fix: added BASE_URL support

client/components/Header.tsx

@@ -1,5 +1,6 @@
 import { Link } from 'preact-router/match'
 import { isAdministrator, User, UserRole } from '../../shared/model'
+import { prependBaseUrl } from '../api'
 
 const ROLE_LABEL: Record<UserRole, string> = {
     ['admin']: 'Admin',
@@ -15,7 +16,7 @@ type Props = {
 export const Header = ({ user, noLogin }: Props) => (
     <header>
         <div class="logo">
-            <a href="/">PHC / Problemi</a>
+            <a href={prependBaseUrl('/')}>PHC / Problemi</a>
         </div>
         <nav>
             {user ? (

client/components/Problem.tsx

@@ -1,3 +1,4 @@
+import { prependBaseUrl } from '../api'
 import { Markdown } from './Markdown'
 
 type Props = {
@@ -11,7 +12,7 @@ export const Problem = ({ id, content, solutionsCount }: Props) => {
         <div class="problem">
             <div class="problem-header">
                 <div class="problem-title">
-                    <a href={`/problem/${id}`}>Problema {id}</a>
+                    <a href={prependBaseUrl(`/problem/${id}`)}>Problema {id}</a>
                 </div>
             </div>
             <div class="problem-content">

client/components/Solution.tsx

@@ -8,7 +8,7 @@ import {
     SolutionStatus,
     UserId,
 } from '../../shared/model'
-import { server } from '../api'
+import { prependBaseUrl, server } from '../api'
 import { Markdown } from './Markdown'
 import { Select } from './Select'
 
@@ -89,13 +89,14 @@ export const Solution = ({
                     {sentBy && (
                         <>
                             {' '}
-                            di <a href={`/user/${sentBy}`}>@{sentBy}</a>
+                            di <a href={prependBaseUrl(`/user/${sentBy}`)}>@{sentBy}</a>
                         </>
                     )}
                     {forProblem && (
                         <>
                             {' '}
-                            per il <a href={`/problem/${forProblem}`}>Problema {forProblem}</a>
+                            per il{' '}
+                            <a href={prependBaseUrl(`/problem/${forProblem}`)}>Problema {forProblem}</a>
                         </>
                     )}
                     {!isNaN(d as any) && (