#!/usr/bin/env bash
# This script will download, build, and install JRiver Media Center with optional systemd services
# on Fedora, CentOS, Debian, and Ubuntu
#
# To-dos:
#   1. Raspberry Pi support -- do not own one so difficult to test
#   2. Arch support -- would love some testing and PRs
#   3. ncurses graphical installer
shopt -s extglob

installJRMC () {

    ########################
    ####### DEFAULTS #######
    ########################

    _scriptversion="0.1"

    [[ -z "$_boardurl" ]] && \
        _boardurl="https://yabb.jriver.com/interact/index.php/board,64.0.html"

    [[ -z "$_outputdir" ]] && \
        _outputdir="$_basedir/output"

    [[ -z $_createrepo_webroot ]] && \
        _createrepo_webroot="/srv/jriver"

    [[ -z $_createrepo_user ]] && \
        _createrepo_user="$(whoami)"

    [[ -z $_user ]] && \
        _user="$(whoami)"

    [[ -z $_display ]] && \
        _display="${DISPLAY:-":0"}"

    ########################
    ###### FUNCTIONS #######
    ########################

    _printHelpAndExit () {

        _runDebug "${FUNCNAME[0]}"

        cat <<-'EOF'
USAGE:
    installJRMC [[OPTION] [VALUE]]...

OPTIONS
        --rpmbuild
            Debian/Ubuntu: Build RPM from source DEB
            Fedora/CentOS: Build RPM from source DEB and install it
        --outputdir PATH
            Generate rpmbuild output in this directory (Default: $PWD/outputdir)
        --mcversion VERSION
            Build or install a specific version (Default: scrape the latest version from Interact)
        --restorefile RESTOREFILE
            Restore file location for registration (Default: skip registration)
        --betapass PASSWORD
            Enter beta team password for access to beta builds
        --service SERVICE
            See SERVICES section below for a list of possible service to install
        -v|--version
            Print this script version and exit
        -d|--debug
            Enter debug mode
        -h|--help
            Print help dialog and exit
        -u|--uninstall
            Uninstall JRiver MC, cleanup service files, and remove firewall rules (does not remove
            library files)

    CREATEREPO
        --createrepo
            Build rpm, copy to webroot, and run createrepo

            --createrepo-webroot PATH
                The webroot directory to install the repo (Default: /srv/jriver/)
            --createrepo-user USER
                The web server user (Default: current user)

    SERVICES
        mediaserver
            Create and enable a JRiver MC Media Server systemd service for the current user

        x11vnc-mediaserver
            Create and enable a JRiver MC mediaserver service and x11vnc (for headless
            installations without an existing X server) service for the current user

            --vncpass PASSWORD
                Set vnc password for x11vnc access. If no password is set, the script will either use
                existing password stored in ~/.vnc/jrmc_passwd or use no password
            --display DISPLAY
                Start X11VNC on this display (Default: The current display or :0 if current display is
                unaccessible)

        createrepo
            Install service to build latest MC RPM and run createrepo hourly for the current user
EOF

        # Exit using passed exit code
        [[ -z $1 ]] && exit 0 || exit "$1"
    }


    _parseInput () {

        _runDebug "${FUNCNAME[0]}"

        if _input=$(getopt -o +vdhu -l rpmbuild,outputdir:,mcversion:,restorefile:,betapass:,service:,version,debug,help,uninstall,createrepo,createrepo-webroot:,createrepo-user:,vncpass:,display: -- "$@"); then
            eval set -- "$_input"
            while true; do
                case "$1" in
                    --rpmbuild)
                        _rpmbuild="true"
                        ;;
                    --outputdir)
                        shift && _outputdir="$1"
                        ;;
                    --mcversion)
                        shift && _mcversion="$1"
                        ;;
                    --restorefile)
                        shift && _restorefile="$1"
                        ;;
                    --betapass)
                        shift && _betapass="$1"
                        ;;
                    --service)
                        shift && _service="$1"
                        ;;
                    --version|-v)
                        echo "Version: $_scriptversion"
                        exit 0
                        ;;
                    --debug|-d)
                        echo "Debugging on"
                        _debug="true"
                        ;;
                    --help|-h)
                        _printHelpAndExit 0
                        ;;
                    --uninstall|-u)
                        _uninstall="true"
                        ;;
                    --createrepo)
                        _createrepo="true"
                        ;;
                    --createrepo-webroot)
                        shift && _createrepo_webroot="$1"
                        ;;
                    --createrepo-user)
                        shift && _createrepo_user="$1"
                        ;;
                    --vncpass)
                        shift && _vncpass="$1"
                        ;;
                    --display)
                        shift && _display="$1"
                        ;;
                    --)
                        shift
                        break
                        ;;
                esac
                shift
            done
        else
            echo "Incorrect options provided"
            _printHelpAndExit 1
        fi
    }


