Try resolving compatible mirror releases

Allows user specified versions such as 5.0 to resolve to e.g. 5.0.x, with x being the latest release in the 5.0.x series.
If there is an exact match, then that is preferred.

Signed-off-by: Jonathan Schwender <[email protected]>

install_ohos_sdk.sh

@@ -31,9 +31,36 @@ WORK_DIR="${HOME}/setup-ohos-sdk"
 mkdir -p "${WORK_DIR}"
 cd "${WORK_DIR}"
 
+# RESOLVED_MIRROR_VERSION_TAG is both in- and output of this function.
+# If the user provides a version like `5.0`, we try to resolve the version to something more specific like `5.0.0`,
+# since we can't easily have aliasing releases on Github. (e.g. 5.0 pointing to the latest 5.0.x release)
+function select_version() {
+  local base_tag_version="${RESOLVED_MIRROR_VERSION_TAG}"
+  local available_releases
+  local exact_version_res
+  local latest_compatible_version
+  available_releases=$(gh release list --repo openharmony-rs/ohos-sdk --json 'tagName')
+  # Note: jq doesn't seem to return an error if select doesn't find anything
+  exact_version_res=$(jq ".[] | select(.tagName == \"${base_tag_version}\")" <<< "${available_releases}")
+  if [[ -n "${exact_version_res}" ]]; then
+    # If we found an exactly matching release, then we don't need to do anything.
+    return 0
+  fi
+  # Otherwise, get the first (== latest) release matching the start of our version tag (e.g. `5.0.3` for input `5.0`)
+  latest_compatible_version=$(jq "[.[] | select(.tagName | startswith(\"${base_tag_version}.\"))][0].tagName" <<< "${available_releases}" | tr -d '"')
+  if [[ -n "${latest_compatible_version}" ]]; then
+    echo "Resolved version ${base_tag_version} to release ${latest_compatible_version}"
+    RESOLVED_MIRROR_VERSION_TAG="${latest_compatible_version}"
+  else
+    echo "Couldn't find any compatible release on the mirror."
+  fi
+}
+
 MIRROR_DOWNLOAD_SUCCESS=false
 if [[ "${INPUT_MIRROR}" == "true" || "${INPUT_MIRROR}" == "force" ]]; then
-  gh release download "v${INPUT_VERSION}" --pattern "${OS_FILENAME}*" --repo openharmony-rs/ohos-sdk && MIRROR_DOWNLOAD_SUCCESS=true
+  RESOLVED_MIRROR_VERSION_TAG="v${INPUT_VERSION}"
+  select_version # This will update RESOLVED_MIRROR_VERSION_TAG.
+  gh release download "${RESOLVED_MIRROR_VERSION_TAG}" --pattern "${OS_FILENAME}*" --repo openharmony-rs/ohos-sdk && MIRROR_DOWNLOAD_SUCCESS=true
   if [[ "${MIRROR_DOWNLOAD_SUCCESS}" == "true" ]]; then
     # The mirror may have split the archives due to the Github releases size limits.
     # First rename the sha256 file, so we don't glob it.