#!/bin/bash
# Deploy mim4u.org frontend to VMID 7810
# Builds the frontend and deploys to /var/www/html

set -euo pipefail

# Load IP configuration
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
source "${PROJECT_ROOT}/config/ip-addresses.conf" 2>/dev/null || true


PROXMOX_HOST="${1:-192.168.11.12}"
VMID="${2:-7810}"
MIM_PROJECT_PATH="${3:-/home/intlc/projects/proxmox/miracles_in_motion}"
WEB_ROOT="/var/www/html"

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

log_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
log_success() { echo -e "${GREEN}[✓]${NC} $1"; }
log_warn() { echo -e "${YELLOW}[WARN]${NC} $1"; }
log_error() { echo -e "${RED}[ERROR]${NC} $1"; }

echo ""
log_info "═══════════════════════════════════════════════════════════"
log_info "  DEPLOYING MIM4U.ORG FRONTEND TO VMID $VMID"
log_info "═══════════════════════════════════════════════════════════"
echo ""

# Step 1: Check if local dist exists
log_info "Step 1: Checking for existing build..."
if [ -d "$MIM_PROJECT_PATH/dist" ] && [ -f "$MIM_PROJECT_PATH/dist/index.html" ]; then
    log_success "Found existing build in $MIM_PROJECT_PATH/dist"
    USE_EXISTING_BUILD=true
else
    log_warn "No existing build found, will build on VMID $VMID"
    USE_EXISTING_BUILD=false
fi
echo ""

# Step 2: Prepare VMID 7810 for deployment
log_info "Step 2: Preparing VMID $VMID for deployment..."

# Install Node.js if not present
log_info "Checking Node.js installation..."
NODE_VERSION_CHECK=$(ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct exec $VMID -- bash -c 'which node >/dev/null 2>&1 && node --version 2>/dev/null | cut -d. -f1 | sed s/v// || echo 0'" 2>/dev/null || echo "0")

if [ "$NODE_VERSION_CHECK" = "0" ] || [ "$NODE_VERSION_CHECK" -lt 18 ]; then
    log_info "Installing prerequisites (curl, ca-certificates)..."
    ssh -o ConnectTimeout=30 root@"$PROXMOX_HOST" "pct exec $VMID -- bash -c '
        export DEBIAN_FRONTEND=noninteractive
        apt-get update -qq
        apt-get install -y -qq curl ca-certificates gnupg
    '" 2>&1 | tail -5 || true
    
    log_info "Installing Node.js 18 from NodeSource..."
    ssh -o ConnectTimeout=60 root@"$PROXMOX_HOST" "pct exec $VMID -- bash -c '
        export DEBIAN_FRONTEND=noninteractive
        # Remove old nodejs package if present
        apt-get remove -y nodejs nodejs-doc libnode72 2>&1 | grep -v \"not installed\" || true
        
        # Install NodeSource Node.js 18
        curl -fsSL https://deb.nodesource.com/setup_18.x | bash -
        apt-get install -y nodejs
    '" 2>&1 | tail -20 || {
        log_error "Failed to install Node.js"
        exit 1
    }
    
    # Verify installation
    NEW_NODE_VERSION=$(ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct exec $VMID -- node --version 2>/dev/null" || echo "")
    if [ -n "$NEW_NODE_VERSION" ]; then
        log_success "Node.js installed: $NEW_NODE_VERSION"
    else
        log_error "Node.js installation verification failed"
        exit 1
    fi
else
    log_success "Node.js already installed (v$NODE_VERSION_CHECK+)"
fi

# Verify Node.js version
NODE_VERSION=$(ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct exec $VMID -- node --version" 2>/dev/null || echo "")
log_info "Node.js version: $NODE_VERSION"
echo ""

# Step 3: Deploy source or build
if [ "$USE_EXISTING_BUILD" = true ]; then
    # Step 3a: Copy dist folder directly
    log_info "Step 3: Copying build files to VMID $VMID..."
    
    # Create temporary tarball
    TEMP_TAR="/tmp/mim4u-frontend-$$.tar.gz"
    log_info "Creating archive of dist folder..."
    cd "$MIM_PROJECT_PATH"
    tar -czf "$TEMP_TAR" -C dist .
    
    # Copy to Proxmox host
    log_info "Transferring archive to Proxmox host..."
    scp -o StrictHostKeyChecking=no "$TEMP_TAR" root@"$PROXMOX_HOST":/tmp/ >/dev/null
    
    # Extract to container
    log_info "Extracting to VMID $VMID web root..."
    ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct push $VMID /tmp/$(basename $TEMP_TAR) /tmp/$(basename $TEMP_TAR)" >/dev/null
    ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct exec $VMID -- bash -c '
        mkdir -p $WEB_ROOT
        cd $WEB_ROOT
        tar -xzf /tmp/$(basename '$TEMP_TAR')
        rm /tmp/$(basename '$TEMP_TAR')
        chown -R www-data:www-data $WEB_ROOT 2>/dev/null || true
    '"
    
    # Cleanup
    rm -f "$TEMP_TAR"
    ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "rm -f /tmp/$(basename $TEMP_TAR)" 2>/dev/null || true
    
    log_success "Build files deployed to $WEB_ROOT"
else
    # Step 3b: Copy source and build on VM
    log_info "Step 3: Copying source code and building on VMID $VMID..."
    
