#!//usr/bin/env bash

# CONSTANTS
# ---------

GIT_BASE_URL="https://git.artcode.re/pvincent/debian-gnome"
LOGOUT_REQUIRED=false
BASEDIR=$(readlink -f "$(dirname "$0")/..")
ALLOWED_USERS=$(id -un) # CUSTOMIZE if needed!
REQUIRED_PACKAGES=(
    bash-completion
    vim micro git wget
    htop jq unzip tilix
    zram-tools
)

# FUNCTIONS
# ---------

function trap_error() {
    error_code=$1
    error_line=$2

    printf "\nEXIT #${error_code} due to error at line ${error_line} : \n-----------------------------------------\n"
    sed "${error_line}q;d" $0
    echo
    exit $error_code
}

function runVoid() {
    trap - ERR
    local COMMAND="$@"
    bash -c "${COMMAND}" > /dev/null 2>&1
    runVoidError=$?
    trap 'trap_error $? $LINENO' ERR
}

function askConfirmation() {
    case "$1" in
        y | Y | yes | YES)
            QUESTION="(Y/n)?"
            DEFAULT=0
            ;;
        *)
            QUESTION="(y/N)?"
            DEFAULT=1
            ;;
    esac
    read -p "$QUESTION : " choice
    case "$choice" in
        y | Y | yes | YES) return 0 ;; #true
        n | no | N | NO) return 1 ;;   #false
        *) return $DEFAULT ;;
    esac
}

function upgrade {
    echo "# updating repositories"
    echo "==================="
    if [[ $(date --date='-12 hours' +%s) -gt $(date -d "$(stat -c %y /var/lib/apt/lists/partial)" +%s) ]]; then
        sudo apt update
        sudo apt autoremove -y
    else
        echo "repositories recently updated!"
    fi
}

function apt_required_packages {
    echo "# required packages"
    echo "==================="
    for package in ${REQUIRED_PACKAGES[@]}; do
        runVoid dpkg-query --status $package
        if [ $runVoidError -ne 0 ]; then
            echo -n "installing package <$package> ... "
            sudo DEBIAN_FRONTEND=noninteractive apt install -y $package
            echo "DONE"
        fi
    done
}

function fix_system_lang {
    echo "# fix system language"
    echo "====================="

    if grep -q ^LANG=C.UTF-8 /etc/default/locale; then
        LANG='en_US.UTF-8'
        if gsettings get org.gnome.desktop.input-sources sources | grep -q "'xkb', 'fr"; then
            LANG='fr_FR.UTF-8'
        else
            if gsettings get org.gnome.desktop.input-sources sources | grep -q "'xkb', 'es"; then
                LANG='es_ES.UTF-8'
            fi
        fi

        echo "fix found LANG=$LANG"

        cat << EOF | sudo tee /etc/locale.gen
$LANG UTF-8	
EOF
        sudo locale-gen
        sudo update-locale LANG=$LANG
        xdg-user-dirs-update --force
    else
        echo 'already fixed!'
    fi

    source /etc/default/locale
    export LANG
}

function fix_input_sources {
    echo "# fix input sources containing french variants"
    echo "=============================================="
    if gsettings get org.gnome.desktop.input-sources sources | egrep -q 'fr\+|mozc-jp'; then
        gsettings set org.gnome.desktop.input-sources sources "[('xkb', 'fr')]"
        echo no more french variant found, fixed
    else
        echo no french variant found, ok!
    fi
}

function miaou_bash {
    echo "## miaou-bash"
    echo "=============="
    if ! command -v upgrade-miaou-bash > /dev/null; then
        curl https://git.artcode.re/miaou/miaou-bash/raw/branch/main/install.sh | sudo bash -s
    else
        echo "miaou-bash already installed!"
        upgrade-miaou-bash
    fi
}

function openssh {
    echo "## openssh-server"
    echo "================="

    echo TODO:...
    # PGKNAME='openssh-server'
    # runVoid dpkg-query --status $PGKNAME
    # if [ $runVoidError -ne 0 ]; then
    #     set -e
    #     sudo apt install -y $PGKNAME
    #     sudo /opt/miaou-bash/tools/append_or_replace "^#\?PermitRootLogin.*$" "PermitRootLogin no" /etc/ssh/sshd_config
    #     sudo /opt/miaou-bash/tools/append_or_replace "^#\?PasswordAuthentication.*$" "PasswordAuthentication no" /etc/ssh/sshd_config
    #     sudo /opt/miaou-bash/tools/append_or_replace "^#\?AllowUsers.*$" "AllowUsers $ALLOWED_USERS" /etc/ssh/sshd_config
    #     sudo systemctl restart sshd
    #     set +e
    # else
    #     echo "${PGKNAME} already installed!"
    # fi

