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Maven plugin for generating graphql clients
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const path = require("path");
const graphql_1 = require("graphql");
const printing_1 = require("apollo-codegen-core/lib/utilities/printing");
const language_1 = require("./language");
const helpers_1 = require("./helpers");
const graphql_2 = require("apollo-codegen-core/lib/utilities/graphql");
const typeCase_1 = require("apollo-codegen-core/lib/compiler/visitors/typeCase");
const collectFragmentsReferenced_1 = require("apollo-codegen-core/lib/compiler/visitors/collectFragmentsReferenced");
const generateOperationId_1 = require("apollo-codegen-core/lib/compiler/visitors/generateOperationId");
const collectAndMergeFields_1 = require("apollo-codegen-core/lib/compiler/visitors/collectAndMergeFields");
require("apollo-codegen-core/lib/utilities/array");
function generateSource(context, outputIndividualFiles, only) {
const generator = new SwiftAPIGenerator(context);
if (outputIndividualFiles) {
generator.withinFile(`Types.graphql.swift`, () => {
generator.fileHeader();
generator.namespaceDeclaration(context.options.namespace, () => {
context.typesUsed.forEach(type => {
generator.typeDeclarationForGraphQLType(type);
});
});
});
const inputFilePaths = new Set();
Object.values(context.operations).forEach(operation => {
inputFilePaths.add(operation.filePath);
});
Object.values(context.fragments).forEach(fragment => {
inputFilePaths.add(fragment.filePath);
});
for (const inputFilePath of inputFilePaths) {
if (only && inputFilePath !== only)
continue;
generator.withinFile(`${path.basename(inputFilePath)}.swift`, () => {
generator.fileHeader();
generator.namespaceExtensionDeclaration(context.options.namespace, () => {
Object.values(context.operations).forEach(operation => {
if (operation.filePath === inputFilePath) {
generator.classDeclarationForOperation(operation);
}
});
Object.values(context.fragments).forEach(fragment => {
if (fragment.filePath === inputFilePath) {
generator.structDeclarationForFragment(fragment);
}
});
});
});
}
}
else {
generator.fileHeader();
generator.namespaceDeclaration(context.options.namespace, () => {
context.typesUsed.forEach(type => {
generator.typeDeclarationForGraphQLType(type);
});
Object.values(context.operations).forEach(operation => {
generator.classDeclarationForOperation(operation);
});
Object.values(context.fragments).forEach(fragment => {
generator.structDeclarationForFragment(fragment);
});
});
}
return generator;
}
exports.generateSource = generateSource;
class SwiftAPIGenerator extends language_1.SwiftGenerator {
constructor(context) {
super(context);
this.helpers = new helpers_1.Helpers(context.options);
}
fileHeader() {
this.printOnNewline('// This file was automatically generated and should not be edited.');
this.printNewline();
this.printOnNewline('import Apollo');
}
classDeclarationForOperation(operation) {
const { operationName, operationType, variables, source, selectionSet } = operation;
let className;
let protocol;
switch (operationType) {
case 'query':
className = `${this.helpers.operationClassName(operationName)}Query`;
protocol = 'GraphQLQuery';
break;
case 'mutation':
className = `${this.helpers.operationClassName(operationName)}Mutation`;
protocol = 'GraphQLMutation';
break;
case 'subscription':
className = `${this.helpers.operationClassName(operationName)}Subscription`;
protocol = 'GraphQLSubscription';
break;
default:
throw new graphql_1.GraphQLError(`Unsupported operation type "${operationType}"`);
}
this.classDeclaration({
className,
modifiers: ['public', 'final'],
adoptedProtocols: [protocol]
}, () => {
