defmodule Something.Schema do
  # @moduledoc false
  use ESx.Schema

  # @derive [Poison.Encoder, except: [:id]]
  defstruct [:id, :title]

  mapping do
    indexes :title, type: "string", analyzer: "ngram_analyzer", search_analyzer: "ngram_analyzer"
    indexes :content, type: "string", analyzer: "ngram_analyzer", search_analyzer: "ngram_analyzer"
  end

  settings do
    analysis do
      analyzer :ngram_analyzer,
        tokenizer: "ngram_tokenizer",
        char_filter: ["html_strip", "kuromoji_neologd_iteration_mark"],
        filter: ["lowercase", "kuromoji_neologd_stemmer", "cjk_width"]
      tokenizer :ngram_tokenizer,
        type: "nGram", min_gram: "2", max_gram: "3",
        token_chars: ["letter", "digit"]
    end
  end

  # mapping [
    # _ttl: [
      # enabled: "true",
      # default: "180d"
    # ],
    # _all: [
      # enabled: false
    # ],
    # properties: [
      # title: [
        # type: "string",
        # search_analyzer: "ngram_analyzer",
        # analyzer: "ngram_analyzer"
      # ],
      # content: [
        # type: "string",
        # search_analyzer: "ngram_analyzer",
        # analyzer: "ngram_analyzer"
      # ]
    # ]
  # ]

  # settings [
    # analysis: [
      # tokenizer: [
        # ngram_tokenizer: [
          # type: "nGram",
          # token_chars: [
            # "letter",
            # "digit"
          # ],
          # min_gram: "2",
          # max_gram: "3"
        # ]
      # ],
      # analyzer: [
        # ngram_analyzer: [
          # tokenizer: "ngram_tokenizer",
          # filter: [
            # "lowercase",
            # "kuromoji_stemmer",
            # "cjk_width"
          # ],
          # char_filter: [
            # "html_strip",
            # "kuromoji_iteration_mark"
          # ]
        # ]
      # ]
    # ]
  # ]

  # defstruct [:id, :title]

  # index_name "es_antenna"
  # document_type "elixir_exantenna_antenna"

  # settings [
    # number_of_replicas: "1",
    # number_of_shards: "5",
    # analysis: [
        # analyzer: [
            # default: [
                # filter: [ "kuromoji_neologd_baseform", "ja_posfilter", "cjk_width" ],
                # tokenizer: "ja_tokenizer",
                # type: "custom"
            # ],
            # ja_analyzer: [
                # filter: [ "kuromoji_neologd_baseform", "ja_posfilter", "cjk_width" ],
                # tokenizer: "ja_tokenizer",
                # type: "custom"
            # ],
            # ngram_analyzer: [
                # tokenizer: "ngram_tokenizer"
            # ]
        # ],
        # filter: [
            # edge_ngram: [ max_gram: "15", min_gram: "1", type: "edgeNGram" ],
            # ja_posfilter: [ stoptags: [ "助詞-格助詞-一般", "助詞-終助詞" ], type: "kuromoji_neologd_part_of_speech" ]
        # ],
        # tokenizer: [
            # ja_tokenizer: [ type: "kuromoji_neologd_tokenizer" ],
            # ngram_tokenizer: [ max_gram: "3", min_gram: "2", token_chars: [ "letter", "digit" ], type: "nGram" ]
        # ]
    # ]
  # ]

  # mapping [
    # properties: [
        # published_at: [
            # format: "strict_date_optional_time||epoch_millis",
            # type: "date"
        # ],
        # tags: [
            # "type": "string"
        # ],
        # title: [
            # "type": "string"
        # ]
    # ]
  # ]

  def as_indexed_json(%{} = schema, opts) do
    Map.drop schema, [:id]
  end

  def extract_function(modules, arity) do
    Enum.reduce modules, [], fn module, acc ->
      functions =
        Enum.map(module.__info__(:functions), fn
          {function, ^arity} -> function
          _             -> nil
        end)

      acc ++ Enum.filter_map(functions, & !!&1, & {module, &1})
    end
  end

  def get(args), do: args

end