}

function faster_grub {
    echo "## grub faster and smarter"
    echo "=========================="
    if grep -q GRUB_TIMEOUT=5 /etc/default/grub; then
        echo "grub was not modified yet, applying changes..."
        sudo /opt/miaou-bash/tools/append_or_replace "^GRUB_TIMEOUT=5$" "GRUB_TIMEOUT=0" /etc/default/grub
        sudo update-grub
        echo OK
    else
        echo changes already done!
    fi
}

function install_firefox {
    echo "## firefox latest"
    echo "================="
    firefox_lang=$(echo $LANG | cut -d. -f1)

    case "$firefox_lang" in
        fr*) firefox_lang=fr ;;
        es*) firefox_lang=es-ES ;;
        *) firefox_lang=en-US ;;
    esac
    echo "$firefox_lang"

    if [[ ! /usr/local/bin/firefox -ef /opt/firefox/firefox ]]; then
        set -e
        cd /tmp

        # https://download-installer.cdn.mozilla.net/pub/firefox/releases/146.0.1/linux-x86_64/en-US/firefox-146.0.1.tar.xz
        firefox_version=$(curl -sI https://www.firefox.com/$firefox_lang/firefox/notes/ | grep location: | cut -d/ -f4)
        firefox_archive_url="https://download-installer.cdn.mozilla.net/pub/firefox/releases/$firefox_version/linux-x86_64/$firefox_lang/firefox-$firefox_version.tar.xz"
        echo $firefox_archive_url

        wget "$firefox_archive_url"
        firefox_archive=${firefox_archive_url##*/}
        sudo mkdir /opt/firefox -p
        sudo chown $USER /opt/firefox
        tar -xf "$firefox_archive" -C /opt
        cat << EOF | sudo tee -a /usr/share/applications/firefox.desktop
[Desktop Entry]
Name=Firefox
Comment=Web Browser
Exec=/opt/firefox/firefox %u
Terminal=false
Type=Application
Icon=/opt/firefox/browser/chrome/icons/default/default128.png
Categories=Network;WebBrowser;
MimeType=text/html;text/xml;application/xhtml+xml;application/xml;application/vnd.mozilla.xul+xml;application/rss+xml;application/rdf+xml;image/gif;image/jpeg;image/png;x-scheme-handler/http;x-scheme-handler/https;
StartupNotify=true
StartupWMClass=Navigator
Actions=new-window;new-private-window;profile-manager;

[Desktop Action new-window]
Name=New Window
Exec=/opt/firefox/firefox --new-window %u

[Desktop Action new-private-window]
Name=New Private Window
Exec=/opt/firefox/firefox --private-window %u

[Desktop Action profile-manager]
Name=Profile Manager
Exec=/opt/firefox/firefox -P %u
EOF
        sudo ln -sf /opt/firefox/firefox /usr/local/bin/firefox
        sudo update-alternatives --install /usr/bin/x-www-browser x-www-browser /opt/firefox/firefox 200 && sudo update-alternatives --set x-www-browser /opt/firefox/firefox
        sudo apt remove -y firefox-esr
        sudo apt install -y libdbus-glib-1-2
        set +e
    else
        echo "firefox latest already installed!"
    fi

    echo "## firefox by default"
    echo "====================="
    xdg-settings set default-web-browser firefox.desktop

}

function gnome_settings {
    echo "## gnome default settings"
    echo "========================="

    gsettings set org.gnome.nautilus.preferences click-policy 'single'
    gsettings set org.gtk.gtk4.Settings.FileChooser sort-directories-first true

    gsettings set org.gnome.mutter dynamic-workspaces false
    gsettings set org.gnome.desktop.wm.preferences num-workspaces 1
    gsettings set org.gnome.desktop.peripherals.touchpad tap-to-click true
}

function tilix_default_terminal {
    local reload=false

    echo "## prevent displaying desktop entries (gnome-terminal replaced by tilix)"
    echo "========================================================================"
    if [[ ! -f ~/.local/share/applications/org.gnome.Terminal.desktop ]]; then
        cat << 'EOF' > ~/.local/share/applications/org.gnome.Terminal.desktop
[Desktop Entry]
NoDisplay=true
EOF
        reload=true
    else
        echo Hidden default terminal in favor of Tilix!
    fi

    echo "## prevent displaying desktop entries (xiterm+thai replaced by tilix)"
    echo "========================================================================"
    if [[ ! -f ~/.local/share/applications/xiterm+thai.desktop ]]; then
        cat << 'EOF' > ~/.local/share/applications/xiterm+thai.desktop
[Desktop Entry]
NoDisplay=true
EOF
        reload=true
    else
        echo Hidden default terminal in favor of Tilix!
    fi

    if [[ ! -f ~/.local/share/applications/com.gexperts.Tilix.desktop ]]; then
        cat << 'EOF' > ~/.local/share/applications/com.gexperts.Tilix.desktop
[Desktop Entry]
Version=1.0
Name=Tilix
Comment[fr]=Un terminal scindable pour GNOME
Comment=A tiling terminal for GNOME
Keywords[fr]=shell;terminal;prompt;commande;ligne de commande;cmd;
Keywords=shell;terminal;prompt;command;commandline;cmd;
Exec=tilix
Terminal=false
Type=Application
StartupNotify=true
Categories=System;TerminalEmulator;X-GNOME-Utilities;
Icon=com.gexperts.Tilix
DBusActivatable=true
Actions=new-window;new-session;preferences;

