example/api/src/main.py

@@ -1,9 +1,9 @@
 from starlette.responses import JSONResponse
 
+from api.src.queries.cities import CityGraphType
+from api.src.queries.hello import UserGraphType
 from cpl.api.api_module import ApiModule
-from cpl.api.application.web_app import WebApp
 from cpl.application.application_builder import ApplicationBuilder
-from cpl.graphql.application.graphql_app import GraphQLApp
 from cpl.auth.permission.permissions import Permissions
 from cpl.auth.schema import AuthUser, Role
 from cpl.core.configuration import Configuration
@@ -11,8 +11,8 @@ from cpl.core.console import Console
 from cpl.core.environment import Environment
 from cpl.core.utils.cache import Cache
 from cpl.database.mysql.mysql_module import MySQLModule
+from cpl.graphql.application.graphql_app import GraphQLApp
 from cpl.graphql.graphql_module import GraphQLModule
-from cpl.graphql.schema.root_query import RootQuery
 from queries.hello import HelloQuery
 from scoped_service import ScopedService
 from service import PingService
@@ -37,6 +37,8 @@ def main():
     builder.services.add_cache(AuthUser)
     builder.services.add_cache(Role)
 
+    builder.services.add_transient(CityGraphType)
+    builder.services.add_transient(UserGraphType)
     builder.services.add_transient(HelloQuery)
 
     app = builder.build()

example/api/src/queries/cities.py

@@ -0,0 +1,39 @@
+from cpl.graphql.schema.filter.filter import Filter
+from cpl.graphql.schema.object_graph_type import ObjectGraphType
+
+from cpl.graphql.schema.sort.sort import Sort
+from cpl.graphql.schema.sort.sort_order import SortOrder
+
+
+class City:
+    def __init__(self, id: int, name: str):
+        self.id = id
+        self.name = name
+
+
+class CityFilter(Filter[City]):
+    def __init__(self):
+        Filter.__init__(self)
+        self.field("id", int)
+        self.field("name", str)
+
+
+class CitySort(Sort[City]):
+    def __init__(self):
+        Sort.__init__(self)
+        self.field("id", SortOrder)
+        self.field("name", SortOrder)
+
+
+class CityGraphType(ObjectGraphType):
+    def __init__(self):
+        ObjectGraphType.__init__(self)
+
+        self.string_field(
+            "id",
+            resolver=lambda user, *_: user.id,
+        )
+        self.string_field(
+            "name",
+            resolver=lambda user, *_: user.name,
+        )

example/api/src/queries/hello.py

@@ -1,6 +1,10 @@
+from api.src.queries.cities import CityFilter, CitySort, CityGraphType, City
+from api.src.queries.user import User, UserFilter, UserSort, UserGraphType
 from cpl.api.middleware.request import get_request
 from cpl.graphql.schema.query import Query
 
+users = [User(i, f"User {i}") for i in range(1, 101)]
+cities = [City(i, f"City {i}") for i in range(1, 101)]
 
 class HelloQuery(Query):
     def __init__(self):
@@ -9,3 +13,18 @@ class HelloQuery(Query):
             "message",
             resolver=lambda *_, name: f"Hello {name} {get_request().state.request_id}",
         ).with_argument(str, "name", "Name to greet", "world")
+
+        self.collection_field(
+            UserGraphType,
+            "users",
+            UserFilter,
+            UserSort,
+            resolver=lambda *_: users,
+        )
+        self.collection_field(
+            CityGraphType,
+            "cities",
+            CityFilter,
+            CitySort,
+            resolver=lambda *_: cities,
+        )

example/api/src/queries/user.py

@@ -0,0 +1,39 @@
+from cpl.graphql.schema.filter.filter import Filter
+from cpl.graphql.schema.object_graph_type import ObjectGraphType
+
+from cpl.graphql.schema.sort.sort import Sort
+from cpl.graphql.schema.sort.sort_order import SortOrder
+
+
+class User:
+    def __init__(self, id: int, name: str):
+        self.id = id
+        self.name = name
+
+
+class UserFilter(Filter[User]):
+    def __init__(self):
+        Filter.__init__(self)
+        self.field("id", int)
+        self.field("name", str)
+
+
+class UserSort(Sort[User]):
+    def __init__(self):
+        Sort.__init__(self)
+        self.field("id", SortOrder)
+        self.field("name", SortOrder)
+
+
+class UserGraphType(ObjectGraphType):
+    def __init__(self):
+        ObjectGraphType.__init__(self)
+
+        self.string_field(
+            "id",
+            resolver=lambda user, *_: user.id,
+        )
+        self.string_field(
+            "name",
+            resolver=lambda user, *_: user.name,
+        )

