import graphene
from graphene_django import DjangoObjectType
from graphene_django.filter import DjangoFilterConnectionField
from .models import (
    Institution, Author, Affiliation, Domain, Field,
    Subfield, Topic, AuthorTopic, Work, AuthorYearlyStats,
    Concept, AuthorConcept
)


# === GraphQL Types ===
class InstitutionType(DjangoObjectType):
    class Meta:
        model = Institution
        fields = "__all__"
        filter_fields = {
            'id': ['exact', 'icontains'],
            'name': ['icontains', 'iexact'],
            'ror_id': ['exact'],
            'country_code': ['exact'],
            'institution_type': ['exact'],
        }
        interfaces = (graphene.relay.Node,)


class AuthorType(DjangoObjectType):
    class Meta:
        model = Author
        fields = "__all__"
        filter_fields = {
            'id': ['exact', 'icontains'],
            'name': ['icontains'],
            'orcid': ['exact'],
            'h_index': ['exact', 'gte', 'lte'],
            'cited_by_count': ['gte', 'lte'],
            'works_count': ['gte', 'lte'],
        }
        interfaces = (graphene.relay.Node,)


class AffiliationType(DjangoObjectType):
    class Meta:
        model = Affiliation
        fields = "__all__"
        filter_fields = {
            'author__id': ['exact'],
            'institution__id': ['exact'],
            'year': ['exact', 'gte', 'lte'],
            'is_last_known': ['exact'],
        }
        interfaces = (graphene.relay.Node,)


class DomainType(DjangoObjectType):
    class Meta:
        model = Domain
        fields = "__all__"
        filter_fields = ['id', 'name']
        interfaces = (graphene.relay.Node,)


class FieldType(DjangoObjectType):
    class Meta:
        model = Field
        fields = "__all__"
        filter_fields = {
            'id': ['exact'],
            'name': ['icontains'],
            'domain__id': ['exact'],
        }
        interfaces = (graphene.relay.Node,)


class SubfieldType(DjangoObjectType):
    class Meta:
        model = Subfield
        fields = "__all__"
        filter_fields = {
            'id': ['exact'],
            'name': ['icontains'],
            'field__id': ['exact'],
        }
        interfaces = (graphene.relay.Node,)


class TopicType(DjangoObjectType):
    class Meta:
        model = Topic
        fields = "__all__"
        filter_fields = {
            'id': ['exact'],
            'name': ['icontains'],
            'subfield__id': ['exact'],
        }
        interfaces = (graphene.relay.Node,)


class AuthorTopicType(DjangoObjectType):
    class Meta:
        model = AuthorTopic
        fields = "__all__"
        filter_fields = {
            'author__id': ['exact'],
            'topic__id': ['exact'],
        }
        interfaces = (graphene.relay.Node,)


class WorkType(DjangoObjectType):
    class Meta:
        model = Work
        fields = "__all__"
        filter_fields = {
            'id': ['exact'],
            'title': ['icontains'],
            'author__id': ['exact'],
            'year': ['exact', 'gte', 'lte'],
            'cited_by_count': ['gte', 'lte'],
        }
        interfaces = (graphene.relay.Node,)


class AuthorYearlyStatsType(DjangoObjectType):
    class Meta:
        model = AuthorYearlyStats
        fields = "__all__"
        filter_fields = {
            'author__id': ['exact'],
            'year': ['exact'],
            'works_count': ['gte', 'lte'],
        }
        interfaces = (graphene.relay.Node,)


class ConceptType(DjangoObjectType):
    class Meta:
        model = Concept
        fields = "__all__"
        filter_fields = ['id', 'name', 'level', 'score']
        interfaces = (graphene.relay.Node,)


class AuthorConceptType(DjangoObjectType):
    class Meta:
        model = AuthorConcept
        fields = "__all__"
        filter_fields = {
            'author__id': ['exact'],
            'concept__id': ['exact'],
        }
        interfaces = (graphene.relay.Node,)


# === Query with Filtered Connections ===
class Query(graphene.ObjectType):
    institution = graphene.relay.Node.Field(InstitutionType)
    all_institutions = DjangoFilterConnectionField(InstitutionType)

    author = graphene.relay.Node.Field(AuthorType)
    all_authors = DjangoFilterConnectionField(AuthorType)

    affiliation = graphene.relay.Node.Field(AffiliationType)
    all_affiliations = DjangoFilterConnectionField(AffiliationType)

    domain = graphene.relay.Node.Field(DomainType)
    all_domains = DjangoFilterConnectionField(DomainType)

    field = graphene.relay.Node.Field(FieldType)
    all_fields = DjangoFilterConnectionField(FieldType)

    subfield = graphene.relay.Node.Field(SubfieldType)
    all_subfields = DjangoFilterConnectionField(SubfieldType)

    topic = graphene.relay.Node.Field(TopicType)
    all_topics = DjangoFilterConnectionField(TopicType)

    author_topic = graphene.relay.Node.Field(AuthorTopicType)
    all_author_topics = DjangoFilterConnectionField(AuthorTopicType)

    work = graphene.relay.Node.Field(WorkType)
    all_works = DjangoFilterConnectionField(WorkType)

    author_yearly_stats = graphene.relay.Node.Field(AuthorYearlyStatsType)
    all_author_yearly_stats = DjangoFilterConnectionField(
        AuthorYearlyStatsType)

    concept = graphene.relay.Node.Field(ConceptType)
    all_concepts = DjangoFilterConnectionField(ConceptType)

    author_concept = graphene.relay.Node.Field(AuthorConceptType)
    all_author_concepts = DjangoFilterConnectionField(AuthorConceptType)


schema = graphene.Schema(query=Query)