2020-05-02 04:32:56 +12:00
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defmodule AshGraphql do
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@moduledoc """
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2020-08-14 10:55:34 +12:00
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AshGraphql is a graphql front extension for the Ash framework.
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2020-09-24 13:32:45 +12:00
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See the [getting started guide](/getting_started.md) for information on setting it up, and
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2020-08-14 10:55:34 +12:00
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see the `AshGraphql.Resource` documentation for docs on its DSL
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2020-05-02 04:32:56 +12:00
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"""
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2020-08-14 09:39:59 +12:00
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defmacro __using__(opts) do
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2020-09-24 12:54:57 +12:00
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quote bind_quoted: [apis: opts[:apis], api: opts[:api]] do
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apis =
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api
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|> List.wrap()
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|> Kernel.++(List.wrap(apis))
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2020-12-02 18:55:25 +13:00
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apis =
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apis
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2020-12-01 13:16:37 +13:00
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|> Enum.map(&{&1, false})
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|> List.update_at(0, fn {api, _} -> {api, true} end)
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2020-09-24 12:54:57 +12:00
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2020-12-01 13:19:11 +13:00
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for {api, first?} <- apis do
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2020-09-24 12:54:57 +12:00
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defmodule Module.concat(api, AshTypes) do
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@moduledoc false
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alias Absinthe.{Blueprint, Phase, Pipeline}
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2020-12-02 18:55:25 +13:00
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Code.ensure_compiled(api)
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2020-09-24 12:54:57 +12:00
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def pipeline(pipeline) do
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Pipeline.insert_before(
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pipeline,
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2021-03-13 03:19:33 +13:00
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Absinthe.Phase.Schema.ApplyDeclaration,
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2020-09-24 12:54:57 +12:00
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__MODULE__
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)
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end
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2020-08-17 19:00:13 +12:00
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2020-09-24 12:54:57 +12:00
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def run(blueprint, _opts) do
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api = unquote(api)
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2020-12-02 18:55:25 +13:00
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Code.ensure_compiled(api)
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blueprint_with_queries =
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api
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|> AshGraphql.Api.queries(__MODULE__)
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|> Enum.reduce(blueprint, fn query, blueprint ->
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Absinthe.Blueprint.add_field(blueprint, "RootQueryType", query)
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end)
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blueprint_with_mutations =
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api
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|> AshGraphql.Api.mutations(__MODULE__)
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|> Enum.reduce(blueprint_with_queries, fn mutation, blueprint ->
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Absinthe.Blueprint.add_field(blueprint, "RootMutationType", mutation)
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end)
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type_definitions =
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if unquote(first?) do
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2021-01-13 09:14:35 +13:00
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embedded_types = AshGraphql.get_embedded_types(unquote(apis))
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2020-12-02 18:55:25 +13:00
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AshGraphql.Api.global_type_definitions(__MODULE__) ++
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2021-01-13 09:14:35 +13:00
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AshGraphql.Api.type_definitions(api, __MODULE__) ++
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embedded_types
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2020-12-02 18:55:25 +13:00
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else
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AshGraphql.Api.type_definitions(api, __MODULE__)
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end
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new_defs =
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List.update_at(blueprint_with_mutations.schema_definitions, 0, fn schema_def ->
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%{
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schema_def
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| type_definitions: schema_def.type_definitions ++ type_definitions
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2020-12-02 18:55:25 +13:00
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}
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end)
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{:ok, %{blueprint_with_mutations | schema_definitions: new_defs}}
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2020-08-17 19:00:13 +12:00
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end
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2020-08-14 09:39:59 +12:00
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end
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2020-05-02 04:32:56 +12:00
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2021-01-13 09:14:35 +13:00
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if first? do
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import_types(Absinthe.Type.Custom)
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import_types(AshGraphql.Types.JSON)
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end
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2020-09-24 12:54:57 +12:00
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@pipeline_modifier Module.concat(api, AshTypes)
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end
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2020-08-14 09:39:59 +12:00
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end
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2020-05-02 04:32:56 +12:00
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end
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2020-08-15 02:20:47 +12:00
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2021-01-13 09:14:35 +13:00
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def get_embedded_types(apis) do
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apis
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|> Enum.map(&elem(&1, 0))
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|> Enum.flat_map(&Ash.Api.resources/1)
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2021-02-23 17:28:01 +13:00
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|> Enum.flat_map(fn resource ->
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resource
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|> Ash.Resource.Info.public_attributes()
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|> Enum.map(&{resource, &1})
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end)
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|> Enum.filter(fn {_resource, attribute} ->
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Ash.Type.embedded_type?(attribute.type)
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end)
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|> Enum.map(fn
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2021-02-23 17:28:01 +13:00
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{source_resource, attribute} ->
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{source_resource, attribute, embedded_resource(attribute.type)}
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2021-01-13 09:14:35 +13:00
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end)
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2021-02-23 17:28:01 +13:00
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|> Enum.flat_map(fn {source_resource, attribute, embedded} ->
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[{source_resource, attribute, embedded}] ++ get_nested_embedded_types(embedded)
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end)
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2021-02-23 17:28:01 +13:00
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|> Enum.flat_map(fn {source_resource, attribute, embedded_type} ->
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if AshGraphql.Resource.type(embedded_type) do
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[
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AshGraphql.Resource.type_definition(
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embedded_type,
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Module.concat(embedded_type, ShadowApi),
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__MODULE__
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),
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AshGraphql.Resource.embedded_type_input(
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source_resource,
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attribute,
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embedded_type,
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__MODULE__
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)
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]
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else
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[
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AshGraphql.Resource.embedded_type_input(
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source_resource,
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attribute,
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embedded_type,
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__MODULE__
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)
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]
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end
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2021-01-13 09:14:35 +13:00
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end)
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end
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2021-02-23 17:28:01 +13:00
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defp embedded_resource({:array, type}), do: embedded_resource(type)
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defp embedded_resource(type), do: type
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2021-01-13 09:14:35 +13:00
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defp get_nested_embedded_types(embedded_type) do
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embedded_type
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2021-02-23 17:28:01 +13:00
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|> Ash.Resource.Info.public_attributes()
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|> Enum.filter(&Ash.Type.embedded_type?(&1.type))
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|> Enum.map(fn attribute ->
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{attribute, embedded_resource(attribute.type)}
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2021-01-13 09:14:35 +13:00
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end)
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2021-02-23 17:28:01 +13:00
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|> Enum.flat_map(fn {attribute, embedded} ->
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[{embedded_type, attribute, embedded}] ++ get_nested_embedded_types(embedded)
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2021-01-13 09:14:35 +13:00
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end)
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end
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2020-09-24 12:54:57 +12:00
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def add_context(ctx, apis) do
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dataloader =
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apis
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|> List.wrap()
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|> Enum.reduce(Dataloader.new(), fn api, dataloader ->
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Dataloader.add_source(
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dataloader,
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api,
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AshGraphql.Dataloader.new(api)
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)
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end)
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2020-10-28 19:16:16 +13:00
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Map.put(ctx, :loader, dataloader)
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2020-08-15 02:20:47 +12:00
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end
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2020-05-02 04:32:56 +12:00
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end
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