function install_plugins() {
    if ! command -v git >/dev/null 2>&1; then
        echo "Git is not installed."
        return
    fi

    if [ ! -n "${ZSH_PLUGINS_PATH}" ]; then
        echo "ZSH_PLUGINS_PATH is not set. Please set it and try again."
        return
    fi

    # git clone zsh-autosuggestions
    if [ ! -d "$ZSH_PLUGINS_PATH"/zsh-autosuggestions ]; then
        echo "Zsh Autosuggestions is not downloaded. Downloading..."
        # git clone https://github.com/zsh-users/zsh-autosuggestions.git "$ZSH_PLUGINS_PATH"/zsh-autosuggestions
        git clone https://gitee.com/mirrors/zsh-autosuggestions.git "$ZSH_PLUGINS_PATH"/zsh-autosuggestions
    else
        cd "$ZSH_PLUGINS_PATH"/zsh-autosuggestions || return
        if [ ! -d .git ]; then
            echo "Zsh Autosuggestions is not a git repository. Please remove $ZSH_PLUGINS_PATH/zsh-autosuggestions and try again."
            return
        else
            echo "Zsh Autosuggestions is already exist. Updating..."
            git pull
        fi
    fi

    # git clone zsh-syntax-highlighting
    if [ ! -d "$ZSH_PLUGINS_PATH"/zsh-syntax-highlighting ]; then
        echo "Zsh Syntax Highlighting is not downloaded. Downloading..."
        # git clone https://github.com/zsh-users/zsh-syntax-highlighting.git "$ZSH_PLUGINS_PATH"/zsh-syntax-highlighting
        git clone https://gitee.com/mirrors/zsh-syntax-highlighting.git "$ZSH_PLUGINS_PATH"/zsh-syntax-highlighting
    else
        cd "$ZSH_PLUGINS_PATH"/zsh-syntax-highlighting || return
        if [ ! -d .git ]; then
            echo "Zsh Syntax Highlighting is not a git repository. Please remove $ZSH_PLUGINS_PATH/zsh-syntax-highlighting and try again."
            return
        else
            echo "Zsh Syntax Highlighting is already exist. Updating..."
            git pull
        fi
    fi

    # git clone zsh-autocomplete
    if [ ! -d "$ZSH_PLUGINS_PATH"/zsh-autocomplete ]; then
        echo "Zsh Autocomplete is not downloaded. Downloading..."
        # git clone https://github.com/marlonrichert/zsh-autocomplete.git "$ZSH_PLUGINS_PATH"/zsh-autocomplete
        git clone https://gitee.com/mirrors/zsh-autocomplete.git "$ZSH_PLUGINS_PATH"/zsh-autocomplete

    else
        cd "$ZSH_PLUGINS_PATH"/zsh-autocomplete || return
        if [ ! -d .git ]; then
            echo "Zsh Autocomplete is not a git repository. Please remove $ZSH_PLUGINS_PATH/zsh-autocomplete and try again."
            return
        else
            echo "Zsh Autocomplete is already exist. Updating..."
            git pull
        fi
    fi

    # git clone powerlevel10k
    if [ ! -d "$ZSH_PLUGINS_PATH"/fzf-tab ]; then
        echo "fzf-tab is not downloaded. Downloading..."
        git clone https://github.com/Aloxaf/fzf-tab.git "$ZSH_PLUGINS_PATH"/fzf-tab
    else
        cd "$ZSH_PLUGINS_PATH"/fzf-tab || return
        if [ ! -d .git ]; then
            echo "fzf-tab is not a git repository. Please remove $ZSH_PLUGINS_PATH/fzf-tab and try again."
            return
        else
            echo "fzf-tab is already exist. Updating..."
            git pull
        fi
    fi

    # git clone oh-my-zsh
    if [ ! -d "$ZSH_PLUGINS_PATH"/ohmyzsh ]; then
        echo "Oh My Zsh is not downloaded. Downloading..."
        # git clone https://github.com/ohmyzsh/ohmyzsh.git "$PATH_OHMYZSH"
        git clone https://gitee.com/mirrors/ohmyzsh.git "$ZSH_PLUGINS_PATH"/ohmyzsh
    else
        cd "$ZSH_PLUGINS_PATH"/ohmyzsh || return
        if [ ! -d .git ]; then
            echo "Oh My Zsh is not a git repository. Please remove $ZSH_PLUGINS_PATH/ohmyzsh and try again."
            return
        else
            echo "Oh My Zsh is already exist. Updating..."
            git pull
        fi
    fi
}