deploy.bash

#!/bin/bash
{
#////////////////////////////////////
# deploy.bash
#
# Info:
# - Used to deploy changes of the DietPi website 
#   to view local changes before doing a PR on GitHub
# - Generates a DietPi website directory structure 
#   locally on the host running the script
#
# Usage:
# ./deploy.bash $1 $2 $3
# - $1 (optional) = deploy target directory (default: /tmp/DietPi-Website-<branch>, e.g. /tmp/DietPi-Website-master)
# - $2 (optional) = GitHub branch (default: master)
# - $3 (optional) = GitHub owner (default: MichaIng)
#
# Examples
# - ./deploy.bash /var/www
# - ./deploy.bash /var/www/public_html dev StephanStS
#
#////////////////////////////////////
#
# Inputs
# - Optional target directory
if [[ $1 == '/'* ]]
then
	TARGET_DIR=${1%/}

elif [[ $1 == '.' ]]
then
	TARGET_DIR=$PWD

elif [[ $1 ]]
then
	TARGET_DIR="$PWD/${1%/}"
else
	TARGET_DIR=
fi
# - Optional branch
if [[ $2 ]]
then
	BRANCH=$2

elif [[ $GITHUB_HEAD_REF ]]
then
	BRANCH=$GITHUB_HEAD_REF # PR

elif [[ $GITHUB_REF ]]
then
	BRANCH=${GITHUB_REF#refs/heads/} # push
else
	BRANCH='master'
fi
# - Optional owner
if [[ $3 ]]
then
	OWNER=$3

elif [[ $HEAD_OWNER ]]
then
	OWNER=$HEAD_OWNER # PR, custom env var

elif [[ $GITHUB_REPOSITORY_OWNER ]]
then
	OWNER=$GITHUB_REPOSITORY_OWNER # push
else
	OWNER='MichaIng'
fi

# Load DietPi-Globals
if [[ -f '/boot/dietpi/func/dietpi-globals' ]]
then
	. /boot/dietpi/func/dietpi-globals
else
	curl -sSf 'https://raw.githubusercontent.com/MichaIng/DietPi/master/dietpi/func/dietpi-globals' -o /tmp/dietpi-globals || exit 1
	. /tmp/dietpi-globals
	G_EXEC rm /tmp/dietpi-globals
fi

# Main
G_EXEC cd /tmp
G_EXEC curl -sSfLO "https://github.com/$OWNER/DietPi-Website/archive/$BRANCH.tar.gz"
# - Support forward slashes in branch name
G_EXEC tar xf "${BRANCH##*/}.tar.gz"
G_EXEC rm "${BRANCH##*/}.tar.gz"
# - GitHub replaces forward slashes with dashes for dir names
BRANCH=${BRANCH//\//-}
G_EXEC cd "DietPi-Website-$BRANCH"
# Cleanup
[[ $GITHUB_ACTIONS ]] || G_EXEC rm -R README.md LICENSE deploy.bash .??*
# Update sitemap timestamps
G_EXEC sed -i "s|<lastmod>.*</lastmod>|<lastmod>$(date '+%Y-%m-%dT%T%:z')</lastmod>|" sitemap.xml

# Bootstrap
G_EXEC curl -sSf 'https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css' -o css/bootstrap.css
G_EXEC curl -sSf 'https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.min.js' -o js/bootstrap.js

# Minify
# - Download
G_EXEC curl -sSfL "$(curl -sSf 'https://api.github.com/repos/tdewolff/minify/releases/latest' | mawk -F\" '/^ *\"browser_download_url\": ".*linux_amd64\.tar\.gz\"$/{print $4}')" -o minify.tar.gz
G_EXEC tar xf minify.tar.gz minify
G_EXEC rm minify.tar.gz
# - Minify JavaScript
for i in js/*.js
do
	G_EXEC ./minify -o "${i%.js}.min.js" "$i"
	G_EXEC rm "$i"
done
# - Minify CSS
for i in css/*.css
do
	G_EXEC ./minify -o "${i%.css}.min.css" "$i"
	G_EXEC rm "$i"
done
# - Minify HTML: Override original file afterwards
for i in ./*.html
do
	G_EXEC ./minify -o "${i%.html}.min.html" "$i"
	G_EXEC mv "${i%.html}.min.html" "$i"
done
G_EXEC rm minify

# Move/Merge into target directory
if [[ $TARGET_DIR ]]
then
	if [[ -d $TARGET_DIR ]]
	then
		G_EXEC cp -R . "$TARGET_DIR/"
		G_EXEC cd /tmp
		G_EXEC rm -R "DietPi-Website-$BRANCH"
	else
		G_EXEC cd /tmp
		G_EXEC mv "DietPi-Website-$BRANCH" "$TARGET_DIR"
	fi
fi
}