refactor(bootstrap): modularize bootstrap script for improved readabi…

…lity and maintenance Refactors `make-bootstrap.sh` by modularizing key functions (e.g., `check_dependencies`, `clean_pacman_cache`, `setup_locale`, `setup_network`, `update_system`). Adds configuration variables for URLs, file names, and color codes for improved readability. Simplifies maintenance and expands functionality to include system cleanup, dependency checking, and structured configuration of the Arch Linux rootfs for WSL.
ruizlenato · Nov 3, 2024 · 4c8b836 · 4c8b836
1 parent 7b5e764
commit 4c8b836
Showing 1 changed file with 100 additions and 41 deletions.
diff --git a/make-bootstrap.sh b/make-bootstrap.sh
@@ -1,67 +1,126 @@
 #!/usr/bin/env bash
-
 # Copyright (C) 2024 Luiz Renato
 # SPDX-License-Identifier: GPL-3.0-only
 
-# Clear shell
+# Script configuration
+readonly ROOTFS_URL="https://mirror.rackspace.com/archlinux/iso/latest/archlinux-bootstrap-x86_64.tar.zst"
+readonly ROOTFS_FILE="archlinux-bootstrap-x86_64.tar.zst"
+readonly ROOTFS_DIR="root.x86_64"
+readonly PKGLIST_FILE="pkglist.x86_64.txt"
+readonly OUTPUT_FILE="ArchWSLBootstrap-$(date -u +%Y-%m-%d).tar.gz"
+
+# Color codes
+readonly RED='\e[1;31m'
+readonly GREEN='\e[1;32m'
+readonly YELLOW='\e[1;33m'
+readonly NC='\e[m' # No Color
+
 clear
 
 # Dependency check
-if ! dpkg -s wget >/dev/null 2>&1; then
-  sudo apt-get install get
-fi
+check_dependencies() {
+        local deps=("wget" "zstd")
+        for dep in "${deps[@]}"; do
+                if ! dpkg -s "$dep" >/dev/null 2>&1; then
+                        sudo apt-get install -y "$dep"
+                fi
+        done
+}
 
 start() {
-  echo -e '\e[1;31mBuilding bootstrap\e[m'
-  download
+        check_dependencies
+        echo -e "${RED}Building bootstrap${NC}"
+        download
 }
 
 download() {
-  echo -e '\e[1;33mDownloading Arch Linux rootfs\e[m'
-  wget https://mirror.rackspace.com/archlinux/iso/latest/archlinux-bootstrap-x86_64.tar.zst -q
-  printf "\033[A\033[K"
-  echo -e '\e[1;32m✓\e[m Arch Linux rootfs downloaded!'
-  extract
+        echo -e "${YELLOW}Downloading Arch Linux rootfs${NC}"
+        wget "$ROOTFS_URL" -q
+        printf "\033[A\033[K"
+        echo -e "${GREEN}✓${NC} Arch Linux rootfs downloaded!"
+        extract
 }
 
 extract() {
-  echo -e '\e[1;33mExtracting Arch Linux rootfs\e[m'
-  sudo tar --xattrs --xattrs-include="security.capability" -I zstd -xpf archlinux-bootstrap-x86_64.tar.zst &>/dev/null
-  printf "\033[A\033[K"
-  echo -e '\e[1;32m✓\e[m Extract Arch Linux rootfs!'
-  configure
+        echo -e "${YELLOW}Extracting Arch Linux rootfs${NC}"
+        sudo tar --xattrs --xattrs-include="security.capability" -I zstd -xpf "$ROOTFS_FILE" &>/dev/null
+        printf "\033[A\033[K"
+        echo -e "${GREEN}✓${NC} Extract Arch Linux rootfs!"
+        configure
+}
+
+clean_pacman_cache() {
+        yes | sudo chroot "$ROOTFS_DIR" /usr/bin/pacman -Scc &>/dev/null
+}
+
+update_mirrorlist() {
+        sudo curl "https://archlinux.org/mirrorlist/?country=US&protocol=https&ip_version=4" \
+                -o "$ROOTFS_DIR/etc/pacman.d/mirrorlist" &>/dev/null
+        sudo sed -i -e "s/#Server/Server/g" "$ROOTFS_DIR/etc/pacman.d/mirrorlist"
+}
+
+update_system() {
+        sudo cp -f /etc/resolv.conf "$ROOTFS_DIR/etc/resolv.conf"
+        sudo chroot "$ROOTFS_DIR" /usr/bin/pacman -Syu --noconfirm &>/dev/null
+}
+
+setup_locale() {
+        sudo sed -i -e "s/#en_US.UTF-8/en_US.UTF-8/" "$ROOTFS_DIR/etc/locale.gen"
+        echo "LANG=en_US.UTF-8" >"$ROOTFS_DIR/etc/locale.conf"
+        sudo ln -sf /etc/locale.conf "$ROOTFS_DIR/etc/default/locale"
+}
+
+setup_network() {
+        sudo rm -rf "$ROOTFS_DIR/etc/resolv.conf"
+        echo "# This file was automatically generated by WSL." >"$ROOTFS_DIR/etc/resolv.conf"
+        sudo cp -f /etc/resolv.conf "$ROOTFS_DIR/etc/resolv.conf"
+}
+
+copy_config_files() {
+        sudo cp wsl.conf "$ROOTFS_DIR/etc/wsl.conf"
+        sudo cp bash_profile "$ROOTFS_DIR/root/.bash_profile"
+}
+
+cleanup_system_files() {
+        local files=(
+                "/etc/machine-id"
+                "/usr/lib/systemd/system/sysinit.target.wants/systemd-firstboot.service"
+        )
+
+        for file in "${files[@]}"; do
+                sudo rm -rf "${ROOTFS_DIR}${file}"
+        done
 }
 
