sudo cp -r encoder/* /var/www/encoder/
sudo cp -r html/* /var/www/html/
sudo cp attempts.json /var/www/attempts.json
DEVICE_ID="$(sudo cat /sys/class/dmi/id/product_uuid | tr -d '\n')"
sudo sed -i 's/certificatecertificatecertificatecertificate/'$DEVICE_ID'/g' /var/www/html/certification.html

cat > /etc/apache2/sites-available/000-default.conf << 'EOL'
<VirtualHost *:8080>
    ServerName localhost
    ServerAdmin webmaster@localhost
    DocumentRoot /var/www/encoder

    ErrorLog ${APACHE_LOG_DIR}/encoder-error.log
    CustomLog ${APACHE_LOG_DIR}/encoder-access.log combined

    SSLEngine on
    SSLCertificateFile /etc/ssl/certs/ssl-cert-snakeoil.pem
    SSLCertificateKeyFile /etc/ssl/private/ssl-cert-snakeoil.key

    <Directory /var/www/encoder>
        Options Indexes FollowSymLinks
        AllowOverride All
        Require all granted
    </Directory>
</VirtualHost>
EOL

cat>/etc/apache2/ports.conf<< 'EOL'
<IfModule mod_ssl.c>
    Listen 8080
</IfModule>
EOL


SOURCE_FILE="users.json"
TARGET_FILE="/var/www/users.json"

if [ ! -f "$TARGET_FILE" ]; then
    cp "$SOURCE_FILE" "$TARGET_FILE"
fi

SOURCE_FILE="users.json"
TARGET_FILE="/var/www/users.json"

if [ ! -f "$TARGET_FILE" ]; then
    cp "$SOURCE_FILE" "$TARGET_FILE"
fi


cat > /etc/systemd/system/encoder-rtmp0.service<< 'EOL'
[Unit]
Description= RTMP Encoder by ShreeBhattJi

[Service]
ExecStart=/bin/bash /var/www/encoder-rtmp0.sh
WorkingDirectory=/var/www/
Restart=always
User=root
Environment=PATH=/usr/bin:/usr/local/bin
RestartSec=30

[Install]
WantedBy=multi-user.target
EOL

cat > /etc/systemd/system/encoder-rtmp1.service<< 'EOL'
[Unit]
Description= RTMP Encoder by ShreeBhattJi

[Service]
ExecStart=/bin/bash /var/www/encoder-rtmp1.sh
WorkingDirectory=/var/www/
Restart=always
User=root
Environment=PATH=/usr/bin:/usr/local/bin
RestartSec=30

[Install]
WantedBy=multi-user.target
EOL

sudo mkdir -p /etc/systemd/system/nginx.service.d

sudo cat > /etc/systemd/system/nginx.service.d/override.conf << 'EOF'
[Service]
Restart=always
RestartSec=30
EOF

cat > /etc/systemd/system/encoder-rtmp0.service<< 'EOL'
[Unit]
Description= RTMP Encoder by ShreeBhattJi

[Service]
ExecStart=/bin/bash /var/www/encoder-rtmp0.sh
WorkingDirectory=/var/www/
Restart=always
User=root
Environment=PATH=/usr/bin:/usr/local/bin
RestartSec=30

[Install]
WantedBy=multi-user.target
EOL

cat > /etc/systemd/system/encoder-rtmp1.service<< 'EOL'
[Unit]
Description= RTMP Encoder by ShreeBhattJi

[Service]
ExecStart=/bin/bash /var/www/encoder-rtmp1.sh
WorkingDirectory=/var/www/
Restart=always
User=root
Environment=PATH=/usr/bin:/usr/local/bin
RestartSec=30

[Install]
WantedBy=multi-user.target
EOL

sudo cp default_nginx_site /var/www/default_nginx_site
sudo cp default_nginx.conf /var/www/default_nginx.conf

sudo systemctl unmask systemd-networkd-wait-online.service
sudo systemctl enable systemd-networkd-wait-online.service
sudo systemctl daemon-reload
sudo systemctl restart nginx

sudo a2enmod ssl
sudo a2ensite 000-default

sudo chown -R www-data:www-data /var/www/*

FSTAB="/etc/fstab"
TMPFS_LINE="tmpfs  /mnt/ramdisk  tmpfs  size=1536M,mode=0755  0  0"

BIND_LINES=(
"/mnt/ramdisk/hls       /var/www/html/hls       none  bind  0  0"
"/mnt/ramdisk/dash      /var/www/html/dash      none  bind  0  0"
"/mnt/ramdisk/scramble  /var/www/html/scramble  none  bind  0  0"
)

# Ensure directories exist
mkdir -p /mnt/ramdisk/{hls,dash,scramble} /var/www/{hls,dash,scramble}

# Check if tmpfs is mounted
if ! mountpoint -q /mnt/ramdisk; then
  echo "tmpfs not mounted. Mounting now..."
  mount -t tmpfs -o size=1536M,mode=0755 tmpfs /mnt/ramdisk
fi

# Ensure bind mounts are active
for d in hls dash scramble; do
  if ! mountpoint -q "/var/www/$d"; then
    echo "Bind mount /var/www/$d not active. Mounting..."
    mount --bind "/mnt/ramdisk/$d" "/var/www/$d"
  fi
done

# Backup fstab once
if [ ! -f /etc/fstab.bak_ramdisk ]; then
  cp "$FSTAB" /etc/fstab.bak_ramdisk
fi

# Add tmpfs entry if missing
grep -qF "$TMPFS_LINE" "$FSTAB" || echo "$TMPFS_LINE" >> "$FSTAB"

# Add bind entries if missing
for line in "${BIND_LINES[@]}"; do
  grep -qF "$line" "$FSTAB" || echo "$line" >> "$FSTAB"
done

