Adding automated update to weather

weather/weather

@@ -1,10 +1,12 @@
-#!/bin/sh
+#!/bin/bash
 # Author: Alexander Epstein https://github.com/alexanderepstein
 
+currentVersion="1.0.0" #This version variable should not have a v but should contain all other characters ex Github release tag is v1.2.4 currentVersion is 1.2.4
+
 getWeather()
 {
   country=$(curl -s ipinfo.io/country) > /dev/null ## grab the country
-  if [ $country = "US" ];then ## if were in the us id rather not use longitude and latitude so the output is nicer
+  if [[ $country == "US" ]];then ## if were in the us id rather not use longitude and latitude so the output is nicer
     city=$(curl -s ipinfo.io/city) > /dev/null
     region=$(curl -s ipinfo.io/region) > /dev/null
     region=$(echo "$region" | tr -dc '[:upper:]')
@@ -26,5 +28,75 @@ checkInternet()
   fi
 }
 
+update()
+{
+  # Author: Alexander Epstein https://github.com/alexanderepstein
+  # Update utility version 1.2.0
+  # To test the tool enter in the defualt values that are in the examples for each variable
+  repositoryName="Bash-Snippets" #Name of repostiory to be updated ex. Sandman-Lite
+  githubUserName="alexanderepstein" #username that hosts the repostiory ex. alexanderepstein
+  nameOfInstallFile="install.sh" # change this if the installer file has a different name be sure to include file extension if there is one
+  latestVersion=$(curl -s https://api.github.com/repos/$githubUserName/$repositoryName/tags | grep -Eo '"name":.*?[^\\]",'| head -1 | grep -Eo "[0-9.]+" ) #always grabs the tag without the v option
+
+  if [[ $currentVersion == "" || $repositoryName == "" || $githubUserName == "" || $nameOfInstallFile == "" ]];then
+    echo "Error: update utility has not been configured correctly." >&2
+    exit 1
+  elif [[ $latestVersion == "" ]];then
+    echo "Error: no active internet connection" >&2
+    exit 1
+  else
+    if [[ "$latestVersion" != "$currentVersion" ]]; then
+      echo "Version $latestVersion available"
+      echo -n "Do you wish to update $repositoryName [Y/n]: "
+      read -r answer
+      if [[ "$answer" == "Y" || "$answer" == "y" ]] ;then
+        cd  ~ || { echo 'Update Failed' ; exit 1 ; }
+        if [[ -d  ~/$repositoryName ]]; then rm -r $repositoryName  || { echo "Your password is required to continue with the update" ; sudo rm -r $repositoryName ; }; fi #sudo command only on error
+        git clone "https://github.com/$githubUserName/$repositoryName" || { echo "Couldn't download latest version" ; exit 1; }
+        cd $repositoryName ||  { echo 'Update Failed' ; exit 1 ;}
+        git checkout "v$latestVersion" 2> /dev/null || git checkout "$latestVersion" 2> /dev/null || echo "Couldn't git checkout to stable release, updating to latest commit."
+        chmod a+x install.sh #this might be necessary in your case but wasnt in mine.
+        "./$nameOfInstallFile update" || { echo "Your password is required to continue with the update" ; "sudo ./$nameOfInstallFile update" ; }
+        cd ..
+        rm -r $repositoryName || sudo rm -r $repositoryName #sudo command only on error
+      else
+        exit 1
+      fi
+    else
+      echo "$repositoryName is already the latest version"
+    fi
+  fi
+
+}
+
 checkInternet || exit 1 # check if we have a valid internet connection if this isnt true the rest of the script will not work so stop here
+
+if [[ $# == 0 ]]; then
 getWeather
+elif [[ $1 == "update" ]]; then
+update
+fi
+
+
+while getopts ":uv:" opt; do
+  case $opt in
+    \?)
+      echo "Invalid option: -$OPTARG" >&2
+      exit 1
+      ;;
+    h)
+      help
+    ;;
+    v)
+      echo "Version $currentVersion"
+    ;;
+    u)
+      update
+      exit 1;
+    ;;
+    :)
+      echo "Option -$OPTARG requires an argument." >&2
+      exit 1
+      ;;
+  esac
+done