Interface

Author: kamilkisiela

src/changes/argument.ts

@@ -1,10 +1,10 @@
-import { GraphQLArgument, GraphQLObjectType, GraphQLField } from 'graphql';
+import { GraphQLArgument, GraphQLObjectType, GraphQLField, GraphQLInterfaceType } from 'graphql';
 
 import { Change, CriticalityLevel } from './change';
 import { safeChangeForInputValue } from '../utils/graphql';
 
 export function fieldArgumentDescriptionChanged(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   field: GraphQLField<any, any, any>,
   oldArg: GraphQLArgument,
   newArg: GraphQLArgument,
@@ -23,7 +23,7 @@ export function fieldArgumentDescriptionChanged(
 }
 
 export function fieldArgumentDefaultChanged(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   field: GraphQLField<any, any, any>,
   oldArg: GraphQLArgument,
   newArg: GraphQLArgument,
@@ -47,7 +47,7 @@ export function fieldArgumentDefaultChanged(
 }
 
 export function fieldArgumentTypeChanged(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   field: GraphQLField<any, any, any>,
   oldArg: GraphQLArgument,
   newArg: GraphQLArgument,

src/changes/field.ts

@@ -3,13 +3,14 @@ import {
   GraphQLField,
   GraphQLArgument,
   isNonNullType,
+  GraphQLInterfaceType,
 } from 'graphql';
 
 import { Change, CriticalityLevel } from './change';
 import { safeChangeForField } from '../utils/graphql';
 
 export function fieldRemoved(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   field: GraphQLField<any, any, any>,
 ): Change {
   return {
@@ -27,7 +28,7 @@ export function fieldRemoved(
 }
 
 export function fieldAdded(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   field: GraphQLField<any, any, any>,
 ): Change {
   return {
@@ -40,7 +41,7 @@ export function fieldAdded(
 }
 
 export function fieldDescriptionChanged(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   oldField: GraphQLField<any, any>,
   newField: GraphQLField<any, any>,
 ): Change {
@@ -56,7 +57,7 @@ export function fieldDescriptionChanged(
 }
 
 export function fieldDeprecationReasonChanged(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   oldField: GraphQLField<any, any>,
   newField: GraphQLField<any, any>,
 ): Change {
@@ -74,7 +75,7 @@ export function fieldDeprecationReasonChanged(
 }
 
 export function fieldTypeChanged(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   oldField: GraphQLField<any, any, any>,
   newField: GraphQLField<any, any, any>,
 ): Change {
@@ -92,7 +93,7 @@ export function fieldTypeChanged(
 }
 
 export function fieldArgumentAdded(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   field: GraphQLField<any, any, any>,
   arg: GraphQLArgument,
 ): Change {
@@ -113,7 +114,7 @@ export function fieldArgumentAdded(
 }
 
 export function fieldArgumentRemoved(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   field: GraphQLField<any, any, any>,
   arg: GraphQLArgument,
 ): Change {

src/diff/argument.ts

@@ -3,6 +3,7 @@ import {
   GraphQLObjectType,
   GraphQLField,
   isEqualType,
+  GraphQLInterfaceType,
 } from 'graphql';
 
 import { Change } from '../changes/change';
@@ -13,7 +14,7 @@ import {
 } from '../changes/argument';
 
 export function changesInArgument(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   field: GraphQLField<any, any, any>,
   oldArg: GraphQLArgument,
   newArg: GraphQLArgument,

src/diff/field.ts

@@ -3,6 +3,7 @@ import {
   GraphQLObjectType,
   GraphQLArgument,
   isEqualType,
+  GraphQLInterfaceType,
 } from 'graphql';
 
 import { Change } from '../changes/change';
@@ -17,7 +18,7 @@ import { changesInArgument } from './argument';
 import { unionArrays, diffArrays } from '../utils/arrays';
 
 export function changesInField(
-  type: GraphQLObjectType,
+  type: GraphQLObjectType | GraphQLInterfaceType,
   oldField: GraphQLField<any, any>,
   newField: GraphQLField<any, any>,
 ): Change[] {

src/diff/interface.ts

@@ -0,0 +1,64 @@
+import { GraphQLInterfaceType } from 'graphql';
+
+import { Change } from '../changes/change';
+import { fieldRemoved, fieldAdded } from '../changes/field';
+import { changesInField } from './field';
+import { diffArrays, unionArrays } from '../utils/arrays';
+
+export function changesInInterface(
+  oldInterface: GraphQLInterfaceType,
+  newInterface: GraphQLInterfaceType,
+): Change[] {
+  const changes: Change[] = [];
+
+  changes.push(...addedFields(oldInterface, newInterface));
+  changes.push(...removedFields(oldInterface, newInterface));
+  changedFields(oldInterface, newInterface).forEach(({ inOld, inNew }) => {
+    changes.push(...changesInField(oldInterface, inOld, inNew));
+  });
+
+  return changes;
+}
+
+function addedFields(
+  oldInterface: GraphQLInterfaceType,
+  newInterface: GraphQLInterfaceType,
+): Change[] {
+  const oldFields = oldInterface.getFields();
+  const newFields = newInterface.getFields();
+  const oldNames = Object.keys(oldFields);
+  const newNames = Object.keys(newFields);
+
+  return diffArrays(newNames, oldNames)
+    .map(name => newFields[name])
+    .map(f => fieldAdded(newInterface, f));
+}
+
+function removedFields(
+  oldInterface: GraphQLInterfaceType,
+  newInterface: GraphQLInterfaceType,
+): Change[] {
+  const oldFields = oldInterface.getFields();
+  const newFields = newInterface.getFields();
+  const oldNames = Object.keys(oldFields);
+  const newNames = Object.keys(newFields);
+
+  return diffArrays(oldNames, newNames)
+    .map(name => newFields[name])
+    .map(f => fieldRemoved(oldInterface, f));
+}
+
+function changedFields(
+  oldInterface: GraphQLInterfaceType,
+  newInterface: GraphQLInterfaceType,
+) {
+  const oldFields = oldInterface.getFields();
+  const newFields = newInterface.getFields();
+  const oldNames = Object.keys(oldFields);
+  const newNames = Object.keys(newFields);
+
+  return unionArrays(oldNames, newNames).map(name => ({
+    inOld: oldFields[name],
+    inNew: newFields[name],
+  }));
+}

src/diff/schema.ts

@@ -11,6 +11,7 @@ import {
   isInputObjectType,
   isObjectType,
   isInterfaceType,
+  GraphQLInterfaceType,
 } from 'graphql';
 
 import { unionArrays, diffArrays } from '../utils/arrays';
@@ -32,6 +33,7 @@ import { changesInEnum } from './enum';
 import { changesInUnion } from './union';
 import { changesInInputObject } from './input';
 import { changesInObject } from './object';
+import { changesInInterface } from './interface';
 
 export function diff(
   oldSchema: GraphQLSchema,
@@ -184,7 +186,9 @@ function changesInType(
     } else if (isObjectType(oldType)) {
       changes.push(...changesInObject(oldType, newType as GraphQLObjectType));
     } else if (isInterfaceType(oldType)) {
-      // TODO: interface
+      changes.push(
+        ...changesInInterface(oldType, newType as GraphQLInterfaceType),
+      );
     }
   }