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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| import { MeshPluginOptions, YamlConfig } from '@graphql-mesh/types'; | ||
| import { Plugin } from '@envelop/core'; | ||
| import faker from 'faker'; | ||
| import { mocks as graphqlScalarsMocks } from 'graphql-scalars'; | ||
| import { addMocksToSchema, createMockStore, IMocks } from '@graphql-tools/mock'; | ||
| import { loadFromModuleExportExpression } from '@graphql-mesh/utils'; | ||
| import { getInterpolatedStringFactory } from '@graphql-mesh/string-interpolation'; | ||
| import { GraphQLResolveInfo, GraphQLFieldResolver, GraphQLSchema, execute } from 'graphql'; | ||
|
|
||
| const mockedSchemas = new WeakSet<GraphQLSchema>(); | ||
|
|
||
| // eslint-disable-next-line @typescript-eslint/ban-types | ||
| export default function useMock(config: MeshPluginOptions<YamlConfig.MockingConfig>): Plugin<{}> { | ||
| const configIf = config != null && 'if' in config ? config.if : true; | ||
|
|
||
| if (configIf) { | ||
| return { | ||
| onSchemaChange({ schema, replaceSchema }) { | ||
| if (mockedSchemas.has(schema)) { | ||
| return; | ||
| } | ||
| const mocks: IMocks = { | ||
| ...graphqlScalarsMocks, | ||
| }; | ||
| const resolvers: any = {}; | ||
| const typeMap = schema.getTypeMap(); | ||
| for (const typeName in typeMap) { | ||
| const type = typeMap[typeName]; | ||
| const examples = type.extensions.examples as any[]; | ||
| if (examples?.length) { | ||
| mocks[typeName] = () => examples[Math.floor(Math.random() * examples.length)]; | ||
| } | ||
| } | ||
| if (config?.mocks?.length) { | ||
| for (const fieldConfig of config.mocks) { | ||
| const fieldConfigIf = 'if' in fieldConfig ? fieldConfig.if : true; | ||
| if (fieldConfigIf) { | ||
| const [typeName, fieldName] = fieldConfig.apply.split('.'); | ||
| if (fieldName) { | ||
| if (fieldConfig.faker) { | ||
| let fakerFn: Function; // eslint-disable-line | ||
| const [service, method] = fieldConfig.faker.split('.'); | ||
| if (service in faker) { | ||
| fakerFn = () => (faker as any)[service][method](); | ||
| } else { | ||
| fakerFn = () => faker.fake(fieldConfig.faker || ''); | ||
| } | ||
| resolvers[typeName] = resolvers[typeName] || {}; | ||
| resolvers[typeName][fieldName] = fakerFn; | ||
| } else if (fieldConfig.custom) { | ||
| const exportedVal$ = loadFromModuleExportExpression<any>(fieldConfig.custom, { | ||
| cwd: config.baseDir, | ||
| defaultExportName: 'default', | ||
| importFn: config.importFn, | ||
| }); | ||
| resolvers[typeName] = resolvers[typeName] || {}; | ||
| resolvers[typeName][fieldName] = (root: any, args: any, context: any, info: GraphQLResolveInfo) => { | ||
| context = context || {}; | ||
| context.mockStore = store; | ||
| return exportedVal$.then(exportedVal => | ||
| typeof exportedVal === 'function' ? exportedVal(root, args, context, info) : exportedVal | ||
| ); | ||
| }; | ||
| } else if ('length' in fieldConfig) { | ||
| resolvers[typeName] = resolvers[typeName] || {}; | ||
| resolvers[typeName][fieldName] = () => new Array(fieldConfig.length).fill({}); | ||
| } else if ('updateStore' in fieldConfig) { | ||
| const getFromStoreKeyFactory = getInterpolatedStringFactory(fieldConfig.store.key); | ||
| const updateStoreFactories = fieldConfig.updateStore.map(updateStoreConfig => ({ | ||
| updateStoreConfig, | ||
| keyFactory: getInterpolatedStringFactory(updateStoreConfig.key), | ||
| valueFactory: getInterpolatedStringFactory(updateStoreConfig.value), | ||
| })); | ||
| resolvers[typeName] = resolvers[typeName] || {}; | ||
| resolvers[typeName][fieldName] = (root: any, args: any, context: any, info: GraphQLResolveInfo) => { | ||
| const resolverData = { root, args, context, info, random: Date.now().toString(), env: process.env }; | ||
| updateStoreFactories.forEach(({ updateStoreConfig, keyFactory, valueFactory }) => { | ||
| const key = keyFactory(resolverData); | ||
| const value = valueFactory(resolverData); | ||
| store.set(updateStoreConfig.type, key, updateStoreConfig.fieldName, value); | ||
| }); | ||
| const key = getFromStoreKeyFactory(resolverData); | ||
| return store.get(fieldConfig.store.type, key, fieldConfig.store.fieldName); | ||
| }; | ||
| } else if ('store' in fieldConfig) { | ||
| const keyFactory = getInterpolatedStringFactory(fieldConfig.store.key); | ||
| resolvers[typeName] = resolvers[typeName] || {}; | ||
| resolvers[typeName][fieldName] = (root: any, args: any, context: any, info: GraphQLResolveInfo) => { | ||
| const key = keyFactory({ root, args, context, info, env: process.env }); | ||
| return store.get(fieldConfig.store.type, key, fieldConfig.store.fieldName); | ||
| }; | ||
| } | ||
| } else { | ||
| if (fieldConfig.faker) { | ||
| let fakerFn: GraphQLFieldResolver<any, any, { [argName: string]: any }>; | ||
| const [service, method] = fieldConfig.faker.split('.'); | ||
| if (service in faker) { | ||
| fakerFn = () => (faker as any)[service][method](); | ||
| } else { | ||
| fakerFn = () => faker.fake(fieldConfig.faker || ''); | ||
| } | ||
| mocks[typeName] = fakerFn; | ||
| } else if (fieldConfig.custom) { | ||
| const exportedVal$ = loadFromModuleExportExpression<any>(fieldConfig.custom, { | ||
| cwd: config.baseDir, | ||
| defaultExportName: 'default', | ||
| importFn: config.importFn, | ||
| }); | ||
| mocks[typeName] = () => { | ||
| return exportedVal$.then(exportedVal => | ||
| typeof exportedVal === 'function' ? exportedVal(store) : exportedVal | ||
| ); | ||
| }; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| const store = createMockStore({ schema, mocks }); | ||
| if (config?.initializeStore) { | ||
| const initializeStoreFn$ = loadFromModuleExportExpression(config.initializeStore, { | ||
| cwd: config.baseDir, | ||
| defaultExportName: 'default', | ||
| importFn: config.importFn, | ||
| }); | ||
| // eslint-disable-next-line no-void | ||
| void initializeStoreFn$.then(fn => fn(store)); | ||
| } | ||
| const mockedSchema = addMocksToSchema({ | ||
| schema, | ||
| store, | ||
| mocks, | ||
| resolvers, | ||
| preserveResolvers: config?.preserveResolvers, | ||
| }); | ||
| mockedSchemas.add(mockedSchema); | ||
| replaceSchema(mockedSchema); | ||
| }, | ||
| onExecute({ setExecuteFn }) { | ||
| setExecuteFn(execute); | ||
| }, | ||
| }; | ||
| } | ||
|
|
||
| return {}; | ||
| } |
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