flutter: add Linux support

Signed-off-by: Patrick Linnane <[email protected]>

Author: izzalDev

Casks/f/flutter.rb

@@ -1,32 +1,38 @@
 cask "flutter" do
-  arch arm: "_arm64"
+  version "3.38.1"
+  sha256 :no_check
 
-  version "3.38.0"
-  sha256 arm:   "f3ddfeca3d44efd3de49ae293238c7c80b967a1d17529abae744c5ad9b5c2c5e",
-         intel: "d60297964c1079c29fb5a62fb9eccd249da45fddb7df15f6914b37af723dbacf"
-
-  url "https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos#{arch}_#{version}-stable.zip",
-      verified: "storage.googleapis.com/flutter_infra_release/releases/stable/macos/"
+  url "https://github.com/flutter/flutter.git",
+      branch:   "stable",
+      verified: "github.com/flutter/"
   name "Flutter SDK"
-  desc "UI toolkit for building applications for mobile, web and desktop"
+  desc "UI toolkit for building applications for mobile, web, and desktop"
   homepage "https://flutter.dev/"
 
+  on_macos do
+    depends_on arch: [:arm64, :intel]
+  end
+
+  on_linux do
+    depends_on arch: [:x86_64, :arm64]
+  end
+
   livecheck do
-    url "https://storage.googleapis.com/flutter_infra_release/releases/releases_macos.json"
-    strategy :json do |json|
-      json["releases"]&.map do |release|
-        next if release["channel"] != "stable"
-
-        release["version"]
-      end
-    end
+    url "https://github.com/flutter/flutter.git"
+    regex(/^v?(\d+(?:\.\d+)+)$/i)
   end
 
   auto_updates true
 
-  suite "flutter", target: "#{HOMEBREW_PREFIX}/share/flutter"
-  binary "flutter/bin/dart"
-  binary "flutter/bin/flutter"
+  binary "bin/flutter"
+  binary "bin/dart"
+  artifact ".", target: "#{HOMEBREW_PREFIX}/share/flutter"
+
+  postflight do
+    system_command "#{HOMEBREW_PREFIX}/share/flutter/bin/flutter",
+                   args:         ["precache"],
+                   print_stdout: true
+  end
 
   zap trash: "~/.flutter"
 end