#!/bin/bash
# Adapted from https://gist.github.com/domenic/ec8b0fc8ab45f39403dd.

set -e

function build {
  # Build docs
  npm run docs

  # Build the webpack
  VERSIONED=false npm run web-dist
}

# Ignore Travis checking PRs
if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then
  echo "deploy.sh: Ignoring PR build"
  build
  exit 0
fi

# Ignore travis checking other branches irrelevant to users
if [ "$TRAVIS_BRANCH" == "gh-pages" -o "$TRAVIS_BRANCH" == "gh-pages-dev" -o "$TRAVIS_BRANCH" == "docs" -o "$TRAVIS_BRANCH" == "webpack" -o "$TRAVIS_BRANCH" == "v8" ]; then
  echo "deploy.sh: Ignoring push to blacklisted branch"
  build
  exit 0
fi

SOURCE=$TRAVIS_BRANCH

# Make sure tag pushes are handled
if [ -n "$TRAVIS_TAG" ]; then
  echo "deploy.sh: This is a tag build, proceeding accordingly"
  SOURCE=$TRAVIS_TAG
fi

# Initialise some useful variables
REPO=`git config remote.origin.url`
SSH_REPO=${REPO/https:\/\/github.com\//git@github.com:}
SHA=`git rev-parse --verify HEAD`

# Decrypt and add the ssh key
ENCRYPTED_KEY_VAR="encrypted_${ENCRYPTION_LABEL}_key"
ENCRYPTED_IV_VAR="encrypted_${ENCRYPTION_LABEL}_iv"
ENCRYPTED_KEY=${!ENCRYPTED_KEY_VAR}
ENCRYPTED_IV=${!ENCRYPTED_IV_VAR}
openssl aes-256-cbc -K $ENCRYPTED_KEY -iv $ENCRYPTED_IV -in deploy/deploy_key.enc -out deploy_key -d
chmod 600 deploy_key
eval `ssh-agent -s`
ssh-add deploy_key

# Build everything
build

# Checkout the repo in the target branch so we can build docs and push to it
TARGET_BRANCH="docs"
git clone $REPO out -b $TARGET_BRANCH

# Move the generated JSON file to the newly-checked-out repo, to be committed
# and pushed
mv docs/docs.json out/$SOURCE.json

# Commit and push
cd out
git add .
git config user.name "Travis CI"
git config user.email "$COMMIT_AUTHOR_EMAIL"
git commit -m "Docs build: ${SHA}" || true
git push $SSH_REPO $TARGET_BRANCH

# Clean up...
cd ..
rm -rf out

# ...then do the same once more for the webpack
TARGET_BRANCH="webpack"
git clone $REPO out -b $TARGET_BRANCH

# Move the generated webpack over
mv webpack/discord.js out/discord.$SOURCE.js
mv webpack/discord.min.js out/discord.$SOURCE.min.js

# Commit and push
cd out
git add .
git config user.name "Travis CI"
git config user.email "$COMMIT_AUTHOR_EMAIL"
git commit -m "Webpack build: ${SHA}" || true
git push $SSH_REPO $TARGET_BRANCH