parseRepository(baseRepository),
+        issue_number: pull.number,
+        labels: inputs.assignees
       })
     }
 
@@ -169,5 +170,7 @@ export class GitHubHelper {
         }
       }
     }
+
+    return pull
   }
 }