    _runDebug () {

        [[ -n $_debug ]] && echo "Running: " "$@"
    }


    _checkUser () {

        _runDebug "${FUNCNAME[0]}"

        if [[ "$_user" == "root" ]]; then

            cat <<EOF
Warning! You are currently running installJRMC as the root user. This is not recommended! When
running as a regular user, installJRMC will ask you for your sudo password when necessary.

Installation will continue but any systemd services will be installed as system services and you
may run into permissions issues.
EOF
        else
            [[ -n $_debug ]] && echo "Installing as user: $_user"
        fi
    }


    _getOS () {

        _runDebug "${FUNCNAME[0]}"

        if [[ -e /etc/os-release ]]; then
            source /etc/os-release
        else
            echo "No /etc/os-release found!"
            echo "Your OS is unsupported"
            _printHelpAndExit 1
        fi

        [[ -n $_debug ]] && echo "Platform: $ID $VERSION_ID"
    }


    _buildCommands () {

        _runDebug "${FUNCNAME[0]}"

        # build some basic command arrays based on OS and user input
        if [[ "$ID" =~ ^(fedora|centos)$ ]]; then
            _install_cmd=("dnf" "install" "-y")
            _update_cmd=("dnf" "makecache" "-y")
            _pkg_query_cmd=("rpm" "-q")
            _firewall_cmd=("firewall-cmd")
        elif [[ "$ID" =~ ^(ubuntu|debian)$ ]]; then
            _install_cmd=("apt-get" "install" "-y")
            _update_cmd=("apt-get" "update" "-y")
            _pkg_query_cmd=("dpkg" "-l")
            _firewall_cmd=("ufw")
        fi

        _bash_cmd=("bash" "-c")
        _rm_cmd=("rm" "-rf")

        _install_cmd_nogpg=("${_install_cmd[@]}" "--nogpgcheck")

        # append sudo for non-root users
        if [[ "$_user" != "root" ]]; then
            _install_cmd=("sudo" "${_install_cmd[@]}")
            _install_cmd_nogpg=("sudo" "${_install_cmd_nogpg[@]}")
            _update_cmd=("sudo" "${_update_cmd[@]}")
            _bash_cmd=("sudo" "${_bash_cmd[@]}")
            _bash_cmd=("sudo" "${_rm_cmd[@]}")
            _firewall_cmd=("sudo" "${_firewall_cmd[@]}")
            #_pkg_query_cmd=("sudo" "${_pkg_query_cmd[@]}")
        fi

        [[ -n $_debug ]] && \
            echo "Install command: " "${_install_cmd[@]}" && \
            echo "Update command: " "${_update_cmd[@]}" && \
            echo "Bash command: " "${_bash_cmd[@]}" && \
            echo "Package query command: " "${_pkg_query_cmd[@]}"
    }


    _installPackage () {

        _runDebug "${FUNCNAME[0]}" "$@"

        # We will add packages to this array if their command is not available
        local -a _pkg_array
        local -a _url_pkg_array

