#!/usr/bin/env bash
#
# Pre-push hook: Validate builds
#
# This hook attempts to build the ops-jrz1 configuration
# to ensure it's valid before pushing to remote.

set -euo pipefail

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

# Get repository root
REPO_ROOT="$(git rev-parse --show-toplevel)"

echo "==> Running build validation..."

# Check if flake.nix exists
if [ ! -f "$REPO_ROOT/flake.nix" ]; then
    echo -e "${YELLOW}⚠ WARNING: flake.nix not found, skipping build validation${NC}"
    exit 0
fi

# Try to build ops-jrz1 configuration
if nix build "$REPO_ROOT#nixosConfigurations.ops-jrz1.config.system.build.toplevel" --no-link --show-trace 2>&1 | head -20; then
    echo -e "${GREEN}✓ Build validation passed${NC}"
    exit 0
else
    echo -e "${RED}✗ Build validation failed${NC}"
    echo ""
    echo "Push blocked. Please fix the build errors and try again."
    echo "Debug with: nix build .#nixosConfigurations.ops-jrz1 --show-trace"
    exit 1
fi