mirror of
https://github.com/kremalicious/metamask-extension.git
synced 2024-12-05 07:24:56 +01:00
ace7b0cda9
This reverts commit d91ce9c4b5
.
105 lines
2.8 KiB
JavaScript
105 lines
2.8 KiB
JavaScript
const Koa = require('koa');
|
|
const { isObject, mapValues } = require('lodash');
|
|
|
|
const CURRENT_STATE_KEY = '__CURRENT__';
|
|
const DEFAULT_STATE_KEY = '__DEFAULT__';
|
|
|
|
const FIXTURE_SERVER_HOST = 'localhost';
|
|
const FIXTURE_SERVER_PORT = 12345;
|
|
|
|
const fixtureSubstitutionPrefix = '__FIXTURE_SUBSTITUTION__';
|
|
const fixtureSubstitutionCommands = {
|
|
currentDateInMilliseconds: 'currentDateInMilliseconds',
|
|
};
|
|
|
|
/**
|
|
* Perform substitutions on a single piece of state.
|
|
*
|
|
* @param {unknown} partialState - The piece of state to perform substitutions on.
|
|
* @returns {unknown} The partial state with substititions performed.
|
|
*/
|
|
function performSubstitution(partialState) {
|
|
if (Array.isArray(partialState)) {
|
|
return partialState.map(performSubstitution);
|
|
} else if (isObject(partialState)) {
|
|
return mapValues(partialState, performSubstitution);
|
|
} else if (
|
|
typeof partialState === 'string' &&
|
|
partialState.startsWith(fixtureSubstitutionPrefix)
|
|
) {
|
|
const substitutionCommand = partialState.substring(
|
|
fixtureSubstitutionPrefix.length,
|
|
);
|
|
if (
|
|
substitutionCommand ===
|
|
fixtureSubstitutionCommands.currentDateInMilliseconds
|
|
) {
|
|
return new Date().getTime();
|
|
}
|
|
throw new Error(`Unknown substitution command: ${substitutionCommand}`);
|
|
}
|
|
return partialState;
|
|
}
|
|
|
|
/**
|
|
* Substitute values in the state fixture.
|
|
*
|
|
* @param {object} rawState - The state fixture.
|
|
* @returns {object} The state fixture with substitutions performed.
|
|
*/
|
|
function performStateSubstitutions(rawState) {
|
|
return mapValues(rawState, performSubstitution);
|
|
}
|
|
|
|
class FixtureServer {
|
|
constructor() {
|
|
this._app = new Koa();
|
|
this._stateMap = new Map([[DEFAULT_STATE_KEY, Object.create(null)]]);
|
|
|
|
this._app.use(async (ctx) => {
|
|
// Firefox is _super_ strict about needing CORS headers
|
|
ctx.set('Access-Control-Allow-Origin', '*');
|
|
if (this._isStateRequest(ctx)) {
|
|
ctx.body = this._stateMap.get(CURRENT_STATE_KEY);
|
|
}
|
|
});
|
|
}
|
|
|
|
async start() {
|
|
const options = {
|
|
host: FIXTURE_SERVER_HOST,
|
|
port: FIXTURE_SERVER_PORT,
|
|
exclusive: true,
|
|
};
|
|
|
|
return new Promise((resolve, reject) => {
|
|
this._server = this._app.listen(options);
|
|
this._server.once('error', reject);
|
|
this._server.once('listening', resolve);
|
|
});
|
|
}
|
|
|
|
async stop() {
|
|
if (!this._server) {
|
|
return;
|
|
}
|
|
|
|
await new Promise((resolve, reject) => {
|
|
this._server.close();
|
|
this._server.once('error', reject);
|
|
this._server.once('close', resolve);
|
|
});
|
|
}
|
|
|
|
loadJsonState(rawState) {
|
|
const state = performStateSubstitutions(rawState);
|
|
this._stateMap.set(CURRENT_STATE_KEY, state);
|
|
}
|
|
|
|
_isStateRequest(ctx) {
|
|
return ctx.method === 'GET' && ctx.path === '/state.json';
|
|
}
|
|
}
|
|
|
|
module.exports = FixtureServer;
|