[Desktop Action new-window]
Name[fr]=Nouvelle fenêtre
Name=New Window
Exec=tilix --action=app-new-window

[Desktop Action new-session]
Name[fr]=Nouvelle session
Name=New Session
Exec=tilix --action=app-new-session

[Desktop Action preferences]
Name[fr]=Préférences
Name=Preferences
Exec=tilix --preferences
EOF
        reload=true
    fi

    [[ $reload ]] && update-desktop-database ~/.local/share/applications

    echo "Tiling Settings"
    gsettings set com.gexperts.Tilix.Settings paste-strip-trailing-whitespace true
    gsettings set com.gexperts.Tilix.Settings focus-follow-mouse true
    gsettings set com.gexperts.Tilix.Settings window-style 'disable-csd-hide-toolbar'
    gsettings set com.gexperts.Tilix.Settings control-click-titlebar true
    gsettings set com.gexperts.Tilix.Settings terminal-title-show-when-single false
    gsettings set com.gexperts.Tilix.Settings warn-vte-config-issue false
    gsettings set com.gexperts.Tilix.Settings theme-variant 'dark'
    gsettings set com.gexperts.Tilix.Settings control-click-titlebar true
}

function no_lock_screen {
    echo "## disable automatic lock screen => use Super_L for LOCK"
    echo "========================================================"
    gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type nothing
    gsettings set org.gnome.desktop.screensaver lock-enabled false
}

function favorite_apps {
    echo "# favourite apps"
    echo "#==============="
    runVoid "gsettings get org.gnome.shell favorite-apps | grep firefox-esr"
    if [[ $runVoidError == 0 ]]; then
        gsettings set org.gnome.shell favorite-apps "['firefox.desktop','org.gnome.Nautilus.desktop','org.gnome.Software.desktop']"
    else
        echo "preserve existing apps!"
    fi
}

function golden_dict {
    echo "## golden dict"
    echo "================"
    if [[ ! -d /usr/share/goldendict/dicts ]]; then
        sudo git clone --depth 1 https://git.artcode.re/non-free/dicts.git /usr/share/goldendict/dicts
    fi
    if [[ ! -f $HOME/.config/goldendict/config ]] || ! grep -q "path.*/usr/share/goldendict/dicts" $HOME/.config/goldendict/config; then
        mkdir -p "$HOME/.config/goldendict/"
        cp "$BASEDIR/lib/goldendict/config" "$HOME/.config/goldendict/"
        nohup goldendict &
    fi
}

function golden_dict_autostart {
    mkdir -p $HOME/.config/autostart
    if [[ ! -f $HOME/.config/autostart/org.goldendict.GoldenDict.desktop ]]; then
        echo -n "autostart GoldenDict ..."
        ln -sf /usr/share/applications/org.goldendict.GoldenDict.desktop $HOME/.config/autostart/
        echo OK
    else
        echo "autostart GoldenDict already installed!"
    fi
}

function gnome_extensions {
    echo "## gnome-shell install several extensions"
    echo "========================================="

    $BASEDIR/tools/gnome-extensions-helper dash-to-dock@micxgx.gmail.com --apply-custom-theme=true --multi-monitor=true --dash-max-icon-size=58 |
        grep -q '^please logout to take effect!' && LOGOUT_REQUIRED=true
    $BASEDIR/tools/gnome-extensions-helper runcat@kolesnikov.se --idle-threshold=66 |
        grep -q 'please logout to take effect!' && LOGOUT_REQUIRED=true
    # $BASEDIR/tools/gnome-extensions-helper netspeedsimplified@prateekmedia.extension |
    # 	grep -q 'please logout to take effect!' && LOGOUT_REQUIRED=true
    $BASEDIR/tools/gnome-extensions-helper appindicatorsupport@rgcjonas.gmail.com --tray-pos=left --icon-saturation=0.9 |
        grep -q 'please logout to take effect!' && LOGOUT_REQUIRED=true
    $BASEDIR/tools/gnome-extensions-helper weeks-start-on-monday@extensions.gnome-shell.fifi.org |
        grep -q 'please logout to take effect!' && LOGOUT_REQUIRED=true

