2023-12-02 21:00:05 +09:00
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import { mkdir, writeFile } from 'fs/promises';
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2024-01-13 16:54:25 +09:00
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import { OpenAPIV3_1 } from 'openapi-types';
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2023-12-02 21:00:05 +09:00
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import { toPascal } from 'ts-case-convert';
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2024-01-13 16:54:25 +09:00
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import OpenAPIParser from '@readme/openapi-parser';
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2023-12-02 21:00:05 +09:00
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import openapiTS from 'openapi-typescript';
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async function generateBaseTypes(
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2024-01-13 16:54:25 +09:00
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openApiDocs: OpenAPIV3_1.Document,
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2023-12-02 21:00:05 +09:00
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openApiJsonPath: string,
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typeFileName: string,
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) {
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const disabledLints = [
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'@typescript-eslint/naming-convention',
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'@typescript-eslint/no-explicit-any',
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];
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const lines: string[] = [];
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for (const lint of disabledLints) {
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lines.push(`/* eslint ${lint}: 0 */`);
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}
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lines.push('');
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const generatedTypes = await openapiTS(openApiJsonPath, { exportType: true });
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lines.push(generatedTypes);
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lines.push('');
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await writeFile(typeFileName, lines.join('\n'));
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}
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async function generateSchemaEntities(
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2024-01-13 16:54:25 +09:00
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openApiDocs: OpenAPIV3_1.Document,
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2023-12-02 21:00:05 +09:00
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typeFileName: string,
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outputPath: string,
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) {
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if (!openApiDocs.components?.schemas) {
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return;
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}
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const schemas = openApiDocs.components.schemas;
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const schemaNames = Object.keys(schemas);
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const typeAliasLines: string[] = [];
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typeAliasLines.push(`import { components } from '${toImportPath(typeFileName)}';`);
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typeAliasLines.push(
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...schemaNames.map(it => `export type ${it} = components['schemas']['${it}'];`),
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);
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typeAliasLines.push('');
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await writeFile(outputPath, typeAliasLines.join('\n'));
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}
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async function generateEndpoints(
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2024-01-13 16:54:25 +09:00
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openApiDocs: OpenAPIV3_1.Document,
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2023-12-02 21:00:05 +09:00
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typeFileName: string,
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entitiesOutputPath: string,
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endpointOutputPath: string,
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) {
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const endpoints: Endpoint[] = [];
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// misskey-jsはPOST固定で送っているので、こちらも決め打ちする。別メソッドに対応することがあればこちらも直す必要あり
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2024-01-13 16:54:25 +09:00
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const paths = openApiDocs.paths ?? {};
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2023-12-02 21:00:05 +09:00
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const postPathItems = Object.keys(paths)
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.map(it => paths[it]?.post)
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.filter(filterUndefined);
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for (const operation of postPathItems) {
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// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
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const operationId = operation.operationId!;
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const endpoint = new Endpoint(operationId);
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endpoints.push(endpoint);
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if (isRequestBodyObject(operation.requestBody)) {
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const reqContent = operation.requestBody.content;
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const supportMediaTypes = Object.keys(reqContent);
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if (supportMediaTypes.length > 0) {
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// いまのところ複数のメディアタイプをとるエンドポイントは無いので決め打ちする
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endpoint.request = new OperationTypeAlias(
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operationId,
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supportMediaTypes[0],
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OperationsAliasType.REQUEST,
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);
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}
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}
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if (isResponseObject(operation.responses['200']) && operation.responses['200'].content) {
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const resContent = operation.responses['200'].content;
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const supportMediaTypes = Object.keys(resContent);
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if (supportMediaTypes.length > 0) {
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// いまのところ複数のメディアタイプを返すエンドポイントは無いので決め打ちする
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endpoint.response = new OperationTypeAlias(
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operationId,
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supportMediaTypes[0],
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OperationsAliasType.RESPONSE,
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);
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}
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}
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}
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const entitiesOutputLine: string[] = [];
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entitiesOutputLine.push(`import { operations } from '${toImportPath(typeFileName)}';`);
