#!/bin/bash

# HELIUM BOWSER AUTO UPDATE SCRIPT WITH LOGGING

## VARIABLES & TMP FOLDER
mkdir -p /tmp/Helium
TMP=/tmp/Helium
INSTALL_PATH=$HOME/.apps/Helium
LOG=$INSTALL_PATH/updateLog
DEPENDENCIES=("curl" "wget")
MISSING=$(cat $TMP/missingDeps 2>/dev/null)
GIT_VERSION=$(curl -s https://api.github.com/repos/imputnet/helium-linux/releases/latest | grep "tag_name" | tr -d \", | awk '{print $2}')
LOCAL_VERSION=$($INSTALL_PATH/helium-browser.AppImage --version | awk '{print $2}')
DATE=$(date)

## CHECKS
if ! [ -d "$INSTALL_PATH" ] ; then
    mkdir -p $INSTALL_PATH
    echo "${DATE}  |  Failed to update - Helium installation path not present - But created for logging" >> $LOG
    exit 1
    
elif ! [ -f "$INSTALL_PATH/helium-browser.AppImage" ] ; then
    echo "${DATE}  |  Failed to update - Local Helium AppImage not found" >> $LOG
    exit 1 
    
else    
    :

fi

### SCRIPT DEPENDENCIES
dependency_check() { 
    local PACKAGE="$1"

    if command -v "$PACKAGE" >/dev/null 2>&1 ; then
        :

    else
        echo "$PACKAGE" >>$TMP/missingDeps

    fi
}

for PACKAGE in "${DEPENDENCIES[@]}" ; do
    dependency_check "$PACKAGE"

done

if ! [ "$MISSING" ] ; then
    :

else
    echo "${DATE}  |  Failed to update - missing dependencies : $MISSING" >> $LOG
    exit 1

fi

## COMPARE VERSIONS
update_helium() {
    GIT_URL=$(curl -s https://api.github.com/repos/imputnet/helium-linux/releases/latest | grep "browser_download_url" | grep "x86_64.AppImage" | grep -v "zsync" | tr -d \" | awk '{print $2}')
    GIT_FILENAME=$(curl -s https://api.github.com/repos/imputnet/helium-linux/releases/latest | grep "browser_download_url" | grep "x86_64.AppImage" | grep -v "zsync" | tr -d \" | awk '{print $2}' | awk -F'/' '{print $9}')
    wget -P $TMP $GIT_URL -q
    chmod +x $TMP/$GIT_FILENAME
    rm $INSTALL_PATH/helium-browser.OldAppImage >/dev/null 2>&1
    mv $INSTALL_PATH/helium-browser.AppImage $INSTALL_PATH/helium-browser.OldAppImage >/dev/null 2>&1
    mv $TMP/$GIT_FILENAME $INSTALL_PATH/helium-browser.AppImage
    echo "${DATE}  |  Helium updated to ${GIT_VERSION}" >> $LOG
}

### CHECK FOR EMPTY VERSION TAGS
if [[ -z "$GIT_VERSION" ]] ; then
    echo "${DATE}  |  Failed to update - Emty version tag --> GIT" >> $LOG
    exit 1

elif [[ -z "$LOCAL_VERSION" ]] ; then
    echo "${DATE}  |  Failed to update - Emty version tag --> LOCAL" >> $LOG
    exit 1

else
    :

fi

if [[ "$GIT_VERSION" == "$LOCAL_VERSION" ]] ; then
    :

else
    update_helium
    
fi

rm -rf $TMP

exit 0