120 lines
3.7 KiB
Elixir
120 lines
3.7 KiB
Elixir
defmodule LabelmakerWeb.Tools do
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# for the ~p sigil
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use Phoenix.VerifiedRoutes,
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endpoint: LabelmakerWeb.Endpoint,
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router: LabelmakerWeb.Router,
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statics: LabelmakerWeb.static_paths()
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alias LabelmakerWeb.Constants
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def process_parameters(parameters) do
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parameters =
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Constants.defaults()
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|> Map.new(fn {k, v} -> {Atom.to_string(k), v} end)
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|> Map.merge(parameters)
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parameters =
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Constants.defaults()
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|> Map.new(fn {k, v} -> {Atom.to_string(k), v} end)
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|> Map.merge(parameters)
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|> Map.take(Constants.permitted_keys())
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|> Map.new(fn {k, v} -> {String.to_atom(k), v} end)
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|> Enum.map(fn
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{:align, align} ->
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{:align, align |> String.downcase()}
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{:font, font} ->
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{:font, Constants.font_map()[String.downcase(font)]}
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{:height, height} ->
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{:height, process_height(height, parameters)}
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{:label, label} ->
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{:label, process_label(label)}
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{:label_too_long, _} ->
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{:label_too_long, String.length(parameters["label"]) > Constants.max_label_length()}
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{:preview_height, _} ->
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{:preview_height, calculate_preview_height(parameters)}
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{:preview_text, _} ->
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{:preview_text, String.split(parameters["label"], "\\n")}
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{:width, width} ->
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{:width, process_width(width, parameters)}
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pair ->
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pair
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end)
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|> Enum.filter(fn
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{:align, align} -> align in Constants.permitted_alignments()
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{:color, color} -> color in Constants.colors()
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{:font, font} -> font in Map.values(Constants.font_map())
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{:outline, outline} -> outline in Constants.outlines()
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{:size, size} -> size in Constants.sizes()
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_ -> true
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end)
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|> Map.new()
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parameters = Map.merge(Constants.defaults(), parameters)
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Map.put(parameters, :link, generate_link(parameters))
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end
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def process_gravity("left"), do: "west"
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def process_gravity("middle"), do: "center"
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def process_gravity("right"), do: "east"
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def process_gravity(alignment), do: alignment |> String.downcase()
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defp process_height("", _parameters), do: ""
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# defp process_height("", parameters) do
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# parameters["width"] |> String.to_integer() |> max(0) |> min(Constants.max_height())
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# end
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defp process_height(height, _parameters) do
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height |> String.to_integer() |> max(0) |> min(Constants.max_height())
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end
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defp process_label(label) do
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if String.length(label) > Constants.max_label_length() do
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String.slice(label, 0, Constants.max_label_length())
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else
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label
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end
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end
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defp generate_link(%{height: "", label: label, width: ""} = parameters) do
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~p"/#{label}?#{Map.take(parameters, [:color, :font, :outline, :size])}"
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end
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defp generate_link(%{label: label} = parameters) do
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~p"/#{label}?#{Map.take(parameters, [:align, :color, :font, :height, :outline, :width])}"
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end
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defp process_width("", _parameters), do: ""
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# defp process_width("", parameters) do
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# parameters["height"] |> String.to_integer() |> max(0) |> min(Constants.max_width())
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# end
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defp process_width(width, _parameters) do
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width |> String.to_integer() |> max(0) |> min(Constants.max_width())
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end
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defp calculate_preview_height(parameters) do
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size = parameters["size"] |> String.to_integer()
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line_breaks = Regex.scan(~r/#{Regex.escape("\\n")}/, parameters["label"]) |> length()
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size + size * line_breaks
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end
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def outline(_, error: true), do: outline(Constants.danger(), false)
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def outline("none", _error), do: ""
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def outline(color, _error),
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do:
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"text-shadow: -1px -1px 0 #{color}, 1px -1px 0 #{color}, -1px 1px 0 #{color}, 1px 1px 0 #{color};"
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end
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