src/cpl-dependency/cpl/dependency/service_provider.py

@@ -25,7 +25,7 @@ class ServiceProvider:
 
         for descriptor in self._service_descriptors:
             if typing.get_origin(service_type) is None and (
-                descriptor.service_type == service_type
+                descriptor.service_type.__name__ == service_type.__name__
                 or typing.get_origin(descriptor.base_type) is None
                 and issubclass(descriptor.base_type, service_type)
             ):

src/cpl-graphql/cpl/graphql/graphql_module.py

@@ -1,15 +1,17 @@
 from cpl.api.api_module import ApiModule
 from cpl.dependency.module.module import Module
 from cpl.dependency.service_provider import ServiceProvider
+from cpl.graphql.schema.collection import CollectionGraphType
 from cpl.graphql.schema.root_query import RootQuery
 from cpl.graphql.service.schema import Schema
 from cpl.graphql.service.service import GraphQLService
+from cpl.graphql.service.type_converter import TypeConverter
 
 
 class GraphQLModule(Module):
     dependencies = [ApiModule]
-    singleton = [Schema]
+    singleton = [TypeConverter, Schema]
-    scoped = [GraphQLService, RootQuery]
+    scoped = [GraphQLService, RootQuery, CollectionGraphType]
 
     @staticmethod
     def configure(services: ServiceProvider) -> None:

src/cpl-graphql/cpl/graphql/schema/collection.py

@@ -0,0 +1,18 @@
+from typing import Generic, Type
+
+from cpl.core.typing import T
+from cpl.graphql.schema.graph_type import GraphType
+
+
+class Collection(Generic[T]):
+    def __init__(self, nodes: list[T], total_count: int, count: int):
+        self.nodes = nodes
+        self.totalCount = total_count
+        self.count = count
+
+class CollectionGraphType(GraphType[T]):
+    def __init__(self, t: Type[GraphType[T]]):
+        GraphType.__init__(self)
+        self.string_field("totalCount", resolver=lambda obj, *_: obj.totalCount)
+        self.string_field("count", resolver=lambda obj, *_: obj.count)
+        self.list_field("nodes", t, resolver=lambda obj, *_: obj.nodes)

src/cpl-graphql/cpl/graphql/schema/field.py

@@ -1,12 +1,12 @@
 from typing import Self
 
 from cpl.graphql.schema.argument import Argument
-from cpl.graphql.typing import TQuery
+from cpl.graphql.typing import TQuery, Resolver
 
 
 class Field:
 
-    def __init__(self, name: str, gql_type: type, resolver: callable, subquery: TQuery | None = None):
+    def __init__(self, name: str, gql_type: type, resolver: Resolver = None, subquery: TQuery = None):
         self._name = name
         self._gql_type = gql_type
         self._resolver = resolver
@@ -37,7 +37,7 @@ class Field:
     def with_argument(self, arg_type: type, name: str, description: str = None, default_value=None) -> Self:
         if name in self._args:
             raise ValueError(f"Argument with name '{name}' already exists in field '{self._name}'")
-        self._args[name] = Argument(name, arg_type, description, default_value)
+        self._args[name] = Argument(arg_type, name, description, default_value)
         return self
 
     def with_arguments(self, args: list[Argument]) -> Self:
@@ -45,5 +45,5 @@ class Field:
             if not isinstance(arg, Argument):
                 raise ValueError(f"Expected Argument instance, got {type(arg)}")
 
-            self.with_argument(arg.name, arg.type, arg.description, arg.default_value)
+            self.with_argument(arg.type, arg.name, arg.description, arg.default_value)
         return self

src/cpl-graphql/cpl/graphql/schema/filter/filter.py

@@ -0,0 +1,9 @@
+from cpl.core.typing import T
+from cpl.graphql.schema.input import Input
+
+
+class Filter(Input[T]):
+    def __init__(
+        self,
+    ):
+        Input.__init__(self)

src/cpl-graphql/cpl/graphql/schema/graph_type.py

@@ -0,0 +1,10 @@
+from typing import Generic
+
+from cpl.core.typing import T
+from cpl.graphql.schema.query import Query
+
+
+class GraphType(Generic[T], Query):
+
+    def __init__(self):
+        Query.__init__(self)

