Add undeploy script and ensure namespace function for Kubernetes management

package.json

@@ -32,6 +32,7 @@
     "setup": "./scripts/setup.sh",
     "deploy": "./scripts/deploy.sh",
     "deploy:k8s": "./scripts/deploy-k8s.sh",
+    "undeploy:k8s": "./scripts/undeploy-k8s.sh",
     "validate:env": "./scripts/validate-env.sh",
     "validate:deployment": "./scripts/validate-deployment.sh",
     "seed:production": "bun scripts/seed-production.js",

scripts/deploy-k8s.sh

@@ -94,17 +94,34 @@ validate_env() {
     fi
 }
 
+# Function to ensure namespace exists
+ensure_namespace() {
+    if ! kubectl get namespace "$NAMESPACE" &> /dev/null; then
+        print_info "Creating namespace: $NAMESPACE"
+        kubectl create namespace "$NAMESPACE"
+        print_success "Created namespace: $NAMESPACE"
+    else
+        print_info "Using existing namespace: $NAMESPACE"
+    fi
+}
+
 # Function to apply Kubernetes manifests
 apply_manifests() {
     local manifest_dir="$1"
     
     print_info "Applying Kubernetes manifests from $manifest_dir"
     
-    # Apply non-template files first
+    # Apply static files that don't have template counterparts
     for manifest_file in "$K8S_DIR"/*.yaml; do
         if [[ -f "$manifest_file" && ! "$manifest_file" =~ \.template$ ]]; then
-            print_info "Applying: $(basename "$manifest_file")"
+            local basename_file=$(basename "$manifest_file")
-            kubectl apply -f "$manifest_file"
+            local template_file="$K8S_DIR/${basename_file}.template"
+            
+            # Only apply if there's no corresponding template file
+            if [[ ! -f "$template_file" ]]; then
+                print_info "Applying static file: $basename_file"
+                kubectl apply -f "$manifest_file" -n "$NAMESPACE"
+            fi
         fi
     done
     
@@ -112,8 +129,8 @@ apply_manifests() {
     if [[ -d "$TEMP_DIR" ]]; then
         for manifest_file in "$TEMP_DIR"/*.yaml; do
             if [[ -f "$manifest_file" ]]; then
-                print_info "Applying: $(basename "$manifest_file")"
+                print_info "Applying template: $(basename "$manifest_file")"
-                kubectl apply -f "$manifest_file"
+                kubectl apply -f "$manifest_file" -n "$NAMESPACE"
             fi
         done
     fi
@@ -133,15 +150,15 @@ show_status() {
     echo ""
     
     print_info "Pods:"
-    kubectl get pods -l app=rxminder
+    kubectl get pods -l app=rxminder -n "$NAMESPACE"
     echo ""
     
     print_info "Services:"
-    kubectl get services -l app=rxminder
+    kubectl get services -l app=rxminder -n "$NAMESPACE"
     echo ""
     
     print_info "Ingress:"
-    kubectl get ingress -l app=rxminder
+    kubectl get ingress -l app=rxminder -n "$NAMESPACE"
     echo ""
     
     if [[ -n "${INGRESS_HOST:-}" ]]; then
@@ -236,9 +253,15 @@ main() {
     # Load environment variables
     load_env "$env_file"
     
+    # Set default namespace if not provided in environment
+    NAMESPACE="${NAMESPACE:-rxminder}"
+    
     # Validate required environment variables
     validate_env
     
