58 lines
2.0 KiB
JavaScript
58 lines
2.0 KiB
JavaScript
// Copyright 2017-2023 @polkadot/typegen authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import fs from 'node:fs';
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import { fetch } from '@polkadot/x-fetch';
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const PREAMBLE = '// Copyright 2017-2023 @polkadot/types-support authors & contributors\n// SPDX-License-Identifier: Apache-2.0\n\n/* eslint-disable */\n\n';
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const CMD = {
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kusama: `${PREAMBLE}// cargo run --release -- purge-chain -y --chain kusama-dev && cargo run --release -- --chain kusama-dev --alice --force-authoring\n\nexport default`,
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polkadot: `${PREAMBLE}// cargo run --release -- purge-chain -y --dev && cargo run --release -- --dev\n\nexport default`,
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substrate: `${PREAMBLE}// cargo run --release -- purge-chain -y --dev && cargo run --release -- --dev\n\nexport default`
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};
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let requestId = 0;
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/**
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*
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* @param {'rpc_methods' | 'state_getMetadata' | 'state_getRuntimeVersion'} method
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* @returns {Promise<any>}
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*/
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async function get (method) {
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const res = await fetch('http://127.0.0.1:9944', {
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body: JSON.stringify({
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id: ++requestId,
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jsonrpc: '2.0',
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method,
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params: []
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}),
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headers: {
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Accept: 'application/json',
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'Content-Type': 'application/json'
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},
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method: 'post'
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});
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const body = await res.json();
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return body.result;
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}
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/** @type {[string[], string, { specName: 'polkadot' | 'kusama' | 'node'; specVersion: string; }]} */
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const [methods, metadata, version] = await Promise.all([
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get('rpc_methods'),
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get('state_getMetadata'),
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get('state_getRuntimeVersion')
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]);
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const chain = version.specName === 'node'
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? 'substrate'
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: version.specName;
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const metaVer = parseInt(metadata.substring(10, 12), 16);
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const path = `packages/types-support/src/metadata/v${metaVer}/${chain}`;
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fs.writeFileSync(`${path}-hex.ts`, `${CMD[chain]} '${metadata}';\n`);
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fs.writeFileSync(`${path}-rpc.ts`, `${CMD[chain]} ${JSON.stringify(methods, null, 2)};\n`);
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fs.writeFileSync(`${path}-ver.ts`, `${CMD[chain]} ${JSON.stringify(version, null, 2)};\n`);
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console.log(`Retrieved ${chain}/${version.specVersion}, metadata v${metaVer}`);
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