feat: add input to enable gpg commit signing

src/create-or-update-branch.ts

@@ -91,7 +91,8 @@ export async function createOrUpdateBranch(
   base: string,
   branch: string,
   branchRemoteName: string,
-  signoff: boolean
+  signoff: boolean,
+  gpgSign: boolean
 ): Promise<CreateOrUpdateBranchResult> {
   // Get the working base.
   // When a ref, it may or may not be the actual base.
@@ -124,6 +125,9 @@ export async function createOrUpdateBranch(
     if (signoff) {
       params.push('--signoff')
     }
+    if (gpgSign) {
+      params.push('--gpg-sign')
+    }
     await git.commit(params)
   }
 

src/create-pull-request.ts

@@ -16,6 +16,7 @@ export interface Inputs {
   committer: string
   author: string
   signoff: boolean
+  gpgSign: boolean
   branch: string
   deleteBranch: boolean
   branchSuffix: string
@@ -173,7 +174,8 @@ export async function createPullRequest(inputs: Inputs): Promise<void> {
       inputs.base,
       inputs.branch,
       branchRemoteName,
-      inputs.signoff
+      inputs.signoff,
+      inputs.gpgSign
     )
     core.endGroup()
 

src/main.ts

@@ -12,6 +12,7 @@ async function run(): Promise<void> {
       committer: core.getInput('committer'),
       author: core.getInput('author'),
       signoff: core.getInput('signoff') === 'true',
+      gpgSign: core.getInput('gpg-sign') === 'true',
       branch: core.getInput('branch'),
       deleteBranch: core.getInput('delete-branch') === 'true',
       branchSuffix: core.getInput('branch-suffix'),