binaries are renamed after 0.7.0

.tool-versions

@@ -1,2 +1,3 @@
 shellcheck 0.7.2
 shfmt 3.3.0
+bats 1.11.0

lib/utils.bash

@@ -32,11 +32,38 @@ list_all_versions() {
   list_github_tags
 }
 
+amd64_or_arm64() {
+  if [ "$(uname -m)" = "x86_64" ]; then
+    echo "amd64"
+  else
+    uname -m
+  fi
+}
+
+arch() {
+  local version=$1
+  local major=$(echo "$version" | cut -d'.' -f1)
+  local minor=$(echo "$version" | cut -d'.' -f2)
+  if [ "$major" -gt 0 ]; then
+    amd64_or_arm64
+  elif [ "$major" -eq 0 ] && [ "$minor" -ge 8 ]; then
+    amd64_or_arm64
+  else
+    echo "x86_64"
+  fi
+}
+
+url() {
+  local version
+  version="$1"
+  echo "$GH_REPO/releases/download/v${version}/k2tf_${version}_$(uname)_$(arch $version).tar.gz"
+}
+
 download_release() {
   local version filename url
   version="$1"
   filename="$2"
-  url="$GH_REPO/releases/download/v${version}/k2tf_${version}_$(uname)_x86_64.tar.gz"
+  url="$(url "$version")"
   echo "* Downloading $TOOL_NAME release $version..."
   curl "${curl_opts[@]}" -o "$filename" -C - "$url" || fail "Could not download $url"
 }

lib/utils.bats

@@ -0,0 +1,18 @@
+#!/usr/bin/env bats
+
+load 'utils.bash'
+
+@test "url function should return correct URL for version < 0.8.0" {
+  version="0.7.0"
+  result=$(url "$version")
+  expected="https://github.com/sl1pm4t/k2tf/releases/download/v0.7.0/k2tf_0.7.0_$(uname)_x86_64.tar.gz"
+  [ "$result" == "$expected" ]
+}
+@test "url function should return correct URL for version > 0.7.0" {
+  version="0.8.0"
+  result=$(url "$version")
+  expected="https://github.com/sl1pm4t/k2tf/releases/download/v0.8.0/k2tf_0.8.0_$(uname)_$(uname -m).tar.gz"
+  [ "$result" == "$expected" ]
+}
+
+