setup

#!/usr/bin/env bash

set -e
[ -n "$DEBUG" ] && set -x

check_requirement() {
    if ! command -v $1 &> /dev/null; then
        echo "Ops! $2 was not found, you will have to install it and try again."

        if [[ "$0" = "$BASH_SOURCE" ]] then
            exit 1
        fi
    fi
}

backup() {
    if [[ -f "$1/$2" ]] then
        cp -d "$1/$2" "$3/$2"
    fi
}

config() {
    if [[ -f "$3/$2" ]] then
        rm "$3/$2"
    fi

    cp "$1/$2" "$3/$2"
}

echo "Starting to setup your Linux..."

USER="${USER:-$(id -u -n)}"
HOME_DIR="${HOME_DIR:-$(getent passwd $USER 2>/dev/null | cut -d: -f6)}"
CONFIG_DIR="$HOME_DIR/.config"
FONTS_DIR="$HOME_DIR/.local/share/fonts"
BIN_DIR="$HOME_DIR/.local/bin"
SOURCE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

echo
echo "Please, review the information bellow."
echo "User name: ${USER}"
echo "Home folder: ${HOME_DIR}"
echo
echo "Existing configuration files will be overwritten."

echo
read -p "Continue? [y/n] " -n 1 -r
echo

if [[ ! $REPLY =~ ^[Yy]$ ]] then
    echo "Exiting..."

    if [[ "$0" = "$BASH_SOURCE" ]] then
        exit 1
    fi
fi

echo
echo "Checking for all requirements..."

check_requirement "curl" "curl"
check_requirement "git" "git"
check_requirement "kitty" "kitty"
check_requirement "zsh" "zsh"

echo "All good!"

BACKUP_FOLDER="$HOME_DIR/dotfiles_backup"

echo
echo "Backing up existent files..."

if [[ -d $BACKUP_FOLDER ]] then
    rm -r $BACKUP_FOLDER
fi

mkdir -p $BACKUP_FOLDER

backup $HOME_DIR ".aliases" $BACKUP_FOLDER
backup $HOME_DIR ".localrc" $BACKUP_FOLDER
backup $HOME_DIR ".zshrc" $BACKUP_FOLDER
backup $HOME_DIR ".gitconfig" $BACKUP_FOLDER
backup $HOME_DIR ".gitconfig.local" $BACKUP_FOLDER
backup "$CONFIG_DIR/kitty" "kitty.conf" $BACKUP_FOLDER

echo "Saved at $BACKUP_FOLDER"

echo

echo "Installing brew..."
export PATH="$PATH:/home/linuxbrew/.linuxbrew/bin"
NONINTERACTIVE=1 bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh?NONINTERACTIVE)">/dev/null
echo "Done!"

echo

echo "Installing zgenom..."
if [[ ! -d "$HOME_DIR/.zgenom" ]] then
    git clone --quiet --depth=1 https://github.com/jandamm/zgenom.git $HOME_DIR/.zgenom
fi
echo "Done!"

echo

echo "Setting up git..."
config "$SOURCE_DIR/config" ".gitconfig" $HOME_DIR
config "$SOURCE_DIR/config" ".gitconfig.local" $HOME_DIR
echo "Done!"

echo

echo "Setting up shell..."

config "$SOURCE_DIR/config" ".aliases" $HOME_DIR
config "$SOURCE_DIR/config" ".localrc" $HOME_DIR

if [[ ! -d "$BIN_DIR" ]] then
    mkdir -p "$BIN_DIR"
fi

echo "Done!"

echo

echo "Setting up zsh..."
config "$SOURCE_DIR/config" ".zshrc" $HOME_DIR
chsh -s $(which zsh) >/dev/null
echo "Done!"

echo

echo "Setting up p10k..."

if [[ ! -d "$HOME_DIR/powerlevel10k" ]] then
    git clone --quiet --depth=1 https://github.com/romkatv/powerlevel10k.git $HOME_DIR/powerlevel10k
fi

config "$SOURCE_DIR/config" ".p10k.zsh" $HOME_DIR

echo "Done!"

echo

echo "Setting up kitty..."

if [[ ! -d "$CONFIG_DIR/kitty" ]]; then
    mkdir -p "$CONFIG_DIR/kitty"
fi

config "$SOURCE_DIR/config" "kitty.conf" "$CONFIG_DIR/kitty"
chsh -s $(which zsh) >/dev/null

echo "Done!"

echo

echo "Installing diff-so-fancy, xclip, bat and glow..."
brew install --quiet diff-so-fancy xclip bat glow
echo "Done!"

echo

echo "Setting up custom fonts..."

if [[ ! -d "$FONTS_DIR" ]]; then
    mkdir "$FONTS_DIR"
fi

for FONT_FOLDER in "$SOURCE_DIR/fonts"/*; do
    if [[ -d "$FONT_FOLDER" ]]; then
        FONT_NAME="$(basename "$FONT_FOLDER")"
        TARGET_DIR="$FONTS_DIR/$FONT_NAME"

        cp -r "$FONT_FOLDER" "$TARGET_DIR"
    fi
done

sudo fc-cache -f

echo "Done!"

echo
echo "All done! Go ahead and make a good use of your OS."