docs/server: simplify using http-server

Co-authored-by: NAHO <90870942+trueNAHO@users.noreply.github.com>

docs/server/default.nix

@@ -1,21 +1,22 @@
 {
-  lib,
-  runCommand,
-  makeBinaryWrapper,
-  python3,
-  xdg-utils,
   docs,
+  http-server,
+  writeShellApplication,
 }:
-runCommand "serve-docs"
-  {
-    nativeBuildInputs = [ makeBinaryWrapper ];
-    meta.mainProgram = "server";
+writeShellApplication {
+  name = "serve-docs";
+  runtimeInputs = [ http-server ];
+  runtimeEnv.server_flags = [
+    # Search for available port
+    "--port=0"
+
+    # Disable browser cache
+    "-c-1"
+
+    # Open using xdg-open
+    "-o"
+  ];
+  text = ''
+    http-server ${docs} "''${server_flags[@]}"
+  '';
 }
-  ''
-    mkdir -p $out/bin
-    makeWrapper ${lib.getExe python3} \
-        $out/bin/server \
-        --add-flags ${./server.py} \
-        --chdir ${docs} \
-        --prefix PATH : ${lib.makeBinPath [ xdg-utils ]}
-  ''

docs/server/server.py

@@ -1,25 +0,0 @@
-from http.server import HTTPServer, SimpleHTTPRequestHandler
-from subprocess import call
-
-PORT = 8000
-URL = f"http://localhost:{PORT}"
-
-
-class AutoBrowseHTTPServer(HTTPServer):
-    def server_activate(self):
-        HTTPServer.server_activate(self)
-        print(f"Serving documentation at {URL}")
-        call(["xdg-open", URL])
-
-
-class UncachedHTTPHandler(SimpleHTTPRequestHandler):
-    def end_headers(self):
-        self.send_header("Cache-Control", "no-cache, no-store, must-revalidate")
-        self.send_header("Pragma", "no-cache")
-        self.send_header("Expires", "0")
-        super().end_headers()
-
-
-if __name__ == "__main__":
-    with AutoBrowseHTTPServer(("", PORT), UncachedHTTPHandler) as httpd:
-        httpd.serve_forever()