if (source) {
this.printOnNewline('public let operationDefinition =');
this.withIndent(() => {
this.multilineString(source);
});
}
const fragmentsReferenced = collectFragmentsReferenced_1.collectFragmentsReferenced(operation.selectionSet, this.context.fragments);
if (this.context.options.generateOperationIds) {
const { operationId } = generateOperationId_1.generateOperationId(operation, this.context.fragments, fragmentsReferenced);
operation.operationId = operationId;
this.printNewlineIfNeeded();
this.printOnNewline(`public let operationIdentifier: String? = "${operationId}"`);
}
if (fragmentsReferenced.size > 0) {
this.printNewlineIfNeeded();
this.printOnNewline('public var queryDocument: String { return operationDefinition');
fragmentsReferenced.forEach(fragmentName => {
this.print(`.appending(${this.helpers.structNameForFragmentName(fragmentName)}.fragmentDefinition)`);
});
this.print(' }');
}
this.printNewlineIfNeeded();
if (variables && variables.length > 0) {
const properties = variables.map(({ name, type }) => {
const typeName = this.helpers.typeNameFromGraphQLType(type);
const isOptional = !(type instanceof graphql_1.GraphQLNonNull ||
(type instanceof graphql_1.GraphQLList && type.ofType instanceof graphql_1.GraphQLNonNull));
return { name, propertyName: name, type, typeName, isOptional };
});
this.propertyDeclarations(properties);
this.printNewlineIfNeeded();
this.initializerDeclarationForProperties(properties);
this.printNewlineIfNeeded();
this.printOnNewline(`public var variables: GraphQLMap?`);
this.withinBlock(() => {
this.printOnNewline(printing_1.wrap(`return [`, printing_1.join(properties.map(({ name, propertyName }) => `"${name}": ${language_1.escapeIdentifierIfNeeded(propertyName)}`), ', ') || ':', `]`));
});
}
else {
this.initializerDeclarationForProperties([]);
}
this.structDeclarationForSelectionSet({
structName: 'Data',
selectionSet
});
});
}
structDeclarationForFragment({ fragmentName, selectionSet, source }) {
const structName = this.helpers.structNameForFragmentName(fragmentName);
this.structDeclarationForSelectionSet({
structName,
adoptedProtocols: ['GraphQLFragment'],
selectionSet
}, () => {
if (source) {
this.printOnNewline('public static let fragmentDefinition =');
this.withIndent(() => {
this.multilineString(source);
});
}
});
}
structDeclarationForSelectionSet({ structName, adoptedProtocols = ['GraphQLSelectionSet'], selectionSet }, before) {
const typeCase = typeCase_1.typeCaseForSelectionSet(selectionSet, this.context.options.mergeInFieldsFromFragmentSpreads);
this.structDeclarationForVariant({
structName,
adoptedProtocols,
variant: typeCase.default,
typeCase
}, before, () => {
const variants = typeCase.variants.map(this.helpers.propertyFromVariant, this.helpers);
for (const variant of variants) {
this.propertyDeclarationForVariant(variant);
this.structDeclarationForVariant({
structName: variant.structName,
variant
});
}
});
}
structDeclarationForVariant({ structName, adoptedProtocols = ['GraphQLSelectionSet'], variant, typeCase }, before, after) {
this.structDeclaration({ structName, adoptedProtocols }, () => {
if (before) {
before();
}
this.printNewlineIfNeeded();
this.printOnNewline('public static let possibleTypes = [');
this.print(printing_1.join(variant.possibleTypes.map(type => `"${type.name}"`), ', '));
this.print(']');
this.printNewlineIfNeeded();
this.printOnNewline('public static let selections: [GraphQLSelection] = ');
if (typeCase) {
this.typeCaseInitialization(typeCase);
}
else {
this.selectionSetInitialization(variant);
}
this.printNewlineIfNeeded();
this.printOnNewline(`public private(set) var resultMap: ResultMap`);
this.printNewlineIfNeeded();