 configure() {
-  echo -e '\e[1;33mSetting up a few basic things in bootstrap\e[m'
-  sudo curl "https://archlinux.org/mirrorlist/?country=US&protocol=https&ip_version=4" -o root.x86_64/etc/pacman.d/mirrorlist &>/dev/null
-  sudo sed -i -e "s/#Server/Server/g" root.x86_64/etc/pacman.d/mirrorlist
-  sudo cp wsl.conf root.x86_64/etc/wsl.conf
-  sudo cp bash_profile root.x86_64/root/.bash_profile
-  sudo sed -i -e "s/#en_US.UTF-8/en_US.UTF-8/" root.x86_64/etc/locale.gen
-  echo "LANG=en_US.UTF-8" | sudo tee root.x86_64/etc/locale.conf
-  sudo ln -sf /etc/locale.conf root.x86_64/etc/default/locale
-  sudo rm -rf root.x86_64/etc/resolv.conf
-  sudo rm -rf root.x86_64/etc/machine-id
-  sudo rm -rf root.x86_64/usr/lib/systemd/system/sysinit.target.wants/systemd-firstboot.service
-  echo "# This file was automatically generated by WSL." | sudo tee root.x86_64/etc/resolv.conf
-  printf "\033[A\033[K"
-  echo -e '\e[1;32m✓\e[m Complete setup!'
-  compress
+        echo -e "${YELLOW}Setting up a few basic things in bootstrap${NC}"
+
+        clean_pacman_cache
+        update_mirrorlist
+        copy_config_files
+        setup_locale
+        setup_network
+        cleanup_system_files
+        update_system
+
+        printf "\033[A\033[K"
+        echo -e "${GREEN}✓${NC} Complete setup!"
+        compress
+        cleanup
 }
 
 compress() {
-  echo -e '\e[1;33mBuilding bootstrap\e[m'
-  sudo tar --xattrs --xattrs-include="security.capability" -zcpf ArchWSLBootstrap-$(date -u +%Y-%m-%d).tar.gz -C root.x86_64 .
-  sudo chown root:root ArchWSLBootstrap-$(date -u +%Y-%m-%d).tar.gz
-  printf "\033[A\033[K"
-  echo -e '\e[1;32m✓\e[m Building bootstrap!'
+        echo -e "${YELLOW}Building bootstrap${NC}"
+        sudo tar --xattrs --xattrs-include="security.capability" \
+                -zcpf "$OUTPUT_FILE" -C "$ROOTFS_DIR" .
+        sudo chown root:root "$OUTPUT_FILE"
+        printf "\033[A\033[K"
+        echo -e "${GREEN}✓${NC} Building bootstrap!"
 }
 
 cleanup() {
-  sudo rm -rf archlinux-bootstrap-x86_64.tar.zst root.x86_64/
-  clear
-  echo -e '\e[1;32mAll done.\e[m'
+        sudo rm -rf "$ROOTFS_FILE" "$ROOTFS_DIR" "$PKGLIST_FILE"
+        echo -e "${GREEN}All done.${NC}"
 }
 
-start
+start