Add lables to all GitHub repos in an org

add_label.sh

#!/bin/bash

# ==============================================================================
# CONFIGURATION - Edit these values
# ==============================================================================
ORG_NAME="your-org-name"
LABEL_NAME="needs-review"
LABEL_COLOR="FF0000"
LABEL_DESCRIPTION="PRs that need review"

# ==============================================================================
# SCRIPT - No need to edit below this line
# ==============================================================================

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
COLORRESET='\033[0m'

# Default dry run to false
DRY_RUN=false

# Parse command line arguments
while [[ $# -gt 0 ]]; do
	case $1 in
		-n|--dry-run)
			DRY_RUN=true
			shift
			;;
		-h|--help)
			echo "Usage: $0 [options]"
			echo ""
			echo "Options:"
			echo "  -n, --dry-run  Show what would be done without making changes"
			echo "  -h, --help	 Show this help message"
			echo ""
			echo "Configuration is set in the script file itself."
			exit 0
			;;
		*)
			echo -e "${RED}Unknown option: $1${COLORRESET}"
			echo "Use -h or --help for usage information"
			exit 1
			;;
	esac
done

# Check if gh is installed
if ! command -v gh &> /dev/null; then
	echo -e "${RED}Error: GitHub CLI (gh) is not installed${COLORRESET}"
	echo ""
	echo "Install it with Homebrew:"
	echo "  brew install gh"
	echo ""
	echo "Then authenticate:"
	echo "  gh auth login"
	exit 1
fi

# Check if authenticated
if ! gh auth status &> /dev/null; then
	echo -e "${RED}Error: Not authenticated with GitHub CLI${COLORRESET}"
	echo ""
	echo "Please run:"
	echo "  gh auth login"
	exit 1
fi

# Validate configuration
if [ "$ORG_NAME" = "your-org-name" ] || [ -z "$ORG_NAME" ]; then
	echo -e "${RED}Error: Please set ORG_NAME in the script configuration${COLORRESET}"
	exit 1
fi

if [ -z "$LABEL_NAME" ]; then
	echo -e "${RED}Error: Please set LABEL_NAME in the script configuration${COLORRESET}"
	exit 1
fi

# Display configuration
echo -e "${YELLOW}=== Configuration ===${COLORRESET}"
echo "Organization: $ORG_NAME"
echo "Label Name: $LABEL_NAME"
echo "Label Color: #$LABEL_COLOR"
echo "Description: ${LABEL_DESCRIPTION:-'(none)'}"
echo ""

if [ "$DRY_RUN" = true ]; then
	echo -e "${YELLOW}🔍 DRY RUN MODE - No changes will be made${COLORRESET}"
	echo ""
fi

# Confirm before proceeding (unless dry run)
if [ "$DRY_RUN" = false ]; then
	echo -e "${YELLOW}This will add the label to ALL repositories in $ORG_NAME${COLORRESET}"
	read -p "Continue? (y/N) " -n 1 -r
	echo
	if [[ ! $REPLY =~ ^[Yy]$ ]]; then
		echo "Cancelled."
		exit 0
	fi
	echo ""
fi

# Get all repositories in the organization
echo -e "${YELLOW}Fetching repositories for $ORG_NAME...${COLORRESET}"
REPOS=$(gh repo list "$ORG_NAME" --limit 1000 --json name -q '.[].name' 2>&1)

if [ $? -ne 0 ]; then
	echo -e "${RED}Error fetching repositories: $REPOS${COLORRESET}"
	exit 1
fi

# Check if we got any repos
if [ -z "$REPOS" ]; then
	echo -e "${RED}No repositories found for organization: $ORG_NAME${COLORRESET}"
	exit 1
fi

# Count total repositories
TOTAL=$(echo "$REPOS" | wc -l | tr -d ' ')
echo -e "Found ${GREEN}$TOTAL${COLORRESET} repositories"
echo ""

# Counters
SUCCESS=0
EXISTS=0
FAILED=0
ARCHIVED=0
CURRENT=0

# Process each repository
for REPO in $REPOS; do
	CURRENT=$((CURRENT + 1))

	printf "[%3d/%3d] %-50s " "$CURRENT" "$TOTAL" "$REPO"

	if [ "$DRY_RUN" = true ]; then
		if gh label list --repo "$ORG_NAME/$REPO" --limit 1000 2>/dev/null | grep -q "^$LABEL_NAME"; then
			echo -e "${YELLOW}→ Would skip (already exists)${COLORRESET}"
			EXISTS=$((EXISTS + 1))
		else
			echo -e "${GREEN}✓ Would add label${COLORRESET}"
			SUCCESS=$((SUCCESS + 1))
		fi
	else
		if [ -n "$LABEL_DESCRIPTION" ]; then
			OUTPUT=$(gh label create "$LABEL_NAME" \
				--repo "$ORG_NAME/$REPO" \
				--color "$LABEL_COLOR" \
				--description "$LABEL_DESCRIPTION" \
				2>&1)
		else
			OUTPUT=$(gh label create "$LABEL_NAME" \
				--repo "$ORG_NAME/$REPO" \
				--color "$LABEL_COLOR" \
				2>&1)
		fi

		if [ $? -eq 0 ]; then
			echo -e "${GREEN}✓ Added${NC}"
			SUCCESS=$((SUCCESS + 1))
		else
			if echo "$OUTPUT" | grep -q "already exists"; then
				echo -e "${YELLOW}→ Exists${NC}"
				EXISTS=$((EXISTS + 1))
			elif echo "$OUTPUT" | grep -q "Repository was archived so is read-only"; then
				echo -e "${RED}✗ Archived${NC}"
				ARCHIVED=$((ARCHIVED + 1))
			else
				echo -e "${RED}✗ Failed${NC}"
				FAILED=$((FAILED + 1))
				# echo "  Error: $OUTPUT"
			fi
		fi
	fi
done

# Summary
echo ""
echo -e "${YELLOW}=== Summary ===${COLORRESET}"
echo "Total repositories: $TOTAL"

if [ "$DRY_RUN" = true ]; then
	echo -e "${GREEN}Would add label to: $SUCCESS repos${COLORRESET}"
	echo -e "${YELLOW}Would skip (exists): $EXISTS repos${COLORRESET}"
	if [ $ARCHIVED -gt 0 ]; then
		echo -e "${RED}Would skip (archived): $ARCHIVED repos${NC}"
	fi
else
	echo -e "${GREEN}Successfully added: $SUCCESS${COLORRESET}"
	echo -e "${YELLOW}Already existed: $EXISTS${COLORRESET}"
	if [ $ARCHIVED -gt 0 ]; then
		echo -e "${RED}Archived (read-only): $ARCHIVED${NC}"
	fi
	if [ $FAILED -gt 0 ]; then
		echo -e "${RED}Failed: $FAILED${COLORRESET}"
	fi
fi

echo ""
echo "Done!"

# Exit with error if any failed (in non-dry-run mode)
if [ "$DRY_RUN" = false ] && [ $FAILED -gt 0 ]; then
	exit 1
fi