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bdfr-browser/lib/bdfr_browser/http/plug.ex

160 lines
4.6 KiB
Elixir

defmodule BdfrBrowser.HTTP.Plug do
use Plug.Router
plug :match
plug :dispatch
get "/" do
tpl_params = [
subreddits: list_folders(sort: :asc)
]
tpl_file = Application.app_dir(:bdfr_browser, "priv/templates/http/index.eex")
content = EEx.eval_file(tpl_file, tpl_params)
conn
|> put_resp_header("content-type", "text/html; charset=utf-8")
|> send_resp(200, content)
end
get "/r/:subreddit" do
tpl_params = [
subreddit: subreddit,
dates: list_folders(paths: [subreddit])
]
tpl_file = Application.app_dir(:bdfr_browser, "priv/templates/http/subreddit.eex")
content = EEx.eval_file(tpl_file, tpl_params)
conn
|> put_resp_header("content-type", "text/html; charset=utf-8")
|> send_resp(200, content)
end
get "/r/:subreddit/:date" do
tpl_params = [
subreddit: subreddit,
date: date,
posts: read_posts(paths: [subreddit, date], ext: ".json")
]
tpl_file = Application.app_dir(:bdfr_browser, "priv/templates/http/subreddit_posts.eex")
content = EEx.eval_file(tpl_file, tpl_params)
conn
|> put_resp_header("content-type", "text/html; charset=utf-8")
|> send_resp(200, content)
end
get "/r/:subreddit/:date/:post" do
tpl_params = [
subreddit: subreddit,
date: date,
post: read_post(post, paths: [subreddit, date]),
media: post_media(post, paths: [subreddit, date]),
comment_template: Application.app_dir(:bdfr_browser, "priv/templates/http/_comment.eex")
]
tpl_file = Application.app_dir(:bdfr_browser, "priv/templates/http/post.eex")
content = EEx.eval_file(tpl_file, tpl_params)
conn
|> put_resp_header("content-type", "text/html; charset=utf-8")
|> send_resp(200, content)
end
get "/media/*path" do
base_directory = Application.fetch_env!(:bdfr_browser, :base_directory)
joined_path = Path.join(path)
{:ok, media} = [base_directory, joined_path] |> Path.join() |> File.read()
conn
|> put_resp_header("content-type", mime_from_ext(joined_path))
|> send_resp(200, media)
end
match _ do
send_resp(conn, 404, "Not Found")
end
# Helper
defp list_folders(args) do
paths = Keyword.get(args, :paths, [])
extname = Keyword.get(args, :ext, "")
sort = Keyword.get(args, :sort, :desc)
base_directory = Application.fetch_env!(:bdfr_browser, :base_directory)
[base_directory | paths]
|> Path.join()
|> File.ls!()
|> Enum.filter(fn s -> not String.starts_with?(s, ".") and Path.extname(s) == extname end)
|> Enum.sort_by(&String.downcase/1, sort)
end
defp read_posts(args) do
posts = list_folders(args)
sort = Keyword.get(args, :sort, :desc)
base_directory = Application.fetch_env!(:bdfr_browser, :base_directory)
post_dir = Path.join([base_directory | Keyword.fetch!(args, :paths)])
compact_posts =
for post <- posts do
{:ok, content} = [post_dir, post] |> Path.join() |> File.read!() |> Jason.decode()
%{
title: content["title"],
author: content["author"],
num_comments: content["num_comments"],
created_utc: content["created_utc"],
filename: Path.basename(post, ".json")
}
end
Enum.sort_by(compact_posts, fn p -> p.created_utc end, sort)
end
defp read_post(post, args) do
base_directory = Application.fetch_env!(:bdfr_browser, :base_directory)
post_dir = Path.join([base_directory | Keyword.fetch!(args, :paths)])
post_file = "#{post}.json"
{:ok, content} = [post_dir, post_file] |> Path.join() |> File.read!() |> Jason.decode(keys: :atoms)
content
end
defp post_media(post, args) do
base_directory = Application.fetch_env!(:bdfr_browser, :base_directory)
post_dir = Path.join([base_directory | Keyword.fetch!(args, :paths)])
post_img = "#{post}*.{jpg,JPG,jpeg,JPEG,png,PNG,gif,GIF}"
post_vid = "#{post}*.{mp4,MP4}"
%{
images: [post_dir, post_img] |> Path.join() |> Path.wildcard() |> Enum.map(&media_path/1),
videos: [post_dir, post_vid] |> Path.join() |> Path.wildcard() |> Enum.map(&media_path/1)
}
end
defp media_path(full_path) do
base_directory = Application.fetch_env!(:bdfr_browser, :base_directory)
full_path
|> String.replace("#{base_directory}/", "/media/")
|> String.split("/")
|> Enum.map(fn p -> URI.encode(p, &URI.char_unreserved?/1) end)
|> Enum.join("/")
end
defp mime_from_ext(path) do
normalized_path = String.downcase(path)
case Path.extname(normalized_path) do
".jpg" -> "image/jpeg"
".jpeg" -> "image/jpeg"
".png" -> "image/png"
".gif" -> "image/gif"
".mp4" -> "video/mp4"
end
end
end