PeerTube: Pick magnet link of the best resolution

[nimcoon.git] / src / lib.nim

diff --git a/src/lib.nim b/src/lib.nim
index 4305b2cbb1c0387cee28ce38887608d744009608..26df76293947f83968d4e318d2b8883246357d80 100644 (file)
--- a/src/lib.nim
+++ b/src/lib.nim
@@ -1,15 +1,17 @@
 import
   htmlparser,
   httpClient,
+  json,
   os,
   osproc,
+  re,
   sequtils,
-  sugar,
-  strformat,
   std/[terminal],
   strformat,
+  strformat,
   strtabs,
   strutils,
+  sugar,
   tables,
   uri,
   xmltree
@@ -25,9 +27,13 @@ type
 
 # poEchoCmd can be added to options for debugging
 let processOptions = {poStdErrToStdOut, poUsePath}
+let PEERTUBE_REGEX = re"videos\/watch\/[0-9a-f]{8}\b-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-\b[0-9a-f]{12}"
+
+proc isInstalled(program: string): bool =
+  execProcess("which " & program).len != 0
 
 proc selectMediaPlayer*(): string =
-  let availablePlayers = filterIt(supportedPlayers, execProcess("which " & it).len != 0)
+  let availablePlayers = supportedPlayers.filter(isInstalled)
   if len(availablePlayers) == 0:
     stderr.writeLine &"Please install one of the supported media players: {supportedPlayers}"
     raise newException(OSError, "No supported media player found")
@@ -40,6 +46,16 @@ proc getYoutubePage*(searchQuery: string): string =
   let response = get(client, &"https://www.youtube.com/results?hl=en&search_query={queryParam}")
   return $response.body
 
+proc getPeerTubeMagnetLink(url: string): string =
+  # Gets the magnet link of the best possible resolutino from PeerTube
+  let uuid = url.substr(find(url, PEERTUBE_REGEX) + "videos/watch/".len)
+  let domainName = url.substr(8, find(url, '/', start=8) - 1)
+  let apiURL = &"https://{domainName}/api/v1/videos/{uuid}"
+  let client = newHttpClient()
+  let response = get(client, apiURL)
+  let jsonNode = parseJson($response.body)
+  jsonNode["files"][0]["magnetUri"].getStr()
+
 func extractTitlesAndUrls*(html: string): SearchResults =
   {.noSideEffect.}:
     parseHtml(html).findAll("a").
@@ -58,14 +74,14 @@ func isPlaylist(url: string): bool =
 
 # This is a pure function with no side effects
 func buildPlayerArgs(url: string, options: Table[string, bool], player: string): seq[string] =
-  var args = @[url]
-  if options["musicOnly"]: args.add("--no-video")
-  if options["fullScreen"]: args.add("--fullscreen")
-  # Playlists are only supported for MPV player
-  if isPlaylist(url) and player == "mpv":
-    let list_arg = url.split('&')[1]
-    args[0] = "https://www.youtube.com/playlist?" & list_arg
-  return args
+  let url =
+    # Playlists are only supported for MPV player
+    if isPlaylist(url) and player == "mpv":
+      "https://www.youtube.com/playlist?" & url.split('&')[1]
+    else: url
+  let musicOnly = if options["musicOnly"]: "--no-video" else: ""
+  let fullScreen = if options["fullScreen"]: "--fullscreen" else: ""
+  return filterIt([url, musicOnly, fullScreen], it != "")
 
 proc play*(player: string, options: Table[string, bool], url: string, title: string = "") =
   let args = buildPlayerArgs(url, options, player)
@@ -78,19 +94,13 @@ proc play*(player: string, options: Table[string, bool], url: string, title: str
 
 func buildMusicDownloadArgs*(url: string): seq[string] =
   {.noSideEffect.}:
-    var args = @["--ignore-errors", "-f", "bestaudio", "--extract-audio", "--audio-format", "mp3", "--audio-quality", "0", "-o"]
     let downloadLocation = &"'{expandTilde(musicDownloadDirectory)}/%(title)s.%(ext)s'"
-    args.add(downloadLocation)
-    args.add(url)
-    return args
+    return @["--ignore-errors", "-f", "bestaudio", "--extract-audio", "--audio-format", "mp3", "--audio-quality", "0", "-o", downloadLocation, url]
 
 func buildVideoDownloadArgs*(url: string): seq[string] =
   {.noSideEffect.}:
-    var args = @["-f", "best", "-o"]
     let downloadLocation = &"'{expandTilde(videoDownloadDirectory)}/%(title)s.%(ext)s'"
-    args.add(downloadLocation)
-    args.add(url)
-    return args
+    return @["-f", "best", "-o", downloadLocation, url]
 
 proc download*(args: openArray[string], title: string) =
   styledEcho "\n", fgGreen, "Downloading ", styleBright, fgMagenta, title
@@ -106,11 +116,17 @@ func sanitizeURL*(url: string): string =
   urlLongen(stripZshEscaping(url))
 
 proc directPlay*(url: string, player: string, options: Table[string, bool]) =
-  if url.startswith("magnet:"):
+  let url =
+    if find(url, PEERTUBE_REGEX) != -1 and isInstalled("webtorrent"):
+      getPeerTubeMagnetLink(url)
+    else: url
+  if url.startswith("magnet:") or url.endswith(".torrent"):
     if options["musicOnly"]:
+      # TODO Replace with WebTorrent once it supports media player options
       discard execShellCmd(&"peerflix '{url}' -a --{player} -- --no-video")
     else:
-      discard execProcess("peerflix", args=[url, &"--{player}"], options=processOptions)
+      # WebTorrent is so much faster!
+      discard execProcess("webtorrent", args=[url, &"--{player}"], options=processOptions)
   else:
     play(player, options, url)