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

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

#start on this step:
#step=1
#name=myapp

#you can specify a preexisting app with variable 1
if [ ! -z "$1" ];then
  name="$1"
  step=2
else
  name=''
  step=1
fi

while true;do
  case $step in
    1)
      echo "Welcome to the Create App wizard!
With a few simple steps, your project can take advantage of Pi-Apps"\'" features and be displayed in the application list." | yad --text-info --fontname=12 --wrap --show-uri \
        --image="${DIRECTORY}/icons/in-progress.png" --image-on-top \
        --title="Create App Wizard" --window-icon="${DIRECTORY}/icons/logo.png" --center --width=310 --height=300 \
        --button=Cancel!"${DIRECTORY}/icons/exit.png":1 \
        --button=Next!"${DIRECTORY}/icons/forward.png":0 || exit 0
      step=2
      ;;
    2)
      
      if [ ! -z "$name" ];then
        namelocked='yes'
        echo 'name field is already filled. Making it read-only.'
      fi
      
      if [ -f "${DIRECTORY}/apps/$name/icon-64.png" ];then
        echo "icon already exists. Making icon field read-only."
        iconfield="--field=Icon::RO apps/$name/icon-64.png"
      else
        echo 'icon does not exist.'
        iconfield="--field=Icon::FL $HOME"
      fi
      
      output="$(yad --form \
        --title="Create App: Step $step" --window-icon="${DIRECTORY}/icons/logo.png" --center --width=310 --height=300 \
        --text="Step ${step}: enter some information. The name field is mandatory." \
        --field="Name of app:$([ ! -z "$namelocked" ]&&echo ':RO')"  "$name" \
        --field="Website:" "$(cat "${DIRECTORY}/apps/${name}/website")" \
        $iconfield \
        --field="Description:":TXT "$(cat "${DIRECTORY}/apps/${name}/description" || echo 'Short description on this first line. This will be the tooltip.
Be sure to mention HOW TO RUN this app, both from the menu and from a terminal.
Describe how to use this app, and any outstanding features it has.
Here'\''s a bulletpoint if you need it: ∙ <- '\('ツ'\)'
And yes, the happy face above will be just fine when you erase him. Don'\''t worry.')" \
        --button=Previous!"${DIRECTORY}/icons/back.png":2 \
        --button=Next!"${DIRECTORY}/icons/forward.png":0 \
        2>/dev/null)"
      button=$? #get exit code to determine which button was pressed
      
      echo "$button"
      
      output="$(echo "$output" | tr '|' '\n' )"
      
      if [ $button == 0 ];then
        #next
        name="$(echo "$output" | sed -n '1p')"
        website="$(echo "$output" | sed -n '2p')"
        icon="$(echo "$output" | sed -n '3p')"
        description="$(echo -e "$(echo "$output" | sed -n '4p')")"
        #name field must be populated
        if [ ! -z "$name" ];then
          #check if name is a duplicate
          if [ -z "$(ls "${DIRECTORY}/apps" | grep -x "$name")" ] || [ ! -z $namelocked ];then
            #create app folder
            mkdir -p "${DIRECTORY}/apps/${name}" || error "failed to create ${DIRECTORY}/apps/${name}!"
            namelocked='yes'
            
            #if website field is populated
            if [ ! -z "$website" ];then
              echo "$website" > "${DIRECTORY}/apps/${name}/website"
              echo "Created ${DIRECTORY}/apps/${name}/website"
            fi
            
            #if icon field is populated and if file exists
            if [ ! -z "$icon" ] && [ -f "$icon" ];then
              #scale it to 24x24
              convert "$(echo "$output" | sed -n '3p')" -resize 24x24 "${DIRECTORY}/apps/${name}/icon-24.png"
              echo "Created ${DIRECTORY}/apps/${name}/icon-24.png"
              #scale it to 64x64
              convert "$(echo "$output" | sed -n '3p')" -resize x64 "${DIRECTORY}/apps/${name}/icon-64.png"
              echo "Created ${DIRECTORY}/apps/${name}/icon-64.png"
            fi
            
