SimpleX-Chat/call/ui.js

;(async function run() {
  // const START_E2EE_CALL_BTN = "start-e2ee-call"
  // const START_CALL_BTN = "start-call"
  const URL_FOR_PEER = "url-for-peer"
  // const COPY_URL_FOR_PEER_BTN = "copy-url-for-peer"
  const DATA_FOR_PEER = "data-for-peer"
  // const COPY_DATA_FOR_PEER_BTN = "copy-data-for-peer"
  const PASS_DATA_TO_PEER_TEXT = "pass-data-to-peer"
  const SIMPLEX_CHAT_COMMAND = "simplex-chat-command"
  const COPY_SIMPLEX_CHAT_COMMAND_BTN = "copy-simplex-chat-command"
  const COMMAND_TO_PROCESS = "command-to-process"
  const PROCESS_COMMAND_BTN = "process-command"
  const urlForPeer = document.getElementById(URL_FOR_PEER)
  const dataForPeer = document.getElementById(DATA_FOR_PEER)
  const passDataToPeerText = document.getElementById(PASS_DATA_TO_PEER_TEXT)
  const simplexChatCommand = document.getElementById(SIMPLEX_CHAT_COMMAND)
  const commandToProcess = document.getElementById(COMMAND_TO_PROCESS)
  const processCommandButton = document.getElementById(PROCESS_COMMAND_BTN)
  // const startE2EECallButton = document.getElementById(START_E2EE_CALL_BTN)
  // const {resp} = await processCommand({command: {type: "capabilities", useWorker: true}})
  // if (resp?.capabilities?.encryption) {
  //   startE2EECallButton.onclick = startCall(true)
  // } else {
  //   startE2EECallButton.style.display = "none"
  // }
  // const startCallButton = document.getElementById(START_CALL_BTN)
  // startCallButton.onclick = startCall()
  // const copyUrlButton = document.getElementById(COPY_URL_FOR_PEER_BTN)
  // copyUrlButton.onclick = () => {
  //   navigator.clipboard.writeText(urlForPeer.innerText)
  //   commandToProcess.style.display = ""
  //   processCommandButton.style.display = ""
  // }
  // const copyDataButton = document.getElementById(COPY_DATA_FOR_PEER_BTN)
  // copyDataButton.onclick = () => {
  //   navigator.clipboard.writeText(dataForPeer.innerText)
  //   commandToProcess.style.display = ""
  //   processCommandButton.style.display = ""
  // }
  const copySimplexChatCommandButton = document.getElementById(COPY_SIMPLEX_CHAT_COMMAND_BTN)
  copySimplexChatCommandButton.onclick = () => {
    navigator.clipboard.writeText(simplexChatCommand.innerText)
    if (simplexChatCommand.innerText.startsWith("/_call offer")) {
      commandToProcess.style.display = ""
      processCommandButton.style.display = ""
    }
  }
  processCommandButton.onclick = () => {
    sendCommand(JSON.parse(commandToProcess.value))
    commandToProcess.value = ""
  }
  const parsed = new URLSearchParams(document.location.hash.substring(1))
  let commandStr = parsed.get("command")
  if (commandStr) {
    // startE2EECallButton.style.display = "none"
    // startCallButton.style.display = "none"
    await sendCommand(JSON.parse(decodeURIComponent(commandStr)))
  }

  // function startCall(encryption) {
  //   return async () => {
  //     let aesKey
  //     if (encryption) {
  //       const key = await crypto.subtle.generateKey({name: "AES-GCM", length: 256}, true, ["encrypt", "decrypt"])
  //       const keyBytes = await crypto.subtle.exportKey("raw", key)
  //       aesKey = callCrypto.decodeAscii(callCrypto.encodeBase64url(new Uint8Array(keyBytes)))
  //     }
  //     startE2EECallButton.style.display = "none"
  //     startCallButton.style.display = "none"
  //     await sendCommand({type: "start", media: "video", aesKey, useWorker: true})
  //   }
  // }

  async function sendCommand(command) {
    try {
      console.log(command)
      const {resp} = await processCommand({command})
      console.log(resp)
      switch (resp.type) {
        case "offer": {
          const {media} = command
          const {offer, iceCandidates, capabilities} = resp
          const aesKey = capabilities.encryption ? command.aesKey : undefined
          const peerWCommand = {type: "offer", offer, iceCandidates, media, aesKey, useWorker: true}
          const url = new URL(document.location)
          parsed.set("command", encodeURIComponent(JSON.stringify(peerWCommand)))
          url.hash = parsed.toString()
          urlForPeer.innerText = url.toString()
          dataForPeer.innerText = JSON.stringify(peerWCommand)

          const webRTCCallOffer = {callType: {media, capabilities}, rtcSession: {rtcSession: offer, rtcIceCandidates: iceCandidates}}
          const peerChatCommand = `/_call offer @${parsed.get("contact_id")} ${JSON.stringify(webRTCCallOffer)}`
          simplexChatCommand.innerText = peerChatCommand

          // copyUrlButton.style.display = ""
          // copyDataButton.style.display = ""
          copySimplexChatCommandButton.style.display = ""
          return
        }
        case "answer": {
          const {answer, iceCandidates} = resp
          const peerWCommand = {type: "answer", answer, iceCandidates}
          dataForPeer.innerText = JSON.stringify(peerWCommand)

          const webRTCSession = {rtcSession: answer, rtcIceCandidates: iceCandidates}
          const peerChatCommand = `/_call answer @${parsed.get("contact_id")} ${JSON.stringify(webRTCSession)}`
          // copyUrlButton.style.display = "none"
          // copyDataButton.style.display = ""
          copySimplexChatCommandButton.style.display = ""
          simplexChatCommand.innerText = peerChatCommand
          return
        }
        case "ok":
          if ((command.type = "answer")) {
            console.log("connecting")
            commandToProcess.style.display = "none"
            processCommandButton.style.display = "none"
          }
          return
      }
    } catch (e) {
      console.log("error: ", e)
    }
  }
})()