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experiment: demo electron integration #999

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experiment: demo electron integration #999

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8 changes: 8 additions & 0 deletions client/cmd/electron-demo/.gitignore
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package-lock.json
site/
node_modules/
*.h
*.so
*.dll
build/
bin/
31 changes: 31 additions & 0 deletions client/cmd/electron-demo/Makefile
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default: build

compile-go:
go build -buildmode=c-shared -o ./libdexc/libdexc.so ./libdexc/...

npm-install:
npm install

cleanup:
rm -r build 2> /dev/null || true
rm -r site 2> /dev/null || true
rm -r /tmp/dexc 2> /dev/null || true
mkdir -p site

move-site:
cp -r ../../webserver/site/src/ ./site/
cp -r ../../webserver/site/dist/ ./site/

build-c:
./node_modules/.bin/node-gyp configure
./node_modules/.bin/node-gyp build
./node_modules/.bin/electron-rebuild

build: compile-go npm-install cleanup move-site build-c


run:
./node_modules/.bin/electron main.js

run-simnet: build
./node_modules/.bin/electron main.js --simnet
9 changes: 9 additions & 0 deletions client/cmd/electron-demo/binding.gyp
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{
"targets": [
{
"target_name": "dexc",
"sources": [ "cnode/cnode.cc" ],
"libraries": ["<!(pwd)/libdexc/libdexc.so"],
}
]
}
33 changes: 33 additions & 0 deletions client/cmd/electron-demo/cnode/cnode.cc
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// hello.cc
#include <node.h>
#include "../libdexc/libdexc.h"

namespace cnode {

using v8::FunctionCallbackInfo;
using v8::Isolate;
using v8::Local;
using v8::Object;
using v8::String;
using v8::Value;

const char* ToCString(const String::Utf8Value& value) {
return *value ? *value : "<string conversion failed>";
}

void Method(const FunctionCallbackInfo<Value>& args) {
Isolate* isolate = args.GetIsolate();
String::Utf8Value str(isolate, args[0]);
const char* cstr = ToCString(str);
char * charstr = const_cast<char *>(cstr);
char* result = Call(charstr);
args.GetReturnValue().Set(String::NewFromUtf8(isolate, result).ToLocalChecked());
}

void Initialize(Local<Object> exports) {
NODE_SET_METHOD(exports, "call", Method);
}

NODE_MODULE(NODE_GYP_MODULE_NAME, Initialize)

} // namespace cnode
12 changes: 12 additions & 0 deletions client/cmd/electron-demo/index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Decred DEX Electron Integration Example</title>
<meta http-equiv="Content-Security-Policy" content="script-src 'self' 'unsafe-inline';" />
</head>
<body>
<div id="main"></div>
<script src="index.js"></script>
</body>
</html>
162 changes: 162 additions & 0 deletions client/cmd/electron-demo/index.js
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const { ipcRenderer } = require('electron')
const path = require('path')

Mainnet = 0
Testnet = 1
Simnet = 2

NetName = {
[Mainnet]: Mainnet,
[Testnet]: Testnet,
[Simnet]: Simnet
}

LogLevelTrace = 0
LogLevelDebug = 1
LogLevelInfo = 2
LogLevelWarn = 3
LogLevelError = 4
LogLevelCritical = 5
LogLevelOff = 6

DCR_ID = 42
BTC_ID = 0

function appGetPath (name) {
return fetchIPC('getPath', name)
}

function fetchIPC (func, ...args) {
let res = ipcRenderer.sendSync(func, ...args)
res = res ? JSON.parse(res) : null
if (res && res.error) throw Error(String(res.error))
return res
}

class DEX {
static startCore () {
const dbPath = path.join(appGetPath('temp'), (new Date().getTime()).toString(), 'dexc', 'db.db')
return fetchIPC('callDEX', 'startCore', {
dbPath: dbPath,
net: Simnet,
logLevel: LogLevelDebug,
})
}

static isInitialized () {
const res = fetchIPC('callDEX', 'IsInitialized', '')
console.log("isInitialized res", res, typeof res)
return res
}

static init (pw) {
return fetchIPC('callDEX', 'Init', { pass: pw })
}

static startServer (addr) {
return fetchIPC('callDEX', 'startServer', addr)
}

static createWallet (assetID, config, pass, appPass) {
return fetchIPC('callDEX', 'CreateWallet', {
assetID: assetID,
config: config,
pass: pass,
appPass: appPass,
})
}

static register (addr, appPass, fee, cert) {
return fetchIPC('callDEX', 'Register', {
url: addr,
appPass: appPass,
fee: fee,
cert: cert,
})
}

static user () {
return fetchIPC('callDEX', 'User', '')
}
}

/* sleep can be used by async functions to pause for a specified period. */
function sleep (ms) {
return new Promise(resolve => setTimeout(resolve, ms))
}

const mainDiv = document.getElementById('main')

async function writeMain (s) {
const div = document.createElement('div')
div.textContent = s
mainDiv.appendChild(div)
}

function stringToUTF8Hex (s) {
return s.split("").map(c => c.charCodeAt(0).toString(16).padStart(2, "0")).join("")
}

async function prepSimnet () {

const pw = "abc"
if (!DEX.isInitialized()) {
await writeMain('Initializing DEX')
await writeMain(`result: ${DEX.init(pw)}`)
}

const homeDir = appGetPath('home')
const dextestDir = path.join(homeDir, 'dextest')

const user = DEX.user()
if (!user.assets[DCR_ID].wallet) {
const walletCertPath = path.join(dextestDir, 'dcr', 'alpha', 'rpc.cert')
await writeMain('Loading simnet Decred wallet')
DEX.createWallet(DCR_ID, {
account: 'default',
username: 'user',
password: 'pass',
rpccert: walletCertPath,
rpclisten: '127.0.0.1:19567'
}, pw, pw)

await writeMain('Loading simnet Bitcoin wallet')
DEX.createWallet(BTC_ID, {
walletname: '', // alpha wallet
rpcuser: 'user',
rpcpassword: 'pass',
rpcport: '20556',
}, pw, pw)
}

const simnetDexAddr = '127.0.0.1:17273'
if (!user.exchanges[simnetDexAddr]) {
await writeMain('Registering at simnet DEX server')
const defaultRegFee = 1e8
const serverCertPath = path.join(dextestDir, 'dcrdex', 'rpc.cert')
DEX.register(simnetDexAddr, pw, defaultRegFee, serverCertPath)
}
}

async function run () {
let net = Mainnet
const args = fetchIPC('cmdArgs', '')
if (args.indexOf('--simnet') > -1) net = Simnet
else if (args.indexOf('--testnet') > -1) net = Simnet
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Testnet


console.log("using network", NetName[net])

await writeMain('Starting DEX Core')
DEX.startCore()

if (net == Simnet) prepSimnet()

// Start server
const addr = `localhost:54321`
await writeMain('Starting Web Server')
await writeMain(`result: ${DEX.startServer(addr)}`)

window.location.href = `http://${addr}`
}

run()
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