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defmodule Cfg do |
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import Enum, only: [map: 2, reject: 2, reduce: 3] |
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import Map, only: [new: 1, put: 3, put_new: 3] |
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import String, only: [split: 2, split: 3, trim: 1, to_atom: 1] |
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import Utils.File, only: [file: 1] |
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import YamlElixir, only: [read_from_string: 1] |
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def config(name) do |
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file("#{name}.md") |
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|> valid(name) |
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|> finalize(name) |
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end |
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defp finalize(md, name), do: md |> parse() |> tools() |> includes() |> default(name: name) |
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defp valid("file not found: " <> _, name), do: raise(RuntimeError, "unknown agent: #{name}") |
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defp valid(md, _), do: md |
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defp tools(%{tools: raw} = config) when is_binary(raw) do |
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list = split(raw, ",") |> map(&trim/1) |> reject(&empty/1) |
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put(config, :tools, list) |
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end |
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defp tools(config), do: config |
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defp includes(%{includes: raw} = config) when is_binary(raw) do |
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list = split(raw, ",") |> map(&trim/1) |> reject(&empty/1) |
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put(config, :includes, list) |
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end |
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defp includes(config), do: config |
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defp empty(""), do: true |
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defp empty(_), do: false |
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defp parse(md) do |
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md |
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|> split("---", parts: 3) |
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|> join(md) |
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end |
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defp parse(header, body) do |
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header |
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|> then(&suppress(fn -> read_from_string(&1) end)) |
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|> join(body) |
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end |
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defp suppress(fun) do |
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fun.() |
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end |
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defp join(["", header, body], _), do: parse(header, body) |
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defp join({:ok, header}, body), do: build(header, body) |
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defp join(_, md), do: %{content: md} |
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defp build(header, body) do |
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header |
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|> map(&props/1) |
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|> new() |
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|> put(:content, trim(body)) |
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end |
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defp props({k, v}), do: {to_atom(k), v} |
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defp default(config, defaults) do |
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reduce(defaults, config, fn {key, value}, acc -> |
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put_new(acc, key, value) |
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end) |
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end |
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end |