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background.js
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background.js
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// Authenticate Are.na user and get OAuth2 access token
async function authenticate() {
const ARENA = await fetch(chrome.runtime.getURL("config.json"))
.then((response) => response.json())
.then((config) => {
const ARENA_CLIENT_ID = config.ARENA_CLIENT_ID;
const ARENA_SECRET = config.ARENA_SECRET;
return {
clientID: ARENA_CLIENT_ID,
secret: ARENA_SECRET,
};
});
let CALLBACK_URL = chrome.identity.getRedirectURL();
let AUTH_URL = `http://dev.are.na/oauth/authorize?client_id=${ARENA.clientID}&redirect_uri=${CALLBACK_URL}&response_type=code`;
// Opens a window to initiate Are.na OAuth
chrome.identity.launchWebAuthFlow(
{
url: AUTH_URL,
interactive: true,
},
async function (redirectURL) {
const [_, code] = redirectURL.split("=");
const access_token_url = `https://dev.are.na/oauth/token?client_id=${ARENA.clientID}&client_secret=${ARENA.secret}&code=${code}&grant_type=authorization_code&redirect_uri=${CALLBACK_URL}`;
try {
await fetch(access_token_url, {
method: "POST",
headers: {
Accept: "application/json",
"Content-Type": "application/json",
},
})
.then((response) => response.json())
.then((data) => {
const access_token = data.access_token;
console.log(access_token);
chrome.storage.sync.set({ authToken: access_token }, function () {
console.log("Access token successfully saved to storage.");
});
});
} catch (err) {
console.log(err);
}
}
);
}
// Handle the extension icon click event
chrome.action.onClicked.addListener(async (tab) => {
// Check if access token already exists
chrome.storage.sync.get(["authToken"], async function (items) {
const authToken = items.authToken;
if (authToken == null) {
authenticate();
} else {
// Check if iframe exists
await chrome.scripting
.executeScript({
target: { tabId: tab.id },
function: iframeExists,
})
.then(async (response) => {
// If iframe exists, toggle between hiding / showing
if (response[0].result) {
await chrome.scripting.executeScript({
target: { tabId: tab.id },
function: toggleiframe,
});
} else {
// Create iframe and inject into page
await chrome.scripting.executeScript({
target: { tabId: tab.id },
function: injectiframe,
});
}
});
}
});
});
async function iframeExists() {
const iframe = document.getElementById("pidgin-iframe");
return iframe !== null ? true : false;
}
async function injectiframe() {
let iframe = document.createElement("iframe");
iframe.id = "pidgin-iframe";
iframe.style.display = "block";
iframe.src = await chrome.runtime.getURL("frame.html");
document.body.appendChild(iframe);
}
async function toggleiframe() {
const display = document.getElementById("pidgin-iframe").style.display;
document.getElementById("pidgin-iframe").style.display = display == "block" ? "none" : "block";
}