Claudio Ortolina
52 lines
1.4 KiB
Elixir
52 lines
1.4 KiB
Elixir
defmodule Obsidian.Parser do
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alias Obsidian.Entry
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def from_file_contents(file_contents) do
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with {:ok, [meta]} <- parse_frontmatter(file_contents) do
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{:ok,
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%Entry{
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type: parse_subtype(meta["subType"]),
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musicbrainz_id: meta["id"],
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title: meta["title"],
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year: meta["year"] |> maybe_parse_year(),
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image_url: meta["image"],
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genres: meta["genres"]
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}}
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end
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end
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defp parse_frontmatter(file_contents) do
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case file_contents do
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"---\n" <> rest ->
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case String.split(rest, "\n---\n") do
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[frontmatter, _] ->
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case YamlElixir.read_all_from_string(frontmatter) do
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{:ok, meta} -> {:ok, meta}
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{:error, _} -> {:error, "Invalid frontmatter"}
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end
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_ ->
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{:error, "Invalid frontmatter"}
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end
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_ ->
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{:error, "Invalid frontmatter"}
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end
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end
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defp parse_subtype("Album"), do: :album
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defp parse_subtype("ep"), do: :ep
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defp parse_subtype("Live"), do: :live
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defp parse_subtype("Compilation"), do: :compilation
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defp parse_subtype("Single"), do: :single
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defp parse_subtype(_), do: :other
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defp maybe_parse_year(nil), do: nil
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defp maybe_parse_year(year) when is_integer(year), do: year
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defp maybe_parse_year(year) when is_binary(year) do
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{integer, _remainder} = Integer.parse(year, 10)
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integer
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end
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end
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