#!/bin/bash
set -euo pipefail

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# Check if tools are installed
check_tool() {
    if ! command -v "$1" &> /dev/null; then
        echo -e "${RED}✗ $1 is not installed${NC}"
        echo "  Install with: make install-tools"
        return 1
    fi
    return 0
}

echo "🔍 Running validation checks..."

# Check required tools
MISSING_TOOLS=0
check_tool kubeconform || MISSING_TOOLS=1
check_tool yamllint || MISSING_TOOLS=1
check_tool kustomize || MISSING_TOOLS=1

if [ $MISSING_TOOLS -eq 1 ]; then
    exit 1
fi

# Validate Kubernetes manifests
echo -e "\n${YELLOW}Validating Kubernetes manifests...${NC}"
VALIDATION_FAILED=0

# Validate individual YAML files (skip CRDs that kubeconform doesn't handle well)
for file in apps/*.yaml storage/*.yaml; do
    if [ -f "$file" ]; then
        # Skip kustomization files as they're not Kubernetes resources
        if [[ "$file" == *"kustomization.yaml" ]]; then
            continue
        fi
        if ! kubeconform -strict -skip Certificate,Issuer,CertificateRequest,ClusterIssuer "$file" 2>&1; then
            echo -e "${RED}✗ Validation failed: $file${NC}"
            VALIDATION_FAILED=1
        else
            echo -e "${GREEN}✓ $file${NC}"
        fi
    fi
done

# Validate Kustomize builds
echo -e "\n${YELLOW}Validating Kustomize configurations...${NC}"
if ! kustomize build apps/ > /dev/null 2>&1; then
    echo -e "${RED}✗ Kustomize build failed: apps/${NC}"
    VALIDATION_FAILED=1
else
    echo -e "${GREEN}✓ apps/kustomization.yaml${NC}"
fi

if ! kustomize build storage/ > /dev/null 2>&1; then
    echo -e "${RED}✗ Kustomize build failed: storage/${NC}"
    VALIDATION_FAILED=1
else
    echo -e "${GREEN}✓ storage/kustomization.yaml${NC}"
fi

# Lint YAML files
echo -e "\n${YELLOW}Linting YAML files...${NC}"
if ! yamllint -c .yamllint apps/ storage/; then
    echo -e "${RED}✗ YAML linting failed${NC}"
    VALIDATION_FAILED=1
else
    echo -e "${GREEN}✓ YAML linting passed${NC}"
fi

# Summary
echo ""
if [ $VALIDATION_FAILED -eq 0 ]; then
    echo -e "${GREEN}✓ All validation checks passed!${NC}"
    exit 0
else
    echo -e "${RED}✗ Some validation checks failed${NC}"
    exit 1
fi