        # parse commands
        for _pkg in "$@"; do
            # Clean up package name and handle OS-specific tweaks
            _packageQuirks "$_pkg"
            # Insert the package name to test if already installed
            if [[ "$_pkg" != "" ]] && ! "${_pkg_query_cmd[@]}" "$_pkg" > /dev/null 2>&1; then
                if [[ -n $_url_pkg ]]; then
                    _url_pkg_array+=("$_url_pkg")
                else
                    _pkg_array+=("$_pkg")
                fi
            fi
        done

        if [[ ${#_pkg_array[@]} -ge 1 ]]; then
            echo "Installing: " "${_pkg_array[@]}"
            "${_install_cmd[@]}" "${_pkg_array[@]}" > /dev/null 2>&1
        fi

        if [[ ${#_url_pkg_array[@]} -ge 1 ]]; then
            echo "Installing: " "${_url_pkg_array[@]}"
            "${_install_cmd_nogpg[@]}" "${_url_pkg_array[@]}" > /dev/null 2>&1
        fi
    }


    _packageQuirks () {

        _runDebug "${FUNCNAME[0]}" "$@"

        unset _url_pkg

        if [[ "$1" == "rpm-build" && "$ID" =~ ^(ubuntu|debian)$ ]]; then
            _pkg="rpm"
        elif [[ "$1" == "createrepo_c" && "$ID" =~ ^(ubuntu|debian)$ ]]; then
            _pkg="createrepo"
        elif [[ "$1" == "rpmfusion-free-release" ]]; then
            if [[ "$ID" == "fedora" ]]; then
                _url_pkg="https://download1.rpmfusion.org/free/$ID/rpmfusion-free-release-$VERSION_ID.noarch.rpm"
                _pkg="$1"
            elif [[ "$ID" == "centos" ]]; then
                _url_pkg="https://download1.rpmfusion.org/free/el/rpmfusion-free-release-$VERSION_ID.noarch.rpm"
                _pkg="$1"
            else
                _pkg=""
            fi
        elif [[ "$1" == "epel-release" && "$ID" != "centos" ]]; then
            _pkg=""
        else
            _pkg="$1"
        fi
    }


    _setVersion () {

        _runDebug "${FUNCNAME[0]}"

        if [[ -z "$_mcversion" ]]; then

            _installPackage wget

            # Get latest version from Interact
            echo -n "Scraping latest MC version number from Interact..."
            if ! _mcversion=$(wget -qO- "$_boardurl" | grep -o "[0-9][0-9]\.[0-9]\.[0-9]\+" | head -n 1); then
                echo "MC version could not be scraped. Please specify a version manually using --mcversion or check your --boardurl"
            fi
        fi

        if [[ "$_mcversion" =~ ^[0-9]+.[0-9].[0-9]+ ]]; then
            echo "$_mcversion"
        else
            echo "MC version: $_mcversion could not be parsed!"
            _printHelpAndExit 1
        fi

        # Extract major and variation version numbers
        _mversion="${_mcversion%%.*}"
        #_variation="${_mcversion##*.}"
    }

    _sanityChecks () {

        _runDebug "${FUNCNAME[0]}"

        # Cannot create a repo without an rpm
        if [[ -n $_createrepo || "$_service" == "createrepo" ]]; then
            _rpmbuild="true"
        fi

        # Check for bad service name
        if [[ -n $_service && ! "$_service" =~ ^(mediaserver|x11vnc-mediaserver|createrepo)$ ]]; then
            echo "Incorrect service type provided!"
            _printHelpAndExit 1
        fi
    }


    _installExternalRepos () {

        _runDebug "${FUNCNAME[0]}"

        _installPackage rpmfusion-free-release epel-release
    }


    _installRepo () {

        _runDebug "${FUNCNAME[0]}"

        _installPackage wget gnupg

        if [[ "$ID" =~ ^(fedora|centos)$ ]]; then
            "${_bash_cmd[@]}" 'cat <<-EOF > /etc/yum.repos.d/jriver.repo
[jriver]
name=JRiver Media Center repo by BryanC
baseurl=https://repos.bryanroessler.com/jriver
gpgcheck=0
EOF'
            [[ -n $_debug ]] && cat /etc/yum.repos.d/jriver.repo
            echo "Installing latest JRiver Media Center from repo..."
            if "${_update_cmd[@]}" && "${_install_cmd[@]}" MediaCenter > /dev/null 2>&1; then
                echo "JRiver Media Center installed successfully!"
                echo "You can check for future MC updates by running \"sudo dnf update\""
            else
                echo "JRiver Media Center installation failed!"
                _printHelpAndExit 1
            fi

