from rest_framework import serializers
from rest_framework.exceptions import PermissionDenied

from glitchtip.exceptions import ConflictException
from projects.serializers.serializers import OrganizationProjectSerializer
from teams.models import Team
from teams.serializers import TeamSerializer
from users.models import User
from users.serializers import UserSerializer
from users.utils import is_user_registration_open

from ..models import ROLES, OrganizationUser, OrganizationUserRole
from .base_serializers import OrganizationReferenceSerializer


class OrganizationSerializer(OrganizationReferenceSerializer):
    pass


class OrganizationDetailSerializer(OrganizationSerializer):
    projects = OrganizationProjectSerializer(many=True)
    teams = TeamSerializer(many=True)
    openMembership = serializers.BooleanField(source="open_membership")
    scrubIPAddresses = serializers.BooleanField(source="scrub_ip_addresses")

    class Meta(OrganizationSerializer.Meta):
        fields = OrganizationSerializer.Meta.fields + (
            "projects",
            "openMembership",
            "scrubIPAddresses",
            "teams",
        )


class OrganizationUserSerializer(serializers.ModelSerializer):
    user = UserSerializer(required=False, read_only=True)
    role = serializers.CharField(source="get_role")
    roleName = serializers.CharField(source="get_role_display", read_only=True)
    dateCreated = serializers.DateTimeField(source="created", read_only=True)
    teams = serializers.SlugRelatedField(
        many=True, write_only=True, slug_field="slug", queryset=Team.objects.none()
    )
    isOwner = serializers.SerializerMethodField()

    class Meta:
        model = OrganizationUser
        fields = (
            "role",
            "id",
            "user",
            "roleName",
            "dateCreated",
            "email",
            "teams",
            "pending",
            "isOwner",
        )

    def __init__(self, *args, request_user=None, **kwargs):
        super().__init__(*args, **kwargs)
        if "request" in self.context:
            organization_slug = self.context["view"].kwargs.get("organization_slug")
            self.fields["teams"].child_relation.queryset = Team.objects.filter(
                organization__slug=organization_slug
            )

    def get_extra_kwargs(self):
        """email should be read only when updating"""
        extra_kwargs = super().get_extra_kwargs()
        if self.instance is not None:
            extra_kwargs["email"] = {"read_only": True}
            extra_kwargs["user"] = {"read_only": True}

        return extra_kwargs

    def get_isOwner(self, obj):
        if owner := obj.organization.owner:
            return owner.organization_user_id == obj.id
        return False

    def create(self, validated_data):
        role = OrganizationUserRole.from_string(validated_data.get("get_role"))
        email = validated_data.get("email")
        organization = validated_data.get("organization")
        teams = validated_data.get("teams")
        if (
            not is_user_registration_open()
            and not User.objects.filter(email=email).exists()
        ):
            raise PermissionDenied("Only existing users may be invited")
        if organization.organization_users.filter(email=email).exists():
            raise ConflictException(f"The user {email} is already invited", "email")
        if organization.organization_users.filter(user__email=email).exists():
            raise ConflictException(f"The user {email} is already a member", "email")
        org_user = super().create(
            {"role": role, "email": email, "organization": organization}
        )
        org_user.team_set.add(*teams)
        return org_user

    def update(self, instance, validated_data):
        get_role = validated_data.pop("get_role", None)
        if get_role:
            role = OrganizationUserRole.from_string(get_role)
            validated_data["role"] = role
        return super().update(instance, validated_data)

    def to_representation(self, obj):
        """Override email for representation to potentially show user's email"""
        self.fields["email"] = serializers.SerializerMethodField()
        return super().to_representation(obj)

    def get_email(self, obj):
        """Prefer user primary email over org user email (which is only for invites)"""
        if obj.user:
            return obj.user.email
        return obj.email


class OrganizationUserDetailSerializer(OrganizationUserSerializer):
    teams = serializers.SlugRelatedField(
        source="team_set", slug_field="slug", read_only=True, many=True
    )
    roles = serializers.SerializerMethodField()

    class Meta(OrganizationUserSerializer.Meta):
        fields = OrganizationUserSerializer.Meta.fields + ("roles",)

    def get_roles(self, obj):
        return ROLES


class OrganizationUserProjectsSerializer(OrganizationUserSerializer):
    projects = serializers.SerializerMethodField()

    class Meta(OrganizationUserSerializer.Meta):
        fields = OrganizationUserSerializer.Meta.fields + ("projects",)

    def get_projects(self, obj):
        return obj.organization.projects.filter(team__members=obj).values_list(
            "slug", flat=True
        )


class ReinviteSerializer(serializers.Serializer):
    reinvite = serializers.IntegerField()

    def update(self, instance, validated_data):
        if validated_data.get("reinvite"):
            pass
            # Send email
        return instance


class OrganizationUserOrganizationSerializer(OrganizationUserSerializer):
    """Organization User Serializer with Organization info"""

    organization = OrganizationSerializer()

    class Meta(OrganizationUserSerializer.Meta):
        fields = OrganizationUserSerializer.Meta.fields + ("organization",)


class AcceptInviteSerializer(serializers.Serializer):
    accept_invite = serializers.BooleanField()
    org_user = OrganizationUserOrganizationSerializer(read_only=True)