Add lgtm

Signed-off-by: Masaki Kimura <[email protected]>

Author: mkimuram

.github/workflows/command-lgtm.yml

@@ -0,0 +1,9 @@
+name: lgtm command
+on:
+  repository_dispatch:
+    types: [lgtm-command]
+jobs:
+  lgtm:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: mkimuram/test-gha/plugins/lgtm@main

.github/workflows/slash-command-dispatch.yml

@@ -18,6 +18,7 @@ jobs:
             unassign
             kind
             remove-kind
+            lgtm
             retest
             meow
             woof

plugins/lgtm/action.yml

@@ -0,0 +1,26 @@
+name: 'Lgtm'
+description: 'Add lgtm label to pr'
+runs:
+  using: "composite"
+  steps:
+    - name: Add lgtm label to pr
+      shell: bash
+      run: |
+        label="lgtm"
+        # lgtm is only for pr
+        [ -n "${PR_NUM}" ] || false
+        # TODO: Check if actor has right to lgtm
+        # If no args add lgtm label
+        if [ -z "${ARGS}" ];then
+          echo "{\"labels\":[\"${label}\"]}" | \
+            gh api repos/${REPO}/issues/${ISSUE_NUM}/labels -X POST --input -
+        # If args is cancel remove lgtm label
+        elif [[ "${ARGS}" == "cancel" ]];then
+          gh api repos/${REPO}/issues/${ISSUE_NUM}/labels/${label} -X DELETE
+        fi
+      env:
+        REPO: ${{ github.repository }}
+        ISSUE_NUM: ${{ github.event.client_payload.github.payload.issue.number }}
+        PR_NUM: ${{ github.event.client_payload.pull_request.number }}
+        ARGS: ${{ github.event.client_payload.slash_command.args.unnamed.all }}
+        GITHUB_TOKEN: ${{ github.token }}

plugins/lgtm/usage.txt

@@ -0,0 +1 @@
+| `/lgtm` | `/lgtm [cancel] ` | Adds or removes the 'lgtm' label which is typically used to gate merging. |