CLD-7006 Fix version bump script pt2 (#7775)

* Fix version bump script pt2

* Make shellcheck happy

scripts/bump.sh

@@ -1,17 +1,18 @@
 #!/bin/bash
+#shellcheck disable=SC2166,SC2064,SC2015
 set -eu -o pipefail
 cd "$(dirname "$0")"/..
 
 log () { echo "[$(date +%Y-%m-%dT%H:%M:%S%Z)]" "$@"; }
 
-: ${BRANCH_TO_BUILD:=main}
+: "${BRANCH_TO_BUILD:=main}"
-: ${PR_REVIEWERS:=mattermost/core-build-engineers}
+: "${PR_REVIEWERS:=mattermost/core-build-engineers}"
-: ${BUMP_BUILD_NUMBER:=}    # You can optionally specify the BUILD_NUMBER variable for selecting the next build number
+: "${BUMP_BUILD_NUMBER:=}"    # You can optionally specify the BUILD_NUMBER variable for selecting the next build number
-                            # If you don't, then the Fastlane action will pick the next build number automatically
+                              # If you don't, then the Fastlane action will pick the next build number automatically
-: ${BUMP_VERSION_NUMBER:=}  # If enabled, you must populate the VERSION_NUMBER variable as well
+: "${BUMP_VERSION_NUMBER:=}"  # If enabled, you must populate the VERSION_NUMBER variable as well
-: ${CREATE_PR:=}            # Enable CREATE_PR to push the commit to origin, and create a corresponding PR
+: "${CREATE_PR:=}"            # Enable CREATE_PR to push the commit to origin, and create a corresponding PR
-: ${PR_EXTRA_MESSAGE:=}     # Optional message to add in the PR description
+: "${PR_EXTRA_MESSAGE:=}"     # Optional message to add in the PR description
-: ${GIT_LOCAL_BRANCH:=chore-bump-${BRANCH_TO_BUILD}-$(date +%s)}
+: "${GIT_LOCAL_BRANCH:=chore-bump-${BRANCH_TO_BUILD}-$(date +%s)}"
 
 log "Checking that the configuration is sane"
 if [ -z "${BUMP_BUILD_NUMBER}" -a -z "${BUMP_VERSION_NUMBER}" ]; then
@@ -19,9 +20,9 @@ if [ -z "${BUMP_BUILD_NUMBER}" -a -z "${BUMP_VERSION_NUMBER}" ]; then
   exit 1
 fi
 if [ -n "$BUMP_VERSION_NUMBER" ]; then
-  : ${VERSION_NUMBER:?Setting this variable is required when BUMP_VERSION_NUMBER is set.}
+  : "${VERSION_NUMBER:?Setting this variable is required when BUMP_VERSION_NUMBER is set.}"
   VERSION_REGEXP='^[0-9]+\.[0-9]+\.[0-9]+$'
-  if ! grep -qE $VERSION_REGEXP"" <<<$VERSION_NUMBER; then
+  if ! grep -qE "$VERSION_REGEXP" <<<"$VERSION_NUMBER"; then
     log "Error: the VERSION_NUMBER variable value should match regexp '$VERSION_REGEXP'. Aborting." >&2
     exit 2
   fi
@@ -41,15 +42,15 @@ if [ -n "$BUMP_BUILD_NUMBER" ]; then
   if [ -z "${BUILD_NUMBER:-}" ]; then
     log "Selecting the next largest build number..."
     LATEST_BUILD_NUMBER=$(./scripts/get_latest_build_number.sh)
-    BUILD_NUMBER=$(($LATEST_BUILD_NUMBER + 1))
+    BUILD_NUMBER=$((LATEST_BUILD_NUMBER + 1))
   fi
   log "Build number to use for the beta build: $BUILD_NUMBER"
 fi
 
 log "Creating branch '${GIT_LOCAL_BRANCH}' based on branch '$BRANCH_TO_BUILD'"
-git checkout $BRANCH_TO_BUILD
+git checkout "$BRANCH_TO_BUILD"
 git pull
-git checkout -b $GIT_LOCAL_BRANCH
+git checkout -b "$GIT_LOCAL_BRANCH"
 
 log "Generating env file required by Fastlane..."
 tee .env <<EOF
@@ -81,18 +82,20 @@ fi
 
 if [ -n "${CREATE_PR}" ]; then
   log "Pushing branch ${GIT_LOCAL_BRANCH}, and creating a corresponding PR to ${BRANCH_TO_BUILD}"
-  git push origin ${GIT_LOCAL_BRANCH}
+  git push origin "${GIT_LOCAL_BRANCH}"
 
   log "Creating PR"
   PR_TITLE="Bump app ${BUMP_BUILD_NUMBER:+build}${BUMP_VERSION_NUMBER:+${BUMP_BUILD_NUMBER:+ and }version} number"
+  # We won't specify the milestone when opening the PR if either we're not bumping the version number, or if the milestone is not found
   MILESTONE_FOUND=$(curl -L -H "Accept: application/vnd.github+json" -H "X-GitHub-Api-Version: 2022-11-28" https://api.github.com/repos/mattermost/mattermost-mobile/milestones | jq -r ".[] | .title | select(. == \"v${VERSION_NUMBER:-}\")")
+  #shellcheck disable=SC2046
   gh pr create \
     --repo mattermost/mattermost-mobile \
     --base "${BRANCH_TO_BUILD}" \
     --head "${GIT_LOCAL_BRANCH}" \
     --reviewer "${PR_REVIEWERS}" \
     --title "$PR_TITLE" \
-    $([ -z "$BUMP_VERSION_NUMBER" -o -z "${MILESTONE_FOUND}" ] || echo -n "--milestone v${VERSION_NUMBER} --label CherryPick/Approved" # Do not specify the milestone if not bumping the version number, or if the milestone is not found) \
+    $([ -z "$BUMP_VERSION_NUMBER" -o -z "${MILESTONE_FOUND}" ] || echo -n "--milestone v${VERSION_NUMBER} --label CherryPick/Approved") \
     --body-file - <<EOF
 #### Summary
 $([ -z "$BUMP_BUILD_NUMBER" ] || echo "\