from django.db import models
from django.conf import settings
from django.urls import reverse
from sys import maxsize

from GeoffreyApp.util import create_token, objects_list_to_json

# Create your models here.


class APIToken(models.Model):
    key = models.CharField(default=create_token, max_length=25, unique=True)
    '''
    Key used to access the Geoffrey API
    '''

    name = models.CharField(max_length=50, blank=True)
    '''
    Name of the key
    '''

    commands_perm = models.BooleanField(default=False)
    '''
    Permission to use the command api
    '''

    def __str__(self):
        if len(self.name):
            return "{}: {}".format(self.name, self.key)
        else:
            return self.key


class Player(models.Model):
    name = models.CharField(max_length=30, unique=True)
    '''
    Player username
    '''

    mc_uuid = models.CharField(max_length=36, unique=True)
    '''
    Minecraft UUID
    '''

    discord_uuid = models.CharField(max_length=50, unique=True)
    '''
    Discord UUID
    '''

    @property
    def loc_count(self):
        return Location.objects.filter(owner=self).count()

    @property
    def json(self):
        return {"name": self.name,
                "mc_uuid": self.mc_uuid,
                "discord_uuid": self.discord_uuid
                }

    def __str__(self):
        return self.name


class Location(models.Model):
    DIMENSIONS = (
        ('O', 'Overworld'),
        ('N', 'Nether'),
        ('E', 'The End')
    )

    name = models.CharField(max_length=128, unique=True)
    '''
    Name of the location
    '''

    x_coord = models.IntegerField()
    '''
    X Position
    '''

    z_coord = models.IntegerField()
    '''
    Z Position
    '''

    dimension = models.CharField(max_length=1, choices=DIMENSIONS)

    owner = models.ManyToManyField(Player)
    '''
    Owner of Location
    '''

    @property
    def location(self):
        return "(x={}, z={})".format(self.x_coord, self.z_coord)

    @property
    def tunnel(self):
        try:
            tunnel = Tunnel.objects.get(location=self)
        except Tunnel.DoesNotExist:
            tunnel = None

        return tunnel

    @property
    def get_owners(self):
        owner_list = []
        for owner in self.owner.all():
            owner_list.append(owner.json)

        return owner_list

    @property
    def link(self):
        return ""

    @property
    def json(self):
        return {"type": self.__class__.__name__,
                "name": self.name,
                "x_coord": self.x_coord,
                "z_coord": self.z_coord,
                "dimension": self.dimension,
                "owner": self.get_owners,
                "location": self.location,
                "tunnel": None if self.tunnel is None else self.tunnel.tunnel_str,
                "link": self.link
                }

    @property
    def loc_type(self):
        str = self.loc_child_obj.__class__.__name__

        return str

    @property
    def link(self):
        return self.loc_child_obj.link()

    @property
    def loc_child_obj(self):
        if hasattr(self, "shop"):
            return self.shop
        elif hasattr(self, "base"):
            return self.base
        elif hasattr(self, "town"):
            return self.town
        else:
            return self

    @property
    def dynmap_url(self):
        base_url = getattr(settings, "GEOFFREY_DYNMAP_BASE_URL")
        world_name = getattr(settings, "GEOFFREY_DYNMAP_WORLD_NAME")
        if base_url is not None:
            url = base_url + "/?worldname={}&mapname=surface&zoom=4&x={}&y=65&z={}".format(world_name, self.x_coord,
                                                                                           self.z_coord)
            return url
        else:
            return None

    def __str__(self):
        return self.name


class Shop(Location):
    def __str__(self):
        return "Shop: %s" % self.name

    @property
    def link(self):
        return reverse("GeoffreyShopInfo", kwargs={"id": self.id})


class Base(Location):
    def __str__(self):
        return "Base: %s" % self.name

    @property
    def link(self):
        return reverse("GeoffreyBaseInfo", kwargs={"id": self.id})


class Town(Location):
    residents = models.ManyToManyField(Player)

    def __str__(self):
        return "Town: %s" % self.name

    @property
    def get_residents(self):
        residents = self.residents.all()

        return objects_list_to_json(residents)

    @property
    def json(self):
        json = super().json

        json["residents"] = self.get_residents

        return json

    @property
    def link(self):
        return reverse("GeoffreyTownInfo", kwargs={"id": self.id})


class ItemListing(models.Model):
    item_name = models.CharField(max_length=128)
    '''
    Name of the item
    '''

    price = models.IntegerField()
    '''
    Number of diamonds per amount of items
    '''

    amount = models.IntegerField()
    '''
    Number of items
    '''

    date_restocked = models.DateTimeField(auto_now=True)
    '''
    Datetime the item was last restocked
    '''

    shop = models.ForeignKey(Shop, related_name="shop_selling", on_delete=models.CASCADE)
    '''
    Shop the item is sold at
    '''

    @property
    def normalized_price(self):
        if self.amount == 0:
            return maxsize
        else:
            return self.price/self.amount

    @property
    def json(self):
        return {"item_name": self.item_name,
                "price": self.price,
                "amount": self.amount,
                "date_restocked": self.date_restocked,
                "normalized_price": self.normalized_price,
                "shop": self.shop.json,
                }

    def __str__(self):
        return "Item: %d %s for %d" % (self.amount, self.item_name, self.amount)


class Tunnel(models.Model):
    TUNNEL_NAMES = (
        ('N', getattr(settings, 'GEOFFREY_NORTH_TUNNEL', '')),
        ('E', getattr(settings, 'GEOFFREY_EAST_TUNNEL', '')),
        ('S', getattr(settings, 'GEOFFREY_SOUTH_TUNNEL', '')),
        ('W', getattr(settings, 'GEOFFREY_WEST_TUNNEL', ''))
    )
    '''
    Tunnel Direction
    '''

    tunnel_number = models.IntegerField()
    '''
    Tunnel coordinate
    '''

    tunnel_direction = models.CharField(max_length=1, choices=TUNNEL_NAMES)
    '''
    Tunnel Direction
    '''

    location = models.ForeignKey(Location, related_name="tunnel_location", on_delete=models.CASCADE)
    '''
    Location that the tunnel is for
    '''

    def __str__(self):
        return "Tunnel: %s %d" % (self.get_tunnel_direction_display(), self.tunnel_number)

    @property
    def json(self):
        return {"location_name": self.location.name,
                "tunnel_direction": self.get_tunnel_direction_display(),
                "tunnel_number": self.tunnel_number
                }

    @property
    def tunnel_str(self):
        return "{} {}".format(self.get_tunnel_direction_display(), self.tunnel_number)