from django.db import models
from django.conf import settings
import uuid

def getRandom():
    return str(uuid.uuid4().hex)

class Organization(models.Model):
    name = models.CharField("Organization Name", max_length=300)
    users = models.ManyToManyField(settings.AUTH_USER_MODEL)

    def __str__(self):
        return self.name

class Network(models.Model):
    name = models.CharField("Common Name", max_length=64, blank=True, null=True)
    extip = models.CharField("External/Public IP", max_length=15)
    intip = models.CharField("Internal/Private IP", max_length=15)
    organizations = models.ManyToManyField(Organization)

    def __str__(self):
        return ("%s" % self.intip + (" (%s)" % self.name if self.name else ""))

class Model(models.Model):
    name = models.CharField("Model Name", max_length=100, unique=True)
    extname = models.CharField("Manufacturer Model Name", max_length=100)
    config = models.TextField("OpenWRT Compile Config", blank=True, null=True)
    firmware = models.DateTimeField("Firmware Modification Date", auto_now=True)
    wwan = models.BooleanField("Supports WWAN (External WiFi)", default=False)

    def __str__(self):
        return self.name

class Wifi(models.Model):
    serial = models.CharField("Device Serial Number", max_length=12, unique=True)
    organization = models.ForeignKey(Organization, on_delete=models.CASCADE)
    ssid = models.CharField("WiFi SSID", max_length=32)
    bssid = models.CharField("WiFi BSSID", max_length=64, blank=True, null=True)
    key = models.CharField("WiFi key", max_length=32)
    ip = models.CharField("Configuration IP", max_length=15, blank=True, null=True)
    user = models.CharField("Configuration User Name", max_length=32, blank=True, null=True)
    password = models.CharField("Configuration Password", max_length=32, blank=True, null=True)

    def __str__(this):
        return "%s (%s)" % (this.serial, this.ssid)

class Device(models.Model):
    serial = models.CharField("Device Serial Number", max_length=12, unique=True)
    name = models.CharField("Common Name", max_length=100, default="", blank=True, null=True)
    model = models.ForeignKey(Model, on_delete=models.CASCADE)
    organization = models.ForeignKey(Organization, on_delete=models.CASCADE)
    network = models.ForeignKey(Network, on_delete=models.SET_NULL, blank=True, null=True)
    wifi = models.ManyToManyField(Wifi, blank=True)
    curip = models.CharField("Current IP Address", max_length=15, blank=True, null=True)
    lasttime = models.DateTimeField("Last Received IP", blank=True, null=True, editable=False)
    lastbeat = models.DateTimeField("Last Received Timestamp", blank=True, null=True, editable=False)
    secret = models.CharField("Secret", default=getRandom, max_length=128)
    password = models.CharField("Device Password", default=getRandom, max_length=128)
    vpnconfig = models.TextField("VPN Configuration", blank=True, null=True, editable=False)
    firmware = models.DateTimeField("Firmware Creation Time", blank=True, null=True, editable=False)
    update = models.BooleanField("Trigger Firmware Update", default=False)
    reboot = models.BooleanField("Trigger Reboot", default=False)
    changed = models.DateTimeField("Last Change of Device Config")

    def __str__(self):
        return "%s%s" % (self.serial, " (%s)" % self.curip if self.curip else "")