Refactor routing code

src/routes/media.nim

@@ -0,0 +1,64 @@
+import asyncfile, uri, strutils, httpclient, os
+
+import jester, regex
+
+import router_utils
+import ".."/[types, formatters, utils, prefs]
+import ../views/general
+
+export asyncfile, httpclient, os, strutils
+export regex
+export utils
+
+proc createMediaRouter*(cfg: Config) =
+  router media:
+    get "/pic/@sig/@url":
+      cond "http" in @"url"
+      cond "twimg" in @"url"
+      let
+        uri = parseUri(decodeUrl(@"url"))
+        path = uri.path.split("/")[2 .. ^1].join("/")
+        filename = cfg.cacheDir / cleanFilename(path & uri.query)
+
+      if getHmac($uri) != @"sig":
+        resp showError("Failed to verify signature", cfg.title)
+
+      if not existsDir(cfg.cacheDir):
+        createDir(cfg.cacheDir)
+
+      if not existsFile(filename):
+        let client = newAsyncHttpClient()
+        await client.downloadFile($uri, filename)
+        client.close()
+
+      if not existsFile(filename):
+        resp Http404
+
+      let file = openAsync(filename)
+      let buf = await readAll(file)
+      file.close()
+
+      resp buf, mimetype(filename)
+
+    get "/video/@sig/@url":
+      cond "http" in @"url"
+      var url = decodeUrl(@"url")
+      let prefs = cookiePrefs()
+
+      if getHmac(url) != @"sig":
+        resp showError("Failed to verify signature", cfg.title)
+
+      let client = newAsyncHttpClient()
+      var content = await client.getContent(url)
+
+      if ".vmap" in url:
+        var m: RegexMatch
+        discard content.find(re"""url="(.+.m3u8)"""", m)
+        url = decodeUrl(content[m.group(0)[0]])
+        content = await client.getContent(url)
+
+      if ".m3u8" in url:
+        content = proxifyVideo(content, prefs.proxyVideos)
+
+      client.close()
+      resp content, mimetype(url)