src/cpl-graphql/cpl/graphql/schema/input.py

@@ -0,0 +1,26 @@
+from datetime import datetime
+from enum import Enum
+from typing import Type, Generic
+
+import graphene
+
+from cpl.core.typing import T
+from cpl.graphql.schema.field import Field
+
+
+class Input(Generic[T], graphene.InputObjectType):
+    def __init__(
+        self,
+    ):
+        graphene.InputObjectType.__init__(self)
+        self._fields: dict[str, Field] = {}
+
+    def get_fields(self) -> dict[str, Field]:
+        return self._fields
+
+    def field(
+        self,
+        field: str,
+        t: Type["Input"] | Type[int | str | bool | datetime | list | Enum],
+    ):
+        self._fields[field] = Field(field, t)

src/cpl-graphql/cpl/graphql/schema/object_graph_type.py

@@ -0,0 +1,9 @@
+from cpl.core.typing import T
+from cpl.graphql.schema.graph_type import GraphType
+from cpl.graphql.schema.query import Query
+
+
+class ObjectGraphType(GraphType[T], Query):
+
+    def __init__(self):
+        Query.__init__(self)

src/cpl-graphql/cpl/graphql/schema/query.py

@@ -2,9 +2,12 @@ from typing import Callable, Type
 
 from graphene import ObjectType
 
+from cpl.graphql.schema.argument import Argument
 from cpl.graphql.schema.field import Field
+from cpl.graphql.schema.filter.filter import Filter
+from cpl.graphql.schema.sort.sort import Sort
+from cpl.graphql.schema.sort.sort_order import SortOrder
 from cpl.graphql.typing import Resolver
-from cpl.graphql.utils.type_converter import TypeConverter
 
 
 class Query(ObjectType):
@@ -32,7 +35,7 @@ class Query(ObjectType):
     def with_query(self, name: str, subquery: Type["Query"]):
         from cpl.graphql.schema.field import Field
 
-        f = Field(name=name, gql_type=object, resolver=lambda root, info, **kwargs: {}, subquery=subquery)
+        f = Field(name=name, gql_type=subquery, resolver=lambda root, info, **kwargs: {}, subquery=subquery)
         self._fields[name] = f
         return self._fields[name]
 
@@ -47,3 +50,44 @@ class Query(ObjectType):
 
     def bool_field(self, name: str, resolver: Resolver = None) -> "Field":
         return self.field(name, bool, resolver)
+
+    def list_field(self, name: str, t: type, resolver: Resolver = None) -> "Field":
+        return self.field(name, list[t], resolver)
+
+    def collection_field(
+        self, t: type, name: str, filter_type: type, sort_type: type, resolver: Resolver = None
+    ) -> "Field":
+        from cpl.graphql.schema.collection import Collection, CollectionGraphType
+
+        def _resolve_collection(*_, filter: Filter, sort: Sort, skip: int, take: int):
+            items = resolver()
+
+            for field in filter or []:
+                if filter[field] is None:
+                    continue
+
+                items = [item for item in items if getattr(item, field) == filter[field]]
+
+            for field in sort or []:
+                if sort[field] is None:
+                    continue
+
+                reverse = sort[field] == SortOrder.DESC
+                items = sorted(items, key=lambda item: getattr(item, field), reverse=reverse)
+
+            total_count = len(items)
+            paged = items[skip : skip + take]
+            return Collection(nodes=paged, total_count=total_count, count=len(paged))
+
+        # base = getattr(t, "__gqlname__", t.__class__.__name__)
+        wrapper = CollectionGraphType(t)
+        # wrapper.set_graphql_name(f"{base}Collection")
+        f = self.field(name, wrapper, resolver=_resolve_collection)
+        return f.with_arguments(
+            [
+                Argument(filter_type, "filter"),
+                Argument(sort_type, "sort"),
+                Argument(int, "skip", default_value=0),
+                Argument(int, "take", default_value=10),
+            ]
+        )

src/cpl-graphql/cpl/graphql/schema/sort/sort.py

@@ -0,0 +1,9 @@
+from cpl.core.typing import T
+from cpl.graphql.schema.input import Input
+
+
+class Sort(Input[T]):
+    def __init__(
+        self,
+    ):
+        Input.__init__(self)

src/cpl-graphql/cpl/graphql/schema/sort/sort_order.py

@@ -0,0 +1,6 @@
+from enum import Enum, auto
+
+
+class SortOrder(Enum):
+    ASC = auto()
+    DESC = auto()

