"""Establishment serializers."""
from django.utils.translation import ugettext_lazy as _
from rest_framework import serializers

from comment import models as comment_models
from comment.serializers import common as comment_serializers
from establishment import models
from location.serializers import AddressBaseSerializer
from main.serializers import AwardSerializer, CurrencySerializer
from review import models as review_models
from tag.serializers import TagBaseSerializer
from timetable.serialziers import ScheduleRUDSerializer
from utils import exceptions as utils_exceptions
from utils.serializers import (ProjectModelSerializer, TranslatedField,
                               FavoritesCreateSerializer)


class ContactPhonesSerializer(serializers.ModelSerializer):
    """Contact phone serializer"""
    class Meta:
        model = models.ContactPhone
        fields = [
            'phone'
        ]


class ContactEmailsSerializer(serializers.ModelSerializer):
    """Contact email serializer"""
    class Meta:
        model = models.ContactEmail
        fields = [
            'email'
        ]


class SocialNetworkRelatedSerializers(serializers.ModelSerializer):
    """Social network serializers."""
    class Meta:
        model = models.SocialNetwork
        fields = [
            'id',
            'title',
            'url',
        ]


class PlateSerializer(ProjectModelSerializer):

    name_translated = TranslatedField()
    currency = CurrencySerializer(read_only=True)

    class Meta:
        model = models.Plate
        fields = [
            'name_translated',
            'currency',
            'price',
            'is_signature_plate',
        ]


class MenuSerializers(ProjectModelSerializer):
    plates = PlateSerializer(read_only=True, many=True, source='plate_set')
    category_translated = serializers.CharField(read_only=True)

    class Meta:
        model = models.Menu
        fields = [
            'id',
            'category',
            'category_translated',
            'plates',
            'establishment'
        ]


class MenuRUDSerializers(ProjectModelSerializer):
    plates = PlateSerializer(read_only=True, many=True, source='plate_set')

    class Meta:
        model = models.Menu
        fields = [
            'id',
            'category',
            'plates',
            'establishment'
        ]


class ReviewSerializer(serializers.ModelSerializer):
    """Serializer for model Review."""
    text_translated = serializers.CharField(read_only=True)

    class Meta:
        """Meta class."""
        model = review_models.Review
        fields = (
            'text_translated',
        )


class EstablishmentTypeBaseSerializer(serializers.ModelSerializer):
    """Serializer for EstablishmentType model."""
    name_translated = TranslatedField()

    class Meta:
        """Meta class."""
        model = models.EstablishmentType
        fields = [
            'id',
            'name',
            'name_translated',
            'use_subtypes'
        ]
        extra_kwargs = {
            'name': {'write_only': True},
            'use_subtypes': {'write_only': True},
        }

class EstablishmentTypeGeoSerializer(EstablishmentTypeBaseSerializer):
    """Serializer for EstablishmentType model w/ index_name."""

    class Meta(EstablishmentTypeBaseSerializer.Meta):
        fields = EstablishmentTypeBaseSerializer.Meta.fields + [
            'index_name'
        ]
        extra_kwargs = {
            **EstablishmentTypeBaseSerializer.Meta.extra_kwargs,
            'index_name': {'read_only': True},
        }


class EstablishmentSubTypeBaseSerializer(serializers.ModelSerializer):
    """Serializer for EstablishmentSubType models."""

    name_translated = TranslatedField()

    class Meta:
        """Meta class."""
        model = models.EstablishmentSubType
        fields = [
            'id',
            'name',
            'name_translated',
            'establishment_type'
        ]
        extra_kwargs = {
            'name': {'write_only': True},
            'establishment_type': {'write_only': True}
        }


class EstablishmentSubTypeGeoSerializer(EstablishmentSubTypeBaseSerializer):
    """Serializer for EstablishmentSuType model w/ index_name."""

    class Meta(EstablishmentSubTypeBaseSerializer.Meta):
        fields = EstablishmentSubTypeBaseSerializer.Meta.fields + [
            'index_name'
        ]
        extra_kwargs = {
            **EstablishmentSubTypeBaseSerializer.Meta.extra_kwargs,
            'index_name': {'read_only': True},
        }


class EstablishmentEmployeeSerializer(serializers.ModelSerializer):
    """Serializer for actual employees."""

    id = serializers.IntegerField(source='employee.id')
    name = serializers.CharField(source='employee.name')
    position_translated = serializers.CharField(source='position.name_translated')
    awards = AwardSerializer(source='employee.awards', many=True)
    priority = serializers.IntegerField(source='position.priority')
    position_index_name = serializers.CharField(source='position.index_name')

    class Meta:
        """Meta class."""

        model = models.Employee
        fields = ('id', 'name', 'position_translated', 'awards', 'priority', 'position_index_name')


class EstablishmentBaseSerializer(ProjectModelSerializer):
    """Base serializer for Establishment model."""

    preview_image = serializers.URLField(source='preview_image_url')
    address = AddressBaseSerializer()
    in_favorites = serializers.BooleanField(allow_null=True)
    tags = TagBaseSerializer(read_only=True, many=True)
    currency = CurrencySerializer()

    class Meta:
        """Meta class."""

