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Add GitHub action to label PRs based on number of files changed #4284

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Merged
DonnieBLT merged 4 commits into from
May 20, 2025
Merged

Add GitHub action to label PRs based on number of files changed #4284

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5086ede
Initial plan for issue
Copilot May 20, 2025
3958110
Add GitHub Action to label PRs by number of files changed
Copilot May 20, 2025
28b9e10
Enhance PR files changed label action with auto-creation and colors
Copilot May 20, 2025
a51fa50
Add improved error handling and logging to files changed label workflow
Copilot May 20, 2025
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142 changes: 142 additions & 0 deletions .github/workflows/add-files-changed-label.yml
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name: Add Files Changed Label

on:
pull_request:
types:
- opened
- synchronize
- reopened

permissions:
pull-requests: write
contents: read

jobs:
add_files_changed_label:
runs-on: ubuntu-latest
steps:
- name: Add Files Changed Label
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
PR_NUMBER: ${{ github.event.pull_request.number }}
REPO_OWNER: ${{ github.repository_owner }}
REPO_NAME: ${{ github.event.repository.name }}
run: |
echo "Starting Files Changed Label workflow for PR #$PR_NUMBER in $REPO_OWNER/$REPO_NAME"

# Get the number of files changed in the PR
echo "Fetching files changed information..."
FILES_API_RESPONSE=$(curl -s -X GET \
-H "Authorization: token $GITHUB_TOKEN" \
-H "Accept: application/vnd.github.v3+json" \
"https://api.github.com/repos/$REPO_OWNER/$REPO_NAME/pulls/$PR_NUMBER/files")

# Check if the API request was successful
if [[ "$FILES_API_RESPONSE" == *"message"*"Not Found"* ]]; then
echo "Error: Could not fetch PR files. API response indicates resource not found."
exit 1
fi

FILES_CHANGED=$(echo "$FILES_API_RESPONSE" | jq '. | length')

echo "Files changed in PR #$PR_NUMBER: $FILES_CHANGED"

# Determine the label based on the number of files changed
if [ "$FILES_CHANGED" -eq 1 ]; then
LABEL="files-changed: 1"
LABEL_COLOR="0e8a16" # Green
DESCRIPTION="PR changes 1 file"
elif [ "$FILES_CHANGED" -ge 2 ] && [ "$FILES_CHANGED" -le 5 ]; then
LABEL="files-changed: 2-5"
LABEL_COLOR="fbca04" # Yellow
DESCRIPTION="PR changes 2-5 files"
elif [ "$FILES_CHANGED" -ge 6 ] && [ "$FILES_CHANGED" -le 10 ]; then
LABEL="files-changed: 6-10"
LABEL_COLOR="ff9800" # Orange
DESCRIPTION="PR changes 6-10 files"
else
LABEL="files-changed: 11+"
LABEL_COLOR="e74c3c" # Red (using the project's preferred red color)
DESCRIPTION="PR changes 11+ files"
fi

echo "Determined label: $LABEL with color: $LABEL_COLOR"

# Get all labels in the repository to check if our label exists
echo "Checking if label exists in repository..."
ALL_LABELS_RESPONSE=$(curl -s -X GET \
-H "Authorization: token $GITHUB_TOKEN" \
-H "Accept: application/vnd.github.v3+json" \
"https://api.github.com/repos/$REPO_OWNER/$REPO_NAME/labels")

ALL_REPO_LABELS=$(echo "$ALL_LABELS_RESPONSE" | jq -r '.[].name')

# Create the label if it doesn't exist
if ! echo "$ALL_REPO_LABELS" | grep -q "$LABEL"; then
echo "Label '$LABEL' does not exist. Creating it now..."
CREATE_LABEL_RESPONSE=$(curl -s -X POST \
-H "Authorization: token $GITHUB_TOKEN" \
-H "Accept: application/vnd.github.v3+json" \
"https://api.github.com/repos/$REPO_OWNER/$REPO_NAME/labels" \
-d "{\"name\":\"$LABEL\",\"color\":\"$LABEL_COLOR\",\"description\":\"$DESCRIPTION\"}")

# Check if label creation was successful
if [[ "$CREATE_LABEL_RESPONSE" == *"message"* ]]; then
echo "Warning: There might be an issue creating the label. Response: $CREATE_LABEL_RESPONSE"
else
echo "Label '$LABEL' created successfully."
fi
else
echo "Label '$LABEL' already exists in the repository."
fi

# First, get all existing labels on the PR
echo "Getting existing labels on PR #$PR_NUMBER..."
PR_LABELS_RESPONSE=$(curl -s -X GET \
-H "Authorization: token $GITHUB_TOKEN" \
-H "Accept: application/vnd.github.v3+json" \
"https://api.github.com/repos/$REPO_OWNER/$REPO_NAME/issues/$PR_NUMBER/labels")

EXISTING_LABELS=$(echo "$PR_LABELS_RESPONSE" | jq -r '.[].name')

# Remove any existing files-changed labels
echo "Checking for existing 'files-changed' labels to remove..."
FOUND_EXISTING_LABEL=false
for EXISTING_LABEL in $EXISTING_LABELS; do
if [[ "$EXISTING_LABEL" == "files-changed:"* ]]; then
FOUND_EXISTING_LABEL=true
ENCODED_LABEL=$(echo "$EXISTING_LABEL" | sed 's/ /%20/g')
echo "Removing existing label: $EXISTING_LABEL (encoded as: $ENCODED_LABEL)"

REMOVE_RESPONSE=$(curl -s -X DELETE \
-H "Authorization: token $GITHUB_TOKEN" \
-H "Accept: application/vnd.github.v3+json" \
"https://api.github.com/repos/$REPO_OWNER/$REPO_NAME/issues/$PR_NUMBER/labels/$ENCODED_LABEL")

if [[ "$REMOVE_RESPONSE" == "" ]]; then
echo "Successfully removed label: $EXISTING_LABEL"
else
echo "Warning: There might be an issue removing the label. Response: $REMOVE_RESPONSE"
fi
fi
done

if [ "$FOUND_EXISTING_LABEL" = false ]; then
echo "No existing 'files-changed' labels found on PR #$PR_NUMBER."
fi

# Add the new label
echo "Adding label '$LABEL' to PR #$PR_NUMBER..."
ADD_LABEL_RESPONSE=$(curl -s -X POST \
-H "Authorization: token $GITHUB_TOKEN" \
-H "Accept: application/vnd.github.v3+json" \
"https://api.github.com/repos/$REPO_OWNER/$REPO_NAME/issues/$PR_NUMBER/labels" \
-d "{\"labels\":[\"$LABEL\"]}")

# Check if label was added successfully
if [[ "$ADD_LABEL_RESPONSE" == *"message"* ]]; then
echo "Error: Failed to add label. Response: $ADD_LABEL_RESPONSE"
exit 1
else
echo "Successfully applied label '$LABEL' to PR #$PR_NUMBER"
fi
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