Merge pull request #15 from yumemi-inc/support_all_event

Support all events

action.yml

@@ -23,9 +23,23 @@ inputs:
     required: false
     default: 'Report from Gradle Dependency Diff Report action'
   head-ref:
-    description: 'Target commit reference.'
+    description: 'Current branch, tag, or commit SHA to compare with base.'
     required: false
     default: ${{ github.sha }}
+  base-ref:
+    description: 'Branch, tag, or commit SHA as a basis for comparison.'
+    required: false
+    default: |-
+      ${{
+        (github.event_name == 'pull_request' && github.base_ref) ||
+        (github.event_name == 'push' && (startsWith(github.event.before, '0000') && github.event.repository.default_branch || github.event.before)) ||
+        (github.event_name == 'merge_group' && github.event.merge_group.base_sha) ||
+        github.event.repository.default_branch
+      }}
+  use-merge-base:
+    description: 'Whether to compare with the latest common commit.'
+    required: false
+    default: 'false'
 outputs:
   exists-diff:
     description: 'Whether there are any differences in dependencies.'
@@ -43,21 +57,22 @@ runs:
         SCRIPT: ${{ inputs.script }}
         REPORT_TITLE: ${{ inputs.report-title }}
         HEAD_REF: ${{ inputs.head-ref }}
+        BASE_REF: ${{ inputs.base-ref }}
+        USE_MERGE_BASE: ${{ inputs.use-merge-base }}
         IS_VALID_EVENT: ${{ contains(fromJSON('["pull_request","pull_request_target","merge_group"]'), github.event_name) }}
         GH_REPO: ${{ github.repository }} # for GitHub CLI
         GH_TOKEN: ${{ github.token }} # for GitHub CLI
       run: |
         echo "::debug::git version: $(git --version)"
         echo "::debug::gh version: $(gh --version | tr '\n' ' ')"
+        echo "::debug::jq version: $(jq --version)"
         source "$GITHUB_ACTION_PATH/raise_error.sh"
 
         readonly WORK_DIR="$GITHUB_ACTION_PATH"
 
         mkdir "$WORK_DIR/tools"
         mkdir "$WORK_DIR/deps"
 
-        if [ "$IS_VALID_EVENT" != 'true' ]; then raise_error "This action supports 'pull_request', 'pull_request_target' and 'merge_group' events."; fi
-
         modules="$(echo "$MODULES" | xargs)"
         configuration="$(echo "$CONFIGURATION" | xargs)"
 
@@ -92,15 +107,23 @@ runs:
           raise_error "Incorrect checksum for dependency-tree-diff.jar."
         fi
 
-        if [ -z "$HEAD_REF" ]; then raise_error "Specify 'head-ref' input."; fi
+        if [[ -z "$HEAD_REF" || -z "$BASE_REF" ]]; then raise_error "Specify 'head-ref' and 'base-ref' inputs."; fi
 
         gh repo clone "$GH_REPO" "$WORK_DIR/sources" -- --depth 1 --no-checkout > /dev/null 2>&1 || raise_error "May not have 'contents: read' permission."
         # ref: https://github.com/actions/checkout/blob/72f2cec99f417b1a1c5e2e88945068983b7965f9/src/git-auth-helper.ts#L55-L63
         cd "$WORK_DIR/sources" && git config --local 'http.https://github.com/.extraheader' "AUTHORIZATION: basic $(echo -n "x-access-token:$GH_TOKEN"|base64)"
 
-        git fetch -q --depth 2 origin "$HEAD_REF" > /dev/null 2>&1 || raise_error "'head-ref' input is not valid."
+        git fetch -q --depth 1 origin "$HEAD_REF" > /dev/null 2>&1 || raise_error "'head-ref' input is not valid."
         head_sha="$(git rev-parse FETCH_HEAD)"
-        base_sha="$(git rev-parse FETCH_HEAD~1)"
+
+        git fetch -q --depth 1 origin "$BASE_REF" > /dev/null 2>&1 || raise_error "'base-ref' input is not valid."
+        base_sha="$(git rev-parse FETCH_HEAD)"
+
+        if [ "$USE_MERGE_BASE" == 'true' ]; then
+          merge_base_sha="$(gh api "repos/{owner}/{repo}/compare/${base_sha}...${head_sha}" | jq -r '.merge_base_commit.sha')"
+          git fetch -q --depth 1 origin "$merge_base_sha"
+          base_sha="$(git rev-parse FETCH_HEAD)"
+        fi
 
         # do not create a file with the input string
         function create_file_name() {