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entitiesOutputLine.push('');
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entitiesOutputLine.push(new EmptyTypeAlias(OperationsAliasType.REQUEST).toLine());
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entitiesOutputLine.push(new EmptyTypeAlias(OperationsAliasType.RESPONSE).toLine());
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entitiesOutputLine.push('');
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const entities = endpoints
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.flatMap(it => [it.request, it.response].filter(i => i))
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.filter(filterUndefined);
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entitiesOutputLine.push(...entities.map(it => it.toLine()));
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entitiesOutputLine.push('');
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await writeFile(entitiesOutputPath, entitiesOutputLine.join('\n'));
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const endpointOutputLine: string[] = [];
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endpointOutputLine.push('import type {');
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endpointOutputLine.push(
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...[emptyRequest, emptyResponse, ...entities].map(it => '\t' + it.generateName() + ','),
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);
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endpointOutputLine.push(`} from '${toImportPath(entitiesOutputPath)}';`);
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endpointOutputLine.push('');
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endpointOutputLine.push('export type Endpoints = {');
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endpointOutputLine.push(
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...endpoints.map(it => '\t' + it.toLine()),
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);
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endpointOutputLine.push('}');
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endpointOutputLine.push('');
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await writeFile(endpointOutputPath, endpointOutputLine.join('\n'));
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}
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2023-12-08 15:15:17 +09:00
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async function generateApiClientJSDoc(
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openApiDocs: OpenAPIV3_1.Document,
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2023-12-08 15:15:17 +09:00
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apiClientFileName: string,
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endpointsFileName: string,
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warningsOutputPath: string,
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) {
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const endpoints: { operationId: string; description: string; }[] = [];
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// misskey-jsはPOST固定で送っているので、こちらも決め打ちする。別メソッドに対応することがあればこちらも直す必要あり
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2024-01-13 16:54:25 +09:00
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const paths = openApiDocs.paths ?? {};
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2023-12-08 15:15:17 +09:00
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const postPathItems = Object.keys(paths)
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.map(it => paths[it]?.post)
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.filter(filterUndefined);
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for (const operation of postPathItems) {
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// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
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const operationId = operation.operationId!;
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if (operation.description) {
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endpoints.push({
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operationId: operationId,
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description: operation.description,
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});
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}
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}
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const endpointOutputLine: string[] = [];
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endpointOutputLine.push(`import type { SwitchCaseResponseType } from '${toImportPath(apiClientFileName)}';`);
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endpointOutputLine.push(`import type { Endpoints } from '${toImportPath(endpointsFileName)}';`);
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endpointOutputLine.push('');
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endpointOutputLine.push(`declare module '${toImportPath(apiClientFileName)}' {`);
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endpointOutputLine.push(' export interface APIClient {');
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for (let i = 0; i < endpoints.length; i++) {
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const endpoint = endpoints[i];
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endpointOutputLine.push(
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' /**',
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` * ${endpoint.description.split('\n').join('\n * ')}`,
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' */',
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` request<E extends '${endpoint.operationId}', P extends Endpoints[E][\'req\']>(`,
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' endpoint: E,',
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' params: P,',
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' credential?: string | null,',
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' ): Promise<SwitchCaseResponseType<E, P>>;',
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);
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if (i < endpoints.length - 1) {
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endpointOutputLine.push('\n');
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}
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}
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endpointOutputLine.push(' }');
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endpointOutputLine.push('}');
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endpointOutputLine.push('');
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await writeFile(warningsOutputPath, endpointOutputLine.join('\n'));
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}
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2024-01-13 16:54:25 +09:00
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function isRequestBodyObject(value: unknown): value is OpenAPIV3_1.RequestBodyObject {
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2023-12-02 21:00:05 +09:00
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if (!value) {
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return false;
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}
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2024-01-13 16:54:25 +09:00
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const { content } = value as Record<keyof OpenAPIV3_1.RequestBodyObject, unknown>;
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return content !== undefined;
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}
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2024-01-13 16:54:25 +09:00
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function isResponseObject(value: unknown): value is OpenAPIV3_1.ResponseObject {
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if (!value) {
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return false;
