Igniter task to install Phoenix

lib/igniter.ex

@@ -1129,48 +1129,62 @@ defmodule Igniter do
           source -> source
         end
 
-      if Rewrite.Source.from?(source, :string) do
-        content_lines =
-          source
-          |> Rewrite.Source.get(:content)
-          |> String.split("\n")
-          |> Enum.with_index()
-
-        space_padding =
-          content_lines
-          |> Enum.map(&elem(&1, 1))
-          |> Enum.max()
-          |> to_string()
-          |> String.length()
-
-        diffish_looking_text =
-          Enum.map_join(content_lines, "\n", fn {line, line_number_minus_one} ->
-            line_number = line_number_minus_one + 1
-
-            "#{String.pad_trailing(to_string(line_number), space_padding)} #{color(IO.ANSI.yellow(), color?)}| #{color(IO.ANSI.green(), color?)}#{line}#{color(IO.ANSI.reset(), color?)}"
-          end)
+      cond do
+        Rewrite.Source.from?(source, :string) &&
+            String.valid?(Rewrite.Source.get(source, :content)) ->
+          content_lines =
+            source
+            |> Rewrite.Source.get(:content)
+            |> String.split("\n")
+            |> Enum.with_index()
+
+          space_padding =
+            content_lines
+            |> Enum.map(&elem(&1, 1))
+            |> Enum.max()
+            |> to_string()
+            |> String.length()
+
+          diffish_looking_text =
+            Enum.map_join(content_lines, "\n", fn {line, line_number_minus_one} ->
+              line_number = line_number_minus_one + 1
+
+              "#{String.pad_trailing(to_string(line_number), space_padding)} #{color(IO.ANSI.yellow(), color?)}| #{color(IO.ANSI.green(), color?)}#{line}#{color(IO.ANSI.reset(), color?)}"
+            end)
 
-        if String.trim(diffish_looking_text) != "" do
-          """
-          Create: #{Rewrite.Source.get(source, :path)}
+          if String.trim(diffish_looking_text) != "" do
+            """
+            Create: #{Rewrite.Source.get(source, :path)}
 
-          #{diffish_looking_text}
-          """
-        else
-          ""
-        end
-      else
-        diff = Rewrite.Source.diff(source, color: color?) |> IO.iodata_to_binary()
+            #{diffish_looking_text}
+            """
+          else
+            ""
+          end
+
+        String.valid?(Rewrite.Source.get(source, :content)) ->
+          diff = Rewrite.Source.diff(source, color: color?) |> IO.iodata_to_binary()
+
+          if String.trim(diff) != "" do
+            """
+            Update: #{Rewrite.Source.get(source, :path)}
 
-        if String.trim(diff) != "" do
+            #{diff}
+            """
+          else
+            ""
+          end
+
+        !String.valid?(Rewrite.Source.get(source, :content)) ->
           """
-          Update: #{Rewrite.Source.get(source, :path)}
+          Create: #{Rewrite.Source.get(source, :path)}
 
-          #{diff}
+          (content diff can't be displayed)
           """
-        else
+
+        :else ->
+          dbg(source)
           ""
-        end
       end
     end)
   end