            #if description field is populated
            if [ ! -z "$description" ];then
              echo "$description" > "${DIRECTORY}/apps/${name}/description"
              echo "Created ${DIRECTORY}/apps/${name}/description"
            fi
            
            step=3
          else
            echo 'That app name already exists!'
            yad --title="Error" --window-icon="${DIRECTORY}/icons/logo.png" --center \
            --text="That app name already exists!" --timeout=10 \
            --button=OK:0
          fi
        else
          echo 'Name of app may not be left blank!'
          yad --title="Error" --window-icon="${DIRECTORY}/icons/logo.png" --center \
            --text="Name of app may not be left blank!" --timeout=10 \
            --button=OK:0
        fi
      elif [ $button == 2 ];then
        #previous - don't save changes
        step=1
      else
        #like clicking the X or something 
        exit 0
      fi
      ;;
    3)
      cp -rn "${DIRECTORY}/apps/template/." "${DIRECTORY}/apps/${name}"
      
      #find the best text editor
      if [ -f /usr/bin/geany ];then
        geany "${DIRECTORY}/apps/${name}/install" &
      elif [ -f /usr/bin/mousepad ];then
        mousepad "${DIRECTORY}/apps/${name}/install" &
      elif [ -f /usr/bin/leafpad ];then
        leafpad "${DIRECTORY}/apps/${name}/install" &
      elif [ -f /bin/nano ];then
        lxterminal --title=Nano -e "nano ${DIRECTORY}/apps/${name}/install" &
      else
        echo "No text editors found!"
      fi
      
      output="$(yad --form --on-top \
        --title="Create App: Step $step" --window-icon="${DIRECTORY}/icons/logo.png" --center --width=310 --height=300 \
        --text='Now it'\''s time to make your install script. This will be executed anytime somebody clicks the Install button.
A text editor should have openened and you can create your install script.' \
        --field="Run script":FBTN "lxterminal --title="\""Running install script of $name"\"" -e "\""cd $HOME;${DIRECTORY}/apps/${name}/install;echo 'Closing in 10 seconds.';sleep 10"\" \
        --field="Shellcheck"!!'Having problems? This utility helps you locate syntax errors.':FBTN "lxterminal --title="\""Shellcheck"\"" -e "\""sudo apt install -y shellcheck && shellcheck ${DIRECTORY}/apps/${name}/uninstall;echo 'Press Enter to exit.';read enter"\" \
        --button=Previous!"${DIRECTORY}/icons/back.png":2 \
        --button=Next!"${DIRECTORY}/icons/forward.png":0 \
        2>/dev/null)"
      button=$? #get exit code to determine which button was pressed
      
      if [ $button == 0 ];then
        #next - save changes
        step=4
      elif [ $button == 2 ];then
        #previous - save changes
        step=2
      else
        #like clicking the X or something 
        exit 0
      fi
      ;;
    4)
      cp -rn "${DIRECTORY}/apps/template/." "${DIRECTORY}/apps/${name}"
      
      #find the best text editor
      if [ -f /usr/bin/geany ];then
        geany "${DIRECTORY}/apps/${name}/uninstall" &
      elif [ -f /usr/bin/mousepad ];then
        mousepad "${DIRECTORY}/apps/${name}/uninstall" &
      elif [ -f /usr/bin/leafpad ];then
        leafpad "${DIRECTORY}/apps/${name}/uninstall" &
      elif [ -f /bin/nano ];then
        lxterminal --title=Nano -e "nano ${DIRECTORY}/apps/${name}/uninstall" &
      else
        echo "No text editors found!"
      fi
      
