allow configurable base url

docker-composer.override.example.yml

@@ -7,3 +7,4 @@ services:
 #      - ./logs:/app/logs # uncomment to get access to logs more easily
     environment:
       DISCORD_TOKEN: "your_discord_token_here"
+      BASE_URL: "https://example.com" # replace with your actual base URL. THis will display on the template pages

src/main/java/me/youhavetrouble/inviter/Main.java

@@ -22,6 +22,8 @@ public class Main {
 
     public static final Logger LOGGER = LoggerFactory.getLogger("Inviter");
 
+    public static String baseUrl;
+
     private static JDA jda;
     private static DiscordInviteManager discordInviteManager;
     private static ApiServer apiServer;
@@ -31,6 +33,15 @@ public class Main {
 
         String token = System.getenv("DISCORD_TOKEN");
 
+        String baseUrlRaw = System.getenv("BASE_URL");
+        if (baseUrlRaw == null || baseUrlRaw.isEmpty()) {
+            baseUrl = "https://example.com";
+            LOGGER.warn("BASE_URL environment variable is not set. Using default: {}", baseUrl);
+        } else {
+            if (baseUrlRaw.endsWith("/")) baseUrlRaw = baseUrlRaw.substring(0, baseUrlRaw.length() - 1);
+            baseUrl = baseUrlRaw;
+        }
+
         if (token == null || token.isEmpty()) {
             LOGGER.error("Discord token is not set. Please set the DISCORD_TOKEN environment variable.");
             System.exit(1);

src/main/java/me/youhavetrouble/inviter/http/endpoints/GetDiscordInviteByGuildId.java

@@ -26,6 +26,7 @@ public class GetDiscordInviteByGuildId implements EndpointHandler {
         try (InputStream resource = this.getClass().getResourceAsStream("/template/invites-paused.html")) {
             assert resource != null;
             invitesDisabledTemplate = new String(resource.readAllBytes());
+            invitesDisabledTemplate = invitesDisabledTemplate.replaceAll("\\{\\{base_url}}", Main.baseUrl);
         } catch (IOException | NullPointerException e) {
             Main.LOGGER.warn("Failed to load template for invites disabled page", e);
         }
@@ -35,6 +36,7 @@ public class GetDiscordInviteByGuildId implements EndpointHandler {
         try (InputStream resource = this.getClass().getResourceAsStream("/template/guild-not-supported.html")) {
             assert resource != null;
             botNotInGuildTemplate = new String(resource.readAllBytes());
+            botNotInGuildTemplate = botNotInGuildTemplate.replaceAll("\\{\\{base_url}}", Main.baseUrl);
         } catch (IOException | NullPointerException e) {
             Main.LOGGER.warn("Failed to load template for guild not supported page", e);
         }

src/main/java/me/youhavetrouble/inviter/http/endpoints/MainEndpoint.java

@@ -20,6 +20,7 @@ public class MainEndpoint implements EndpointHandler {
         try (InputStream resource = this.getClass().getResourceAsStream("/template/index.html")) {
             rawTemplate = new String(resource.readAllBytes());
             rawTemplate = rawTemplate.replaceAll("\\{\\{discord_app_id}}", Main.getJda().getSelfUser().getApplicationId());
+            rawTemplate = rawTemplate.replaceAll("\\{\\{base_url}}", Main.baseUrl);
         } catch (IOException | NullPointerException e) {
             Main.LOGGER.warn("Failed to load template for main endpoint", e);
         }

src/main/resources/template/guild-not-supported.html

@@ -10,7 +10,7 @@
     <meta name="og:type" content="website"/>
     <meta name="og:title" content="Discord Inviter"/>
     <meta name="og:description" content="A simple tool to invite users to a Discord server"/>
-    <meta name="og:url" content="https://inviter.yht.one"/>
+    <meta name="og:url" content="{{base_url}}"/>
     <meta name="twitter:title" content="Discord Inviter"/>
     <meta name="twitter:description" content="A simple tool to invite users to a Discord server"/>
     <title>Discord Inviter</title>

src/main/resources/template/index.html

@@ -10,7 +10,7 @@
     <meta name="og:type" content="website"/>
     <meta name="og:title" content="Discord Inviter"/>
     <meta name="og:description" content="A simple tool to invite users to a Discord server"/>
-    <meta name="og:url" content="https://inviter.yht.one"/>
+    <meta name="og:url" content="{{base_url}}"/>
     <meta name="twitter:title" content="Discord Inviter"/>
     <meta name="twitter:description" content="A simple tool to invite users to a Discord server"/>
     <title>Discord Inviter</title>
@@ -117,7 +117,7 @@
                     Enable developer mode
                 </a> in your discord client and copy your guilds ID.
             </li>
-            <li>Now you can use <span class="highlight">https://inviter.yht.one/invite/&lt;your_guild_id&gt;</span></li>
+            <li>Now you can use <span class="highlight">{{base_url}}/invite/&lt;your_guild_id&gt;</span></li>
         </ol>
     </div>
 </main>

src/main/resources/template/invites-paused.html

@@ -10,7 +10,7 @@
     <meta name="og:type" content="website"/>
     <meta name="og:title" content="Discord Inviter"/>
     <meta name="og:description" content="A simple tool to invite users to a Discord server"/>
-    <meta name="og:url" content="https://inviter.yht.one"/>
+    <meta name="og:url" content="{{base_url}}"/>
     <meta name="twitter:title" content="Discord Inviter"/>
     <meta name="twitter:description" content="A simple tool to invite users to a Discord server"/>
     <title>Discord Inviter</title>