src/cpl-graphql/cpl/graphql/service/schema.py

@@ -1,21 +1,22 @@
-from typing import Type
-
 import graphene
 
 from cpl.api.logger import APILogger
 from cpl.dependency.service_provider import ServiceProvider
-from cpl.graphql.schema.argument import Argument
+from cpl.graphql.schema.collection import CollectionGraphType
-from cpl.graphql.schema.query import Query
+from cpl.graphql.schema.graph_type import GraphType
 from cpl.graphql.schema.root_query import RootQuery
-from cpl.graphql.typing import Resolver
+from cpl.graphql.service.type_converter import TypeConverter
-from cpl.graphql.utils.type_converter import TypeConverter
 
 
 class Schema:
 
-    def __init__(self, logger: APILogger, query: RootQuery, provider: ServiceProvider):
+    def __init__(self, logger: APILogger, converter: TypeConverter, query: RootQuery, provider: ServiceProvider):
         self._logger = logger
         self._provider = provider
+        self._converter = converter
+
+        self._types = set(GraphType.__subclasses__())
+        self._types.remove(CollectionGraphType)
 
         self._query = query
         self._schema = None
@@ -28,37 +29,15 @@ class Schema:
     def query(self) -> RootQuery:
         return self._query
 
+    def with_type(self, t: type[GraphType]):
+        self._types.add(t)
+        return self
+
     def build(self) -> graphene.Schema:
         self._schema = graphene.Schema(
-            query=self.to_graphene(self._query),
+            query=self._converter.to_graphene(self._query),
             mutation=None,
             subscription=None,
+            # types=[self._converter.to_graphene(t) for t in self._types] if len(self._types) > 0 else None,
         )
         return self._schema
-
-    @staticmethod
-    def _field_to_graphene(t: Type[graphene.Scalar] | type, args: dict[str, Argument] = None, resolver: Resolver = None) -> graphene.Field:
-        arguments = {}
-        if args is not None:
-            arguments = {
-                arg.name: graphene.Argument(TypeConverter.to_graphene(arg.type), description=arg.description, default_value=arg.default_value)
-                for arg in args.values()
-            }
-
-        return graphene.Field(t, args=arguments, resolver=resolver)
-
-    def to_graphene(self, query: Query, name: str | None = None):
-        assert query is not None, "Query cannot be None"
-        attrs = {}
-
-        for field in query.get_fields().values():
-            if field.type == object and field.subquery is not None:
-                subquery = self._provider.get_service(field.subquery)
-                sub = self.to_graphene(subquery, name=field.name.capitalize())
-                attrs[field.name] = self._field_to_graphene(sub, field.args, field.resolver)
-                continue
-
-            attrs[field.name] = self._field_to_graphene(TypeConverter.to_graphene(field.type), field.args, field.resolver)
-
-        class_name = name or query.__class__.__name__
-        return type(class_name, (graphene.ObjectType,), attrs)

