diff --git a/README.md b/README.md
index 5f50b89..98f3539 100644
--- a/README.md
+++ b/README.md
@@ -1,15 +1,7 @@
-# vfox-plugin-template
-
-This is a [vfox plugin](https://vfox.lhan.me/plugins/create/howto.html) template with CI that package and publish the plugin.
-
-## Usage
-
-1. [Generate](https://github.com/version-fox/vfox-plugin-template/generate) a new repository based on this template.
-2. Configure [metadata](https://github.com/version-fox/vfox-plugin-template/blob/main/metadata.lua) information
-3. To develop your plugin further, please read [the plugins create section of the docs](https://vfox.lhan.me/plugins/create/howto.html).
-
-
-## How to publish?
-
-1. Push a new tag to the repository which name is `vX.Y.Z` (X.Y.Z is the version number).
-2. The CI will automatically package, then publish [release](https://github.com/version-fox/vfox-plugin-template/releases/tag/v0.0.1) and publish [manifest](https://github.com/version-fox/vfox-plugin-template/releases/tag/manifest).
+# Introduction
+vfox-scala is a plugin for [vfox](https://vfox.lhan.me/).
+# Install
+After installing vfox, run the following command to add the plugin:
+```bash
+vfox add scala
+```
\ No newline at end of file
diff --git a/hooks/available.lua b/hooks/available.lua
index a5e6e3b..5d95ebf 100644
--- a/hooks/available.lua
+++ b/hooks/available.lua
@@ -1,20 +1,23 @@
 local util = require("util")
-
+local http = require("http")
 --- Return all available versions provided by this plugin
 --- @param ctx table Empty table used as context, for future extension
 --- @return table Descriptions of available versions and accompanying tool descriptions
 function PLUGIN:Available(ctx)
-    util:DoSomeThing()
-    return {
-        {
-            version = "xxxx",
-            note = "LTS",
-            addition = {
-                {
-                    name = "npm",
-                    version = "8.8.8",
-                }
-            }
-        }
-    }
+    local resp, err = http.get({
+        url = util.SEARCH_URL
+    })
+    print(err)
+    if err ~= nil or resp.status_code ~= 200 then
+        return {}
+    end
+    local htmlBody = resp.body
+    local htmlContent= [[]] .. htmlBody .. [[]]
+    local result = {}
+
+    for match in htmlContent:gmatch('<div class="download%-elem">.-<a href="[^"]-">([^<]-)</a>.-</div>') do
+        table.insert(result, {version = match:gsub("^Scala ", ""), note = ""})
+    end
+
+    return result
 end
\ No newline at end of file
diff --git a/hooks/env_keys.lua b/hooks/env_keys.lua
index aa80ad2..eaf69fc 100644
--- a/hooks/env_keys.lua
+++ b/hooks/env_keys.lua
@@ -5,29 +5,16 @@
 --- @field ctx.path string SDK installation directory
 function PLUGIN:EnvKeys(ctx)
     --- this variable is same as ctx.sdkInfo['plugin-name'].path
-    local mainPath = ctx.path
-    local mainSdkInfo = ctx.main
-    local mpath = mainSdkInfo.path
-    local mversion = mainSdkInfo.version
-    local mname = mainSdkInfo.name
-    local sdkInfo = ctx.sdkInfo['sdk-name']
-    local path = sdkInfo.path
-    local version = sdkInfo.version
-    local name = sdkInfo.name
+    local path = ctx.path
     return {
         {
-            key = "JAVA_HOME",
-            value = mainPath
+            key = "SCALA_HOME",
+            value = path
         },
         {
             key = "PATH",
-            value = mainPath .. "/bin"
-        },
-        {
-            key = "PATH",
-            value = mainPath .. "/bin2"
-        },
-
+            value = path .. "/bin"
+        }
     }
 
 end
\ No newline at end of file
diff --git a/hooks/post_install.lua b/hooks/post_install.lua
index 4bf262a..56c3b96 100644
--- a/hooks/post_install.lua
+++ b/hooks/post_install.lua
@@ -2,11 +2,5 @@
 --- such as file operations for the SDK installation directory or compile source code
 --- Currently can be left unimplemented!
 function PLUGIN:PostInstall(ctx)
-    --- ctx.rootPath SDK installation directory
-    local rootPath = ctx.rootPath
-    local sdkInfo = ctx.sdkInfo['sdk-name']
-    local path = sdkInfo.path
-    local version = sdkInfo.version
-    local name = sdkInfo.name
-    local note = sdkInfo.note
+   --do nothing
 end
\ No newline at end of file
diff --git a/hooks/pre_install.lua b/hooks/pre_install.lua
index 1a9c34c..7d31763 100644
--- a/hooks/pre_install.lua
+++ b/hooks/pre_install.lua
@@ -1,3 +1,4 @@
+local util = require("util")
 --- Returns some pre-installed information, such as version number, download address, local files, etc.
 --- If checksum is provided, vfox will automatically check it for you.
 --- @param ctx table
@@ -5,35 +6,10 @@
 --- @return table Version information
 function PLUGIN:PreInstall(ctx)
     local version = ctx.version
+    local downloadUrl = util:getDownloadUrl(version)
+    print(downloadUrl)
     return {
-        --- Version number
-        version = "xxx",
-        --- remote URL or local file path [optional]
-        url = "xxx",
-        --- SHA256 checksum [optional]
-        sha256 = "xxx",
-        --- md5 checksum [optional]
-        md5 = "xxx",
-        --- sha1 checksum [optional]
-        sha1 = "xxx",
-        --- sha512 checksum [optional]
-        sha512 = "xx",
-        --- additional need files [optional]
-        addition = {
-            {
-                --- additional file name !
-                name = "xxx",
-                --- remote URL or local file path [optional]
-                url = "xxx",
-                --- SHA256 checksum [optional]
-                sha256 = "xxx",
-                --- md5 checksum [optional]
-                md5 = "xxx",
-                --- sha1 checksum [optional]
-                sha1 = "xxx",
-                --- sha512 checksum [optional]
-                sha512 = "xx",
-            }
-        }
+        version = version,
+        url = downloadUrl,
     }
 end
\ No newline at end of file
diff --git a/hooks/pre_use.lua b/hooks/pre_use.lua
index daf6d36..98235ef 100644
--- a/hooks/pre_use.lua
+++ b/hooks/pre_use.lua
@@ -2,26 +2,5 @@
 --- valid version information.
 --- @param ctx table Context information
 function PLUGIN:PreUse(ctx)
-    --- user input version
-    local version = ctx.version
-    --- user current used version
-    local previousVersion = ctx.previousVersion
-
-    --- installed sdks
-    local sdkInfo = ctx.installedSdks['version']
-    local path = sdkInfo.path
-    local name = sdkInfo.name
-    local version = sdkInfo.version
-
-    --- working directory
-    local cwd = ctx.cwd
-
-    --- user input scope
-    --- could be one of global/project/session
-    local scope = ctx.scope
-
-    --- return the version information
-    return {
-        version = version,
-    }
+   --do nothing
 end
\ No newline at end of file
diff --git a/lib/util.lua b/lib/util.lua
index 7a7f8d9..e3645f7 100644
--- a/lib/util.lua
+++ b/lib/util.lua
@@ -1,8 +1,63 @@
 
