#!/bin/bash
# ==============================================================================
# SECHPOINT WALLARM SMART DEPLOYER - V6 (FULL BINARY INSTALL + PORT SELECTION)
# ==============================================================================

YELLOW='\033[1;33m'; GREEN='\033[0;32m'; RED='\033[0;31m'; BLUE='\033[0;34m'; NC='\033[0m'; BOLD='\033[1m'
LOG_FILE="/var/log/wallarm-deploy.log"
EU_DATA_NODES=("api.wallarm.com" "node-data0.eu1.wallarm.com")
US_DATA_NODES=("us1.api.wallarm.com" "node-data0.us1.wallarm.com")

# --- Initialization ---
sudo touch "$LOG_FILE" && sudo chmod 644 "$LOG_FILE"
exec > >(tee -a "$LOG_FILE") 2>&1 

clear
echo -e "${BLUE}${BOLD}==========================================================${NC}"
echo -e "${BLUE}${BOLD}      Wallarm Full Binary & Container Deployer V6       ${NC}"
echo -e "${BLUE}${BOLD}==========================================================${NC}"

# --- 1. PRE-FLIGHT & CONNECTIVITY ---

check_connectivity() {
    echo -e "\n${YELLOW}[1/5] Testing Cloud & Registry Connectivity...${NC}"
    
    read -p "  Wallarm Cloud (US/EU) [US]: " CLOUD_SEL
    CLOUD_SEL=${CLOUD_SEL^^}; CLOUD_SEL=${CLOUD_SEL:-US}
    
    local nodes_to_test=("${US_DATA_NODES[@]}")
    [[ "$CLOUD_SEL" == "EU" ]] && nodes_to_test=("${EU_DATA_NODES[@]}")

    echo "  Testing $CLOUD_SEL Cloud Endpoints..."
    for node in "${nodes_to_test[@]}"; do
        if curl -skI --connect-timeout 5 "https://$node" > /dev/null 2>&1; then
            echo -e "    ${GREEN}[PASS]${NC} Reached $node"
        else
            echo -e "    ${RED}[FAIL]${NC} Cannot reach $node"
        fi
    done
    
    API_HOST=$([[ "$CLOUD_SEL" == "EU" ]] && echo "api.wallarm.com" || echo "us1.api.wallarm.com")

    echo -n "  Testing Docker Hub Registry Path... "
    REGISTRY_STATUS=$(curl -skI --connect-timeout 5 -o /dev/null -w "%{http_code}" "https://registry-1.docker.io/v2/")

    if [[ "$REGISTRY_STATUS" == "200" || "$REGISTRY_STATUS" == "401" ]]; then
        REGISTRY_REACHABLE=true
        echo -e "${GREEN}REACHABLE${NC} ($REGISTRY_STATUS)"
    else
        REGISTRY_REACHABLE=false
        echo -e "${RED}OFFLINE${NC} ($REGISTRY_STATUS)"
        if ! ls *.tar >/dev/null 2>&1; then
            echo -e "  ${RED}✗ FATAL: No registry and no local .tar found.${NC}"; exit 1
        fi
    fi
}

# --- 2. ENGINE SETUP (Manual Binary Download & Install) ---

setup_manual_engine() {
    echo -e "\n${YELLOW}[2/5] Setting up Docker Engine (Manual Binaries)...${NC}"
    
    if command -v docker > /dev/null 2>&1 && sudo docker info > /dev/null 2>&1; then
        echo -e "  ${GREEN}✓${NC} Docker is already installed and running."
    else
        echo "  Docker not found. Proceeding with static binary installation..."
        
        # Determine Architecture
        ARCH=$(uname -m)
        BINARY_URL="https://download.docker.com/linux/static/stable/$ARCH/docker-24.0.7.tgz"
        
        echo "  Downloading Docker Binaries ($ARCH)..."
        curl -L "$BINARY_URL" -o docker-static.tgz || { echo -e "${RED}Download failed.${NC}"; exit 1; }
        
        echo "  Extracting and moving binaries to /usr/bin/..."
        tar xzvf docker-static.tgz > /dev/null
        sudo cp docker/* /usr/bin/
        rm -rf docker docker-static.tgz
        
        echo "  Creating systemd service..."
        sudo tee /etc/systemd/system/docker.service > /dev/null <<EOF
[Unit]
Description=Docker Engine
After=network-online.target
[Service]
Type=notify
ExecStart=/usr/bin/dockerd
Restart=on-failure
LimitNOFILE=infinity
[Install]
WantedBy=multi-user.target
EOF
        sudo systemctl daemon-reload
        sudo systemctl enable --now docker
        
