#!/bin/bash
DIRECTORY="$(readlink -f "$(dirname "$0")")"

function error {
  echo -e "\e[91m$1\e[39m"
  exit 1
}

[ -z "$(yad --help)" ] && error "YAD needs to be installed to run pi-apps."

#check for updates in background
("${DIRECTORY}/updater" 1>/dev/null) &

(if [ ! -f ~/.config/autostart/pi-apps-updater.desktop ];then
  "${DIRECTORY}/install"
fi) &

#refresh settings if analytics file missing
(if [ ! -f "${DIRECTORY}/data/settings/Enable analytics" ];then
  "${DIRECTORY}/settings" refresh
fi) &

#Variable 1 is used to view the details of the specified app
if [ ! -z "$1" ];then
  output="$1"
fi

install() {
  x-terminal-emulator --title="Installing $app" -e '
    bash -c '\''
    PATH="'"$PATH"'"
    if "'"${DIRECTORY}/manage"'" install "'"$app"'" ; then
      echo -e "\nClosing in 30 seconds."
      sleep 30
    else
      echo -e "\nClose this window to exit."
      read enter #technically you could press Enter to exit.
    fi
    '\''
    '
  sleep 1
  while ps -C manage &>/dev/null;do sleep 0.1; done
}

uninstall() {
  x-terminal-emulator --title="Uninstalling $app" -e '
    bash -c '\''
    PATH="'"$PATH"'"
    if "'"${DIRECTORY}/manage"'" uninstall "'"$app"'" ; then
      echo -e "\nClosing in 30 seconds."
      sleep 30
    else
      echo -e "\nClose this window to exit."
      read enter #technically you could press Enter to exit.
    fi
    '\''
    '
  sleep 1
  while ps -C manage &>/dev/null;do sleep 0.1; done
}

while true;do
  LIST="$("${DIRECTORY}/preload")"
  #LIST="$(cat "${DIRECTORY}/data/preload/LIST")"
  #echo "$LIST"
  
  motd="$(wget -qO- https://raw.githubusercontent.com/Botspot/pi-apps-announcements/main/message)"
  
  #if output is not empty then assume button pressed was Details
  button=0
  
  while [ -z "$output" ];do
    
    output="$(echo -e "$LIST" | yad --center --title='Pi-Apps' --width=310 --height=400 --no-headers \
      --text="$motd" --image="${DIRECTORY}/icons/logo-64.png" --image-on-top \
      --list --separator='\n' --window-icon="${DIRECTORY}/icons/logo.png" \
      --column=:IMG --column=:IMG --column=Name --column=tip:HD --print-column=3 --tooltip-column=4 \
      --button=Install!"${DIRECTORY}/icons/install.png":4 \
      --button=Uninstall!"${DIRECTORY}/icons/uninstall.png":2 \
      --button=Details!"${DIRECTORY}/icons/info.png"!'View more about the selected software:0' \
      )"
    
    button=$? #get exit code to determine which button was pressed
    echo "Button: ${button}"
    if [ $button -eq 252 ];then #if window manager x was pressed
      exit 0
    fi
    
    echo "Output: ${output}EOO"
    
    if [ -z "$output" ];then
      echo "output variable empty!"
      yad --center --title='Pi-Apps' --width=310 \
        --window-icon="${DIRECTORY}/icons/logo.png" \
        --text="Mind reading is not supported.
  (You didn"\'"t select an App)" \
        --button=OK:0
    fi
  done
  
  case $button in

    1)
      echo "User exited."
      exit 0
      ;;
    0)
      echo "Details"
      
      if [ ! -z "$(cat "${DIRECTORY}/data/installed-packages/${output}")" ];then
        installedpackages="
This app installed these packages: $(cat "${DIRECTORY}/data/installed-packages/${output}" | sort | uniq | tr '\n' ' ')"
      else
        installedpackages=''
      fi
      
      description="$(cat "${DIRECTORY}/apps/${output}/description" || echo 'Description unavailable')"
      
      text="$(echo "$(cat "${DIRECTORY}/apps/${output}/description" || echo "Description unavailable")" | head -n1)
Current status: $(cat "${DIRECTORY}/data/status/${output}" || echo 'Uninstalled')
Website: $(cat "${DIRECTORY}/apps/${output}/website" || echo 'unavailable')
$(echo "$description" | grep -v "$(echo "$description" | head -n1)")
$installedpackages"
      
