#!/bin/zsh

# Copyright (c) 2024 Proton AG
#
# This file is part of Proton Mail Bridge.
#
# Proton Mail Bridge is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Proton Mail Bridge is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.

# remove_bridge is a script for quitting, uninstalling, and deleted all Bridge related files on macOS, and Linux distros.

# Colours for prettying up the terminal output
NC='\033[0m'
GREEN='\033[0;32m'
RED='\033[0;31m'

# Variables with path to Bridge files (vault, cache, etc)
BRIDGE_PROCESS=bridge-gui
MAC_BRIDGE_APP_NAME=(Proton\ Mail\ Bridge.app)
MAC_SUPPORT_PROTONMAIL=~/Library/Application\ Support/protonmail
MAC_CACHE_PROTONMAIL=~/Library/Caches/protonmail
MAC_CACHE_PROTON=~/Library/Caches/Proton\ AG
MAC_BRIDGE_CREDS_V2="Proton Mail Bridge"
MAC_BRIDGE_CREDS_V3="Proton Mail Bridge-V3"
MAC_LAUNCH_AGENTS=~/Library/LaunchAgents/Proton\ Mail\ Bridge.plist
LINUX_CACHE_PROTON=~/.cache/Proton\ AG
LINUX_CACHE_PROTONMAIL=~/.cache/protonmail
LINUX_CONFIG_PROTONMAIL=~/.config/protonmail
LINUX_LOCAL_PROTONMAIL=~/.local/share/protonmail
LINUX_BRIDGE_USER_INFO=~/.config/protonmail/bridge/cache/c11/user_info.json
LINUX_STARTUP_ENTRY=~/.config/autostart/Proton\ Mail\ Bridge.desktop


quit_bridge() {
# Quit a running Bridge
    pkill $BRIDGE_PROCESS

}


uninstall_bridge() {
# Uninstall Bridge

    if [[ "$OSTYPE" == "darwin"* ]]; then

        rm -rf /Applications/"${MAC_BRIDGE_APP_NAME[@]}"

    elif [[ "$OSTYPE" == "linux-gnu"* ]]; then

        if [ -f "/usr/bin/apt-get" ]; then

            sudo dpkg -P protonmail-bridge

        elif [ -f "/bin/dnf" ]; then

            sudo dnf remove -y protonmail-bridge

        fi

    else
    
        echo -e "${RED}Unknown operating system!{$NC}"

    fi

}


get_user_info() {
# Get the UserID from `user_info.json` file to be used when
# Deleting keychain entries from `gnome-keyring`

    result=( $(cat $LINUX_BRIDGE_USER_INFO | jq -r '. | keys[]') )

}


delete_credentials() {

    if [[ "$OSTYPE" == "darwin"* ]]; then

        while security delete-generic-password -s "${MAC_BRIDGE_CREDS_V2}" >/dev/null
        do
            true;
        done

        security delete-generic-password -s "${MAC_BRIDGE_CREDS_V3}"
    
    elif [[ "$OSTYPE" == "linux-gnu"* ]]; then

        if [[ $(which gnome-keyring | grep 'gnome-keyring') ]]; then

            secret-tool clear username bridge-vault-key

            get_user_info

            for value in "${result[@]}"; do

                secret-tool clear username "$value"

            done

        fi

        if [[ $(which pass | grep 'pass') ]]; then

            pass remove -rf protonmail-credentials
        
        fi

    else
    
        echo -e "${RED}Unknown operating system!{$NC}"
    
    fi

}


delete_resource_folders() {

    if [[ "$OSTYPE" == "darwin"* ]]; then
    
        rm -rf $MAC_SUPPORT_PROTONMAIL
        rm -rf $MAC_CACHE_PROTONMAIL
        rm -rf $MAC_CACHE_PROTON
        rm $MAC_LAUNCH_AGENTS
    
    elif [[ "$OSTYPE" == "linux-gnu"* ]]; then
    
        rm -rf $LINUX_CACHE_PROTON
        rm -rf $LINUX_CACHE_PROTONMAIL
        rm -rf $LINUX_CONFIG_PROTONMAIL
        rm -rf $LINUX_LOCAL_PROTONMAIL
        rm -rf $LINUX_STARTUP_ENTRY

    else
    
        echo -e "${RED}Unknown operating system!{$NC}"

    fi

}


check_resource_folders() {

    FOLDER_EXISTS=false

    if [[ "$OSTYPE" == "darwin"* ]]; then
    
        if [ -d "$MAC_SUPPORT_PROTONMAIL" ]; then

            echo -e "\n${RED}$MAC_SUPPORT_PROTONMAIL still exists!${NC}"
            FOLDER_EXISTS=true
        
        fi

        if [ -d "$MAC_CACHE_PROTONMAIL" ]; then
        
            echo -e "\n${RED}$MAC_CACHE_PROTONMAIL still exists!${NC}"
            FOLDER_EXISTS=true
        
        fi

        if [ -d "$MAC_CACHE_PROTON" ]; then

            echo -e "\n${RED}$MAC_CACHE_PROTON still exists!${NC}"
            FOLDER_EXISTS=true
        
        fi

        if [ -f "$MAC_LAUNCH_AGENTS" ]; then

            echo -e "\n${RED}$MAC_LAUNCH_AGENTS still exists!${NC}"
            FOLDER_EXISTS=true
        
        fi

        if [ "$FOLDER_EXISTS" = true ]; then

            echo -e "\n${RED}Some directories were not deleted properly!${NC}\n"

        else

            echo -e "\n${GREEN}All Bridge resource folders deleted!${NC}\n"
        
        fi
    
    elif [[ "$OSTYPE" == "linux-gnu"* ]]; then

        if [ -d "$LINUX_CACHE_PROTON" ]; then

            echo -e "\n${RED}$LINUX_CACHE_PROTON still exists!${NC}"
            FOLDER_EXISTS=true
        
        fi

        if [ -d "$LINUX_CACHE_PROTONMAIL" ]; then
        
            echo -e "\n${RED}$LINUX_CACHE_PROTONMAIL still exists!${NC}"
            FOLDER_EXISTS=true
        
        fi

        if [ -d "$LINUX_CONFIG_PROTONMAIL" ]; then

            echo -e "\n${RED}$LINUX_CONFIG_PROTONMAIL still exists!${NC}"
            FOLDER_EXISTS=true
        
        fi

        if [ -d "$LINUX_LOCAL_PROTONMAIL" ]; then

            echo -e "\n${RED}$LINUX_LOCAL_PROTONMAIL still exists!${NC}"
            FOLDER_EXISTS=true
        
        fi

        if [ -f "$LINUX_STARTUP_ENTRY" ]; then

            echo -e "\n${RED}$LINUX_STARTUP_ENTRY still exists!${NC}"
            FOLDER_EXISTS=true

        fi

        if [ "$FOLDER_EXISTS" = true ]; then

            echo -e "\n${RED}Some directories were not deleted properly!${NC}\n"

        else

            echo -e "\n${GREEN}All Bridge resource folders deleted!${NC}\n"
        
        fi
    
    else
    
        echo -e "${RED}Unknown operating system!{$NC}"

    fi

}


execute_script() {

    echo -e "\n${GREEN}Quitting and uninstalling Bridge!${NC}\n"
    quit_bridge
    delete_credentials
    uninstall_bridge
    delete_resource_folders
    check_resource_folders

}


execute_script