philomena/lib/philomena_web/views/stat_view.ex
2021-10-24 16:19:01 -04:00

40 lines
1.1 KiB
Elixir

defmodule PhilomenaWeb.StatView do
use PhilomenaWeb, :view
def upload_graph(data) do
data = Enum.sort_by(data, & &1["key"])
n_buckets = length(data)
{
%{"doc_count" => min_docs},
%{"doc_count" => max_docs}
} =
Enum.min_max_by(data, & &1["doc_count"], fn ->
{%{"doc_count" => 0}, %{"doc_count" => 0}}
end)
graph_width = 950
graph_height = 475
bar_width = safe_div(graph_width, n_buckets)
content_tag :svg, class: "upload-stats", viewBox: "0 0 #{graph_width} #{graph_height}" do
for {datum, i} <- Enum.with_index(data) do
bar_height = safe_div(datum["doc_count"], max_docs - min_docs) * graph_height
x = i * bar_width
y = graph_height - bar_height
height = bar_height
content_tag :rect, width: bar_width, height: height, x: x, y: y, fill: "#000" do
content_tag(:title,
do: [datum["key_as_string"], " - ", Integer.to_string(datum["doc_count"]), " uploads"]
)
end
end
end
end
defp safe_div(_n, 0), do: 0
defp safe_div(n, d), do: n / d
end