Add a script to install dependencies

scripts/install-dependencies.sh

@@ -0,0 +1,174 @@
+#!/bin/sh
+#
+# Script that installs the various dependencies of invidious
+#
+# Dependencies:
+# - crystal       => Language in which Invidious is developed
+# - postgres      => Database server
+# - git           => required to clone Invidious
+# - librsvg2-bin  => For login captcha (provides 'rsvg-convert')
+#
+# - libssl-dev    => Used by Crystal's SSL module (standard library)
+# - libxml2-dev   => Used by Crystal's XML module (standard library)
+# - libyaml-dev   => Used by Crystal's YAML module (standard library)
+# - libgmp-dev    => Used by Crystal's BigNumbers module (standard library)
+# - libevent-dev  => Used by crystal's internal scheduler (?)
+# - libpcre3-dev  => Used by Crystal's regex engine (?)
+#
+# - libsqlite3-dev   => Used to open .db files from NewPipe exports
+# - zlib1g-dev       => TBD
+# - libreadline-dev  => TBD
+#
+#
+# Tested on:
+# - OpenSUSE Leap 15.3
+
+#
+# Load system details
+#
+
+if [ -e /etc/os-release ]; then
+	. /etc/os-release
+elif [ -e /usr/lib/os-release ]; then
+	. /usr/lib/os-release
+else
+	echo "Unsupported Linux system"
+	exit 2
+fi
+
+#
+# Some variables
+#
+
+repo_base_url="https://download.opensuse.org/repositories/devel:/languages:/crystal/"
+repo_end_url="devel:languages:crystal.repo"
+
+apt_gpg_key="/usr/share/keyrings/crystal.gpg"
+apt_list_file="/etc/apt/sources.list.d/crystal.list"
+
+yum_repo_file="/etc/yum.repos.d/crystal.repo"
+
+#
+# Major install functions
+#
+
+make_repo_url() {
+	echo "${repo_base_url}/${1}/${repo_end_url}"
+}
+
+
+install_apt() {
+	repo="$1"
+
+	echo "Adding Crystal repository"
+
+	curl -fsSL "${repo_base_url}/${repo}/Release.key" \
+		| gpg --dearmor \
+		| sudo tee "${apt_gpg_key}" > /dev/null
+
+	echo "deb [signed-by=${apt_gpg_key}] ${repo_base_url}/${repo}/ /" \
+		| sudo tee "$apt_list_file"
+
+	sudo apt-get update
+
+	sudo apt-get install --yes --no-install-recommends \
+		libssl-dev libxml2-dev libyaml-dev libgmp-dev libevent-dev \
+		libpcre3-dev libreadline-dev libsqlite3-dev zlib1g-dev \
+		crystal postgres git librsvg2-bin make
+}
+
+install_yum() {
+	repo=$(make_repo_url "$1")
+
+	echo "Adding Crystal repository"
+
+	cat << END | sudo tee "${yum_repo_file}" > /dev/null
+[crystal]
+name=Crystal
+type=rpm-md
+baseurl=${repo}/
+gpgcheck=1
+gpgkey=${repo}/repodata/repomd.xml.key
+enabled=1
+END
+
+	sudo yum -y install \
+		openssl-devel libxml2-devel libyaml-devel gmp-devel \
+		readline-devel sqlite-devel \
+		crystal postgresql postgresql-server git librsvg2-tools make
+}
+
+install_pacman() {
+	# TODO: find an alternative to --no-confirm?
+	sudo pacman -S --no-confirm \
+		base-devel librsvg postgresql crystal
+}
+
+install_zypper()
+{
+	repo=$(make_repo_url "$1")
+
+	echo "Adding Crystal repository"
+	sudo zypper --non-interactive addrepo -f "$repo"
+
+	sudo zypper --non-interactive --gpg-auto-import-keys install --no-recommends \
+		libopenssl-devel libxml2-devel libyaml-devel gmp-devel libevent-devel \
+		pcre-devel readline-devel sqlite3-devel zlib-devel \
+		crystal postgresql postgresql-server git rsvg-convert make
+}
+
+
+#
+# System-specific logic
+#
+
+case "$ID" in
+	archlinux) install_pacman;;
+
+	centos) install_dnf "CentOS_${VERSION_ID}";;
+
+	debian)
+		case "$VERSION_CODENAME" in
+			sid)      install_apt "Debian_Unstable";;
+			bookworm) install_apt "Debian_Testing";;
+			*)        install_apt "Debian_${VERSION_ID}";;
+		esac
+	;;
+
+	fedora)
+		if [ "$VERSION" == *"Prerelease"* ]; then
+			install_dnf "Fedora_Rawhide"
+		else
+			install_dnf "Fedora_${VERSION}"
+		fi
+	;;
+
+	opensuse-leap) install_zypper "openSUSE_Leap_${VERSION}";;
+
+	opensuse-tumbleweed) install_zypper "openSUSE_Tumbleweed";;
+
+	rhel) install_dnf "RHEL_${VERSION_ID}";;
+
+	ubuntu)
+		# Small workaround for recently released 22.04
+		case "$VERSION_ID" in
+			22.04) install_apt "xUbuntu_21.04";;
+			*)     install_apt "xUbuntu_${VERSION_ID}";;
+		esac
+	;;
+
+	*)
+		# Try to match on ID_LIKE instead
+		# Not guaranteed to 100% work
+		case "$ID_LIKE" in
+			archlinux) install_pacman;;
+			centos) install_dnf "CentOS_${VERSION_ID}";;
+			debian) install_apt "Debian_${VERSION_ID}";;
+			*)
+				echo "Error: distribution ${CODENAME} is not supported"
+				echo "Please install dependencies manually"
+				exit 2
+			;;
+		esac
+	;;
+esac