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@fuxingloh
fuxingloh / FacebookAppEventsPlugin.java
Created February 13, 2019 06:35
Facebook App Event plugin on Flutter. (Android only)
package app.munch.facebookappevents;
import android.os.Bundle;
import com.facebook.appevents.AppEventsLogger;
import io.flutter.plugin.common.MethodCall;
import io.flutter.plugin.common.MethodChannel;
import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
import io.flutter.plugin.common.MethodChannel.Result;
import io.flutter.plugin.common.PluginRegistry.Registrar;
@fuxingloh
fuxingloh / DateFormatter.swift
Created March 25, 2018 05:30
Swift date time formatting
let inFormatter = DateFormatter()
inFormatter.dateFormat = "HH:mm"
let outFormatter = DateFormatter()
outFormatter.dateFormat = "HHmm"
"12:00".replacingOccurrences(of: ":", with: "")
let open = inFormatter.date(from: "12:00")
let open1 = outFormatter.string(from: open!)
@fuxingloh
fuxingloh / Image.md
Last active October 14, 2021 01:08
A list of minimal effort image storage, transformation and delivery.

Minimal effort image storage, transformation and delivery.

IaaS

AWS: Serverless Image Handler

  • Storage: You upload to S3
  • Delivery + Transformation: CloudFront -> API Gateway -> Lambda (Node, Sharp/Thumbor) -> S3
  • CloudFormation: 1 click and fill up some fields.
  • Only predefined S3 Bucket, no dynamic bucket routing.
  • Transformation is encoded into Base64 that can be generated by anyone. You can add Signed URL but it's quite troublesome.
@fuxingloh
fuxingloh / defichain.svg
Created September 7, 2021 13:13
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@fuxingloh
fuxingloh / bech32-defichain.txt
Created June 3, 2021 02:45
a list of very insecure defichain address https://github.com/DeFiCh/jellyfish/blob/main/packages/jellyfish-wallet/__tests__/wallet.test.ts
bcrt1qf5v8n3kfe6v5mharuvj0qnr7g74xnu9leut39r
bcrt1qnkmmcu79glheaqsq3gj4gg4675z3cjzn39dt24
bcrt1qrvt6c60848p8y8vd3pejdt33davp5ka9vxupuj
bcrt1qur2tmednr6e52u9du972nqvua60egwqkf98ps8
bcrt1qxvvp3tz5u8t90nwwjzsalha66zk9em95tgn3fk
bcrt1qdje7lynhsru5t9f2d8u6ckzsvmj8awq4m2qudx
bcrt1qj8wk7gzvaj6hyyupsj0hkuevg97lu23axlkjnm
bcrt1qqjrg9hkffz76fppvvlz5qulleagnhdkvde2xg2
bcrt1q7gqw25aac4k3um5v7n45tg08944nru29hkz9xc
bcrt1q2tke5fa7wx26m684d7yuyt85rvjl36u6q8l6e2
@fuxingloh
fuxingloh / Bip32Patch.test.ts
Created April 5, 2021 06:25
Bip32Path TypeScript
import { BIP32Path } from '../../src/utils/bip32_path'
describe('fromPathArray()', function () {
it('should work with proper input', function () {
const bipPath = BIP32Path.fromPathArray([44 | 0x80000000, 1, 1, 0])
expect(bipPath.toString()).toBe("m/44'/1/1/0")
})
})
describe('toPathArray()', function () {
@fuxingloh
fuxingloh / artifactory.sh
Last active March 9, 2021 13:05
Install Artifactory on AWS AMI and register as service to auto start and then starts it. Test on lightsail. Register as startup script.
#!/bin/bash
# Upgrade to Java-8
sudo yum install java-1.8.0
sudo yum remove java-1.7.0-openjdk
# Installing Artifactory
wget https://bintray.com/jfrog/artifactory-rpms/rpm -O bintray-jfrog-artifactory-rpms.repo
sudo mv bintray-jfrog-artifactory-rpms.repo /etc/yum.repos.d/
sudo yum install jfrog-artifactory-oss
@fuxingloh
fuxingloh / Dockerfile
Last active January 24, 2021 12:53
Nuxt.js & AWS S3 Deployment for Rolling Deployment
FROM node:8.12.0-alpine
# Installing AWS CLI
RUN apk add --no-cache --virtual .build-deps
RUN apk add bash
RUN apk add make && apk add curl && apk add openssh
RUN apk add git
RUN ln -sf /usr/share/zoneinfo/Etc/UTC /etc/localtime
RUN apk -Uuv add groff less python py-pip
RUN pip install awscli
@fuxingloh
fuxingloh / intellij-markdown.css
Created December 11, 2020 06:15
Ultra simple white theme markdown for IntelliJ
body {
filter: invert(1);
background: #fff;
}
img {
filter: invert(1);
}
@fuxingloh
fuxingloh / lightsail.sh
Created September 21, 2020 09:19
Setup Docker & Docker-Compose on AWS Lightsail Amaozn Linux 2
sudo yum install docker
sudo service docker start
sudo usermod -a -G docker ec2-user
sudo chkconfig docker on
sudo curl -L https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose