refactor: use modules instead of embeded scripts

action.yaml

@@ -31,61 +31,6 @@ runs:
     - name: Setup MoonBit
       shell: nu {0}
       run: |
-        const CLI_HOST = 'https://cli.moonbitlang.com'
-
-        const CLI_DOWNLOAD_PATH = {
-          Windows: 'windows',
-          Ubuntu: 'ubuntu_x86',
-          Darwin: 'macos_intel',
-        }
-
-        export-env {
-          $env.config.color_config.leading_trailing_space_bg = { attr: n }
-        }
-
-        # If current host is Windows
-        export def windows? [] {
-          # Windows / Darwin / Linux
-          (sys).host.name == 'Windows'
-        }
-
-        # Create a line by repeating the unit with specified times
-        def build-line [
-          times: int,
-          unit: string = '-',
-        ] {
-          0..<$times | reduce -f '' { |i, acc| $unit + $acc }
-        }
-
-        export def hr-line [
-          width?: int = 90,
-          --color(-c): string = 'g',
-          --blank-line(-b),
-          --with-arrow(-a),
-        ] {
-          echo $'(ansi $color)(build-line $width)(if $with_arrow {'>'})(ansi reset)'
-          if $blank_line { char nl }
-        }
-
-        # Download moonbit binary files to local
-        export def 'setup moonbit' [] {
-          let MOONBIT_BIN_DIR = [$nu.home-path '.moon'] | path join
-          const DEFAULT_BINS = ['moon', 'moonc', 'moonfmt', 'moonrun', 'mooninfo']
-          const WINDOWS_BINS = ['moon.exe', 'moonc.exe', 'moonfmt.exe', 'moonrun.exe']
-          mkdir $MOONBIT_BIN_DIR; cd $MOONBIT_BIN_DIR
-          let DOWNLOAD_PATH = $CLI_DOWNLOAD_PATH | get -i (sys).host.name
-
-          if (windows?) {
-            $WINDOWS_BINS | each {|it| aria2c $'($CLI_HOST)/($DOWNLOAD_PATH)/($it)' }
-          } else {
-            $DEFAULT_BINS | each {|it| aria2c $'($CLI_HOST)/($DOWNLOAD_PATH)/($it)'; chmod +x $it }
-          }
-
-          echo (char nl)
-          echo $'Contents of ($MOONBIT_BIN_DIR):'; hr-line -b
-          echo (ls -l $MOONBIT_BIN_DIR)
-          echo $MOONBIT_BIN_DIR  | save -a $env.GITHUB_PATH
-        }
-
+        use ${{ github.action_path }}/nu/moonbit.nu *
         setup moonbit