+    # Ensure namespace exists
+    ensure_namespace
+    
     # Process templates
     substitute_templates
     

scripts/undeploy-k8s.sh

@@ -0,0 +1,298 @@
+#!/bin/bash
+
+# Kubernetes deployment script with environment variable substitution
+# This script processes template files and applies them to Kubernetes
+
+set -euo pipefail
+
+# Color codes for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+# Script directory
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
+K8S_DIR="$PROJECT_ROOT/k8s"
+TEMP_DIR="/tmp/meds-k8s-deploy"
+
+# Function to print colored output
+print_info() {
+    echo -e "${BLUE}ℹ️  $1${NC}"
+}
+
+print_success() {
+    echo -e "${GREEN}✅ $1${NC}"
+}
+
+print_warning() {
+    echo -e "${YELLOW}⚠️  $1${NC}"
+}
+
+print_error() {
+    echo -e "${RED}❌ $1${NC}"
+}
+
+# Function to load environment variables
+load_env() {
+    local env_file="$1"
+    if [[ -f "$env_file" ]]; then
+        print_info "Loading environment from $env_file"
+        # Export variables from .env file
+        set -a
+        source "$env_file"
+        set +a
+    else
+        print_warning "Environment file $env_file not found"
+    fi
+}
+
+# Function to substitute environment variables in template files
+substitute_templates() {
+    print_info "Processing template files..."
+    
+    # Create temporary directory
+    mkdir -p "$TEMP_DIR"
+    
+    # Process each template file
+    for template_file in "$K8S_DIR"/*.template; do
+        if [[ -f "$template_file" ]]; then
+            local filename=$(basename "$template_file" .template)
+            local output_file="$TEMP_DIR/$filename"
+            
+            print_info "Processing template: $filename"
+            
+            # Substitute environment variables
+            envsubst < "$template_file" > "$output_file"
+            
+            print_success "Generated: $output_file"
+        fi
+    done
+}
+
+# Function to validate required environment variables
+validate_env() {
+    local required_vars=("INGRESS_HOST")
+    local missing_vars=()
+    
+    for var in "${required_vars[@]}"; do
+        if [[ -z "${!var:-}" ]]; then
+            missing_vars+=("$var")
+        fi
+    done
+    
+    if [[ ${#missing_vars[@]} -gt 0 ]]; then
+        print_error "Missing required environment variables:"
+        for var in "${missing_vars[@]}"; do
+            echo "  - $var"
+        done
+        echo ""
+        echo "Please set these variables in your .env file or environment."
+        exit 1
+    fi
+}
+
+# Function to ensure namespace exists
+ensure_namespace() {
+    if ! kubectl get namespace "$NAMESPACE" &> /dev/null; then
+        print_info "Creating namespace: $NAMESPACE"
+        kubectl create namespace "$NAMESPACE"
+        print_success "Created namespace: $NAMESPACE"
+    else
+        print_info "Using existing namespace: $NAMESPACE"
+    fi
+}
+
+# Function to apply Kubernetes manifests
+apply_manifests() {
+    local manifest_dir="$1"
+    
+    print_info "Applying Kubernetes manifests from $manifest_dir"
+    
+    # Apply static files that don't have template counterparts
+    for manifest_file in "$K8S_DIR"/*.yaml; do
+        if [[ -f "$manifest_file" && ! "$manifest_file" =~ \.template$ ]]; then
+            local basename_file=$(basename "$manifest_file")
+            local template_file="$K8S_DIR/${basename_file}.template"
+            
+            # Only apply if there's no corresponding template file
+            if [[ ! -f "$template_file" ]]; then
+                print_info "Applying static file: $basename_file"
+                kubectl apply -f "$manifest_file" -n "$NAMESPACE"
+            fi
+        fi
+    done
+    
+    # Apply processed template files
+    if [[ -d "$TEMP_DIR" ]]; then
+        for manifest_file in "$TEMP_DIR"/*.yaml; do
+            if [[ -f "$manifest_file" ]]; then
+                print_info "Applying template: $(basename "$manifest_file")"
+                kubectl apply -f "$manifest_file" -n "$NAMESPACE"
+            fi
+        done
+    fi
+}
+
+# Function to cleanup temporary files
+cleanup() {