        elif [[ "$ID" =~ ^(ubuntu|debian)$ ]]; then
            if [[ $_user != "root" ]]; then
                wget -q "http://dist.jriver.com/mediacenter@jriver.com.gpg.key" -O- | sudo apt-key add - > /dev/null 2>&1
                sudo wget "http://dist.jriver.com/latest/mediacenter/mediacenter$_mversion.list" -O "/etc/apt/sources.list.d/jriver.list" > /dev/null 2>&1
            else
                wget -q "http://dist.jriver.com/mediacenter@jriver.com.gpg.key" -O- | apt-key add - > /dev/null 2>&1
                wget "http://dist.jriver.com/latest/mediacenter/mediacenter$_mversion.list" -O "/etc/apt/sources.list.d/jriver.list" > /dev/null 2>&1
            fi

            [[ -n $_debug ]] && cat "/etc/apt/sources.list.d/jriver.list"
            echo "Installing JRiver Media Center from repo..."
            if "${_update_cmd[@]}" > /dev/null 2>&1 && "${_install_cmd[@]}" "mediacenter$_mversion" > /dev/null 2>&1; then
                echo "JRiver Media Center installed successfully!"
                echo "You can check for future MC updates by running \"apt-get update && apt-get dist-upgrade\""
            else
                echo "JRiver Media Center installation failed!"
                _printHelpAndExit 1
            fi
        fi

    }


    _acquireDeb () {

        _runDebug "${FUNCNAME[0]}"

        # If necessary, create SOURCES dir
        [[ ! -d "$_outputdir/SOURCES" ]] && mkdir -p "$_outputdir/SOURCES"

        # If deb file already exists, skip download
        if [[ -f "$_outputdir/SOURCES/MediaCenter-${_mcversion}-amd64.deb" ]]; then
            echo "Using local DEB file: $_outputdir/SOURCES/MediaCenter-${_mcversion}-amd64.deb"
        # Else check beta repo
        elif [[ -n $_betapass ]]; then
            if wget -q -O "$_outputdir/SOURCES/MediaCenter-${_mcversion}-amd64.deb" \
            "https://files.jriver.com/mediacenter/channels/v${_mversion}/beta/${_betapass}/MediaCenter-${_mcversion}-amd64.deb"; then
                true
            fi
        # Else check test repo
        elif wget -q -O "$_outputdir/SOURCES/MediaCenter-${_mcversion}-amd64.deb" \
        "https://files.jriver.com/mediacenter/test/MediaCenter-${_mcversion}-amd64.deb"; then
            true
        # Else check latest repo
        elif wget -q -O "$_outputdir/SOURCES/MediaCenter-${_mcversion}-amd64.deb" \
        "https://files.jriver.com/mediacenter/channels/v${_mversion}/latest/MediaCenter-${_mcversion}-amd64.deb"; then
            true
        else
            echo "Cannot find DEB file. Exiting..." && exit 1
        fi

        if [[ ! -f "$_outputdir/SOURCES/MediaCenter-${_mcversion}-amd64.deb" ]]; then
            echo "Downloaded DEB file missing or corrupted, exiting..."
            exit 1
        fi
    }



    _buildRPM () {

        _runDebug "${FUNCNAME[0]}"

        # install build dependencies
        _installPackage wget dpkg rpm-build

        # If necessary, make build directories
        [[ ! -d "$_outputdir/SPECS" ]] && mkdir -p "$_outputdir/SPECS"

        # rpmbuild uses rpm to check for build dependencies
        # this will fail on non-rpm distros
        if [[ "$ID" =~ ^(fedora|centos)$ ]]; then
            _build_requires=$'BuildRequires: rpm >= 4.11.0\nBuildRequires: dpkg'
        else
            _build_requires=''
        fi

        if [[ "$ID" == "centos" ]]; then
            _requires='Requires: pangox-compat >= 0.0.2'
        else
            _requires=''
        fi



