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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/>.
const waiting = new Map();
const ext = '@vnuge/nvault-extension'
const debugLog = (...args) => {
console.log(`[${ext}]`, ...args)
}
const sendMessage = (type, payload) => new Promise((resolve, reject) => {
const id = Math.random().toString(36);
waiting.set(id, { resolve, reject });
window.postMessage({ type, payload, id, ext }, '*');
});
/**
* Listen for messages from the content script
*/
window.addEventListener('message', ({ data }) => {
//Confirm the message format is correct
if (!data || !data.response || data.ext !== ext || !waiting.get(data.id)){
return;
}
debugLog(data)
//Explode now valid
const { response, id } = data;
const { resolve, reject } = waiting.get(id);
if (response.error) {
//Construct an error object from the resopnse message
const errorMessage = response.error.message ?? response.error;
let error = new Error(`${ext}: ${errorMessage}`);
error.stack = response.error.stack;
//Reject the promise as error
reject(error);
} else {
//Resolve the promise as success
resolve(response);
}
//Remove the waiter from the list
waiting.delete(id)
});
//Expose the Nostr API to the window object
window.nostr = {
//Redirect calls to the background script
async getPublicKey(){
const { PublicKey } = await sendMessage('getPublicKey', {})
return PublicKey
} ,
async signEvent(event){
const { event:ev } = await sendMessage('signEvent', { event })
debugLog("Signed event", ev);
return ev
},
async getRelays(){
const { relays } = await sendMessage('getRelays', {})
return relays
},
nip04: {
encrypt: (peer, plaintext) => sendMessage('nip04.encrypt', { peer, plaintext }),
decrypt: (peer, ciphertext) => sendMessage('nip04.decrypt', { peer, ciphertext }),
},
};
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