        model = models.Establishment
        fields = [
            'id',
            'name',
            'transliterated_name',
            'index_name',
            'price_level',
            'toque_number',
            'public_mark',
            'slug',
            'preview_image',
            'in_favorites',
            'address',
            'tags',
            'currency'
        ]


class EstablishmentGeoSerializer(EstablishmentBaseSerializer):
    """Serializer for Geo view."""

    type = EstablishmentTypeGeoSerializer(source='establishment_type', read_only=True)
    subtypes = EstablishmentSubTypeGeoSerializer(many=True, source='establishment_subtypes')

    class Meta(EstablishmentBaseSerializer.Meta):
        """Meta class."""

        fields = EstablishmentBaseSerializer.Meta.fields + [
            'type',
            'subtypes',
        ]


class RangePriceSerializer(serializers.Serializer):
    max = serializers.DecimalField(max_digits=14, decimal_places=2, read_only=True, default=0)
    min = serializers.DecimalField(max_digits=14, decimal_places=2, read_only=True, default=0)


class EstablishmentDetailSerializer(EstablishmentBaseSerializer):
    """Serializer for Establishment model."""

    description_translated = TranslatedField()
    image = serializers.URLField(source='image_url')
    type = EstablishmentTypeBaseSerializer(source='establishment_type', read_only=True)
    subtypes = EstablishmentSubTypeBaseSerializer(many=True, source='establishment_subtypes')
    awards = AwardSerializer(many=True)
    schedule = ScheduleRUDSerializer(many=True, allow_null=True)
    phones = ContactPhonesSerializer(read_only=True, many=True)
    emails = ContactEmailsSerializer(read_only=True, many=True)
    review = ReviewSerializer(source='last_published_review', allow_null=True)
    employees = EstablishmentEmployeeSerializer(source='actual_establishment_employees',
                                                many=True)
    menu = MenuSerializers(source='menu_set', many=True, read_only=True)
    best_price_menu = serializers.DecimalField(max_digits=14, decimal_places=2, read_only=True)
    best_price_carte = serializers.DecimalField(max_digits=14, decimal_places=2, read_only=True)
    range_price_menu = RangePriceSerializer(read_only=True)
    range_price_carte = RangePriceSerializer(read_only=True)
    vintage_year = serializers.ReadOnlyField()

    class Meta(EstablishmentBaseSerializer.Meta):
        """Meta class."""

        fields = EstablishmentBaseSerializer.Meta.fields + [
            'description_translated',
            'image',
            'subtypes',
            'type',
            'awards',
            'schedule',
            'website',
            'facebook',
            'twitter',
            'lafourchette',
            'booking',
            'phones',
            'emails',
            'review',
            'employees',
            'menu',
            'best_price_menu',
            'best_price_carte',
            'range_price_menu',
            'range_price_carte',
            'transportation',
            'vintage_year',
        ]


class EstablishmentCommentCreateSerializer(comment_serializers.CommentSerializer):
    """Create comment serializer"""
    mark = serializers.IntegerField()

    class Meta:
        """Serializer for model Comment"""
        model = comment_models.Comment
        fields = [
            'id',
            'created',
            'text',
            'mark',
            'nickname',
            'profile_pic',
        ]

    def validate(self, attrs):
        """Override validate method"""
        # Check establishment object
        establishment_slug = self.context.get('request').parser_context.get('kwargs').get('slug')
        establishment_qs = models.Establishment.objects.filter(slug=establishment_slug)
        if not establishment_qs.exists():
            raise serializers.ValidationError({'detail': _('Establishment not found.')})
        attrs['establishment'] = establishment_qs.first()
        return attrs

    def create(self, validated_data, *args, **kwargs):
        """Override create method"""
        validated_data.update({
            'user': self.context.get('request').user,
            'content_object': validated_data.pop('establishment')
        })
        return super().create(validated_data)


class EstablishmentCommentRUDSerializer(comment_serializers.CommentSerializer):
    """Retrieve/Update/Destroy comment serializer."""
    class Meta:
        """Meta class."""
        model = comment_models.Comment
        fields = [
            'id',
            'created',
            'text',
            'mark',
            'nickname',
            'profile_pic',
        ]


class EstablishmentFavoritesCreateSerializer(FavoritesCreateSerializer):
    """Serializer to favorite object w/ model Establishment."""

    def validate(self, attrs):
        """Overridden validate method"""
        # Check establishment object
        establishment_qs = models.Establishment.objects.filter(slug=self.slug)

        # Check establishment obj by slug from lookup_kwarg
        if not establishment_qs.exists():
            raise serializers.ValidationError({'detail': _('Object not found.')})
        else:
            establishment = establishment_qs.first()

        # Check existence in favorites
        if establishment.favorites.filter(user=self.user).exists():
            raise utils_exceptions.FavoritesError()

        attrs['establishment'] = establishment
        return attrs

    def create(self, validated_data, *args, **kwargs):
        """Overridden create method"""
        validated_data.update({
            'user': self.user,
            'content_object': validated_data.pop('establishment')
        })
        return super().create(validated_data)