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}
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2024-01-13 16:54:25 +09:00
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const { description } = value as Record<keyof OpenAPIV3_1.ResponseObject, unknown>;
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2023-12-02 21:00:05 +09:00
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return description !== undefined;
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}
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function filterUndefined<T>(item: T): item is Exclude<T, undefined> {
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return item !== undefined;
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}
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function toImportPath(fileName: string, fromPath = '/built/autogen', toPath = ''): string {
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return fileName.replace(fromPath, toPath).replace('.ts', '.js');
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}
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enum OperationsAliasType {
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REQUEST = 'Request',
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RESPONSE = 'Response'
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}
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interface IOperationTypeAlias {
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readonly type: OperationsAliasType
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generateName(): string
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toLine(): string
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}
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class OperationTypeAlias implements IOperationTypeAlias {
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public readonly operationId: string;
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public readonly mediaType: string;
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public readonly type: OperationsAliasType;
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constructor(
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operationId: string,
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mediaType: string,
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type: OperationsAliasType,
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) {
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this.operationId = operationId;
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this.mediaType = mediaType;
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this.type = type;
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}
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generateName(): string {
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const nameBase = this.operationId.replace(/\//g, '-');
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return toPascal(nameBase + this.type);
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}
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toLine(): string {
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const name = this.generateName();
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return (this.type === OperationsAliasType.REQUEST)
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? `export type ${name} = operations['${this.operationId}']['requestBody']['content']['${this.mediaType}'];`
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: `export type ${name} = operations['${this.operationId}']['responses']['200']['content']['${this.mediaType}'];`;
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}
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}
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class EmptyTypeAlias implements IOperationTypeAlias {
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readonly type: OperationsAliasType;
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constructor(type: OperationsAliasType) {
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this.type = type;
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}
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generateName(): string {
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return 'Empty' + this.type;
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}
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toLine(): string {
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const name = this.generateName();
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return `export type ${name} = Record<string, unknown> | undefined;`;
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}
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}
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const emptyRequest = new EmptyTypeAlias(OperationsAliasType.REQUEST);
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const emptyResponse = new EmptyTypeAlias(OperationsAliasType.RESPONSE);
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class Endpoint {
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public readonly operationId: string;
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public request?: IOperationTypeAlias;
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public response?: IOperationTypeAlias;
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constructor(operationId: string) {
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this.operationId = operationId;
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}
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toLine(): string {
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const reqName = this.request?.generateName() ?? emptyRequest.generateName();
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const resName = this.response?.generateName() ?? emptyResponse.generateName();
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return `'${this.operationId}': { req: ${reqName}; res: ${resName} };`;
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}
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}
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async function main() {
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const generatePath = './built/autogen';
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await mkdir(generatePath, { recursive: true });
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const openApiJsonPath = './api.json';
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2024-01-13 16:54:25 +09:00
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const openApiDocs = await OpenAPIParser.parse(openApiJsonPath) as OpenAPIV3_1.Document;
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2023-12-02 21:00:05 +09:00
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const typeFileName = './built/autogen/types.ts';
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await generateBaseTypes(openApiDocs, openApiJsonPath, typeFileName);
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const modelFileName = `${generatePath}/models.ts`;
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await generateSchemaEntities(openApiDocs, typeFileName, modelFileName);
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const entitiesFileName = `${generatePath}/entities.ts`;
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const endpointFileName = `${generatePath}/endpoint.ts`;
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await generateEndpoints(openApiDocs, typeFileName, entitiesFileName, endpointFileName);
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2023-12-08 15:15:17 +09:00
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const apiClientWarningFileName = `${generatePath}/apiClientJSDoc.ts`;
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await generateApiClientJSDoc(openApiDocs, '../api.ts', endpointFileName, apiClientWarningFileName);
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2023-12-02 21:00:05 +09:00
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}
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main();
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