+    if [[ -d "$TEMP_DIR" ]]; then
+        print_info "Cleaning up temporary files..."
+        rm -rf "$TEMP_DIR"
+    fi
+}
+
+# Function to show deployment status
+show_status() {
+    print_info "Deployment Status:"
+    echo ""
+    
+    print_info "Pods:"
+    kubectl get pods -l app=rxminder -n "$NAMESPACE"
+    echo ""
+    
+    print_info "Services:"
+    kubectl get services -l app=rxminder -n "$NAMESPACE"
+    echo ""
+    
+    print_info "Ingress:"
+    kubectl get ingress -l app=rxminder -n "$NAMESPACE"
+    echo ""
+    
+    if [[ -n "${INGRESS_HOST:-}" ]]; then
+        print_success "Application should be available at: http://$INGRESS_HOST"
+    fi
+}
+
+# Function to show usage
+usage() {
+    echo "Usage: $0 [OPTIONS]"
+    echo ""
+    echo "Options:"
+    echo "  -e, --env FILE       Environment file to load (default: .env)"
+    echo "  -d, --dry-run        Show what would be applied without applying"
+    echo "  -s, --status         Show deployment status only"
+    echo "  -c, --cleanup        Cleanup temporary files and exit"
+    echo "  -h, --help           Show this help message"
+    echo ""
+    echo "Examples:"
+    echo "  $0                   Deploy with default .env file"
+    echo "  $0 -e .env.prod      Deploy with production environment"
+    echo "  $0 --dry-run         Preview what would be deployed"
+    echo "  $0 --status          Check deployment status"
+}
+
+# Main function
+main() {
+    local env_file=".env"
+    local dry_run=false
+    local status_only=false
+    local cleanup_only=false
+    
+    # Parse command line arguments
+    while [[ $# -gt 0 ]]; do
+        case $1 in
+            -e|--env)
+                env_file="$2"
+                shift 2
+            ;;
+            -d|--dry-run)
+                dry_run=true
+                shift
+            ;;
+            -s|--status)
+                status_only=true
+                shift
+            ;;
+            -c|--cleanup)
+                cleanup_only=true
+                shift
+            ;;
+            -h|--help)
+                usage
+                exit 0
+            ;;
+            *)
+                print_error "Unknown option: $1"
+                usage
+                exit 1
+            ;;
+        esac
+    done
+    
+    # Handle cleanup only
+    if [[ "$cleanup_only" == true ]]; then
+        cleanup
+        exit 0
+    fi
+    
+    # Handle status only
+    if [[ "$status_only" == true ]]; then
+        show_status
+        exit 0
+    fi
+    
+    # Check if kubectl is available
+    if ! command -v kubectl &> /dev/null; then
+        print_error "kubectl is not installed or not in PATH"
+        exit 1
+    fi
+    
+    # Check if we can connect to Kubernetes cluster
+    if ! kubectl cluster-info &> /dev/null; then
+        print_error "Cannot connect to Kubernetes cluster"
+        print_info "Make sure your kubectl is configured correctly"
+        exit 1
+    fi
+    
+    print_info "🚀 Deploying Medication Reminder App to Kubernetes"
+    echo ""
+    
+    # Load environment variables
+    load_env "$env_file"
+    
+    # Set default namespace if not provided in environment
+    NAMESPACE="${NAMESPACE:-rxminder}"
+    
+    # Validate required environment variables
+    validate_env
+    
+    # Ensure namespace exists
+    ensure_namespace
+    
+    # Process templates
+    substitute_templates
+    
+    if [[ "$dry_run" == true ]]; then
+        print_info "Dry run mode - showing generated manifests:"
+        echo ""
+        
+        for manifest_file in "$TEMP_DIR"/*.yaml; do
+            if [[ -f "$manifest_file" ]]; then
+                echo "=== $(basename "$manifest_file") ==="
+                cat "$manifest_file"
+                echo ""
+            fi
+        done
+    else
+        # Apply manifests
+        apply_manifests "$K8S_DIR"
+        
+        print_success "Deployment completed!"
+        echo ""
+        
+        # Show status
+        show_status
+    fi
+    
+    # Cleanup
+    cleanup
+}
+
+# Trap to ensure cleanup happens
+trap cleanup EXIT
+
+# Run main function
+main "$@"