    true
}

function developer_flavor {
    gsettings set org.gnome.shell.extensions.runcat custom-system-monitor-command "xterm -fa Monospace -fs 12 -fullscreen -s htop"
}

function firefox_addons {
    echo "# firefox addons"
    echo "================"
    declare -A FIREFOX_ADDONS
    FIREFOX_ADDONS['uBlock0@raymondhill.net']="3740966/ublock_origin-1.34.0-an+fx.xpi"
    FIREFOX_ADDONS['fr-dicollecte@dictionaries.addons.mozilla.org']='3581786/dictionnaire_francais-7.0b.xpi'
    FIREFOX_ADDONS['chrome-gnome-shell@gnome.org']='898030/gnome_shell_integration-10.1-an+fx-linux.xpi'
    FIREFOX_ADDONS['jid1-ZAdIEUB7XOzOJw@jetpack']='3741831/duckduckgo_privacy_essentials-2021.3.8-an+fx.xpi'

    mkdir -p /opt/firefox/distribution/extensions
    for addon_id in "${!FIREFOX_ADDONS[@]}"; do
        addon_part_url="${FIREFOX_ADDONS[$addon_id]}"
        addon_xpi="/opt/firefox/distribution/extensions/${addon_id}.xpi"
        if [[ ! -f $addon_xpi ]]; then
            echo -n "Firefox addon <$addon_id> installing ..."
            wget -q "https://addons.mozilla.org/firefox/downloads/file/${addon_part_url}" -O $addon_xpi
            echo DONE
        else
            echo "Firefox addon <$addon_id> already installed!"
        fi
    done
}

function firefox_settings {
    echo "# Firefox default settings"
    echo "#========================="

    if [[ ! -f /opt/firefox/firefox.cfg ]]; then
        cat << EOF | sudo tee -a /opt/firefox/firefox.cfg
// IMPORTANT: Start your code on the 2nd line

lockPref("browser.pocket.enabled", false);
lockPref("extensions.pocket.enabled", false);
lockPref("browser.shell.checkDefaultBrowser", false);
EOF
        cat << EOF | sudo tee -a /opt/firefox/defaults/pref/autoconfig.js
pref("general.config.filename", "firefox.cfg");
pref("general.config.obscure_value", 0);
EOF

    else
        echo "Firefox default settings already defined!"
    fi
}

function libre_re_pixmap {
    echo "# libre_re pixmap"
    echo "================="
    if [[ ! -f /usr/share/pixmaps/faces/libre_re.png ]]; then
        sudo curl -o /usr/share/pixmaps/faces/libre_re.png "$GIT_BASE_URL/raw/branch/master/lib/pixmap/libre_re.png"
        dbus-send --system --dest=org.freedesktop.Accounts \
            --type=method_call --print-reply \
            /org/freedesktop/Accounts/User$(id -u) \
            org.freedesktop.Accounts.User.SetIconFile \
            string:"/usr/share/pixmaps/faces/libre_re.png"
    else
        echo "pixmap already copied!"
    fi
}

function clear_system_extensions {
    echo "# clear system gnome-shell extensions"
    echo "====================================="
    [[ ! -d /usr/share/gnome-shell/extensions ]] && sudo mkdir -p /usr/share/gnome-shell/extensions
    count_system_extensions=$(ls -1 /usr/share/gnome-shell/extensions | wc -l)
    [[ $count_system_extensions -gt 0 ]] && sudo rm /usr/share/gnome-shell/extensions/* -rf || true
}

function install_flatpak {
    echo "# install flatpak"
    echo "================="

    if ! dpkg -l flatpak | grep -q ^ii; then
        sudo apt install -y flatpak gnome-software-plugin-flatpak
        sudo flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo

        LOGOUT_REQUIRED=true
        XDG_DATA_DIRS=$HOME/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:$XDG_DATA_DIRS
        export XDG_DATA_DIRS
        flatpak update -y
    fi

    flatpak install -y org.signal.Signal
    flatpak install -y com.mattermost.Desktop
    flatpak install -y net.jami.Jami

}

function final_word_or_logout {
    echo
    if [[ $LOGOUT_REQUIRED == true ]]; then
        echo '# DEBIAN-GNOME new extensions have been installed, please logout/login to apply changes!'
        loginctl terminate-user $(whoami)
    else
        echo "# DEBIAN-GNOME successfully installed!"
    fi
    echo
}

## MAIN
## ---------

[ "$(id -u)" -eq 0 ] && echo 'normal user required' && exit 1

upgrade
apt_required_packages
fix_system_lang
fix_input_sources
miaou_bash
faster_grub
gnome_settings
no_lock_screen
tilix_default_terminal
# openssh
clear_system_extensions
gnome_extensions
install_flatpak
install_firefox
firefox_addons
firefox_settings
golden_dict
# golden_dict_autostart
favorite_apps
libre_re_pixmap
final_word_or_logout