Files
openstapps/packages/core-tools/src/schema.ts

114 lines
3.6 KiB
TypeScript

/*
* Copyright (C) 2018, 2019 StApps
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <https://www.gnu.org/licenses/>.
*/
import Ajv from 'ajv';
import {JSONSchema7 as JSONSchema} from 'json-schema';
import {Config, DEFAULT_CONFIG, Definition, SchemaGenerator} from 'ts-json-schema-generator';
import {createFormatter} from 'ts-json-schema-generator';
import {createParser} from 'ts-json-schema-generator';
import {createProgram} from 'ts-json-schema-generator';
import {getTsconfigPath} from './common.js';
import {definitionsOf, lightweightProjectFromPath} from '@openstapps/easy-ast';
import {isSchemaWithDefinitions} from './util/guards.js';
import path from 'path';
import re2 from 're2';
/**
* StAppsCore converter
*
* Converts TypeScript source files to JSON schema files
*/
export class Converter {
/**
* Generator instance
*/
private readonly generator: SchemaGenerator;
/**
* Schema validator instance
*/
private readonly schemaValidator: Ajv.default;
/**
* Create a new converter
* @param projectPath Path to the project
* @param sourcePath Path to optionally point to a different directory of / or single source file
*/
constructor(projectPath: string, sourcePath?: string) {
// set config for schema generator
const config: Config = {
...DEFAULT_CONFIG,
path: sourcePath,
sortProps: true,
topRef: false,
skipTypeCheck: true,
tsconfig: path.join(getTsconfigPath(projectPath), 'tsconfig.json'),
type: 'SC',
};
// create TypeScript program from config
const program = createProgram(config);
// create generator
this.generator = new SchemaGenerator(program, createParser(program, config), createFormatter(config));
// create Ajv instance
this.schemaValidator = new Ajv.default({code: {regExp: re2 as never}});
}
/**
* Get schema for specific StAppsCore type
* @param type Type to get the schema for
* @param version Version to set for the schema
* @returns Generated schema
*/
getSchema(type: string, version: string): JSONSchema {
// generate schema for this file/type
const schema: JSONSchema = this.generator.createSchema(type);
// set id of schema
schema.$id = `https://core.stapps.tu-berlin.de/v${version}/lib/schema/${type}.json`;
if (isSchemaWithDefinitions(schema)) {
const selfReference = {
...schema,
};
delete selfReference.$schema;
delete selfReference.definitions;
delete selfReference.$id;
// add self reference to definitions
schema.definitions![`SC${type}`] = {
...(selfReference as unknown as Definition),
};
}
if (!this.schemaValidator.validateSchema(schema)) {
throw new Error(`Generated schema for ${type} is invalid!`);
}
return schema;
}
}
/**
* Get a list of validatable types from an API extractor file
*/
export function getValidatableTypesInPath(path: string): string[] {
return Object.values(definitionsOf(lightweightProjectFromPath(path)))
.filter(type => !!type.comment?.tags?.find(it => it.name === 'validatable'))
.map(type => type.name);
}