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function load_libaries(client_id, api_key, discovery) { | |
let goog_ready = false; | |
let gapi_ready = false; | |
let pass; | |
let fail; | |
let ready = new Promise((res, rej) => { | |
pass = res; | |
fail = rej; | |
}); | |
function _all_ready() { | |
if (goog_ready && gapi_ready) { | |
pass(); | |
} | |
} | |
function _gapi_setup() { | |
gapi = window.gapi; | |
gapi.load('client', async() => { | |
await gapi.client.init({ | |
apiKey: api_key, | |
discoveryDocs: [ discovery ], | |
}); | |
gapi_ready = true; | |
_all_ready(); | |
}); | |
} | |
function _goog_ready() { | |
google = window.google; | |
google.accounts.id.initialize({ | |
client_id: client_id, | |
auto_select: true, | |
callback: on_response | |
}); | |
goog_ready = true; | |
_all_ready(); | |
} | |
// GIS Library, loads itself onto the window as 'google' | |
const googscr = document.createElement('script'); | |
googscr.type = 'text/javascript'; | |
googscr.src = 'https://accounts.google.com/gsi/client'; | |
googscr.defer = true; | |
googscr.onload = _goog_ready; | |
googscr.onerror = fail; | |
document.getElementsByTagName('head')[0].appendChild(googscr); | |
// GAPI Library, loads itself onto the window object as 'gapi' | |
const gapiscr = document.createElement('script'); | |
gapiscr.type = 'text/javascript'; | |
gapiscr.src = 'https://apis.google.com/js/api.js'; | |
gapiscr.defer = true; | |
gapiscr.onload = _gapi_setup; | |
gapiscr.onerror = fail; | |
document.getElementsByTagName('head')[0].appendChild(gapiscr); | |
return ready; | |
} |
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