this.printOnNewline('public init(unsafeResultMap: ResultMap)');
this.withinBlock(() => {
this.printOnNewline(`self.resultMap = unsafeResultMap`);
});
if (typeCase) {
this.initializersForTypeCase(typeCase);
}
else {
this.initializersForVariant(variant);
}
const fields = collectAndMergeFields_1.collectAndMergeFields(variant, this.context.options.mergeInFieldsFromFragmentSpreads).map(field => this.helpers.propertyFromField(field));
const fragmentSpreads = variant.fragmentSpreads.map(fragmentSpread => {
const isConditional = variant.possibleTypes.some(type => !fragmentSpread.selectionSet.possibleTypes.includes(type));
return this.helpers.propertyFromFragmentSpread(fragmentSpread, isConditional);
});
fields.forEach(this.propertyDeclarationForField, this);
if (fragmentSpreads.length > 0) {
this.printNewlineIfNeeded();
this.printOnNewline(`public var fragments: Fragments`);
this.withinBlock(() => {
this.printOnNewline('get');
this.withinBlock(() => {
this.printOnNewline(`return Fragments(unsafeResultMap: resultMap)`);
});
this.printOnNewline('set');
this.withinBlock(() => {
this.printOnNewline(`resultMap += newValue.resultMap`);
});
});
this.structDeclaration({
structName: 'Fragments'
}, () => {
this.printOnNewline(`public private(set) var resultMap: ResultMap`);
this.printNewlineIfNeeded();
this.printOnNewline('public init(unsafeResultMap: ResultMap)');
this.withinBlock(() => {
this.printOnNewline(`self.resultMap = unsafeResultMap`);
});
for (const fragmentSpread of fragmentSpreads) {
const { propertyName, typeName, structName, isConditional } = fragmentSpread;
this.printNewlineIfNeeded();
this.printOnNewline(`public var ${language_1.escapeIdentifierIfNeeded(propertyName)}: ${typeName}`);
this.withinBlock(() => {
this.printOnNewline('get');
this.withinBlock(() => {
if (isConditional) {
this.printOnNewline(`if !${structName}.possibleTypes.contains(resultMap["__typename"]! as! String) { return nil }`);
}
this.printOnNewline(`return ${structName}(unsafeResultMap: resultMap)`);
});
this.printOnNewline('set');
this.withinBlock(() => {
if (isConditional) {
this.printOnNewline(`guard let newValue = newValue else { return }`);
this.printOnNewline(`resultMap += newValue.resultMap`);
}
else {
this.printOnNewline(`resultMap += newValue.resultMap`);
}
});
});
}
});
}
for (const field of fields) {
if (graphql_1.isCompositeType(graphql_1.getNamedType(field.type)) && field.selectionSet) {
this.structDeclarationForSelectionSet({
structName: field.structName,
selectionSet: field.selectionSet
});
}
}
if (after) {
after();
}
});
}
initializersForTypeCase(typeCase) {
const variants = typeCase.variants;
if (variants.length == 0) {
this.initializersForVariant(typeCase.default);
}
else {
const remainder = typeCase.remainder;
for (const variant of remainder ? [remainder, ...variants] : variants) {
this.initializersForVariant(variant, variant === remainder ? undefined : this.helpers.structNameForVariant(variant), false);
}
}
}
initializersForVariant(variant, namespace, useInitializerIfPossible = true) {
if (useInitializerIfPossible && variant.possibleTypes.length == 1) {
const properties = this.helpers.propertiesForSelectionSet(variant);
if (!properties)
return;
this.printNewlineIfNeeded();
this.printOnNewline(`public init`);
this.parametersForProperties(properties);
this.withinBlock(() => {
this.printOnNewline(printing_1.wrap(`self.init(unsafeResultMap: [`, printing_1.join([
`"__typename": "${variant.possibleTypes[0]}"`,
...properties.map(this.propertyAssignmentForField, this)
], ', ') || ':', `])`));
});
}
else {
const structName = this.scope.typeName;
for (const possibleType of variant.possibleTypes) {
