From 8e0bbe901eec580bc081dad84eb23fd4cac9b140 Mon Sep 17 00:00:00 2001
From: Dmitry <cinnabarflower@gmail.com>
Date: Sun, 16 Nov 2025 23:06:26 +0300
Subject: [PATCH] o2

---
 tools/deploy/web-app/config.sh | 80 +++++++++++++++++++++++++++++++++-
 tools/deploy/web-app/deploy.sh | 20 +++++++++
 2 files changed, 98 insertions(+), 2 deletions(-)

diff --git a/tools/deploy/web-app/config.sh b/tools/deploy/web-app/config.sh
index f8cc48a..937bd61 100644
--- a/tools/deploy/web-app/config.sh
+++ b/tools/deploy/web-app/config.sh
@@ -171,7 +171,11 @@ check_build_directory() {
 # Function to build Flutter web app for production
 build_flutter_app() {
     print_status "Building Flutter web app for production..."
-    flutter build $FLUTTER_BUILD_TARGET $FLUTTER_BUILD_MODE --dart-define=API_BASE_URL=$API_BASE_URL --dart2js-optimization=O2
+    # Use -O2 optimization and disable wasm to reduce memory usage during compilation
+    flutter build $FLUTTER_BUILD_TARGET $FLUTTER_BUILD_MODE \
+        --dart-define=API_BASE_URL=$API_BASE_URL \
+        --dart2js-optimization=O2 \
+        --no-wasm
     
     if [ $? -ne 0 ]; then
         print_error "Flutter build failed"
@@ -217,6 +221,78 @@ restart_nginx() {
     print_success "Nginx restarted successfully"
 }
 
+# Function to setup swap if needed
+setup_swap() {
+    print_status "Checking swap configuration..."
+    
+    # Check current swap
+    CURRENT_SWAP=$(free -m | awk '/^Swap:/ {print $2}')
+    RECOMMENDED_SWAP=2048  # 2GB
+    
+    if [ "$CURRENT_SWAP" -lt "$RECOMMENDED_SWAP" ]; then
+        print_warning "Current swap is ${CURRENT_SWAP}MB, recommended is ${RECOMMENDED_SWAP}MB"
+        print_status "Setting up temporary swap file..."
+        
+        # Create swap file if it doesn't exist
+        if [ ! -f /swapfile ]; then
+            dd if=/dev/zero of=/swapfile bs=1M count=$RECOMMENDED_SWAP status=progress
+            chmod 600 /swapfile
+            mkswap /swapfile
+            swapon /swapfile
+            
+            # Optimize swap usage (don't add to fstab - it's temporary)
+            sysctl vm.swappiness=10
+            
+            print_success "Temporary swap file created and activated (${RECOMMENDED_SWAP}MB)"
+            # Mark that we created it for cleanup
+            touch /tmp/.swap_created_by_deploy
+        else
+            # Swap exists, activate it if not active
+            if ! swapon --show | grep -q '/swapfile'; then
+                swapon /swapfile
+                print_info "Existing swap file activated"
+            else
+                print_info "Swap file already active"
+            fi
+        fi
+    else
+        print_success "Swap is already configured (${CURRENT_SWAP}MB)"
+    fi
+}
+
+# Function to remove temporary swap after deployment
+remove_swap() {
+    print_status "Checking if temporary swap needs cleanup..."
+    
+    # Only remove swap if we created it during this deployment
+    if [ -f /tmp/.swap_created_by_deploy ]; then
+        print_status "Removing temporary swap file..."
+        
+        # Deactivate swap
+        if swapon --show | grep -q '/swapfile'; then
+            swapoff /swapfile
+            print_info "Swap deactivated"
+        fi
+        
+        # Remove swap file
+        if [ -f /swapfile ]; then
+            rm -f /swapfile
+            print_success "Temporary swap file removed"
+        fi
+        
+        # Remove fstab entry if exists
+        if grep -q '/swapfile' /etc/fstab 2>/dev/null; then
+            sed -i '/\/swapfile/d' /etc/fstab
+            print_info "Removed swap entry from fstab"
+        fi
+        
+        # Remove marker file
+        rm -f /tmp/.swap_created_by_deploy
+    else
+        print_info "No temporary swap to remove (swap was pre-existing or already cleaned)"
+    fi
+}
+
 # =============================================================================
 # EXPORT ALL VARIABLES
 # =============================================================================
@@ -224,7 +300,7 @@ restart_nginx() {
 # Make sure all variables are exported
 export -f print_status print_warning print_error print_success print_info
 export -f check_project_root check_build_directory build_flutter_app
-export -f create_backup set_permissions test_nginx restart_nginx
+export -f create_backup set_permissions test_nginx restart_nginx setup_swap remove_swap
 
 print_info "Configuration loaded successfully"
 print_info "Server: $SERVER_USER@$SERVER_IP"
diff --git a/tools/deploy/web-app/deploy.sh b/tools/deploy/web-app/deploy.sh
index e23cc07..026126a 100755
--- a/tools/deploy/web-app/deploy.sh
+++ b/tools/deploy/web-app/deploy.sh
@@ -30,6 +30,23 @@ print_status "Deploying on server..."
 ssh "$SERVER_USER@$SERVER_IP" << EOF
     set -e
     
+    # Setup swap if needed (helps with memory-intensive operations)
+    $(declare -f setup_swap)
+    $(declare -f remove_swap)
+    $(declare -f print_status)
+    $(declare -f print_warning)
+    $(declare -f print_success)
+    $(declare -f print_info)
+    RED='$RED'
+    GREEN='$GREEN'
+    YELLOW='$YELLOW'
+    BLUE='$BLUE'
+    NC='$NC'
+    setup_swap
+    
+    # Trap to ensure swap cleanup on exit
+    trap 'remove_swap' EXIT
+    
     # Create web directory if it doesn't exist
     mkdir -p $WEB_ROOT
     
@@ -98,6 +115,9 @@ ssh "$SERVER_USER@$SERVER_IP" << EOF
     ufw allow $FIREWALL_ALLOW_SSH
     ufw --force enable
     
+    # Clean up temporary swap
+    remove_swap
+    
     echo "Deployment completed successfully!"
     echo "Application is available at: https://memo-cards.online"
 EOF