      output="$(yad --form --on-top \
        --title="Create App: Step $step" --window-icon="${DIRECTORY}/icons/logo.png" --center --width=310 --height=300 \
        --text='Now it'\''s time to make your uninstall script. This will be executed anytime somebody clicks the Uninstall button.
A text editor should have openened... Never mind, you know what to do.' \
        --field="Run script":FBTN "lxterminal --title="\""Running uninstall script of $name"\"" -e "\""cd $HOME;${DIRECTORY}/apps/${name}/uninstall;echo 'Closing in 10 seconds.';sleep 10"\" \
        --field="Shellcheck"!!'Having problems? This utility helps you locate syntax errors.':FBTN "lxterminal --title="\""Shellcheck"\"" -e "\""sudo apt install -y shellcheck && shellcheck ${DIRECTORY}/apps/${name}/uninstall;echo 'Press Enter to exit.';read enter"\" \
        --button=Previous!"${DIRECTORY}/icons/back.png":2 \
        --button=Next!"${DIRECTORY}/icons/forward.png":0 \
        2>/dev/null)"
      button=$? #get exit code to determine which button was pressed
      
      if [ $button == 0 ];then
        step=5
      elif [ $button == 2 ];then
        step=3
      else
        #like clicking the X or something 
        exit 0
      fi
      ;;
    5)
      LIST="${DIRECTORY}/icons/uninstalled.png
${DIRECTORY}/apps/${name}/icon-24.png
$name
"\("uninstalled"\)" $(echo "$(cat "${DIRECTORY}/apps/${name}/description" || echo "Description unavailable")" | head -n1)"
      
      echo -e "$LIST" | yad --list \
        --title="Create App: Step $step" --window-icon="${DIRECTORY}/icons/logo.png" --center --width=310 --height=300 \
        --text='Make sure everything looks right.
Here'\''s what it will look like in the app list:' \
        --column=:IMG --column=:IMG --column=Name --column=tip:HD --tooltip-column=4 --no-headers \
        --button=Previous!"${DIRECTORY}/icons/back.png":2 \
        --button=Next!"${DIRECTORY}/icons/forward.png":0 \
        2>/dev/null
      button=$? #get exit code to determine which button was pressed
      
      if [ $button == 0 ];then
        step=6
      elif [ $button == 2 ];then
        step=4
      else
        #like clicking the X or something 
        exit 0
      fi
      ;;
    6)
           
      text="$(echo "$(cat "${DIRECTORY}/apps/${name}/description" || echo "Description unavailable")" | head -n1)
Current status: uninstalled
Website: $(cat "${DIRECTORY}/apps/${name}/website" || echo "unavailable")
$(echo "$(cat "${DIRECTORY}/apps/${name}/description" || echo "Description unavailable")" | grep -v "$(echo "$(cat "${DIRECTORY}/apps/${name}/description" || echo "Description unavailable")" | head -n1)")"
      
      echo "$text" | yad --text-info --fontname=12 --wrap --show-uri \
        --title="Create App: Step $step" --window-icon="${DIRECTORY}/icons/logo.png" --center --width=700 --height=300 \
        --text='Make sure everything looks right.
Here'\''s a preview of the Details window:' \
        --image="${DIRECTORY}/apps/${name}/icon-64.png" --image-on-top \
        --button=Previous!"${DIRECTORY}/icons/back.png":2 \
        --button=Next!"${DIRECTORY}/icons/forward.png":0 \
        2>/dev/null
      button=$? #get exit code to determine which button was pressed
      
      if [ $button == 0 ];then
        step=7
      elif [ $button == 2 ];then
        step=5
      else
        #like clicking the X or something 
        exit 0
      fi
      ;;
    7)
      echo "Done!
You app is located at ${DIRECTORY}/apps/${name}
To add your app to the Pi-Apps official repository, just open an issue for Botspot (the developer or Pi-Apps): https://github.com/Botspot/pi-apps/issues/new" | yad --text-info --fontname=12 --wrap --show-uri \
        --image="${DIRECTORY}/icons/in-progress.png" --image-on-top \
        --title="Create App Wizard" --window-icon="${DIRECTORY}/icons/logo.png" --center --width=310 --height=300 \
        --button=Previous!"${DIRECTORY}/icons/back.png":0 \
        --button=Close!"${DIRECTORY}/icons/exit.png":1 || exit 0
      step=6
      ;;
    *)
      error "Unknown step ${step}!"
      ;;
  esac
done