#!/bin/bash
# validate-helm.sh - Validate Helm charts
# Used by CI/CD pipelines to ensure Helm charts are valid

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_ROOT="$(cd "$SCRIPT_DIR/../../.." && pwd)"
HELM_DIR="${REPO_ROOT}/devops/helm"

echo "=== Helm Chart Validation ==="
echo "Helm directory: $HELM_DIR"

# Check if helm is installed
if ! command -v helm &>/dev/null; then
  echo "::error::Helm is not installed"
  exit 1
fi

# Check if helm directory exists
if [[ ! -d "$HELM_DIR" ]]; then
  echo "::warning::Helm directory not found at $HELM_DIR"
  exit 0
fi

FAILED=0

# Find all Chart.yaml files (indicates a Helm chart)
while IFS= read -r -d '' chart_file; do
  chart_dir="$(dirname "$chart_file")"
  chart_name="$(basename "$chart_dir")"

  echo "=== Validating chart: $chart_name ==="

  # Lint the chart
  if helm lint "$chart_dir" 2>&1; then
    echo "✓ Chart '$chart_name' lint passed"
  else
    echo "✗ Chart '$chart_name' lint failed"
    FAILED=1
    continue
  fi

  # Template the chart (dry-run)
  if helm template "$chart_name" "$chart_dir" --debug >/dev/null 2>&1; then
    echo "✓ Chart '$chart_name' template succeeded"
  else
    echo "✗ Chart '$chart_name' template failed"
    FAILED=1
  fi

done < <(find "$HELM_DIR" -name "Chart.yaml" -print0)

if [[ $FAILED -eq 1 ]]; then
  echo "::error::One or more Helm charts failed validation"
  exit 1
fi

echo "=== All Helm charts valid! ==="