Download and update the newest (Nextcloud) AppImage.

update_appimage.sh

#!/bin/bash
APPNAME="Nextcloud"

# Define the directory where the AppImage is stored
APP_DIR="/home/user/dir"

# Fetch the latest release data from the Github API
# See: https://docs.github.com/en/rest/releases/releases?apiVersion=2022-11-28#get-the-latest-release
# Structure: https://api.github.com/repos/OWNER/REPO/releases/latest

API_URL="https://api.github.com/repos/nextcloud-releases/desktop/releases/latest"


#----------------------------------------------------------------------------------

RELEASE_DATA=$(curl --silent $API_URL)

# Use jq to parse the JSON
APPIMAGE_URL=$(echo $RELEASE_DATA | jq -r ".assets[] | select(.name | test(\"AppImage\")) | .browser_download_url")

if [[ -z "$APPIMAGE_URL" ]]; then
    echo "No release found"
    exit
fi

# Extract the filename
FILENAME=$(basename $APPIMAGE_URL)
APPIMAGE="$APP_DIR/$APPNAME.AppImage"

# Check if the Nextcloud client is currently running
if pgrep $APPNAME; then
  # If it is, kill it
  pkill $APPNAME
  # Give it a moment to fully terminate
  sleep 2
fi

# If an old AppImage exists, delete it
if [ -f "$APPIMAGE" ]; then
  rm $APPIMAGE
fi

echo "Downloading $FILENAME"

# Download the new AppImage
wget -q --show-progress $APPIMAGE_URL -O $APPIMAGE

# Make the new AppImage executable
chmod +x $APPIMAGE

# Run the new AppImage
$APPIMAGE &