# All Docs

# Config-files

AppVeyor Config template

# appveyor.yml

### https://github.com/sindresorhus/appveyor-node/blob/master/appveyor.yml
os: unstable

max_jobs: 5
environment:
  matrix:
    - platform: x64

cache:
  - node_modules
  - '%USERPROFILE%\.electron-gyp'
  - '%USERPROFILE%\.node-gyp'

install:
  - ps: Install-Product node 10.15.3 x64
  - set CI=true
  - npm install -g npm@latest
  - npm install

build: off

matrix:
  fast_finish: true

test_script:
  - node --version
  - npm --version
  - npm run build-quick
  - npm run test-build

artifacts:
  - path: ./build/*.exe
    name: executables
  - path: ./test/__testResults__
    name: results

deploy:
  release: myproduct-v$(appveyor_build_version)
  description: 'Release description'
  provider: GitHub
  auth_token:
    secure: w086h7SsN4ZengkZWbBcX3yNc9lM9vS0d7KD7ED0OSblaBlaBla ### your encrypted token from GitHub
  artifact: executables, results
  draft: true
  prerelease: true
  on:
    branch: master
    ### APPVEYOR_REPO_TAG: true 

# travis.github.release

# .travis-github-release.yaml

sudo: required
dist: trusty

language: node_js
cache: 
  - npm
  - directories:
    - ./build

notifications:
  email:
    on_success: never
    on_failure: change

matrix:
  include:
    - os: linux
      node_js: lts/*

install:
  - npm install

script:
  - npm run download

deploy:
  overwrite: true
  provider: releases
  api_key: $GITHUB_TOKEN
  file_glob: true
  file: out/*
  skip_cleanup: true
  draft: true

# .gitignore

logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*

### Runtime data
pids
*.pid
*.seed
*.pid.lock

### Directory for instrumented libs generated by jscoverage/JSCover
lib-cov

### Coverage directory used by tools like istanbul
coverage

### nyc test coverage
.nyc_output

### Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)## .grunt

### Bower dependency directory (https://bower.io/)
bower_components

### node-waf configuration
.lock-wscript

### Compiled binary addons (https://nodejs.org/api/addons.html)
build/Release

### Dependency directories
node_modules/
jspm_packages/

### TypeScript v1 declaration files
typings/

### Optional npm cache directory
.npm

### Optional eslint cache
.eslintcache

### Optional REPL history
.node_repl_history

### Output of 'npm pack'
*.tgz

### Yarn Integrity file
.yarn-integrity

### dotenv environment variables file
.env
.env.test

### parcel-bundler cache (https://parceljs.org/)
.cache

### next.js build output
.next

### nuxt.js build output
.nuxt

### vuepress build output
.vuepress/dist

### Serverless directories
.serverless/

### FuseBox cache
.fusebox/

### DynamoDB Local files
.dynamodb/

# travis-firebase-hosting

# .travis-firebase-hosting.yaml

sudo: required
dist: trusty

language: node_js
cache: 
  - npm
  - directories:
    - ./build

notifications:
  email:
    on_success: never
    on_failure: change

matrix:
  include:
    - os: linux
      node_js: lts/*

install:
  - npm install

script:
  - npm run build

deploy:
  provider: firebase
  token:
    secure: "YOUR ENCRYPTED token"
  project: "myapp-staging"
  local_dir: "dist"
  skip_cleanup: true

after_deploy:
  - npm run after-deploy

# .travis-github-pages.yaml

sudo: required
dist: trusty

language: node_js
cache: 
  - npm
  - directories:
    - ./build

notifications:
  email:
    on_success: never
    on_failure: change

matrix:
  include:
    - os: linux
      node_js: lts/*

install:
  - npm install

script:
  - npm run build

deploy:
  local_dir: [dist-dir]### e.g. local_dir: ./.vuepress/dist
  provider: pages
  skip_cleanup: true
  github_token: $GITHUB_TOKEN
  fqdn: [subdomain].[domain].[ext] #e.g.## fqdn: notes.nishkal.in
  on:
    branch: master

# tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
    "importHelpers": true,
    "outDir": "./dist",
    "inlineSourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es5",
    "lib": [
      "es2017",
      "dom"
    ],
    "baseUrl": "./",
    "module": "umd",
    "types": [
      "node"
    ],
    "typeRoots": [
      "node_modules/@types"
    ],
    "strict": false,
    "skipLibCheck": true,
    "allowJs": true
  },
    "include": [
    "src/*",
    "worker/*"
  ],
  "exclude": [
    "**/node_modules/*",
  ]
}

