mirror of
https://github.com/philomena-dev/philomena.git
synced 2024-11-23 20:18:00 +01:00
129 lines
3.6 KiB
Elixir
129 lines
3.6 KiB
Elixir
defmodule PhilomenaWeb.MarkdownRenderer do
|
|
alias Philomena.Markdown
|
|
alias Philomena.Images.Image
|
|
alias Philomena.Repo
|
|
import Phoenix.HTML
|
|
import Phoenix.HTML.Link
|
|
import Ecto.Query
|
|
|
|
@image_view Module.concat(["PhilomenaWeb.ImageView"])
|
|
|
|
def render_one(item, conn) do
|
|
hd(render_collection([item], conn))
|
|
end
|
|
|
|
def render_collection(collection, conn) do
|
|
representations =
|
|
collection
|
|
|> Enum.flat_map(fn %{body: text} ->
|
|
find_images(text || "")
|
|
end)
|
|
|> render_representations(conn)
|
|
|
|
Enum.map(collection, fn %{body: text} ->
|
|
Markdown.to_html(text || "", representations)
|
|
end)
|
|
end
|
|
|
|
def render_unsafe(text, conn) do
|
|
images = find_images(text)
|
|
representations = render_representations(images, conn)
|
|
|
|
Markdown.to_html_unsafe(text, representations)
|
|
end
|
|
|
|
defp find_images(text) do
|
|
Regex.scan(~r/>>(\d+)([tsp])?/, text, capture: :all_but_first)
|
|
|> Enum.map(fn matches ->
|
|
[Enum.at(matches, 0) |> String.to_integer(), Enum.at(matches, 1) || ""]
|
|
end)
|
|
|> Enum.filter(fn m -> Enum.at(m, 0) < 2_147_483_647 end)
|
|
end
|
|
|
|
defp load_images(images) do
|
|
ids = Enum.map(images, fn m -> Enum.at(m, 0) end)
|
|
|
|
Image
|
|
|> where([i], i.id in ^ids)
|
|
|> preload(tags: :aliases)
|
|
|> Repo.all()
|
|
|> Map.new(&{&1.id, &1})
|
|
end
|
|
|
|
defp link_suffix(image) do
|
|
cond do
|
|
not is_nil(image.duplicate_id) ->
|
|
" (merged)"
|
|
|
|
image.hidden_from_users ->
|
|
" (deleted)"
|
|
|
|
not image.approved ->
|
|
" (pending approval)"
|
|
|
|
true ->
|
|
""
|
|
end
|
|
end
|
|
|
|
defp render_representations(images, conn) do
|
|
loaded_images = load_images(images)
|
|
|
|
images
|
|
|> Enum.map(fn group ->
|
|
img = loaded_images[Enum.at(group, 0)]
|
|
text = "#{Enum.at(group, 0)}#{Enum.at(group, 1)}"
|
|
|
|
rendered =
|
|
cond do
|
|
img != nil ->
|
|
case group do
|
|
[_id, "p"] when not img.hidden_from_users and img.approved ->
|
|
Phoenix.View.render(@image_view, "_image_target.html",
|
|
image: img,
|
|
size: @image_view.select_version(img, :medium),
|
|
conn: conn
|
|
)
|
|
|> safe_to_string()
|
|
|
|
[_id, "t"] when not img.hidden_from_users and img.approved ->
|
|
Phoenix.View.render(@image_view, "_image_target.html",
|
|
image: img,
|
|
size: @image_view.select_version(img, :small),
|
|
conn: conn
|
|
)
|
|
|> safe_to_string()
|
|
|
|
[_id, "s"] when not img.hidden_from_users and img.approved ->
|
|
Phoenix.View.render(@image_view, "_image_target.html",
|
|
image: img,
|
|
size: @image_view.select_version(img, :thumb_small),
|
|
conn: conn
|
|
)
|
|
|> safe_to_string()
|
|
|
|
[_id, suffix] when not img.approved ->
|
|
">>#{img.id}#{suffix}#{link_suffix(img)}"
|
|
|
|
[_id, ""] ->
|
|
link(">>#{img.id}#{link_suffix(img)}", to: "/images/#{img.id}")
|
|
|> safe_to_string()
|
|
|
|
[_id, suffix] when suffix in ["t", "s", "p"] ->
|
|
link(">>#{img.id}#{suffix}#{link_suffix(img)}", to: "/images/#{img.id}")
|
|
|> safe_to_string()
|
|
|
|
# This condition should never trigger, but let's leave it here just in case.
|
|
[id, suffix] ->
|
|
">>#{id}#{suffix}"
|
|
end
|
|
|
|
true ->
|
|
">>#{text}"
|
|
end
|
|
|
|
[text, rendered]
|
|
end)
|
|
|> Map.new(fn [id, html] -> {id, html} end)
|
|
end
|
|
end
|