pre-push

#!/bin/bash
# pre-push hook - Prevents pushing when local and remote have diverged
#
# Install: cp scripts/git-hooks/pre-push .git/hooks/pre-push && chmod +x .git/hooks/pre-push
# Or run: make install-hooks

set -e

remote="$1"
url="$2"

# Only check pushes to origin
if [[ "$remote" != "origin" ]]; then
    exit 0
fi

# Get current branch
branch=$(git rev-parse --abbrev-ref HEAD)

# Skip for new branches (no upstream)
if ! git rev-parse --verify "origin/$branch" &>/dev/null; then
    exit 0
fi

# Check for divergence
local_only=$(git rev-list "origin/$branch..$branch" --count 2>/dev/null || echo "0")
remote_only=$(git rev-list "$branch..origin/$branch" --count 2>/dev/null || echo "0")

if [[ "$local_only" -gt 0 ]] && [[ "$remote_only" -gt 0 ]]; then
    echo ""
    echo "ERROR: Branches have diverged!"
    echo ""
    echo "  Local has $local_only commit(s) not on remote"
    echo "  Remote has $remote_only commit(s) not on local"
    echo ""
    echo "To fix:"
    echo "  1. git fetch origin"
    echo "  2. git rebase origin/$branch  # or git merge origin/$branch"
    echo "  3. Resolve any conflicts"
    echo "  4. git push"
    echo ""
    exit 1
fi

# Verify build passes before push (optional - can be slow)
if [[ -f "go.mod" ]]; then
    echo "Verifying build..."
    if ! go build ./... 2>/dev/null; then
        echo ""
        echo "ERROR: Build failed! Fix build errors before pushing."
        echo ""
        exit 1
    fi
fi

exit 0