      #if already installed then no need to provide install button. And vice versa.
      whichbutton="$(
      if [ "$(cat "${DIRECTORY}/data/settings/Show Edit button")" == 'Yes' ];then
        echo "--button=Edit!${DIRECTORY}/icons/edit.png:10"
      fi
      if [ ! -f "${DIRECTORY}/data/status/${output}" ];then
        #Taking a chance here. If status file is nonexistent, assume uninstalled.
        echo "--button=Install!${DIRECTORY}/icons/install.png:4"
      elif [ "$(cat "${DIRECTORY}/data/status/${output}")" == 'installed' ];then
        echo "--button=Uninstall!${DIRECTORY}/icons/uninstall.png:2"
      elif [ "$(cat "${DIRECTORY}/data/status/${output}")" == 'uninstalled' ];then
        echo "--button=Install!${DIRECTORY}/icons/install.png:4"
      else
        #if status is corrupted or unknown, then show both buttons
        echo "--button=Uninstall!${DIRECTORY}/icons/uninstall.png:2 --button=Install!${DIRECTORY}/icons/install.png:4"
      fi
      )"
      
      echo "$text" | yad --text-info --fontname=12 --wrap --show-uri \
        --image="${DIRECTORY}/apps/${output}/icon-64.png" --image-on-top \
        --title="Details of ${output}" --window-icon="${DIRECTORY}/icons/logo.png" --center --width=700 --height=300 \
        $whichbutton \
        --button=''!"${DIRECTORY}/icons/up.png"!'View previous App':6 \
        --button=''!"${DIRECTORY}/icons/down.png"!'View next App':8 \
        --button=Back!"${DIRECTORY}/icons/back.png":0
      button=$? #get exit code to determine which button was pressed
      echo "Button: ${button}"
      
      if [ $button == 0 ];then
        echo 'Back' #do nothing, as user requested to go back
        #clear app var
        output=''
      elif [ $button == 4 ];then
        app="$output"
        install
      elif [ $button == 2 ];then
        app="$output"
        uninstall
      elif [ $button == 6 ];then
        echo 'previous app'
        
        #convert $output into number, then subtract 1 from it
        
        lsoutput="$(echo "$(ls "${DIRECTORY}/apps")" | grep -vxE "$(cat "${DIRECTORY}/data/hidelist" | tr '\n' '|')")"
        
        number="$(echo "$lsoutput" | grep -nx "$output" | cut -f1 -d: )"
        
        lastline="$(echo "$lsoutput" | wc -l)"
        
        if [ $(($number - 1)) -lt '1' ];then
          newnumber=$lastline
        else
          newnumber=$(($number - 1))
        fi
        
        output="$(echo "$lsoutput" | sed -n "${newnumber}p")"
        
        echo "Line number was ${number}, but now is ${newnumber}. Name is ${output}."
        
      elif [ $button == 8 ];then
        echo 'next app'
        
        #convert $output into number, then add 1 to it
        
        lsoutput="$(echo "$(ls "${DIRECTORY}/apps")" | grep -vxE "$(cat "${DIRECTORY}/data/hidelist" | tr '\n' '|')")"
        
        number="$(echo "$lsoutput" | grep -nx "$output" | cut -f1 -d: )"
        
        echo "Line number was ${number}, but now is ${newnumber}. Name is ${output}."
        
        lastline="$(echo "$lsoutput" | wc -l)"
        
        if [ $(($number + 1)) -gt $lastline ];then
          newnumber=1
        else
          newnumber=$(($number + 1))
        fi
        
        output="$(echo "$lsoutput" | sed -n "${newnumber}p")"
        
        echo "Line number was ${number}, but now is ${newnumber}. Name is ${output}."
      elif [ $button == 10 ];then
        echo "edit $output"
        "${DIRECTORY}/createapp" "$output"
      else
        echo 'unknown button. Exiting now.'
        exit 0
      fi
      ;;
    2)
      app="$output"
      uninstall
      #clear output var to prompt main window to open next
      output=''
      ;;
    4)
      app="$output"
      install
      #clear output var to prompt main window to open next
      output=''
      ;;
    *)
    error "Unknown button: $button"
    ;;
  esac
done