feat(web/bubblegum): allow passing status as an int r/2439

The whole pass the name of the status as a string thing was mostly born
out of an overeager use of yants. It is still very neat especially for
common cases like "OK", so we'll keep it, but also allow passing the
integer variant of the status as well which probably feels more natural
for a lot of people, especially over getting the casing right for
"I'm a teapot".

Change-Id: I3f012a291447ef385efdd28132292a8b331998c0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2850
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>

2 files changed, 16 insertions, 9 deletions

diff --git a/web/bubblegum/default.nix b/web/bubblegum/default.nix
index 393ac75d48..aecc701886 100644
--- a/web/bubblegum/default.nix
+++ b/web/bubblegum/default.nix
@@ -89,12 +89,12 @@ let
 
      See the [README](./README.md) for an example.
 
-    Type: string -> attrs string -> string -> string
+    Type: either int string -> attrs string -> string -> string
   */
   respond =
-    # response status as the textual representation in the
-    # HTTP protocol. See `statusCodes` for a list of valid
-    # options.
+    # response status as an integer (status code) or its
+    # textual representation in the HTTP protocol.
+    # See `statusCodes` for a list of valid options.
     statusArg:
     # headers as an attribute set of strings
     headers:
@@ -102,7 +102,14 @@ let
     bodyArg:
     let
       status =
-        if builtins.isString statusArg then {
+        if builtins.isInt statusArg
+        then {
+          code = statusArg;
+          line = lib.findFirst
+            (line: statusCodes."${line}" == statusArg)
+            null
+            (builtins.attrNames statusCodes);
+        } else if builtins.isString statusArg then {
           code = statusCodes."${statusArg}" or null;
           line = statusArg;
         } else {
diff --git a/web/bubblegum/examples/blog.nix b/web/bubblegum/examples/blog.nix
index f79ab0627e..213fbb7d19 100644
--- a/web/bubblegum/examples/blog.nix
+++ b/web/bubblegum/examples/blog.nix
@@ -108,24 +108,24 @@ let
     if pathInfo == "/"
     then {
       title = "blog";
-      status = "OK";
+      status = 200;
       inner = index posts;
     }
     else if !(validatePathInfo pathInfo)
     then {
       title = "Bad Request";
-      status = "Bad Request";
+      status = 400;
       inner = "No slashes in post names 😡";
     }
     # CGI should already url.decode for us
     else if builtins.pathExists (blogdir + "/" + pathInfo)
     then rec {
       title = parseTitle pathInfo;
-      status = "OK";
+      status = 200;
       inner = post title pathInfo;
     } else {
       title = "Not Found";
-      status = "Not Found";
+      status = 404;
       inner = "<h1>404 — not found</h1>";
     };
 in