Merge pull request #1302 from liveview-native/bc-mix-task

Rewrite of xcodegen task

Author: bcardarella

config/config.exs

@@ -3,4 +3,8 @@ import Config
 config :logger, :level, :debug
 config :logger, :backends, []
 
+config :live_view_native, plugins: [
+  LiveViewNative.SwiftUI
+]
+
 import_config "#{config_env()}.exs"

config/test.exs

@@ -5,14 +5,6 @@ config :live_view_native_stylesheet, :parsers, swiftui: LiveViewNative.SwiftUI.R
 config :live_view_native_stylesheet,
   annotations: false
 
-config :live_view_native, plugins: [
-  LiveViewNative.SwiftUI
-]
-
-config :live_view_native, plugins: [
-  LiveViewNative.SwiftUI
-]
-
 config :phoenix_template, format_encoders: [
   swiftui: Phoenix.HTML.Engine
 ]
@@ -39,7 +31,7 @@ config :live_view_native_stylesheet,
   content: [
     swiftui: [
       "test/**/*.*"
-      
+
     ]
   ],
-  output: "priv/static/assets"
+  output: "priv/static/assets"

lib/mix/tasks/lvn.gen.swiftui.ex

@@ -1,4 +1,4 @@
-defmodule Mix.Tasks.Lvn.SwiftUi.GenerateDocumentation do
+defmodule Mix.Tasks.Lvn.Swiftui.Gen.Docs do
   @moduledoc "Generates ex doc files for all SwiftUI views"
 
   use Mix.Task

lib/mix/tasks/generate_documentation.ex renamed to lib/mix/tasks/lvn.swiftui.gen.docs.ex

@@ -0,0 +1,134 @@
+defmodule Mix.Tasks.Lvn.Swiftui.Gen do
+  use Mix.Task
+
+  alias Mix.LiveViewNative.Context
+
+  @shortdoc "Generates the SwiftUI Project for LiveView Native"
+  def run(args) do
+    args = List.insert_at(args, 0, "swiftui")
+
+    context = Context.build(args, __MODULE__)
+
+    files = files_to_be_generated(context)
+
+    context
+    |> install_xcodegen()
+    |> copy_new_files(files)
+    |> run_xcodegen()
+    |> remove_xcodegen_files()
+
+    :ok
+  end
+
+  def switches, do: [
+    context_app: :string,
+    web: :string
+  ]
+
+  def validate_args!([format]), do: [format]
+  def validate_args!(_args) do
+    Mix.raise("""
+    mix lvn.swiftui.gen does not take any arguments, only the following switches:
+
+    --context-app
+    --web
+    """)
+  end
+
+  defp install_xcodegen(context) do
+    unless System.find_executable("xcodegen") do
+      cond do
+        # Install with Mint
+        System.find_executable("mint") ->
+          status_message("running", "mint install yonaskolb/xcodegen")
+          System.cmd("mint", ["install", "yonaskolb/xcodegen"])
+
+        # Install with Homebrew
+        System.find_executable("brew") ->
+          status_message("running", "brew install xcodegen")
+          System.cmd("brew", ["install", "xcodegen"])
+
+        # Clone from GitHub (fallback)
+        true ->
+          File.mkdir_p("_build/tmp/xcodegen")
+          status_message("running", "git clone https://github.com/yonaskolb/XcodeGen.git")
+          System.cmd("git", ["clone", "https://github.com/yonaskolb/XcodeGen.git", "_build/tmp/xcodegen"])
+      end
+    end
+
+    context
+  end
+
+  def files_to_be_generated(context) do
+    root =
+      Mix.Project.deps_paths[:live_view_native_swiftui]
+      |> Path.join("priv/templates/lvn.swiftui.gen/xcodegen/")
+
+    Path.wildcard(Path.join([root, "**/*"]))
+    |> Enum.filter(&(!File.dir?(&1)))
+    |> Enum.map(fn(path) ->
+      type =
+        path
+        |> Path.extname()
+        |> case do
+        ".swift" -> :eex
+        _any -> :text
+      end
+
+      path = Path.relative_to(path, root)
+
+      {type, path, rewrite_file_path(path, context)}
+    end)
+  end
+
+  defp rewrite_file_path(file_path, %{base_module: base_module, native_path: native_path}) do
+    file_path = String.replace(file_path, "TemplateApp", inspect(base_module))
+    Path.join(native_path, file_path)
+  end
+
+  defp copy_new_files(%Context{} = context, files) do
+    binding = [
+      context: context,
+      assigns: %{
+        app_namespace: inspect(context.base_module)
+      }
+    ]
+
+    apps = Context.apps(context.format)
+
+    Mix.Phoenix.copy_from(apps, "priv/templates/lvn.swiftui.gen/xcodegen", binding, files)
+
+    context
+  end
+
+  defp run_xcodegen(%{base_module: base_module, native_path: native_path} = context) do
+    xcodegen_env = [
+      {"LVN_APP_NAME", inspect(base_module)},
+      {"LVN_BUNDLE_IDENTIFIER", "com.example.#{inspect(base_module)}"}
+    ]
+
+    if File.exists?("_build/tmp/xcodegen") do
+      xcodegen_spec_path = Path.join(native_path, "project.yml")
+
+      System.cmd("swift", ["run", "xcodegen", "generate", "-s", xcodegen_spec_path], cd: "_build/tmp/xcodegen", env: xcodegen_env)
+    else
+      System.cmd("xcodegen", ["generate"], cd: native_path, env: xcodegen_env)
+    end
+
+    context
+  end
+
+  defp remove_xcodegen_files(%{native_path: native_path} = context) do
+    ["base_spec.yml", "project_watchos.yml", "project.yml", "skip_spec.yml"]
+    |> Enum.map(&(Path.join(native_path, &1)))
+    |> Enum.map(&File.rm/1)
+
+    context
+  end
+
+  defp status_message(label, message) do
+    formatted_message = IO.ANSI.green() <> "* #{label} " <> IO.ANSI.reset() <> message
+
+    IO.puts(formatted_message)
+  end
+end