https://github.com/bonfire-networks/bonfire-app/issues/707

lib/mix_tasks/generators/gen.component.ex

@@ -0,0 +1,57 @@
+defmodule Mix.Tasks.Bonfire.Gen.Component do
+  @moduledoc """
+  `just mix bonfire.gen.component stateless Bonfire.MyUIExtension MyComponent`
+  or
+  `just mix bonfire.gen.component stateful Bonfire.MyUIExtension MyComponent`
+
+  will present you with a diff and create new files
+  """
+  use Igniter.Mix.Task
+  alias Bonfire.Common.Mix.Tasks.Helpers
+
+  def igniter(igniter, [state, extension, module_name | _] = _argv) do
+    gen_component(igniter, extension, module_name, state)
+  end
+
+  def gen_component(igniter, extension, module_name, state)
+      when state in ["stateful", "stateless"] do
+    ext_module =
+      extension
+      |> Macro.camelize()
+
+    snake_name = Macro.underscore(extension)
+
+    module_name =
+      String.trim_trailing(ext_module <> "." <> module_name, "Live")
+      |> Kernel.<>("Live")
+      |> Igniter.Project.Module.parse()
+
+    # |> IO.inspect()
+
+    lib_path_prefix = "lib/web/components"
+
+    igniter
+    |> Igniter.create_new_file(
+      Helpers.igniter_path_for_module(igniter, module_name, lib_path_prefix),
+      """
+      defmodule #{inspect(module_name)} do
+        use Bonfire.UI.Common.Web, :#{state}_component
+
+        prop name, :string, default: nil
+      end
+      """
+    )
+    |> Igniter.create_new_file(
+      Helpers.igniter_path_for_module(igniter, module_name, lib_path_prefix, "sface")
+      |> IO.inspect(),
+      """
+      <div>
+        Hello, This is a new #{state} component for #{ext_module}.
+
+        You can include a other components by uncommenting the line below and updating it with your other component module name and then passing the assigns you need:
+        {!-- <#{ext_module}.SimpleComponentLive name="#{ext_module}" /> --}
+      </div>
+      """
+    )
+  end
+end

lib/mix_tasks/generators/gen.extension.ex

@@ -0,0 +1,108 @@
+defmodule Mix.Tasks.Bonfire.Gen.Extension do
+  @moduledoc """
+  `just mix bonfire.gen.extension Bonfire.MyExtension`
+
+  will present you with a diff of new files to create your new extension and create a repo for it in `extensions/`
+  """
+
+  use Igniter.Mix.Task
+
+  @impl Igniter.Mix.Task
+  def info(_argv, _composing_task) do
+    %Igniter.Mix.Task.Info{
+      # description: "Creates a new Bonfire extension from a template",
+      positional: [
+        extension_name: [
+          type: :string,
+          required: true,
+          doc: "Name of the extension to create"
+        ]
+      ]
+    }
+  end
+
+  @impl Igniter.Mix.Task
+  def igniter(igniter) do
+    [extension_name] = igniter.args.argv
+    snake_name = Macro.underscore(extension_name)
+
+    camel_name =
+      extension_name
+      |> String.replace("bonfire_", "bonfire/")
+      |> Macro.camelize()
+
+    igniter
+    |> clone_template(snake_name)
+    |> rename_modules(snake_name, camel_name)
+    |> rename_config_file(snake_name)
+    |> reset_git(snake_name)
+    |> Igniter.add_notice(
+      "Done! You can now start developing your extension in ./extensions/#{snake_name}/"
+    )
+  end
+
+  defp clone_template(igniter, snake_name) do
+    if File.exists?("extensions/bonfire_extension_template") do
+      System.cmd("sh", [
+        "-c",
+        "cd extensions/bonfire_extension_template && find . -name '.git' -prune -o -print | cpio -pdm ../#{snake_name}"
+      ])
+    else
+      System.cmd(
+        "git",
+        [
+          "clone",
+          "--depth",
+          "1",
+          "https://github.com/bonfire-networks/bonfire_extension_template.git",
+          snake_name
+        ],
+        cd: "extensions"
+      )
+    end
+
+    igniter
+  end
+
+  defp rename_modules(igniter, snake_name, camel_name) do
+    patterns = ["**/*.ex", "**/*.exs", "**/*.md", "**/*.sface"]
+    base_path = "extensions/#{snake_name}/"
+
+    Enum.reduce(patterns, igniter, fn pattern, acc ->
+      Path.wildcard(base_path <> pattern)
+      |> Enum.reduce(acc, fn path, inner_acc ->
+        inner_acc
+        |> Igniter.include_existing_file(path)
+        |> Igniter.update_file(path, fn source ->
+          Rewrite.Source.update(source, :content, fn
+            content when is_binary(content) ->
+              content
+              |> String.replace("bonfire_extension_template", snake_name)
+              |> String.replace("Bonfire.ExtensionTemplate", camel_name)
+
+            content ->
+              content
+          end)
+        end)
+      end)
+    end)
+  end
+
+  defp rename_config_file(igniter, extension_name) do
+    old_name = "extensions/#{extension_name}/config/bonfire_extension_template.exs"
+    new_name = "extensions/#{extension_name}/config/#{extension_name}.exs"
+
+    Igniter.move_file(igniter, old_name, new_name)
+  end
+
+  defp reset_git(igniter, extension_name) do
+    cd_path = "extensions/#{extension_name}"
+
+    System.cmd("rm", ["-rf", ".git"], cd: cd_path)
+    System.cmd("git", ["init"], cd: cd_path)
+    System.cmd("git", ["add", "."], cd: cd_path)
+    System.cmd("git", ["commit", "-m", "new extension"], cd: cd_path)
+
+    igniter
+  end
+end

lib/mix_tasks/generators/gen.extension_ui.ex

@@ -0,0 +1,38 @@
+defmodule Mix.Tasks.Bonfire.Gen.Extension.Ui do
+  @moduledoc """
+  `just mix bonfire.gen.extension.ui Bonfire.MyExtension`
+
+  will present you with a diff of new files to create your new extension and create a repo for it in `extensions/`
+  """
+
+  use Igniter.Mix.Task
+
+  @impl Igniter.Mix.Task
+  def info(_argv, _composing_task) do
+    %Igniter.Mix.Task.Info{
+      # description: "Creates a new Bonfire extension from a template",
+      positional: [
+        extension_name: [
+          type: :string,
+          required: true,
+          doc: "Name of the UI extension to create"
+        ]
+      ]
+    }
+  end
+
+  @impl Igniter.Mix.Task
+  def igniter(igniter) do
+    [extension_name] = igniter.args.argv
+    # snake_name = Macro.underscore(extension_name)
+
+    camel_name =
+      extension_name
+      |> String.replace("bonfire_", "bonfire/")
+      |> Macro.camelize()
+
+    igniter
+    |> Igniter.compose_task(Mix.Tasks.Bonfire.Gen.Extension, [camel_name])
+    |> Igniter.compose_task(Mix.Tasks.Bonfire.Gen.Ui, [camel_name])
+  end
+end