ReadmeAnalyzer

CodesOnChain.ReadmeAnalyzer.ex

defmodule CodesOnChain.ReadmeAnalyzer do
    @moduledoc """
        analyze the readme of a repo.
        functions:
        - analyze_readme(text)
    """


    def get_module_doc, do: @moduledoc

    def analyze_readme(text) do
        ast = Earmark.as_ast!(text)
        raw_distribution = get_dis_content(ast, "Distribution")
        %{distribution: decode_distribution(raw_distribution)}
    end

    def decode_distribution(dis) do
       dis 
       |> String.replace(" ", "") 
       |> String.split("\n") 
       |> Enum.map(fn elem -> String.split(elem, ",") end)
    end

    def get_dis_content(ast, header_content) do
        index = get_index_of_header(ast, header_content)
        {_pre, aft} = Enum.split(ast, index + 1)
       
        aft
        |> get_next_pre()
        |> get_code_in_pre()
    end

    def get_index_of_header(ast, header_content) do
        ast
        |> Enum.find_index(fn el -> ((el |> elem(0)) == "h2" and String.contains?(el |> elem(2) |> Enum.fetch!(0), header_content))
        end)
    end

    def get_next_pre(ast) do
        ast
        |> Enum.find(fn el -> ((el |> elem(0)) == "pre")
        end)
    end

    def get_code_in_pre(pre) do
        {"pre", _, codes, _} = pre
        code = codes |> Enum.fetch!(0)
        {"code", _, code_content, _} = code
        Enum.fetch!(code_content, 0)
    end

end