const properties = this.helpers.propertiesForSelectionSet({
possibleTypes: [possibleType],
selections: variant.selections
}, namespace);
if (!properties)
continue;
this.printNewlineIfNeeded();
this.printOnNewline(`public static func make${possibleType}`);
this.parametersForProperties(properties);
this.print(` -> ${structName}`);
this.withinBlock(() => {
this.printOnNewline(printing_1.wrap(`return ${structName}(unsafeResultMap: [`, printing_1.join([`"__typename": "${possibleType}"`, ...properties.map(this.propertyAssignmentForField, this)], ', ') || ':', `])`));
});
}
}
}
propertyAssignmentForField(field) {
const { responseKey, propertyName, type, isConditional, structName } = field;
const valueExpression = graphql_1.isCompositeType(graphql_1.getNamedType(type))
? this.helpers.mapExpressionForType(type, isConditional, expression => `${expression}.resultMap`, language_1.escapeIdentifierIfNeeded(propertyName), structName, 'ResultMap')
: language_1.escapeIdentifierIfNeeded(propertyName);
return `"${responseKey}": ${valueExpression}`;
}
propertyDeclarationForField(field) {
const { responseKey, propertyName, typeName, type, isOptional, isConditional } = field;
const unmodifiedFieldType = graphql_1.getNamedType(type);
this.printNewlineIfNeeded();
this.comment(field.description);
this.deprecationAttributes(field.isDeprecated, field.deprecationReason);
this.printOnNewline(`public var ${language_1.escapeIdentifierIfNeeded(propertyName)}: ${typeName}`);
this.withinBlock(() => {
if (graphql_1.isCompositeType(unmodifiedFieldType)) {
const structName = language_1.escapeIdentifierIfNeeded(this.helpers.structNameForPropertyName(propertyName));
if (graphql_2.isList(type)) {
this.printOnNewline('get');
this.withinBlock(() => {
const resultMapTypeName = this.helpers.typeNameFromGraphQLType(type, 'ResultMap', false);
let expression;
if (isOptional) {
expression = `(resultMap["${responseKey}"] as? ${resultMapTypeName})`;
}
else {
expression = `(resultMap["${responseKey}"] as! ${resultMapTypeName})`;
}
this.printOnNewline(`return ${this.helpers.mapExpressionForType(type, isConditional, expression => `${structName}(unsafeResultMap: ${expression})`, expression, 'ResultMap', structName)}`);
});
this.printOnNewline('set');
this.withinBlock(() => {
let newValueExpression = this.helpers.mapExpressionForType(type, isConditional, expression => `${expression}.resultMap`, 'newValue', structName, 'ResultMap');
this.printOnNewline(`resultMap.updateValue(${newValueExpression}, forKey: "${responseKey}")`);
});
}
else {
this.printOnNewline('get');
this.withinBlock(() => {
if (isOptional) {
this.printOnNewline(`return (resultMap["${responseKey}"] as? ResultMap).flatMap { ${structName}(unsafeResultMap: $0) }`);
}
else {
this.printOnNewline(`return ${structName}(unsafeResultMap: resultMap["${responseKey}"]! as! ResultMap)`);
}
});
this.printOnNewline('set');
this.withinBlock(() => {
let newValueExpression;
if (isOptional) {
newValueExpression = 'newValue?.resultMap';
}
else {
newValueExpression = 'newValue.resultMap';
}
this.printOnNewline(`resultMap.updateValue(${newValueExpression}, forKey: "${responseKey}")`);
});
}
}
else {
this.printOnNewline('get');
this.withinBlock(() => {
if (isOptional) {
this.printOnNewline(`return resultMap["${responseKey}"] as? ${typeName.slice(0, -1)}`);
}
else {
this.printOnNewline(`return resultMap["${responseKey}"]! as! ${typeName}`);
}
});
this.printOnNewline('set');
this.withinBlock(() => {
this.printOnNewline(`resultMap.updateValue(newValue, forKey: "${responseKey}")`);
});
}
});
}
propertyDeclarationForVariant(variant) {
const { propertyName, typeName, structName } = variant;
this.printNewlineIfNeeded();
