Add first step of creating an Article

lib/outlook/articles.ex

@@ -6,7 +6,7 @@ defmodule Outlook.Articles do
   import Ecto.Query, warn: false
   alias Outlook.Repo
 
-  alias Outlook.Articles.Article
+  alias Outlook.Articles.{Article,RawHtmlInput}
 
   @doc """
   Returns the list of articles.
@@ -101,4 +101,8 @@ defmodule Outlook.Articles do
   def change_article(%Article{} = article, attrs \\ %{}) do
     Article.changeset(article, attrs)
   end
+
+  def change_raw_html_input(%RawHtmlInput{} = raw_html_input, attrs \\ %{}) do
+    RawHtmlInput.changeset(raw_html_input, attrs)
+  end
 end

lib/outlook/articles/raw_html_input.ex

@@ -0,0 +1,16 @@
+defmodule Outlook.Articles.RawHtmlInput do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  embedded_schema do
+    field :content, :string
+  end
+
+  @doc false
+  def changeset(html_input, attrs) do
+    html_input
+    |> cast(attrs, [:content])
+    |> validate_required([:content])
+    |> validate_length(:content, min: 200)
+  end
+end

lib/outlook/html_preparations.ex

@@ -0,0 +1,14 @@
+defmodule Outlook.HtmlPreparations do
+  @moduledoc """
+  The HtmlPreparations context.
+  """
+
+  alias Outlook.HtmlPreparations.HtmlPreparation
+
+  def convert_raw_html_input(html) do
+    html
+      |> Floki.parse_fragment!
+      |> HtmlPreparation.floki_to_internal
+      |> HtmlPreparation.set_sibling_with
+  end
+end

lib/outlook/html_preparations/html_preparation.ex

@@ -0,0 +1,65 @@
+defmodule Outlook.HtmlPreparations.HtmlPreparation do
+  import Ecto.UUID, only: [generate: 0]
+
+  alias Outlook.InternalTree.InternalNode
+
+  @block_elements ["address","article","aside","blockquote","canvas","dd","div","dl","dt","fieldset","figcaption","figure","footer","form","h1","h2","h3","h4","h5","h6","header","hr","li","main","nav","noscript","ol","p","pre","section","table","tfoot","ul","video"]
+  # @inline_elements ["a","abbr","acronym","b","bdo","big","br","button","cite","code","dfn","em","i","img","input","kbd","label","map","object","output","q","samp","script","select","small","span","strong","sub","sup","textarea","time","tt","u","var"]
+
+  defp clean_atts_to_map(atts) do
+    atts_to_keep = ~w(href src)
+    atts_to_rename = ~w(class style src-set)
+    atts
+    |> Enum.reject(fn {k,_} -> k not in (atts_to_keep ++ atts_to_rename) end)
+    |> Enum.reject(fn {_,v} -> v == "" end)
+    |> Enum.map(fn {k,v} -> {k in atts_to_rename && "#{k}-old" || k, v} end)
+    |> Enum.map(fn {k,v} -> {String.to_atom(k),v} end)
+    |> Enum.into(%{})
+  end
+
+  def floki_to_internal [ { tag, attributes, content } | rest ] do
+    [ %InternalNode{
+        name: tag,
+        attributes: clean_atts_to_map(attributes),
+        type: :element,
+        uuid: generate(),
+        content: floki_to_internal(content)
+      } | floki_to_internal(rest) ]
+  end
+
+  def floki_to_internal [ "" <> textnode | rest ] do
+    [ %InternalNode{
+        type: :text,
+        uuid: generate(),
+        content: textnode
+      } | floki_to_internal(rest) ]
+  end
+
+  def floki_to_internal [ {:comment, comment} | rest ] do
+    [ %InternalNode{
+        type: :comment,
+        uuid: generate(),
+        content: comment
+      } | floki_to_internal(rest) ]
+  end
+
+  def floki_to_internal([ ]), do: ( [ ] )
+
+
+  def set_sibling_with([ %{type: :element} = node | rest ]) do
+    [ %InternalNode{ node |
+        sibling_with: node.name in @block_elements && :block || :inline,
+        content: set_sibling_with(node.content)
+      } | set_sibling_with(rest) ]
+  end
+
+  def set_sibling_with([ node | rest ]) do
+    sib_with = case node.type do
+      :text    -> Regex.match?(~r/^\s*$/, node.content) && :both || :inline
+      :comment -> :both
+    end
+    [ %InternalNode{ node | sibling_with: sib_with } | set_sibling_with(rest) ]
+  end
+
+  def set_sibling_with([ ]), do: ( [ ] )
+end

lib/outlook/internal_tree/internal_node.ex

@@ -0,0 +1,4 @@
+defmodule Outlook.InternalTree.InternalNode do
+ @derive Jason.Encoder
+ defstruct name: "", attributes: %{}, type: :atom, uuid: "", content: [], sibling_with: nil
+end