        # Create spec file
        bash -c "cat <<EOF > $_outputdir/SPECS/mediacenter.spec
Name:    MediaCenter
Version: $_mcversion
Release: 1
Summary: JRiver Media Center
Group:   Applications/Media
Source0: http://files.jriver.com/mediacenter/channels/v$_mversion/latest/MediaCenter-$_mcversion-amd64.deb
$_build_requires
BuildArch: x86_64
%define _rpmfilename %%{ARCH}/%%{NAME}-%%{version}.%%{ARCH}.rpm

AutoReq:  0
Requires: glibc >= 2.19
Requires: alsa-lib >= 1.0.28
Requires: libuuid >= 2.25
Requires: libX11 >= 1.6
Requires: libX11-common >= 1.6
Requires: libXext >= 1.3
Requires: libxcb >= 1.1
Requires: libXdmcp >= 1.1
Requires: libstdc++ >= 4.9
Requires: gtk3 >= 3.14
Requires: mesa-libGL
Requires: libglvnd-glx
Requires: pango >= 1.36
$_requires
Requires: xdg-utils
Requires: libgomp >= 4.9
Requires: gstreamer1 >= 1.4.4
Requires: gstreamer1-plugins-base >= 1.4.4
Requires: nss >= 3.26
Requires: nspr >= 4.12
Requires: ca-certificates
Requires: python3
Recommends: vorbis-tools >= 1.4.0

Provides: mediacenter$_mversion

License: Copyright 1998-2020, JRiver, Inc.  All rights reserved.  Protected by U.S. patents #7076468 and #7062468
URL: http://www.jriver.com/

%description
Media Center is more than a world class player.

%global __os_install_post %{nil}
%prep

%build

%install
dpkg -x %{S:0} %{buildroot}

%post -p /sbin/ldconfig
%postun -p /sbin/ldconfig

%files
%{_bindir}/mediacenter$_mversion
%{_libdir}/jriver
%{_datadir}
/etc/security/limits.d/*
EOF"

        # skip rebuilding the rpm if it already exists
        if [[ -f "$_outputdir/RPMS/x86_64/MediaCenter-$_mcversion.x86_64.rpm" ]]; then
            echo "$_outputdir/RPMS/x86_64/MediaCenter-$_mcversion.x86_64.rpm already exists! Skipping build step..."
        else
            # Run rpmbuild
            echo "Building version $_mcversion, please wait..."
            if rpmbuild --quiet --define="%_topdir $_outputdir" --define="%_libdir /usr/lib" -bb "$_outputdir/SPECS/mediacenter.spec"; then
                echo "Build complete!"
                echo "The RPM is located at $_outputdir/RPMS/x86_64/MediaCenter-$_mcversion.x86_64.rpm"
            else
                echo "Build failed! Exiting..."
                exit 1
            fi
        fi
    }


    _runCreateRepo () {

        _runDebug "${FUNCNAME[0]}"

        _installPackage createrepo_c

        unset _prefix
        if [[ $_createrepo_user != "root" ]]; then
            _prefix=("sudo" "-u" "$_createrepo_user")
        fi

        _createrepo_cmd=("createrepo" "-q")

        # If the webroot does not exist, create it
        if [[ ! -d "$_createrepo_webroot" ]]; then
            if ! "${_prefix[@]}" mkdir -p "$_createrepo_webroot"; then
                echo "Could not create the createrepo-webroot path!"
                echo "Make sure that the createrepo-webroot is writeable by createrepo-user!"
            fi
        fi

        # Copy built rpms to webroot
        if "${_prefix[@]}" cp -n "$_outputdir/RPMS/x86_64/MediaCenter-$_mcversion.x86_64.rpm" "$_createrepo_webroot"; then
            echo "Copied $_outputdir/RPMS/x86_64/MediaCenter-$_mcversion.x86_64.rpm to $_createrepo_webroot/MediaCenter-$_mcversion.x86_64.rpm"
        else
            echo "Could not copy the RPM to the createrepo-webroot path!"
            echo "Make sure that the createrepo-webroot path is writeable by createrepo-user!"
        fi

        # If repodata exists, append --update to createrepo command
        [[ -d "$_createrepo_webroot/repodata" ]] && _createrepo_cmd+=("--update")