this.printOnNewline(`public var ${language_1.escapeIdentifierIfNeeded(propertyName)}: ${typeName}`);
this.withinBlock(() => {
this.printOnNewline('get');
this.withinBlock(() => {
this.printOnNewline(`if !${structName}.possibleTypes.contains(__typename) { return nil }`);
this.printOnNewline(`return ${structName}(unsafeResultMap: resultMap)`);
});
this.printOnNewline('set');
this.withinBlock(() => {
this.printOnNewline(`guard let newValue = newValue else { return }`);
this.printOnNewline(`resultMap = newValue.resultMap`);
});
});
}
initializerDeclarationForProperties(properties) {
this.printOnNewline(`public init`);
this.parametersForProperties(properties);
this.withinBlock(() => {
properties.forEach(({ propertyName }) => {
this.printOnNewline(`self.${propertyName} = ${language_1.escapeIdentifierIfNeeded(propertyName)}`);
});
});
}
parametersForProperties(properties) {
this.print('(');
this.print(printing_1.join(properties.map(({ propertyName, typeName, isOptional }) => printing_1.join([`${language_1.escapeIdentifierIfNeeded(propertyName)}: ${typeName}`, isOptional && ' = nil'])), ', '));
this.print(')');
}
typeCaseInitialization(typeCase) {
if (typeCase.variants.length < 1) {
this.selectionSetInitialization(typeCase.default);
return;
}
this.print('[');
this.withIndent(() => {
this.printOnNewline(`GraphQLTypeCase(`);
this.withIndent(() => {
this.printOnNewline(`variants: [`);
this.print(typeCase.variants
.flatMap(variant => {
const structName = this.helpers.structNameForVariant(variant);
return variant.possibleTypes.map(type => `"${type}": ${structName}.selections`);
})
.join(', '));
this.print('],');
this.printOnNewline(`default: `);
this.selectionSetInitialization(typeCase.default);
});
this.printOnNewline(')');
});
this.printOnNewline(']');
}
selectionSetInitialization(selectionSet) {
this.print('[');
this.withIndent(() => {
for (const selection of selectionSet.selections) {
switch (selection.kind) {
case 'Field': {
const { name, alias, args, type } = selection;
const responseKey = selection.alias || selection.name;
const structName = this.helpers.structNameForPropertyName(responseKey);
this.printOnNewline(`GraphQLField(`);
this.print(printing_1.join([
`"${name}"`,
alias ? `alias: "${alias}"` : null,
args &&
args.length &&
`arguments: ${this.helpers.dictionaryLiteralForFieldArguments(args)}`,
`type: ${this.helpers.fieldTypeEnum(type, structName)}`
], ', '));
this.print('),');
break;
}
case 'BooleanCondition':
this.printOnNewline(`GraphQLBooleanCondition(`);
this.print(printing_1.join([
`variableName: "${selection.variableName}"`,
`inverted: ${selection.inverted}`,
'selections: '
], ', '));
this.selectionSetInitialization(selection.selectionSet);
this.print('),');
break;
case 'TypeCondition': {
this.printOnNewline(`GraphQLTypeCondition(`);
this.print(printing_1.join([
`possibleTypes: [${printing_1.join(selection.selectionSet.possibleTypes.map(type => `"${type.name}"`), ', ')}]`,
'selections: '
], ', '));
this.selectionSetInitialization(selection.selectionSet);
this.print('),');
break;
}
case 'FragmentSpread': {
const structName = this.helpers.structNameForFragmentName(selection.fragmentName);
this.printOnNewline(`GraphQLFragmentSpread(${structName}.self),`);
break;
}
}
}
});
this.printOnNewline(']');
}
typeDeclarationForGraphQLType(type) {
if (type instanceof graphql_1.GraphQLEnumType) {
this.enumerationDeclaration(type);
}
else if (type instanceof graphql_1.GraphQLInputObjectType) {
this.structDeclarationForInputObjectType(type);
}
}
enumerationDeclaration(type) {
const { name, description } = type;
const values = type.getValues();
this.printNewlineIfNeeded();
this.comment(description);