        # Wait for daemon to wake up
        sleep 5
        sudo docker info > /dev/null 2>&1 || { echo -e "${RED}Engine failed to start.${NC}"; exit 1; }
        echo -e "  ${GREEN}✓${NC} Docker Engine manually installed and started."
    fi
}

# --- 3. INPUT & WORKSPACE ---

get_user_input() {
    echo -e "\n${YELLOW}[3/5] Configuration Setup...${NC}"
    
    read -p "  Enter Inbound Traffic Port [80]: " IN_PORT
    IN_PORT=${IN_PORT:-80}
    MON_PORT=$((IN_PORT + 10))
    echo -e "  ${YELLOW}i${NC} Monitoring port set to: ${BOLD}$MON_PORT${NC}"

    INSTANCE_DIR="/opt/wallarm/poc_$IN_PORT"
    NODE_NAME="wallarm-node-$IN_PORT"

    read -p "  Upstream App IP [127.0.0.1]: " UPSTREAM_IP
    UPSTREAM_IP=${UPSTREAM_IP:-127.0.0.1}
    read -p "  Upstream App Port [8080]: " UPSTREAM_PORT
    UPSTREAM_PORT=${UPSTREAM_PORT:-8080}
    read -p "  Paste Wallarm Token: " TOKEN

    # Port Collision Check
    if sudo netstat -tulpn | grep -E ":$IN_PORT |:$MON_PORT " > /dev/null 2>&1; then
        echo -e "  ${RED}✗ FATAL: Port $IN_PORT or $MON_PORT is already in use.${NC}"; exit 1
    fi
}

# --- 4. DEPLOYMENT & PERSISTENCE ---

execute_deployment() {
    echo -e "\n${YELLOW}[4/5] Launching Wallarm Instance...${NC}"
    sudo mkdir -p "$INSTANCE_DIR"

    # Nginx Config
    sudo tee "$INSTANCE_DIR/nginx.conf" > /dev/null <<EOF
server {
    listen 80;
    wallarm_mode monitoring;
    location / {
        proxy_pass http://$UPSTREAM_IP:$UPSTREAM_PORT;
        proxy_set_header Host \$host;
        proxy_set_header X-Real-IP \$remote_addr;
        proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
    }
}
server { listen 90; location /wallarm-status { wallarm_status on; allow all; } }
EOF

    # Image Logic
    if [ "$REGISTRY_REACHABLE" = true ]; then
        echo "  Pulling wallarm/node:latest..."
        sudo docker pull wallarm/node:latest
    else
        echo "  Registry offline. Loading local .tar..."
        sudo docker load < *.tar
    fi

    # The Persistence Script
    sudo tee "$INSTANCE_DIR/start.sh" > /dev/null <<EOF
#!/bin/bash
sudo docker rm -f $NODE_NAME 2>/dev/null
sudo docker run -d --name $NODE_NAME --restart always \\
  -p $IN_PORT:80 -p $MON_PORT:90 \\
  -e WALLARM_API_TOKEN=$TOKEN -e WALLARM_API_HOST=$API_HOST \\
  -v "$INSTANCE_DIR/nginx.conf:/etc/nginx/http.d/default.conf:ro" \\
  wallarm/node:latest
EOF
    sudo chmod +x "$INSTANCE_DIR/start.sh"
    sudo "$INSTANCE_DIR/start.sh"
}

# --- 5. VERIFY ---

verify_and_test() {
    echo -e "\n${YELLOW}[5/5] Final Verification...${NC}"
    sleep 15
    if curl -s "http://localhost:$MON_PORT/wallarm-status" | grep -q "requests"; then
        echo -e "\n${GREEN}${BOLD}✅ SUCCESS: Wallarm Node is active on Port $IN_PORT${NC}"
        echo -e "Monitoring available at: http://localhost:$MON_PORT/wallarm-status\n"
        
        echo -e "${YELLOW}⚔️ Simulating SQLi Attack...${NC}"
        curl -s -o /dev/null -w "Result: HTTP %{http_code}\n" "http://localhost:$IN_PORT/?id='OR+1=1--"
    else
        echo -e "\n${RED}❌ FAILED: Container started but status page is unreachable.${NC}"
        sudo docker logs $NODE_NAME | tail -n 5
    fi
}

# --- RUN ---
check_connectivity; setup_manual_engine; get_user_input; execute_deployment; verify_and_test