# cloudbuild.yml

steps:
### Decrypt
- name: gcr.io/cloud-builders/gcloud
  args:
  - kms
  - decrypt
  - --ciphertext-file=.env.enc
  - --plaintext-file=.env
  - --location=global
  - --keyring=cloud-build-keyring
  - --key=cloud-build-key

### install
- name: 'gcr.io/cloud-builders/npm'
  args : ['install']

### build
- name: 'gcr.io/cloud-builders/npm'
  args : ['run','cloud-build']

### deploy
- name: 'gcr.io/cloud-builders/npm'
  args : ['run','deploy-ci']

# Snippets

# Github encrypt files

# 1. Encrypting and decrypting files

1. Adding files to a tar archive.

### Where foo and bar are the files you want to encrypt.
tar cvf ./path-to-secrets.tar foo bar

2. Encrypting file

gpg --symmetric --cipher-algo AES256 ./path-to-secrets.tar

3. Decrypting file

gpg --quiet --batch --yes --decrypt --passphrase="$SECRET_KEY" --output ./path-to-output-file.tar ./path-to-input-gpg-file.gpg

4. Extracting the tar archive

### -C is for CWD
tar xvf secrets.tar -C ./out-dir

# Node on Linux

# For node 12

1. curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
2. sudo apt-get install -y nodejs

# SSH

# 1. Generate ssh key

ssh-keygen

// variation
ssh-keygen -t ras

# 2. Copy to server

// login to server

nano ~/.ssh/authorized_keys

# 3. Change SSH config

// edit config here
sudo nano /etc/shell/sshd_config

// after editing
sudo systemctl reload sshd

# 4. Create new user with sudo

$ adduser my-user-name

$ id my-user-name

$ usermod -aG sudo my-user-name

$ id my-user-name

# Website plan

# Markdown v/s Wordpress CMS

• Cannot use custom components/HTML. See following examples -
  • shasum
  • download page
  • custom signature

# What can we do about it?

• You use wordpress (wont be able to help, scalability issues, maintenance e.t.c)
• You learn to write markdown
• OR
  • Use wordpress as CMS
  • Convert wordpress website to markdown

# Type of content

• Exactly as same as fireship.io
  1. Courses - paid as well as free
  2. one-to-one video mapping
  3. quick snippets
  4. tags
  5. NOT categories (see below)

# Discuss data structure

• Get categories list (Do we even need category?)
• Get tags list

# Meta material

• Comments section (slack v/s disqus)
• Analytics stuff
• Image compression (because terrible football analyses was very heavy)

# Ask Aayush

• Adobe premium pro (aayu would see plans /feasibility e.t.c)
• Elastic search/Algolia
• Check other blogs for fitness, their layout e.t.c

# Building portfolio

# 1. Install node.js

# 2. Install Git SCM

# 3. Clone the Git repo

1. Open a terminal in the folder where you want to clone the repo
2. Run the following command

git clone https://github.com/Nishkalkashyap/portfolio.git

# 4. Change the terminal directory

Run the following command

cd portfolio

# 5. Install project

Run the following command

npm install

# 6. Start the local server to begin editing the project

1. Run the following command

npm run start

2. Open your web-browser and type http://localhost to see the website.

# 7. Start editing file

1. Open the file in local directory /.vuepress/components/Resume.vue
2. Edit the file and save the changes
3. Observe the changes in the website

# Using ffmpeg.

#video## scaling
ffmpeg -i 'input.mp4' -vf "scale=1920:-1" './output.mp4'

#changing## bitrate
ffmpeg -i 'input.mp4' -b:v "1000K"  './output.mp4'

#bitrate## alternative (crf may vary from 18-24 i.e. high quality to low quality);
ffmpeg -i 'input.mp4' -vcodec libx264 -crf 24  './output.mp4'

#video## speed (take note of -an flag. Removed audio)
ffmpeg -i 'input.mp4' -vf "setpts=0.5*PTS" -an './output.mp4'

#framerate## ffmpeg -i 'input.mp4' -r 24 -an './output.mp4'

#screenshot## ffmpeg -i 'input.mp4' -ss 01:23:45 -vframes 1 './output.jpg'

#override:## take note of -y flag
ffmpeg -y -i 'input.mp4' './output.mp4'

#chaining## commands - use ';' in powershell and '&&' in bash
ffmpeg -f concat -i files.txt -an -codec copy output1.mov;ffmpeg -i output1.mov -vf "setpts=0.5*PTS,scale=800:-1" -b:v "1000K" output2.mov

#video## concat
### ref: https://stackoverflow.com/questions/7333232/how-to-concatenate-two-mp4-files-using-ffmpeg#11175851## cat mylist.txt
file '/path/to/file1'
file '/path/to/file2'
file '/path/to/file3'

ffmpeg -f concat -i mylist.txt -c copy output.mp4

# Quark news mentions

lemondeinformatique.fr

infoworld.com

Javascript weekly

Node weekly

ciokorea.com

# Setting up a VPN Server.

• Follow the guide here
• Do not waste time setting up open VPN.