    # Create tarball of source (excluding node_modules and dist)
    TEMP_TAR="/tmp/mim4u-source-$$.tar.gz"
    log_info "Creating source archive..."
    cd "$MIM_PROJECT_PATH"
    tar --exclude='node_modules' \
        --exclude='dist' \
        --exclude='.git' \
        --exclude='*.log' \
        -czf "$TEMP_TAR" .
    
    # Copy to Proxmox host
    TAR_NAME=$(basename "$TEMP_TAR")
    log_info "Transferring source to Proxmox host..."
    scp -o StrictHostKeyChecking=no "$TEMP_TAR" root@"$PROXMOX_HOST":/tmp/ >/dev/null
    
    # Extract and build in container
    log_info "Extracting source and building in VMID $VMID..."
    BUILD_DIR="/tmp/mim4u-build-$$"
    ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct push $VMID /tmp/$TAR_NAME /tmp/$TAR_NAME" >/dev/null
    ssh -o ConnectTimeout=60 root@"$PROXMOX_HOST" "pct exec $VMID -- bash -c '
        BUILD_DIR=\"$BUILD_DIR\"
        TAR_FILE=\"/tmp/$TAR_NAME\"
        WEB_ROOT=\"$WEB_ROOT\"
        
        mkdir -p \"\$BUILD_DIR\"
        cd \"\$BUILD_DIR\"
        
        echo \"Extracting source archive...\"
        tar -xzf \"\$TAR_FILE\" || { echo \"TAR_EXTRACT_FAILED\"; exit 1; }
        rm -f \"\$TAR_FILE\"
        
        echo \"Installing dependencies...\"
        export DEBIAN_FRONTEND=noninteractive
        npm install --legacy-peer-deps 2>&1 | tail -20 || { echo \"NPM_INSTALL_FAILED\"; exit 1; }
        
        echo \"Building application...\"
        (npm run build 2>&1 || npx vite build 2>&1) | tail -30
        
        if [ -d dist ] && [ -f dist/index.html ]; then
            mkdir -p \"\$WEB_ROOT\"
            cp -r dist/* \"\$WEB_ROOT\"/
            chown -R www-data:www-data \"\$WEB_ROOT\" 2>/dev/null || true
            rm -rf \"\$BUILD_DIR\"
            echo \"BUILD_SUCCESS\"
        else
            echo \"BUILD_FAILED - dist/index.html not found\"
            exit 1
        fi
    '" 2>&1
    
    # Cleanup
    rm -f "$TEMP_TAR"
    ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "rm -f /tmp/$(basename $TEMP_TAR)" 2>/dev/null || true
    
    log_success "Source built and deployed to $WEB_ROOT"
fi
echo ""

# Step 4: Verify deployment
log_info "Step 4: Verifying deployment..."
if ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct exec $VMID -- test -f $WEB_ROOT/index.html" 2>/dev/null; then
    FILE_COUNT=$(ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct exec $VMID -- find $WEB_ROOT -type f | wc -l" 2>/dev/null || echo "0")
    log_success "Deployment verified: $FILE_COUNT files in $WEB_ROOT"
    ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct exec $VMID -- ls -lh $WEB_ROOT/index.html" 2>/dev/null | head -1
else
    log_error "Deployment failed: index.html not found"
    exit 1
fi
echo ""

# Step 5: Restart nginx
log_info "Step 5: Restarting nginx..."
ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct exec $VMID -- systemctl restart nginx" 2>/dev/null || {
    log_warn "nginx restart failed, checking status..."
    ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct exec $VMID -- systemctl status nginx | head -5" 2>/dev/null || true
}

sleep 2
if ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" "pct exec $VMID -- systemctl is-active --quiet nginx" 2>/dev/null; then
    log_success "nginx is running"
else
    log_warn "nginx may not be running"
fi
echo ""

# Step 6: Test HTTP response
log_info "Step 6: Testing HTTP response..."
HTTP_CODE=$(ssh -o ConnectTimeout=10 root@"$PROXMOX_HOST" \
    "pct exec $VMID -- bash -c 'curl -s -o /dev/null -w \"%{http_code}\" --connect-timeout 3 http://127.0.0.1/ 2>/dev/null || echo \"000\"'" 2>/dev/null || echo "000")

if [ "$HTTP_CODE" = "200" ] || [ "$HTTP_CODE" = "304" ]; then
    log_success "HTTP test passed (status: $HTTP_CODE)"
else
    log_warn "HTTP test returned status: $HTTP_CODE"
fi
echo ""

# Summary
log_success "═══════════════════════════════════════════════════════════"
log_success "  DEPLOYMENT COMPLETE"
log_success "═══════════════════════════════════════════════════════════"
echo ""
log_info "Frontend deployed to: VMID $VMID ($WEB_ROOT)"
log_info "Access via:"
echo "  • Direct: http://${IP_MIM_WEB:-192.168.11.37}/"
echo "  • Public: https://mim4u.org/ (via NPMplus)"
echo ""