from jinja2 import Environment, FileSystemLoader
import subprocess
from datetime import datetime, timedelta

now = datetime.today()
next_report = now + timedelta(hours=3)

last_user_added = subprocess.run(["sudo", "journalctl","_COMM=useradd","-r","-n", "1" , "--output-fields=MESSAGE"], capture_output=True).stdout.decode('UTF-8')
users_created_today = subprocess.run(["sudo", "journalctl", "-S","today","_COMM=useradd","-r","-n","1","--output-fields=MESSAGE"], capture_output=True).stdout.decode('UTF-8')
list_active_services = subprocess.run(["sudo", "service", "--status-all"], capture_output=True).stdout.decode('UTF-8')
list_groups = subprocess.run(["getent","group"], capture_output=True).stdout.decode('UTF-8')
since_last_boot = subprocess.run(["uptime","-s"], capture_output=True).stdout.decode('UTF-8').strip()
slb_date = datetime.strptime(since_last_boot, "%Y-%m-%d %H:%M:%S")
time_since_last_boot = now - slb_date
list_package_installs = subprocess.run(["grep", 'install', "/var/log/dpkg.log"], capture_output=True).stdout.decode('UTF-8')
list_package_upgrade = subprocess.run(["grep", 'upgrade', "/var/log/dpkg.log"], capture_output=True).stdout.decode('UTF-8')
list_package_remove = subprocess.run(["grep", 'remove', "/var/log/dpkg.log"], capture_output=True).stdout.decode('UTF-8')
device_info_grab = subprocess.run(["grep", 'Model' , "/proc/cpuinfo"], check=True, capture_output=True)
device_info = subprocess.run(['awk', '-F:', '{ print $2}'], input=device_info_grab.stdout, capture_output=True).stdout.decode('utf-8').strip()
debian_version = subprocess.run(["cat", "/etc/debian_version"], capture_output=True).stdout.decode('UTF-8')
kernel_version = subprocess.run(["uname","-a"], capture_output=True).stdout.decode('UTF-8')
hostname = subprocess.run(["hostname","-i"], capture_output=True).stdout.decode('UTF-8')

# loading the environment
env = Environment(loader=FileSystemLoader("templates"))

# # loading the template
template = env.get_template("template.jinja")

# rendering the template and storing the resultant text in variable output
output = template.render(
    now = now,
    next_report = next_report,
    last_user_added=last_user_added,
    users_created_today=users_created_today,
    list_active_services=list_active_services,
    list_groups=list_groups,
    since_last_boot=since_last_boot,
    list_package_installs=list_package_installs,
    list_package_upgrade=list_package_upgrade,
    list_package_remove=list_package_remove,
    device_info=device_info,
    debian_version=debian_version,
    kernel_version=kernel_version,
    hostname=hostname,
    days_since_last_boot = time_since_last_boot.days
)


with open("output.html", "w") as f:
    print(output, file=f)