# Firebase functions:config:set

# 1. To set environment variables

firebase functions:config:set someservice.key="THE API KEY" someservice.id="THE CLIENT ID"

# 2. To get environment variables

firebase functions:config:get someservice

• which returns

{
  "someservice": {
    "key":"THE API KEY",
    "id":"THE CLIENT ID"
  }
}

# OpenSSL encrypt/decrypt files.

# 1. To encrypt

openssl enc -aes-256-cbc -in un_encrypted.data -out encrypted.data

# 2. To decrypt

//with password prompt
openssl enc -d -aes-256-cbc -in encrypted.data -out un_encrypted.data

//without password prompt
openssl enc -d -aes-256-cbc -in encrypted.data -out un_encrypted.data -k [MyPassword]
e.g. openssl enc -d -aes-256-cbc -in encrypted.data -out un_encrypted.data -k 123456789

# Travis encrypt files

# 1. Encrypting a single file

### use --add flag to automatically add decrypt script to .travis.yml.
travis encrypt-file inputFilePath outputFilePath --add

# 2. Encrypting multiple files

1. Adding files to a tar archive.

### Where foo and bar are the files you want to encrypt.
tar cvf secrets.tar foo bar
travis encrypt-file secrets.tar --add

2. Extracting the tar archive

//-C is for CWD
- tar xvf secrets.tar -C ./out-dir

# Appvoyer encrypt files

# 1. Encrypting file on development machine

• Download secure-file utility by running the following command on development machine:

### on windows
iex ((New-Object Net.WebClient).DownloadString('https://raw.githubusercontent.com/appveyor/secure-file/master/install.ps1'))

### on linux
curl -sflL 'https://raw.githubusercontent.com/appveyor/secure-file/master/install.sh' | bash -e -

• To encrypt a file:

### on windows
appveyor-tools\secure-file -encrypt C:\path-to\filename-to-encrypt.ext -secret MYSECRET1234

### on linux
./appveyor-tools/secure-file -encrypt /path-to/filename-to-encrypt.ext -secret MYSECRET1234

Encrypted file will be saved in the same directory as the input file, but with the .enc extension added. You can optionally specify output file name with the -out parameter.

# 2. Decrypting files during an AppVeyor build

• Put the “secret” value to the project environment variables on the Environment tab of the project settings or in the appveyor.yml as a secure variable:

environment:
  my_secret:
    secure: BSNfEghh/l4KAC3jAcwAjgTibl6UHcZ08ppSFBieQ8E=

• To decrypt the file, add these lines to the install section of your project config:

install:
  - ps: iex ((New-Object Net.WebClient).DownloadString('https://raw.githubusercontent.com/appveyor/secure-file/master/install.ps1'))
  - cmd: appveyor-tools\secure-file -decrypt path-to\encrypted-filename.ext.enc -secret %my_secret%
  - sh: ./appveyor-tools/secure-file -decrypt path-to/encrypted-filename.ext.enc -secret $my_secret

The line starting with cmd: will run on Windows-based images only and the line starting with sh: on Linux.

# Setup travis

# 1. Generate firebase token.

### This generates a token, e.g. "1/AD7sdasdasdKJA824OvEFc1c89Xz2ilBlaBlaBla"
firebase login:ci
### Encrypt this token
travis encrypt "1/AD7sdasdasdKJA824OvEFc1c89Xz2ilBlaBlaBla" --add
### This command may generate a warning ("If you tried to pass the name of the repository as the first argument, you probably won't get the results you wanted"). You can ignore it.

# 2. Copy base .travis.yml fron here

# 3. Push code to github.

# Setup travis

# 1. Add a personal access token on github.

# 2. Make sure to have required "homepage" field in package.json.

e.g.

{
    ...
    "homepage": "https://nishkalkashyap.github.io/notes",
}

# 3. Enable build on travis-ci, and add personal access token in environment variables.

# 4. Copy base .travis.yml fron here

# 5. Add A records of custom domain like so.

# Setup cloud build

# 1. Goto Build Page

# 2. Go to triggers in the sidebar and select trigger.

# 3. Setup local dev environment.

1. Add the .env file with all the environment variables.

2. Get the Keys from google-cloud-iam.

3. Run the following command.

gcloud kms encrypt   --plaintext-file=.env   --ciphertext-file=.env.enc   --location=global   --keyring=cloud-build-keyring   --key=cloud-build-key

3. Add the cloudbuild.yaml file at the root of your project. Copy the config file reference fron here.
4. Push to the repo.

# Replies

# Email response