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import {execa} from 'execa';
// Windows doesn't have browser IDs in the same way macOS/Linux does so we give fake
// ones that look real and match the macOS/Linux versions for cross-platform apps.
const windowsBrowserProgIds = {
AppXq0fevzme2pys62n3e0fbqa7peapykr8v: {name: 'Edge', id: 'com.microsoft.edge.old'},
MSEdgeDHTML: {name: 'Edge', id: 'com.microsoft.edge'}, // On macOS, it's "com.microsoft.edgemac"
MSEdgeHTM: {name: 'Edge', id: 'com.microsoft.edge'}, // Newer Edge/Win10 releases
'IE.HTTP': {name: 'Internet Explorer', id: 'com.microsoft.ie'},
FirefoxURL: {name: 'Firefox', id: 'org.mozilla.firefox'},
ChromeHTML: {name: 'Chrome', id: 'com.google.chrome'},
};
export class UnknownBrowserError extends Error {}
export default async function defaultBrowser(_execa = execa) {
const result = await _execa('reg', [
'QUERY',
' HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\Shell\\Associations\\UrlAssociations\\http\\UserChoice',
'/v',
'ProgId',
]);
const match = /ProgId\s*REG_SZ\s*(?<id>\S+)/.exec(result.stdout);
if (!match) {
throw new UnknownBrowserError(`Cannot find Windows browser in stdout: ${JSON.stringify(result.stdout)}`);
}
const {id} = match.groups;
const browser = windowsBrowserProgIds[id];
if (!browser) {
throw new UnknownBrowserError(`Unknown browser ID: ${id}`);
}
return browser;
}