 local util = {}
 
-function util:DoSomeThing()
-    print("Do some thing")
+util.SEARCH_URL = "https://www.scala-lang.org/download/all.html"
+util.SCALA3_DOWNLOAD_URL = "https://github.com/scala/scala3/releases/download/%s/scala3-%s.%s"
+util.SCALA2_DOWNLOAD_URL_2104_UP = "https://downloads.lightbend.com/scala/%s/scala-%s.%s"
+util.SCALA2_DOWNLOAD_URL_250_UP = "https://scala-lang.org/files/archive/scala-%s.%s"
+
+function util:compare_versions(v1o, v2o)
+    local v1 = v1o.version
+    local v2 = v2o.version
+    local v1_parts = {}
+    for part in string.gmatch(v1, "[^.]+") do
+        table.insert(v1_parts, tonumber(part))
+    end
+
+    local v2_parts = {}
+    for part in string.gmatch(v2, "[^.]+") do
+        table.insert(v2_parts, tonumber(part))
+    end
+
+    for i = 1, math.max(#v1_parts, #v2_parts) do
+        local v1_part = v1_parts[i] or 0
+        local v2_part = v2_parts[i] or 0
+        if v1_part > v2_part then
+            return true
+        elseif v1_part < v2_part then
+            return false
+        end
+    end
+
+    return false
+end
+
+function util:getDownloadUrl(version)
+    local suffixType = ""
+    local downloadUrl = ""
+    if RUNTIME.osType == "windows" then
+        suffixType = "zip"
+    else
+        if util:compare_versions({version="2.7.1"},{version=version}) or  util:compare_versions({version=version},{version="3.0.0"})then
+            suffixType = "tar.gz"
+        else
+            suffixType = "tgz"
+        end
+    end
+
+    if util:compare_versions({version=version},{version="2.5.0"}) and util:compare_versions({version="2.10.4"},{version=version}) then
+        if util:compare_versions({version="2.7.0"},{version=version}) then
+            version = version:gsub("%.final", "-final")
+        end
+        downloadUrl = util.SCALA2_DOWNLOAD_URL_250_UP:format(version,suffixType)
+    elseif util:compare_versions({version="3.0.0"},{version=version}) then
+        downloadUrl = util.SCALA2_DOWNLOAD_URL_2104_UP:format(version, version,suffixType)
+    else
+        downloadUrl = util.SCALA3_DOWNLOAD_URL:format(version, version,suffixType)
+    end
+
+    return downloadUrl
+
 end
 
 return util
\ No newline at end of file
diff --git a/metadata.lua b/metadata.lua
index d221628..c5ad2ed 100644
--- a/metadata.lua
+++ b/metadata.lua
@@ -3,15 +3,15 @@ PLUGIN = {}
 
 --- !!! MUST BE SET !!!
 --- Plugin name
-PLUGIN.name = "your plugin name"
+PLUGIN.name = "scala"
 --- Plugin version
-PLUGIN.version = "0.0.1"
+PLUGIN.version = "0.1.0"
 --- Plugin homepage
-PLUGIN.homepage = "https://github.com/version-fox/vfox-plugin-template"
+PLUGIN.homepage = "https://github.com/version-fox/vfox-scala"
 --- Plugin license, please choose a correct license according to your needs.
 PLUGIN.license = "Apache 2.0"
 --- Plugin description
-PLUGIN.description = "your plugin description"
+PLUGIN.description = "Scala plugin, https://www.scala-lang.org/"
 
 
 --- !!! OPTIONAL !!!
@@ -33,8 +33,7 @@ NOTE:
     you can set this address to the manifest file address, so that the plugin can be updated automatically.
 
  --]]
-PLUGIN.manifestUrl = "https://github.com/version-fox/vfox-plugin-template/releases/download/manifest/manifest.json"
+PLUGIN.manifestUrl = "https://github.com/version-fox/vfox-scala/releases/download/manifest/manifest.json"
 -- Some things that need user to be attention!
 PLUGIN.notes = {
-    "",
 }