lib/igniter/phoenix/generator.ex

@@ -0,0 +1,116 @@
+defmodule Igniter.Phoenix.Generator do
+  @moduledoc false
+  # Wrap Phx.New.Generator
+  # https://github.com/phoenixframework/phoenix/blob/7586cbee9e37afbe0b3cdbd560b9e6aa60d32bf6/installer/lib/phx_new/generator.ex#L69
+
+  def copy_from(igniter, project, mod, name) when is_atom(name) do
+    mapping = mod.template_files(name)
+
+    templates =
+      for {format, _project_location, files} <- mapping,
+          {source, target_path} <- files,
+          source = to_string(source) do
+        target = expand_path_with_bindings(target_path, project)
+        {format, source, target}
+      end
+
+    Enum.reduce(templates, igniter, fn {format, source, target}, acc ->
+      case format do
+        :keep ->
+          acc
+
+        :text ->
+          contents = mod.render(name, source, project.binding)
+          Igniter.create_new_file(acc, target, contents, on_exists: :overwrite)
+
+        :config ->
+          contents = mod.render(name, source, project.binding)
+          config_inject(acc, target, contents)
+
+        :prod_config ->
+          contents = mod.render(name, source, project.binding)
+          prod_only_config_inject(acc, target, contents)
+
+        :eex ->
+          contents = mod.render(name, source, project.binding)
+          Igniter.create_new_file(acc, target, contents, on_exists: :overwrite)
+      end
+    end)
+  end
+
+  defp expand_path_with_bindings(path, project) do
+    Regex.replace(Regex.recompile!(~r/:[a-zA-Z0-9_]+/), path, fn ":" <> key, _ ->
+      project |> Map.fetch!(:"#{key}") |> to_string()
+    end)
+  end
+
+  defp config_inject(igniter, file, to_inject) do
+    patterns = [
+      """
+      import Config
+      __cursor__()
+      """
+    ]
+
+    Igniter.create_or_update_elixir_file(igniter, file, to_inject, fn zipper ->
+      case Igniter.Code.Common.move_to_cursor_match_in_scope(zipper, patterns) do
+        {:ok, zipper} ->
+          {:ok, Igniter.Code.Common.add_code(zipper, to_inject)}
+
+        _ ->
+          {:warning,
+           """
+           Could not automatically inject the following config into #{file}
+
+           #{to_inject}
+           """}
+      end
+    end)
+  end
+
+  defp prod_only_config_inject(igniter, file, to_inject) do
+    patterns = [
+      """
+      if config_env() == :prod do
+        __cursor__()
+      end
+      """,
+      """
+      if :prod == config_env() do
+        __cursor__()
+      end
+      """
+    ]
+
+    Igniter.create_or_update_elixir_file(igniter, file, to_inject, fn zipper ->
+      case Igniter.Code.Common.move_to_cursor_match_in_scope(zipper, patterns) do
+        {:ok, zipper} ->
+          {:ok, Igniter.Code.Common.add_code(zipper, to_inject)}
+
+        _ ->
+          {:warning,
+           """
+           Could not automatically inject the following config into #{file}
+
+           #{to_inject}
+           """}
+      end
+    end)
+  end
+
+  def gen_ecto_config(igniter, %{binding: binding}) do
+    adapter_config = binding[:adapter_config]
+
+    config_inject(igniter, "config/dev.exs", """
+    # Configure your database
+    config :#{binding[:app_name]}, #{binding[:app_module]}.Repo#{kw_to_config(adapter_config[:dev])}
+    """)
+  end
+
+  defp kw_to_config(kw) do
+    Enum.map(kw, fn
+      {k, {:literal, v}} -> ",\n  #{k}: #{v}"
+      {k, v} -> ",\n  #{k}: #{inspect(v)}"
+    end)
+  end
+end

lib/igniter/phoenix/single.ex

@@ -0,0 +1,71 @@
+defmodule Igniter.Phoenix.Single do
+  @moduledoc false
+  # Wrap Phx.New.Single
+  # https://github.com/phoenixframework/phoenix/blob/7586cbee9e37afbe0b3cdbd560b9e6aa60d32bf6/installer/lib/phx_new/single.ex
+
+  alias Phx.New.Project
+  alias Igniter.Phoenix.Generator
+
+  @mod Phx.New.Single
+
+  def generate(igniter, project) do
+    generators = [
+      {true, &gen_new/2},
+      {Project.ecto?(project), &gen_ecto/2},
+      {Project.html?(project), &gen_html/2},
+      {Project.mailer?(project), &gen_mailer/2},
+      {Project.gettext?(project), &gen_gettext/2},
+      {true, &gen_assets/2}
+    ]
+
+    Enum.reduce(generators, igniter, fn
+      {true, gen_fun}, acc -> gen_fun.(acc, project)
+      _, acc -> acc
+    end)
+  end
+
+  def gen_new(igniter, project) do
+    Generator.copy_from(igniter, project, @mod, :new)
+  end
+
+  def gen_ecto(igniter, project) do
+    igniter
+    |> Generator.copy_from(project, @mod, :ecto)
+    |> Generator.gen_ecto_config(project)
+  end
+
+  def gen_html(igniter, project) do
+    Generator.copy_from(igniter, project, @mod, :html)
+  end
+
+  def gen_mailer(igniter, project) do
+    Generator.copy_from(igniter, project, @mod, :mailer)
+  end
+
+  def gen_gettext(igniter, project) do
+    Generator.copy_from(igniter, project, @mod, :gettext)
+  end
+
+  def gen_assets(igniter, project) do
+    javascript? = Project.javascript?(project)
+    css? = Project.css?(project)
+    html? = Project.html?(project)
+
+    igniter = Generator.copy_from(igniter, project, @mod, :static)
+
+    igniter =
+      if html? or javascript? do
+        command = if javascript?, do: :js, else: :no_js
+        Generator.copy_from(igniter, project, @mod, command)
+      else
+        igniter
+      end
+
+    if html? or css? do
+      command = if css?, do: :css, else: :no_css
+      Generator.copy_from(igniter, project, @mod, command)
+    else
+      igniter
+    end
+  end
+end

lib/igniter/project/config.ex

@@ -189,6 +189,7 @@ defmodule Igniter.Project.Config do
     end)
   end
 
+  @doc false
   defp ensure_default_configs_exist(igniter, file)
        when file in ["config/dev.exs", "config/test.exs", "config/prod.exs"] do
     igniter