#!/usr/bin/env bash


timestamp() {
  date "+%H:%M:%S.%3N"
}

info(){
  local msg=$1
  echo -e "\e[1;32m===> $(timestamp) ${msg}\e[0m"
}

warn(){
  local msg=$1
  echo -e "\e[1;33m===> $(timestamp) ${msg}\e[0m"
}

fail(){
  local msg=$1
  echo -e "\e[1;31m===> $(timestamp) ERROR: ${msg}\e[0m"
  exit 1
}

dsinit(){
    apt -qq update &> /dev/null

    info "Updating system software..."
    info "This may take a while depending on your connection speed."
    apt -qqy dist-upgrade &> /dev/null


}


install_or_update(){
    local pkg=$1

    present=$(apt list --installed 2> /dev/nul | grep "$pkg" | cut -f1 -d"/")
    if [ "$present" != "$pkg" ]; then
        info "Installing $pkg"
        apt install -qqy $pkg &> /dev/null

        info "Ensuring dependices are installed"
        apt-get -qqf install &> /dev/null
    else
        info "Checking for $pkg updates"
        upgrade_needed=$(apt --just-print upgrade 2> /dev/null | grep "$pkg" | cut -f1 -d"/")
        if [ "$upgrade_needed" == "$pkg" ]; then
            info "Upgrading $pkg"
            apt install -qqy --only-upgrade $pkg &> /dev/null
        else
            info "$1 already on the latest version."
        fi
    fi
}


main(){

    info "Unifi Video installer - 0.1.0"

    dsinit

    info "Ensuring previous installs are complete"
    dpkg --configure -a &> /dev/null

    install_or_update curl

    FILENAME="unifi-video.deb"

    info "Downloading unifi-video installer"
    if ! curl  -fsSL -o $FILENAME https://dl.ubnt.com/firmwares/unifi-video/3.7.2/unifi-video_3.7.2-Ubuntu16.04_amd64.deb; then
        fail "failed to download unifi-video installer"
        exit $?
    fi

    info "Installing unifi-video"
    dpkg -i $FILENAME &> /dev/null

    info "Installing unifi-video deps... This may take a while!"
    apt-get -qqf install &> /dev/null


    info "Install complete!"

    MYIP=$(ifconfig | sed -En 's/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p')
    info "You can view the controller interface here: https://$MYIP:7443/"
}


main