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// Copyright (C) 2023 Vaughn Nugent
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
import { runtime } from "webextension-polyfill";
import { isEqual, isNil, isEmpty } from 'lodash'
import { sendMessage } from 'webext-bridge/content-script'
import { apiCall } from '@vnuge/vnlib.browser'
import { useManagment } from './../../bg-api/content-script'
const { getSiteConfig } = useManagment()
const nip07Enabled = () => getSiteConfig().then(p => p.autoInject);
//Setup listener for the content script to process nostr messages
const ext = '@vnuge/nvault-extension'
let _promptHandler = () => {}
export const usePrompt = (callback) => {
//Register the callback
_promptHandler = async (event) => {
return new Promise((resolve, reject) => {
callback(event).then(resolve).catch(reject)
})
}
return {}
}
//Only inject the script if the site has autoInject enabled
nip07Enabled().then(enabled => {
console.log('Nip07 enabled:', enabled)
if (enabled) {
// inject the script that will provide window.nostr
let script = document.createElement('script');
script.setAttribute('async', 'false');
script.setAttribute('type', 'text/javascript');
script.setAttribute('src', runtime.getURL('src/entries/nostr-provider.js'));
document.head.appendChild(script);
//Only listen for messages if injection is enabled
window.addEventListener('message', async ({ source, data, origin }) => {
//Confirm the message format is correct
if (!isEqual(source, window) || isEmpty(data) || isNil(data.type)) {
return
}
//Confirm extension is for us
if (!isEqual(data.ext, ext)) {
return
}
// pass on to background
var response;
await apiCall(async () => {
switch (data.type) {
case 'getPublicKey':
case 'signEvent':
//Check the public key against selected key
case 'getRelays':
case 'nip04.encrypt':
case 'nip04.decrypt':
//await propmt for user to allow the request
const allow = await _promptHandler({ ...data, origin })
//send request to background
response = allow ? await sendMessage(data.type, { ...data.payload, origin }) : { error: 'User denied permission' }
break;
default:
throw new Error('Unknown nostr message type')
}
})
// return response message, must have the same id as the request
window.postMessage({ ext, id: data.id, response }, origin);
});
}
})
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