feat(backend): add /api/v1/meta endpoint

backend/routes/meta/meta.go

@@ -0,0 +1,50 @@
+package meta
+
+import (
+	"net/http"
+
+	"codeberg.org/u1f320/pronouns.cc/backend/server"
+	"emperror.dev/errors"
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/render"
+)
+
+type Server struct {
+	*server.Server
+}
+
+func Mount(srv *server.Server, r chi.Router) {
+	s := &Server{Server: srv}
+
+	r.Get("/meta", server.WrapHandler(s.meta))
+}
+
+type MetaResponse struct {
+	GitRepository string `json:"git_repository"`
+	GitCommit     string `json:"git_commit"`
+	Users         int64  `json:"users"`
+	Members       int64  `json:"members"`
+}
+
+func (s *Server) meta(w http.ResponseWriter, r *http.Request) error {
+	ctx := r.Context()
+
+	var numUsers, numMembers int64
+	err := s.DB.QueryRow(ctx, "SELECT COUNT(*) FROM users").Scan(&numUsers)
+	if err != nil {
+		return errors.Wrap(err, "querying user count")
+	}
+
+	err = s.DB.QueryRow(ctx, "SELECT COUNT(*) FROM members").Scan(&numMembers)
+	if err != nil {
+		return errors.Wrap(err, "querying user count")
+	}
+
+	render.JSON(w, r, MetaResponse{
+		GitRepository: server.Repository,
+		GitCommit:     server.Revision,
+		Users:         numUsers,
+		Members:       numMembers,
+	})
+	return nil
+}