install.sh

#!/bin/bash

# Set posix mode
set -o posix;

# Check if script is ran as root
if [ "$USER" != 'root' ];then
    echo "This script must be ran as root...";
    exit 1;
fi

# Define export directory
exp_dir=/home/$SUDO_USER/Documents/Notes/;

# Define install directory
install_dir=/bin;

# Define GenReport library directory
lib_dir=/lib/GenReport;

# Define help_doc directory
help_dir=/usr/share;

# Define Redis config dir (To check that Redis is installed)
redis_dir=/etc/redis;

# TODO: Add a check for a Redis Installation
# GenReport Installer
function install_genreport() {
    echo "### Cehcking for Redis ###";
    if [ ! -d "$redis_dir" ]; then
        echo "Redis is not installed you will need to install Redis on your distribution for gen-report to work.";
        while true; do
            read -p "Do you want to continue with installation? (Y, N)" c_yn;
            case $c_yn in
                [Yy]*) break;;
                [Nn]*) echo "Aborting Install..." ; exit;;
                * ) echo "Please answer Yes or No";;
            esac
        done
    fi
    echo "### Starting Install ###";
    
    # Create lib directory if it does NOT exist
    if [ ! -d "$lib_dir" ]; then
        sleep 0.5;
        
        if (! mkdir --verbose --parents "$lib_dir") then
            echo "Couldn't create $lib_dir";
            exit 1;
        fi
    fi
    
    if [ ! -d "$exp_dir" ]; then
        sleep 0.5;
        
        # Create Export directory
        if (! mkdir --verbose --parents "$exp_dir") then
            echo "Problem creating directory $exp_dir";
            exit 1;
        fi

        # Set write permission to the expoort directory
        if ! chown --verbose "$SUDO_USER" "$exp_dir"; then
            echo "There was a problem setting the propper permissions in $exp_dir";
            echo "Make sure you are running this script as root with sudo...";
            exit 1;
        fi
    fi
    
    # Install GenReport Library
    sleep 0.5;
    if ! cp --recursive --force --verbose ./lib/* $lib_dir; then
        echo "There was a problem copying ./lib to $lib_dir";
        exit 1;
    fi
    
    # Install test library
    sleep 0.5
    if ! cp --recursive --force --verbose ./test "$lib_dir"; then
        echo "There was a problem installing the test library...";
        exit 1;
    fi
    
    # Install help doc
    sleep 0.5;
    if ! cp --force --verbose ./help_doc.txt "$help_dir"; then
        echo "There was a problem copying ./help_doc.txt to $help_dir";
        exit 1;
    fi
    
    # Install GenReport
    sleep 0.5;
    if ! cp --recursive --force --verbose ./gen-report "$install_dir"; then
        echo "There was a problem copying ./gen-report to $install_dir";
        exit 1;
    fi
    
    return 0;
}

# GenReport Uninstaller
function uninstall_genreport() {
    echo "### Starting Uninstall ###";

    # Check if GenReport is even installed
    if [ ! -f /bin/gen-report ]; then
        echo "GenReport not found, Nothing to do...";
        exit 1;
    fi
    
    # Remove export directory
    sleep 0.5;
    if ! rm --recursive --force --recursive --force --verbose "$exp_dir"; then
        echo "There was a problem removing $exp_dir";
        exit 1;
    fi
    
    # Remove libraries
    sleep 0.5;
    if ! rm --recursive --force --recursive --force --verbose "$lib_dir"; then
        echo "There was a problem removing $lib_dir/GenReport";
        exit 1;
    fi
    
    # Remove test library
    
    # Remove gen-report
    sleep 0.5;
    if ! rm --force --verbose "$install_dir/gen-report"; then
        echo "There was a problem removing $install_dir/gen-report";
        exit 1;
    fi
    
    # Remove help_doc
    sleep 0.5;
    if ! rm --force --verbose "$help_dir"/help_doc.txt; then
        echo "Couldn't remove $help_dir/help_doc.txt";
        exit 1;
    fi
    
    return 0;
}

case $1 in
    '--uninstall')
        if ! uninstall_genreport; then
            # Exit in failure
            echo "Uninstallation Failed...";
            exit 1;
        fi
        
        # Exit sucessfully
        echo "Uninstallation Sucessful!!";
        exit 0;
    ;;
    '--reinstall')
        # Run the uninstall
        if ! uninstall_genreport; then
            echo "Re-install failed at uninstalling genreport...";
            exit 1
        fi

        # Run the install
        if ! install_genreport; then
            echo "Re-install failed at installing genreport...";
            exit 1
        fi

        echo "Re-installation Sucessful!!";
    ;;
    '-h' | '--help')
        echo "Run [sudo ./install.sh] to install GenReport.";
        echo "Run [sudo ./install.sh --uninstall] to uninstall GenReport";
        echo "Run [sudo ./install.sh --reinstall] to re-install GenReport";
        exit 0;
    ;;
    '' | ' ') # This is because often times a space can be added when pasting, so I covered all the bases
        if ! install_genreport; then
            echo "Installation Failed...";
            exit 1;
        fi
        
        echo "Installation Sucessful!!"
        exit 0;
    ;;
    *)
        echo "Run [sudo ./install.sh] to install GenReport.";
        echo "Run [sudo ./install.sh --uninstall] to uninstall GenReport";
    ;;
esac