        # Run createrepo
        if "${_prefix[@]}" "${_createrepo_cmd[@]}" "$_createrepo_webroot"; then
            echo "Successfully updated repo!"
        else
            echo "Update repo failed!"
            return 1
        fi
    }


    _installRPM () {

        _runDebug "${FUNCNAME[0]}"

        # skip installing same version
        _installed_ver="$(rpm --query MediaCenter)"
        _to_be_installed_ver="MediaCenter-$_mcversion.x86_64"
        if [[ $_installed_ver == "$_to_be_installed_ver" ]]; then
            echo "JRiver Media Center $_mcversion is already installed! Skipping installation..."
            return
        fi

        # install rpm
        if [[ -f "$_outputdir/RPMS/x86_64/MediaCenter-$_mcversion.x86_64.rpm" ]]; then
            echo "Attempting to install version $_mcversion..."
            if "${_install_cmd[@]}" "$_outputdir/RPMS/x86_64/MediaCenter-$_mcversion.x86_64.rpm"; then
                echo "JRiver Media Center $_mcversion was installed successfully!"
            else
                echo "JRiver Media Center $_mcversion installation failed!"
                exit 1
            fi
        else
            echo "$_outputdir/RPMS/x86_64/MediaCenter-${_mcversion}.x86_64.rpm is missing!"
            echo "JRiver Media Center ${_mcversion} installation failed!"
            exit 1
        fi
    }


    _symlinkCerts () {

        _runDebug "${FUNCNAME[0]}"

        if [[ ! -f /etc/ssl/certs/ca-certificates.crt && \
        -f /etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem ]]; then
            echo "Symlinking /etc/ssl/certs/ca-certificates.crt to /etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem"
            if [[ "$_user" == "root" ]]; then
                ln -s /etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem /etc/ssl/certs/ca-certificates.crt
            else
                sudo ln -s /etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem /etc/ssl/certs/ca-certificates.crt
            fi
        fi
    }


    _restoreLicense () {

        _runDebug "${FUNCNAME[0]}"

        # Allow user to drop an mjr file next to installJRMC
        if [[ -z $_restorefile ]]; then
            for _mjr in "$_basedir"/*.mjr; do
              [[ $_mjr -nt $_restorefile ]] && _restorefile="$_mjr"
            done
        fi

        # Restore license
        if [[ -f "$_restorefile" ]]; then
            if ! "mediacenter${_mversion}" /RestoreFromFile "$_restorefile"; then
                echo "Automatic license restore failed"
            fi
        fi
    }


    _openFirewall () {

        _runDebug "${FUNCNAME[0]}"

        # RHEL
        if [[ "$ID" =~ ^(fedora|centos)$ ]] && [[ -x $(command -v firewall-cmd) ]]; then
            if ! firewall-cmd --get-services | grep -q jriver; then
                # shellcheck disable=SC2140,SC1079,SC1078
                "${_firewall_cmd[@]}" --permanent --new-service=jriver > /dev/null 2>&1
                "${_firewall_cmd[@]}" --permanent --service=jriver --set-description="JRiver Media Center Media Server" > /dev/null 2>&1
                "${_firewall_cmd[@]}" --permanent --service=jriver --set-short="jriver" > /dev/null 2>&1
                "${_firewall_cmd[@]}" --permanent --service=jriver --add-port=52100-52200/tcp > /dev/null 2>&1
                "${_firewall_cmd[@]}" --permanent --service=jriver --add-port=1900/udp > /dev/null 2>&1
                "${_firewall_cmd[@]}" --reload > /dev/null 2>&1
            fi

        # Ubuntu
        elif [[ "$ID" =~ ^(ubuntu|debian)$ ]] && [[ -x $(command -v ufw) ]]; then
            if [[ ! -f "/etc/ufw/applications.d/jriver.service" ]]; then
                "${_bash_cmd[@]}" "cat <<-EOF > /etc/ufw/applications.d/jriver.service
[jriver]
title=JRiver Media Center
description=Allows JRiver Media Server access
ports=52100:52200/tcp|1900/udp
EOF"
            fi

            "${_firewall_cmd[@]}" allow jriver > /dev/null 2>&1
        fi
    }


    _setVNCPass () {

        _runDebug "${FUNCNAME[0]}"