src/cpl-graphql/cpl/graphql/service/type_converter.py

@@ -0,0 +1,89 @@
+import typing
+from enum import Enum
+from inspect import isclass
+
+import graphene
+from typing import Any, get_origin, get_args
+
+from cpl.dependency import ServiceProvider
+from cpl.graphql.schema.argument import Argument
+from cpl.graphql.schema.filter.filter import Filter
+from cpl.graphql.schema.graph_type import GraphType
+from cpl.graphql.schema.object_graph_type import ObjectGraphType
+from cpl.graphql.schema.sort.sort import Sort
+from cpl.graphql.typing import Resolver
+from cpl.graphql.utils.name_pipe import NamePipe
+
+
+class TypeConverter:
+    __scalar_map: dict[Any, type[graphene.Scalar]] = {
+        str: graphene.String,
+        int: graphene.Int,
+        float: graphene.Float,
+        bool: graphene.Boolean,
+    }
+
+    def __init__(self, provider: ServiceProvider):
+        self._provider = provider
+
+    def _field_to_graphene(self, t: typing.Type[graphene.Scalar] | type, args: dict[str, Argument] = None, resolver: Resolver = None) -> graphene.Field:
+        arguments = {}
+        if args is not None:
+            arguments = {
+                arg.name: graphene.Argument(self.to_graphene(arg.type), name=arg.name, description=arg.description, default_value=arg.default_value)
+                for arg in args.values()
+            }
+
+        return graphene.Field(t, args=arguments, resolver=resolver)
+
+    def to_graphene(self, t: Any, name: str | None = None) -> Any:
+        try:
+            origin = get_origin(t)
+            args = get_args(t)
+
+            if t in self.__scalar_map:
+                return self.__scalar_map[t]
+
+            if origin in (list, typing.List):
+                if not args:
+                    raise ValueError("List must specify element type, e.g. list[str]")
+                inner = self.to_graphene(args[0])
+                return graphene.List(inner)
+
+            if t is list or t is typing.List:
+                raise ValueError("List must be parametrized: list[str], list[int], list[UserQuery]")
+
+            if isclass(t) and issubclass(t, Enum):
+                return graphene.Enum.from_enum(t)
+
+            from cpl.graphql.schema.query import Query
+            if isinstance(t, type) and issubclass(t, (Query)):
+                query = self._provider.get_service(t)
+                if query is None:
+                    raise ValueError(f"Could not resolve query of type {t}")
+
+                t = query
+
+            if isinstance(t, type) and issubclass(t, (ObjectGraphType, GraphType, Filter, Sort)):
+                t = t()
+
+            if isinstance(t, (Query, Filter, Sort)):
+                attrs = {}
+                for field in t.get_fields().values():
+                    if isclass(field.type) and issubclass(field.type, Query) and field.subquery is not None:
+                        subquery = self._provider.get_service(field.subquery)
+                        sub = self.to_graphene(subquery, name=field.name.capitalize())
+                        attrs[field.name] = self._field_to_graphene(sub, field.args, field.resolver)
+                        continue
+
+                    attrs[field.name] = self._field_to_graphene(self.to_graphene(field.type), field.args, field.resolver)
+
+                class_name = NamePipe.to_str(name or t.__class__)
+                if isinstance(t, (Filter, Sort)):
+                    return type(class_name, (graphene.InputObjectType,), attrs)
+
+                return type(class_name, (graphene.ObjectType,), attrs)
+
+            raise ValueError(f"Unsupported field type: {t}")
+        except Exception as e:
+            raise ValueError(f"Failed to convert type {t} to graphene type: {e}") from e

src/cpl-graphql/cpl/graphql/utils/name_pipe.py

@@ -0,0 +1,28 @@
+from cpl.core.pipes import PipeABC
+from cpl.core.typing import T
+from cpl.graphql.schema.collection import CollectionGraphType
+from cpl.graphql.schema.graph_type import GraphType
+from cpl.graphql.schema.object_graph_type import ObjectGraphType
+
+
+class NamePipe(PipeABC):
+
+    @staticmethod
+    def to_str(value: type, *args) -> str:
+        if isinstance(value, str):
+            return value
+
+        if not isinstance(value, type):
+            raise ValueError(f"Expected a type, got {type(value)}")
+
+        if issubclass(value, CollectionGraphType):
+            return f"{value.__name__.replace(GraphType.__name__, "")}"
+
+        if issubclass(value, (ObjectGraphType, GraphType)):
+            return value.__name__.replace(GraphType.__name__, "")
+
+        return value.__name__
+
+    @staticmethod
+    def from_str(value: str, *args) -> T:
+        pass

src/cpl-graphql/cpl/graphql/utils/type_converter.py

@@ -1,38 +0,0 @@
-from typing import Type
-
-import graphene
-
-from cpl.graphql.typing import ScalarType
-
-
-class TypeConverter:
-
-    @staticmethod
-    def from_graphene(t: Type[graphene.Scalar]) -> ScalarType:
-        graphene_type_map: dict[Type[graphene.Scalar], ScalarType] = {
-            graphene.String: str,
-            graphene.Int: int,
-            graphene.Float: float,
-            graphene.Boolean: bool,
-            graphene.ObjectType: object,
-        }
-
-        if t not in graphene_type_map:
-            raise ValueError(f"Unsupported field type: {t}")
-
-        return graphene_type_map[t]
-
-    @staticmethod
-    def to_graphene(t: ScalarType) -> Type[graphene.Scalar]:
-        type_graphene_map: dict[ScalarType, Type[graphene.Scalar]] = {
-            str: graphene.String,
-            int: graphene.Int,
-            float: graphene.Float,
-            bool: graphene.Boolean,
-            object: graphene.ObjectType,
-        }
-
-        if t not in type_graphene_map:
-            raise ValueError(f"Unsupported field type: {t}")
-
-        return type_graphene_map[t]