fix: the same version is recommended after updating the package

Close #84

Packages/com.coffee.upm-git-extension/Editor/Commands/get-available-versions.js

@@ -26,6 +26,16 @@ const hashCode = str => {
     .reduce((s, c) => Math.imul(31, s) + c.charCodeAt(0) | 0, 0)
 }
 
+const groupBy = (array, property) => {
+  return array.reduce(
+    (group, item) => Object.assign(group, {
+      [item[property]]: (group[item[property]] || []).concat(item)
+    }),
+    {}
+  )
+
+}
+
 const id = hashCode(`${packageName}@${repoUrl}`);
 const repoDir = `Library/UGE/packages/${id}`;
 const resultDir = `Library/UGE/results`;
@@ -40,14 +50,14 @@ const mkdirSyncRecrusive = postPath => {
       try {
         fs.mkdirSync(path);
       }
-      catch (e){
+      catch (e) {
       }
     }
     return path;
   }, "");
 };
 
-const IsSupported = (version, unityVersion) => {
+const isSupportedVersion = (version, unityVersion) => {
   const regVersion = /^(\d+)\.(\d+)\.(\d+)(.*)$/;
   const v = version.match(regVersion);
   const uv = unityVersion.match(regVersion);
@@ -60,6 +70,7 @@ const IsSupported = (version, unityVersion) => {
 const parseRef = text => {
   try {
     const regRefName = /^refs\/(tags\/|remotes\/origin\/)([^\/]+)$/;
+    const hash = text.split(/\s+/)[0];
     const ref = text.split(/\s+/)[1];
     const refName = ref.match(regRefName)[2];
 
@@ -79,15 +90,18 @@ const parseRef = text => {
     const unity = p.unity || "2018.3";
     const unityRelease = p.unityRelease || "0a0";
     const supportedVersion = `${unity}.${unityRelease}`;
-    if (!IsSupported(supportedVersion, unityVersion)) {
+    if (!isSupportedVersion(supportedVersion, unityVersion)) {
       console.error(
         `error: ${unityVersion} is not supported. Supported unity versions are '>=${supportedVersion}'`
       );
       return undefined;
     }
 
+    const regId = new RegExp(`((release|v|ver|version)?[.-]?)*${p.version}`);
+    const id = refName.replace(regId, "");
+
     //
-    return { packageName: p.name, repoUrl, version: p.version, refName };
+    return { packageName: p.name, repoUrl, version: p.version, refName, hash, id };
   } catch (e) {
     return undefined;
   }
@@ -133,10 +147,16 @@ try {
 
   // Get valid package references
   console.log("\n>> Get valid package references");
-  const versions = execSync("git show-ref", { encoding: "utf-8" })
+  const allVersions = execSync("git show-ref", { encoding: "utf-8" })
     .split(/[\r\n]+/)
     .map(x => parseRef(x))
-    .filter(x => x);
+    .filter(x => x)
+    .sort((a, b) => a.id < b.id ? -1 : b.id < a.id ? 1 : 0);
+
+  // Sort by version id and get first element
+  const grouped = groupBy(allVersions, "hash");
+  const versions = Object.keys(grouped)
+    .map(x => grouped[x].find(_ => true))
 
   // Output valid package references to file
   console.log(`\n>> Output valid package (${versions.length} versions) references to file: ${outputFile}`);