        _vncpassfile="$HOME/.vnc/jrmc_passwd"

        if [[ -n $_vncpass ]]; then
            # Remove existing password file if it exists and write a new one
            [[ -f "$_vncpassfile" ]] && rm -f "$_vncpassfile"
            x11vnc -storepasswd "$_vncpass" "$_vncpassfile"
        # Else disable authentication
        elif [[ ! -f "$_vncpassfile" ]]; then
            _novncauth="true"
        fi
    }


    _systemctlReloadAndEnable () {

        _runDebug "${FUNCNAME[0]}"

        echo "Enabling $1"

        if [[ "$_user" == "root" ]]; then
            systemctl daemon-reload
            systemctl enable --now "$1" > /dev/null 2>&1
        else
            sudo systemctl daemon-reload
            sudo systemctl enable --now "$1" > /dev/null 2>&1
        fi
    }


    _generateServiceVars () {

        _runDebug "${FUNCNAME[0]}"

        unset _service_fname _service_name _timer_fname _timer_name _user_specifier

        if [[ "$_user" == "root" ]]; then
            _service_fname="/usr/lib/systemd/system/$1.service"
            _timer_fname="/usr/lib/systemd/system/$1.timer"
            _service_name="$1.service"
            _timer_name="$1.timer"
            _user_specifier=""
        else
            _service_fname="/usr/lib/systemd/system/$1@.service"
            _timer_fname="/usr/lib/systemd/system/$1@.timer"
            _service_name="$1@$_user.service"
            _timer_name="$1@$_user.timer"
            _user_specifier="User=%I"
        fi
    }


    _serviceMediaserver () {

        _runDebug "${FUNCNAME[0]}"

        _generateServiceVars "jriver-mediaserver"

        "${_bash_cmd[@]}" "cat <<-EOF > $_service_fname
[Unit]
Description=JRiver Media Center $_mversion Media Server
After=graphical.target

[Service]
$_user_specifier
Type=simple
Environment=DISPLAY=$_display
ExecStart=/usr/bin/mediacenter$_mversion /MediaServer
Restart=always
RestartSec=10
KillSignal=SIGHUP
TimeoutStopSec=30

[Install]
WantedBy=graphical.target
EOF"
        _systemctlReloadAndEnable "$_service_name"
    }


    _serviceX11VNC () {

        _runDebug "${FUNCNAME[0]}"

        _installPackage x11vnc
        _setVNCPass

        _generateServiceVars "jriver-x11vnc"

        if [[ "$_novncauth" == "true" ]]; then
            _exec_start_cmd="/usr/bin/x11vnc -display $_display -noscr -geometry 1920x1080 -auth guess -forever -bg -nopw"
        else
            _exec_start_cmd="/usr/bin/x11vnc -display $_display -noscr -geometry 1920x1080 -rfbauth $HOME/.vnc/jrmc_passwd -auth guess -forever -bg"
        fi

        "${_bash_cmd[@]}" "cat <<-EOF > $_service_fname
[Unit]
Description=x11vnc
After=display-manager.service

[Service]
$_user_specifier
Type=forking
Environment=DISPLAY=$_display
ExecStart=$_exec_start_cmd
Restart=always
RestartSec=10

[Install]
WantedBy=default.target
EOF"
        _systemctlReloadAndEnable "$_service_name"
    }


    _serviceCreaterepo () {

        _runDebug "${FUNCNAME[0]}"

        _generateServiceVars "jriver-createrepo"

        "${_bash_cmd[@]}" "cat <<-EOF > $_service_fname
[Unit]
Description=Builds JRiver Media Center RPM file, moves it to the repo dir, and runs createrepo

[Service]
$_user_specifier
ExecStart=$_basedir/installJRMC --outputdir $_outputdir --createrepo --createrepo-webroot $_createrepo_webroot --createrepo-user $_createrepo_user

[Install]
WantedBy=default.target
EOF"
        "${_bash_cmd[@]}" "cat <<-EOF > $_timer_fname
[Unit]
Description=Run JRiver MC rpmbuild hourly