this.printOnNewline(`public enum ${name}: RawRepresentable, Equatable, Apollo.JSONDecodable, Apollo.JSONEncodable`);
this.withinBlock(() => {
this.printOnNewline('public typealias RawValue = String');
values.forEach(value => {
this.comment(value.description);
this.deprecationAttributes(value.isDeprecated, value.deprecationReason);
this.printOnNewline(`case ${language_1.escapeIdentifierIfNeeded(this.helpers.enumCaseName(value.name))}`);
});
this.comment('Auto generated constant for unknown enum values');
this.printOnNewline('case __unknown(RawValue)');
this.printNewlineIfNeeded();
this.printOnNewline('public init?(rawValue: RawValue)');
this.withinBlock(() => {
this.printOnNewline('switch rawValue');
this.withinBlock(() => {
values.forEach(value => {
this.printOnNewline(`case "${value.value}": self = ${language_1.escapeIdentifierIfNeeded(this.helpers.enumDotCaseName(value.name))}`);
});
this.printOnNewline(`default: self = .__unknown(rawValue)`);
});
});
this.printNewlineIfNeeded();
this.printOnNewline('public var rawValue: RawValue');
this.withinBlock(() => {
this.printOnNewline('switch self');
this.withinBlock(() => {
values.forEach(value => {
this.printOnNewline(`case ${language_1.escapeIdentifierIfNeeded(this.helpers.enumDotCaseName(value.name))}: return "${value.value}"`);
});
this.printOnNewline(`case .__unknown(let value): return value`);
});
});
this.printNewlineIfNeeded();
this.printOnNewline(`public static func == (lhs: ${name}, rhs: ${name}) -> Bool`);
this.withinBlock(() => {
this.printOnNewline('switch (lhs, rhs)');
this.withinBlock(() => {
values.forEach(value => {
const enumDotCaseName = language_1.escapeIdentifierIfNeeded(this.helpers.enumDotCaseName(value.name));
const tuple = `(${enumDotCaseName}, ${enumDotCaseName})`;
this.printOnNewline(`case ${tuple}: return true`);
});
this.printOnNewline(`case (.__unknown(let lhsValue), .__unknown(let rhsValue)): return lhsValue == rhsValue`);
this.printOnNewline(`default: return false`);
});
});
});
}
structDeclarationForInputObjectType(type) {
const { name: structName, description } = type;
const adoptedProtocols = ['GraphQLMapConvertible'];
const fields = Object.values(type.getFields());
const properties = fields.map(this.helpers.propertyFromInputField, this.helpers);
properties.forEach(property => {
if (property.isOptional) {
property.typeName = `Swift.Optional<${property.typeName}>`;
}
});
this.structDeclaration({ structName, description, adoptedProtocols }, () => {
this.printOnNewline(`public var graphQLMap: GraphQLMap`);
this.printNewlineIfNeeded();
this.printOnNewline(`public init`);
this.print('(');
this.print(printing_1.join(properties.map(({ propertyName, typeName, isOptional }) => printing_1.join([`${language_1.escapeIdentifierIfNeeded(propertyName)}: ${typeName}`, isOptional && ' = nil'])), ', '));
this.print(')');
this.withinBlock(() => {
this.printOnNewline(printing_1.wrap(`graphQLMap = [`, printing_1.join(properties.map(({ name, propertyName }) => `"${name}": ${language_1.escapeIdentifierIfNeeded(propertyName)}`), ', ') || ':', `]`));
});
for (const { name, propertyName, typeName, description } of properties) {
this.printNewlineIfNeeded();
this.comment(description);
this.printOnNewline(`public var ${language_1.escapeIdentifierIfNeeded(propertyName)}: ${typeName}`);
this.withinBlock(() => {
this.printOnNewline('get');
this.withinBlock(() => {
this.printOnNewline(`return graphQLMap["${name}"] as! ${typeName}`);
});
this.printOnNewline('set');
this.withinBlock(() => {
this.printOnNewline(`graphQLMap.updateValue(newValue, forKey: "${name}")`);
});
});
}
});
}
}
exports.SwiftAPIGenerator = SwiftAPIGenerator;
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