feat: add installation script

install

@@ -0,0 +1,71 @@
+#!/bin/sh
+
+success() { printf " \033[1;32m ✔ %s\033[0m\n" "$*"; }
+inprogress() { printf " \033[1;34m ... %s\033[0m\n" "$*"; }
+warning() { printf " \033[1;33m ⚠️%s\033[0m\n" "$*"; }
+error() { printf " \033[1;31m ❌%s\033[0m\n" "$*"; }
+distro() {
+    if [ -f /etc/os-release ]; then
+        # shellcheck disable=SC1091
+        . /etc/os-release
+        DISTRO=$NAME
+        VERSION=$VERSION_ID
+    elif type lsb_release >/dev/null 2>&1; then
+        DISTRO=$(lsb_release -si)
+        VERSION=$(lsb_release -sr)
+    else
+        DISTRO=$(uname -s)
+        VERSION=$(uname -r)
+    fi
+    echo "$DISTRO:$VERSION"
+}
+
+pkg_install() {
+    case "$DISTRO" in
+    Arch\ Linux) paru -S --noconfirm gitmux ;;
+    Darwin)
+        brew tap arl/arl
+        brew install gitmux
+        ;;
+    *) error "Unsupported platform" && return 1 ;;
+    esac
+}
+
+go_install() { :; }
+
+gh_install() {
+    ver="$1"
+    repo='arl/gitmux'
+    [ -z "$ver" ] && {
+        archi=$(uname -sm)
+        latest="https://api.github.com/repos/$repo/releases/latest"
+        ver=$(curl -sS "$latest" | grep tarball_url | sed 's>.*: "\(.*\)".*>\1>') && test -n "$ver"
+        ver=${ver##*/}
+    }
+    tarname=''
+    case "$archi" in
+    Darwin\ arm64) tarname="gitmux_${ver}_macOS_arm64.tar.gz" ;;
+    Darwin\ x86_64) tarname="gitmux_${ver}_macOS_amd64.tar.gz" ;;
+    Linux\ aarch64*) tarname="gitmux_${ver}_linux_arm64.tar.gz" ;;
+    Linux\ *64) tarname="gitmux_${ver}_linux_amd64.tar.gz" ;;
+    *) error "Unsupported architecture" && return 1 ;;
+    esac
+    tmpdir="$(mktemp -d)"
+    cd "$tmpdir" || :
+    curl -sSLO "https://github.com/$repo/releases/download/$ver/$tarname"
+    tar -xf gitmux*.tar.gz &&
+        mv gitmux "${SCRIPTS:-"$HOME/.local/bin"}"
+    [ -d "$tmpdir" ] && rm -rf "$tmpdir"
+}
+
+SCRIPTS="${SCRIPTS:-$HOME/.local/bin}"
+! [ -d "$SCRIPTS" ] && mkdir -p "$SCRIPTS"
+DISTRO=$(distro | cut -d ':' -f1)
+
+inprogress "Installing gitmux"
+
+if pkg_install || gh_install "$@"; then
+    success "Succesfully installed gitmux"
+else
+    warning "Could not install gitmux"
+fi