from rest_framework import serializers


class OnlineClassTokenCreateSerializer(serializers.Serializer):
    redirect_path = serializers.CharField(required=False)

    def validate_redirect_path(self, value: str) -> str:
        value = value.strip()
        if value and value.startswith("http"):
            raise serializers.ValidationError("Redirect path must be relative to the frontend domain.")
        return value


class OnlineClassTokenVerifySerializer(serializers.Serializer):
    token = serializers.CharField(max_length=128)

    def validate_token(self, value: str) -> str:
        value = value.strip()
        if not value:
            raise serializers.ValidationError("Token is required.")
        return value


class LiveSessionRoomCreateSerializer(serializers.Serializer):
    room_id = serializers.CharField(required=False, max_length=255, allow_blank=True)
    subject = serializers.CharField(required=False, max_length=255, allow_blank=True)

    def validate_room_id(self, value: str) -> str:
        return value.strip()

    def validate_subject(self, value: str) -> str:
        return value.strip()


class LiveSessionTokenSerializer(serializers.Serializer):
    course_slug = serializers.CharField(max_length=255)

    def validate_course_slug(self, value: str) -> str:
        value = value.strip()
        if not value:
            raise serializers.ValidationError("course_slug is required.")
        return value