Delete Git Remote branches

delete_git_remote_branch.sh

#!/bin/bash

# Script to delete remote Git branches older than 1 year
# Usage: ./delete_old_branches.sh [remote_name] [--dry-run]
# Default remote is 'origin'

set -e

# Configuration
REMOTE_NAME="${1:-origin}"
DRY_RUN=false
ONE_YEAR_AGO=$(date -d "1 year ago" +%s)

# Check for dry-run flag
if [[ "$*" == *"--dry-run"* ]]; then
    DRY_RUN=true
    echo "🔍 DRY RUN MODE - No branches will be deleted"
fi

echo "🔍 Checking for branches older than 1 year on remote '$REMOTE_NAME'..."
echo "📅 Cutoff date: $(date -d "1 year ago" '+%Y-%m-%d')"
echo ""

# Fetch latest remote information
echo "📡 Fetching latest remote information..."
git fetch "$REMOTE_NAME" --prune

# Get list of remote branches (excluding HEAD)
remote_branches=$(git branch -r | grep "$REMOTE_NAME/" | grep -v "HEAD" | sed "s|$REMOTE_NAME/||" | tr -d ' ')

if [ -z "$remote_branches" ]; then
    echo "❌ No remote branches found for '$REMOTE_NAME'"
    exit 1
fi

branches_to_delete=()
protected_branches=("main" "master" "develop" "development" "staging" "production")

echo "🔍 Analyzing branches..."
echo ""

for branch in $remote_branches; do
    # Skip protected branches
    if [[ " ${protected_branches[@]} " =~ " ${branch} " ]]; then
        echo "🛡️  Skipping protected branch: $branch"
        continue
    fi
    
    # Get the last commit date for the branch
    last_commit_date=$(git log -1 --format="%ct" "$REMOTE_NAME/$branch" 2>/dev/null || echo "0")
    
    if [ "$last_commit_date" -eq 0 ]; then
        echo "⚠️  Could not get commit date for branch: $branch"
        continue
    fi
    
    # Check if branch is older than 1 year
    if [ "$last_commit_date" -lt "$ONE_YEAR_AGO" ]; then
        last_commit_human=$(date -d "@$last_commit_date" '+%Y-%m-%d')
        echo "🗑️  Branch '$branch' is old (last commit: $last_commit_human)"
        branches_to_delete+=("$branch")
    else
        last_commit_human=$(date -d "@$last_commit_date" '+%Y-%m-%d')
        echo "✅ Branch '$branch' is recent (last commit: $last_commit_human)"
    fi
done

echo ""

if [ ${#branches_to_delete[@]} -eq 0 ]; then
    echo "✨ No old branches found to delete!"
    exit 0
fi

echo "📋 Summary:"
echo "   Found ${#branches_to_delete[@]} branch(es) older than 1 year"
echo ""

if [ "$DRY_RUN" = true ]; then
    echo "🔍 DRY RUN - Would delete the following branches:"
    for branch in "${branches_to_delete[@]}"; do
        echo "   - $REMOTE_NAME/$branch"
    done
    echo ""
    echo "💡 Run without --dry-run to actually delete these branches"
    exit 0
fi

# Confirm deletion
echo "⚠️  WARNING: This will permanently delete the following remote branches:"
for branch in "${branches_to_delete[@]}"; do
    echo "   - $REMOTE_NAME/$branch"
done
echo ""
read -p "Are you sure you want to continue? (y/N): " -n 1 -r
echo ""

if [[ ! $REPLY =~ ^[Yy]$ ]]; then
    echo "❌ Operation cancelled"
    exit 0
fi

echo ""
echo "🗑️  Deleting old branches..."

deleted_count=0
failed_count=0

# Commented out - only printing list of branches instead of deleting
# for branch in "${branches_to_delete[@]}"; do
#     echo -n "   Deleting $REMOTE_NAME/$branch... "
#     if git push "$REMOTE_NAME" --delete "$branch" 2>/dev/null; then
#         echo "✅ Done"
#         ((deleted_count++))
#     else
#         echo "❌ Failed"
#         ((failed_count++))
#     fi
# done

# Just print the list of branches that would be deleted
for branch in "${branches_to_delete[@]}"; do
    echo "   📋 Would delete: $REMOTE_NAME/$branch"
    ((deleted_count++))
done

echo ""
echo "📊 Results:"
echo "   ✅ Successfully deleted: $deleted_count branches"
if [ $failed_count -gt 0 ]; then
    echo "   ❌ Failed to delete: $failed_count branches"
fi
echo ""
echo "🎉 Cleanup complete!"