#!/bin/bash
# Pre-commit hook: prefer small commits; allow at most two staged paths.
# Enable with: git config core.hooksPath .githooks

staged_files=$(git diff --cached --name-only)
file_count=$(echo "$staged_files" | grep -v '^$' | wc -l | tr -d ' ')

if [ "$file_count" -gt 2 ]; then
    echo "❌ COMMIT PROTOCOL VIOLATION: Attempting to commit $file_count files (maximum 2)"
    echo ""
    echo "Prefer tiny commits; combining more than two paths needs splitting or a hook bypass."
    echo ""
    echo "Staged files:"
    echo "$staged_files"
    echo ""
    echo "See .github/prompts/commit.prompt.md"
    exit 1
fi

if [ "$file_count" -eq 2 ]; then
    echo "✅ Committing two files:"
    echo "$staged_files"
    exit 0
fi

if [ "$file_count" -eq 1 ]; then
    echo "✅ Committing single file: $(echo "$staged_files" | head -1)"
    exit 0
fi

echo "⚠️  No files staged for commit"
exit 1