74 lines
2.3 KiB
Elixir
74 lines
2.3 KiB
Elixir
defmodule BDS.Generation.Pagefind do
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@moduledoc false
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@typedoc "An (relative_path, content) HTML output tuple."
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@type html_output :: {String.t(), String.t()}
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@typedoc "A (relative_path, content) generated file tuple."
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@type generated_file :: {String.t(), String.t()}
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@doc """
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Build the per-language Pagefind index outputs (`pagefind/index.json`,
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`pagefind/pagefind-ui.js`, `pagefind/pagefind-ui.css`) for every blog
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language declared on the plan.
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"""
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@spec build_outputs(map(), [html_output()]) :: [generated_file()]
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def build_outputs(plan, html_outputs) do
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plan.blog_languages
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|> Enum.uniq()
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|> Enum.flat_map(fn language ->
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route_language = route_language(plan.language, language)
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pages = pages_for_language(html_outputs, route_language)
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prefix =
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if route_language in [nil, ""], do: ["pagefind"], else: [route_language, "pagefind"]
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[
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{Path.join(prefix ++ ["index.json"]),
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Jason.encode!(%{"language" => language, "pages" => pages})},
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{Path.join(prefix ++ ["pagefind-ui.js"]), ui_js(language)},
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{Path.join(prefix ++ ["pagefind-ui.css"]), ui_css()}
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]
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end)
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end
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defp pages_for_language(html_outputs, route_language) do
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html_outputs
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|> Enum.filter(fn {relative_path, _content} ->
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String.ends_with?(relative_path, ".html") and language_match?(relative_path, route_language)
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end)
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|> Enum.map(fn {relative_path, content} ->
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%{
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"url" => "/" <> relative_path,
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"text" => text(content)
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}
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end)
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end
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defp language_match?(relative_path, nil),
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do: not String.starts_with?(relative_path, ["de/", "fr/", "it/", "es/"])
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defp language_match?(relative_path, ""), do: language_match?(relative_path, nil)
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defp language_match?(relative_path, route_language),
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do: String.starts_with?(relative_path, route_language <> "/")
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defp text(content) do
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content
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|> String.replace(~r/<[^>]+>/, " ")
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|> String.replace(~r/\s+/u, " ")
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|> String.trim()
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end
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defp ui_js(language) do
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"window.bDSPagefind = { language: #{Jason.encode!(language)} };\n"
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end
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defp ui_css do
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".pagefind-ui{display:block;}\n"
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end
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defp route_language(main_language, language) when main_language == language, do: nil
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defp route_language(_main_language, language), do: language
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end
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