Fix update checker (#13)

update-check.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+set -ex
+
+IS_PULL_REQUEST=$1
+
+
+check_version() {
+    DIR=$1
+    CURR_VERSION=$2
+
+    echo "Checking version for ${DIR}"
+
+    VERSION=`cat ${DIR}/VERSION`
+
+    if [[ -z $CURR_VERSION ]]; then
+        echo "Failed to get new version. Existing."
+        exit 1
+    fi
+
+    if [[ $VERSION != $CURR_VERSION ]]; then
+        echo "New release found: ${CURR_VERSION}"
+
+        if [[ $IS_PULL_REQUEST == "true" ]]; then
+            echo "Action triggered by pull request. Do not bump version."
+        else
+            # bump up to new release
+            echo ${CURR_VERSION} > ${DIR}/VERSION
+
+            # commit
+            git config --local user.email "actions@github.com"
+            git config --local user.name "Github Action"
+            git add ${DIR}/VERSION
+            git commit -m "Bump ${DIR} version to ${CURR_VERSION}" --author="Xiaonan Shen <s@sxn.dev>"
+            git push
+        fi
+    else
+        echo "Already newest version ${VERSION}"
+    fi
+
+}
+
+
+JSON_CONTENT=$(curl -q https://protonmail.com/download/current_version_linux.json)
+URL=$(echo ${JSON_CONTENT} | sed -n "s/^.*\"DebFile\":\"\([a-z0-9:/._-]*\)\".*$/\1/p")
+CURR_VERSION=$(echo $URL | sed -n "s/https:\/\/protonmail.com\/.*_\([0-9.-]*\)_.*.deb/\1/p")
+check_version deb $CURR_VERSION