# Validate
mount -a

cat > /usr/local/bin/nginx_system_monitor_sampler.py<< 'EOL'
#!/usr/bin/env python3 -u
import time
import json
import os
import subprocess
import threading
import re
import psutil
from collections import deque
from datetime import datetime, timezone

# ---------------- CONFIGURATION ----------------
OUT_FILE = "/var/www/encoder/metrics.json"
TMP_FILE = OUT_FILE + ".tmp"
SAMPLE_INTERVAL = 10.0
HISTORY_SECONDS = 15 * 60
MAX_SAMPLES = int(HISTORY_SECONDS / SAMPLE_INTERVAL)

# ---------------- HISTORY BUFFERS ----------------
# Using a dictionary to manage deques more cleanly
keys = [
    "timestamps", "cpu_percent", "ram_percent", "gpu_total", "gpu_render", 
    "gpu_video", "gpu_blitter", "gpu_videoenhance", "net_in_Bps", 
    "net_out_Bps", "disk_read_Bps", "disk_write_Bps", "disk_percent"
]
hist = {k: deque(maxlen=MAX_SAMPLES) for k in keys}

# Global state for rates
_prev_net = psutil.net_io_counters()
_prev_disk = psutil.disk_io_counters()
_prev_time = time.time()

gpu_data = {"total": 0.0, "Render/3D": 0.0, "Video": 0.0, "Blitter": 0.0, "VideoEnhance": 0.0}
gpu_lock = threading.Lock()

# ---------------- GPU MONITOR THREAD ----------------

def gpu_monitor():
    global gpu_data
    # Note: Ensure this script runs as ROOT or with CAP_PERFMON for intel_gpu_top
    cmd = ["stdbuf", "-oL", "intel_gpu_top", "-J", "-s", "1000"]
    
    while True:
        try:
            p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, text=True)
            for line in p.stdout:
                # Basic regex to grab "busy": X.XX values from the JSON stream
                if '"busy":' in line:
                    val_match = re.search(r'"busy":\s*([\d\.]+)', line)
                    if val_match:
                        val = float(val_match.group(1))
                        with gpu_lock:
                            if "Render/3D" in line or "rcs" in line: gpu_data["Render/3D"] = val
                            elif "Video" in line or "vcs" in line: gpu_data["Video"] = val
                            elif "Blitter" in line or "bcs" in line: gpu_data["Blitter"] = val
                            elif "VideoEnhance" in line or "vecs" in line: gpu_data["VideoEnhance"] = val
                            
                            # Total is the max load of any single engine
                            gpu_data["total"] = max(gpu_data.values())
        except Exception as e:
            time.sleep(5) # Cool down on error

# ---------------- SAMPLING ----------------

def sample_once():
    global _prev_net, _prev_disk, _prev_time
    
    now = time.time()
    elapsed = max(now - _prev_time, 0.001) # Avoid division by zero
    
    # System Basics
    cpu = psutil.cpu_percent()
    ram = psutil.virtual_memory().percent
    
    # Network Rates
    net = psutil.net_io_counters()
    in_rate = max(0, (net.bytes_recv - _prev_net.bytes_recv) / elapsed)
    out_rate = max(0, (net.bytes_sent - _prev_net.bytes_sent) / elapsed)
    
    # Disk Rates & Usage
    disk = psutil.disk_io_counters()
    read_rate = max(0, (disk.read_bytes - _prev_disk.read_bytes) / elapsed)
    write_rate = max(0, (disk.write_bytes - _prev_disk.write_bytes) / elapsed)
    
    try:
        d_perc = psutil.disk_usage('/').percent
    except:
        d_perc = 0.0

    # GPU Data (Thread-safe copy)
    with gpu_lock:
        g = gpu_data.copy()

    # Update History Buffers
    hist["timestamps"].append(datetime.fromtimestamp(now).isoformat(timespec='seconds'))
    hist["cpu_percent"].append(round(cpu, 2))
    hist["ram_percent"].append(round(ram, 2))
    hist["net_in_Bps"].append(int(in_rate))
    hist["net_out_Bps"].append(int(out_rate))
    hist["disk_read_Bps"].append(int(read_rate))
    hist["disk_write_Bps"].append(int(write_rate))
    hist["disk_percent"].append(round(d_perc, 2))
    hist["gpu_total"].append(round(g["total"], 2))
    hist["gpu_render"].append(round(g["Render/3D"], 2))
    hist["gpu_video"].append(round(g["Video"], 2))
    hist["gpu_blitter"].append(round(g["Blitter"], 2))
    hist["gpu_videoenhance"].append(round(g["VideoEnhance"], 2))

    # Save state for next tick
    _prev_net, _prev_disk, _prev_time = net, disk, now

def write_json_atomic():
    payload = {k: list(v) for k, v in hist.items()}
    payload["sample_interval"] = SAMPLE_INTERVAL
    payload["generated_at"] = datetime.now(timezone.utc).isoformat(timespec='seconds').replace("+00:00", "Z")
    
    try:
        with open(TMP_FILE, "w") as f:
            json.dump(payload, f)
        os.replace(TMP_FILE, OUT_FILE)
    except Exception as e:
        print(f"File write error: {e}")

def main():
    # Start GPU monitor
    threading.Thread(target=gpu_monitor, daemon=True).start()
    
    print(f"Monitoring started. Writing to {OUT_FILE}...")
    while True:
        try:
            sample_once()
            write_json_atomic()
        except Exception as e:
            print(f"Loop error: {e}")
        time.sleep(SAMPLE_INTERVAL)

if __name__ == "__main__":
    main()

EOL

sudo systemctl enable --now system-monitor.service
sudo systemctl restart system-monitor.service --no-pager