[Timer]
OnCalendar=hourly
Persistent=true

[Install]
WantedBy=timers.target
EOF"
        _systemctlReloadAndEnable "$_timer_name"
    }


    _uninstall () {

        _runDebug "${FUNCNAME[0]}"

        read -r -p "Do you really want to uninstall all JRiver Media Center files? [y/N] " _response
        _response=${_response,,}    # tolower
        [[ ! "$_response" =~ ^(yes|y)$ ]] && echo "Cancelling uninstall..." && exit 0
        echo "Stopping and disabling all Media Center services"
        sudo systemctl disable --now jriver-createrepo.timer jriver-x11vnc.service jriver-mediaserver.service
        echo "Removing repo and service files"
        for _service in "jriver-mediaserver" "jriver-x11vnc" "jriver-createrepo"; do
            _generateServiceVars _service
            [[ -f "$_service_fname" ]] && "${_rm_cmd[@]}" "$_service_fname"
            [[ -f "$_timer_fname" ]] && "${_rm_cmd[@]}" "$_timer_fname"
        done
        [[ -f "/etc/yum.repos.d/jriver.repo" ]] \
            && "${_rm_cmd[@]}" "/etc/yum.repos.d/jriver.repo"
        [[ -f "/etc/apt/sources.list.d/jriver.list" ]] \
            && "${_rm_cmd[@]}" "/etc/apt/sources.list.d/jriver.list"
        if [[ -x $(command -v firewall-cmd) ]]; then
            echo "Removing firewall rules"
            sudo firewall-cmd --permanent --remove-service=jriver > /dev/null 2>&1
            sudo firewall-cmd --permanent --delete-service=jriver > /dev/null 2>&1
            sudo firewall-cmd --reload > /dev/null 2>&1
        elif [[ -x $(command -v ufw) ]]; then
            echo "Removing firewall rules"
            sudo ufw delete allow jriver  > /dev/null 2>&1
            [[ -f "/etc/ufw/applications.d/jriver.service" ]] \
                && "${_rm_cmd[@]}" /etc/ufw/applications.d/jriver.service
        fi
        echo "Uninstalling Media Center"
        if [[ "$ID" =~ ^(fedora|centos)$ ]]; then
            sudo dnf remove MediaCenter -y
        elif [[ "$ID" =~ ^(ubuntu|debian)$ ]]; then
            sudo apt-get remove "mediacenter$_mversion" -y
        fi
        echo "JRiver Media Center has been completely uninstalled"
        echo "Your library files will remain at $HOME/.jriver"
    }


    __main () {

        # Check user
        _checkUser

        # Parse input
        _parseInput "$@"

        # Detect OS
        _getOS

        # Build some commands based on the selected OS
        _buildCommands

        # Set version to install/uninstall
        _setVersion

        # Sanity checks
        _sanityChecks

        # Uninstall and exit
        if [[ -n $_uninstall ]]; then
            _uninstall
            return $?
        fi

        # Install external repos
        _installExternalRepos

        echo "RPMBUILD: " $_rpmbuild

        # install MC using package manager (default)
        if [[ -z $_rpmbuild ]]; then
            _installRepo
            _symlinkCerts
            _restoreLicense
            _openFirewall
        else
            _acquireDeb
            _buildRPM
            if [[ -n $_createrepo ]]; then
                _runCreateRepo
            # Go ahead and install MC from RPM if on a supported platform
            elif [[ "$ID" =~ ^(fedora|centos)$ ]]; then
                _installRPM
                _symlinkCerts
                _restoreLicense
                _openFirewall
            fi
        fi

        # Install systemd services
        if [[ "$_service" == "createrepo" ]]; then
            _serviceCreaterepo
        elif [[ "$_service" == "x11vnc-mediaserver" ]]; then
            _serviceMediaserver
            _serviceX11VNC
        elif [[ "$_service" == "mediaserver"  ]]; then
            _serviceMediaserver
        fi
    }

    # Execute main function when called
    __main "$@"
}

# Allow this file to be executed directly if not being sourced
if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
    _basedir=$(dirname "$(readlink -f "$0")")
    installJRMC "$@"
fi