zsh installation and set up on any debian/arch/fedora machine

zsh.sh

#!/usr/bin/env bash

PKG="zsh"
SHELL_DIR="$HOME/sh"
CONFIG_FILE="$HOME/.zshrc"
P10K_DIR="$SHELL_DIR/zsh/powerlevel10k"
SHELL_REPO="https://github.com/dpi0/sh"

# Backup existing config
timestamped_backup() {
    local target_file="$1"
    if [ -f "$target_file" ]; then
        local timestamp=$(date +"%d-%B-%Y_%H-%M-%S")
        mv "$target_file" "${target_file}.old.$timestamp"
        echo "Existing config backed up!"
    fi
}

# Remove existing directories
cleanup_existing() {
    [ -d "$SHELL_DIR" ] && rm -rf "$SHELL_DIR"
}

# Install package based on system type
install_pkg() {
    if command -v apt &> /dev/null; then sudo apt install -y $PKG
    elif command -v pacman &> /dev/null; then sudo pacman -Syu --noconfirm $PKG
    elif command -v dnf &> /dev/null; then sudo dnf install -y $PKG
    else echo "Unsupported system. Install manually..."
    fi
}

# Ensure required dependencies are installed
curl -fsSL bin.dpi0.cloud/git | sh

if ! command -v $PKG &> /dev/null; then
    echo "$PKG not found. Installing..."
    install_pkg
else
    echo "$PKG is already installed."
fi

download_repos() {
    git clone --depth 1 "$SHELL_REPO" "$SHELL_DIR"
}

# Create symlink for .zshrc
symlink_config() {
    ln -sf "$SHELL_DIR/zsh/.zshrc" "$CONFIG_FILE"
}

timestamped_backup "$CONFIG_FILE"
cleanup_existing
download_repos
symlink_config

echo "$PKG installation and setup complete. 🎉"