Add lottie renderer for stickers

README.md

@@ -27,6 +27,8 @@ Go to [`https://duncte.bot/invite`][inviteLink] and follow the steps on the webs
 While self-hosting is very much possible with Docker, please note that no support will be provided with self-hosting.
 The code of this bot was made public for people who want to see how the bot works or want to contribute to it.
 
+# Used external libraries
+Skybot relies on [this lib](https://github.com/sot-tech/LottieConverter/releases/tag/r0.2) for lottie conversion.
 
 # Support
 [![Support Server](https://discord.com/api/guilds/191245668617158656/embed.png?style=banner2)](https://duncte.bot/server)

assets

@@ -0,0 +1 @@
+bot/assets/

bot/Dockerfile

@@ -17,6 +17,8 @@ FROM azul/zulu-openjdk-alpine:19-jre
 # also add some fonts
 RUN apk add --no-cache libstdc++ fontconfig font-noto
 
+COPY ./assets/lottieconverter_musl /skybot/assets/lottieconverter
+
 WORKDIR /skybot
 COPY --from=builder /skybot/bot/build/libs/bot*-prod.jar ./skybot.jar
 

bot/src/main/java/ml/duncte123/skybot/commands/utils/EnlargeCommand.java

@@ -36,6 +36,9 @@
 import net.dv8tion.jda.api.utils.FileUpload;
 import org.jetbrains.annotations.NotNull;
 
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
 import java.util.List;
 
 import static me.duncte123.botcommons.messaging.MessageUtils.sendMsg;
@@ -59,12 +62,22 @@ public void execute(@NotNull CommandContext ctx) {
             final StickerItem sticker = stickers.get(0);
             final StickerFormat formatType = sticker.getFormatType();
 
-            if (formatType == StickerFormat.UNKNOWN || formatType == StickerFormat.LOTTIE) {
-                sendMsg(ctx, "The sticker supplied could not be rendered");
-                return;
+            switch (formatType) {
+                case GIF:
+                    this.uploadFile(sticker.getIconUrl(), ctx);
+                    break;
+                case PNG:
+                case APNG:
+                    this.uploadFile(sticker.getIconUrl().replace("apng", "png"), ctx);
+                    break;
+                case LOTTIE:
+                    this.sendLottieGif(sticker.getIconUrl(), sticker.getName(), ctx);
+                    break;
+                default:
+                    sendMsg(ctx, "The sticker supplied could not be rendered");
+                    break;
             }
 
-            this.uploadFile(sticker.getIconUrl().replace("apng", "png"), ctx);
             return;
         }
 
@@ -114,6 +127,54 @@ public void execute(@NotNull CommandContext ctx) {
         this.uploadFile(emojiUrl, ctx);
     }
 
+    // TODO: use virtual threads
+    private void sendLottieGif(final String lottieUrl, final String stickerName, final CommandContext ctx) {
+        WebUtils.ins.getText(lottieUrl, (it) -> it.setRateLimiter(RateLimiter.directLimiter())).async(
+            (lottieJson) -> {
+                try {
+                    final var bytes = this.renderLottie(lottieJson);
+
+                    ctx.getChannel()
+                        .sendFiles(
+                            FileUpload.fromData(bytes, "%s.gif".formatted(stickerName))
+                        )
+                        .setMessageReference(ctx.getMessage())
+                        .queue();
+                } catch (final IOException e) {
+                    LOGGER.error("Failed to render lottie", e);
+                    sendMsg(ctx, "Failed to render lottie: " + e.getMessage());
+                }
+            },
+            (error) -> {
+                Sentry.captureException(error);
+                sendMsg(ctx, "Failed to render lottie: " + error.getMessage());
+            }
+        );
+    }
+
+    private byte[] renderLottie(final String lottieJson) throws IOException {
+        final var tmpFile = File.createTempFile("lottie-json", ".json");
+
+        try (var writer = Files.newBufferedWriter(tmpFile.toPath(), StandardCharsets.UTF_8)) {
+            writer.write(lottieJson);
+        }
+
+        final var programFile = new File("assets/lottieconverter");
+        final var process = new ProcessBuilder()
+            .command(
+                programFile.getAbsolutePath(),
+                "-", "-", "gif", "512x512", "60"
+            )
+            .redirectInput(ProcessBuilder.Redirect.from(tmpFile))
+            .start();
+
+        try (var stream = process.getInputStream()) {
+            return stream.readAllBytes();
+        } finally {
+            tmpFile.delete();
+        }
+    }
+
     private void uploadFile(final String url, final CommandContext ctx) {
         WebUtils.ins.getByteStream(url, (it) -> it.setRateLimiter(RateLimiter.directLimiter())).async(
             (bytes) -> {

build.gradle.kts

@@ -45,7 +45,7 @@ allprojects {
     }
 
     tasks.withType<Wrapper> {
-        gradleVersion = "8.2.1"
+        gradleVersion = "8.5"
         distributionType = Wrapper.DistributionType.BIN
     }
 }

docker-compose.yml

@@ -46,7 +46,7 @@ services:
 
             # Options are: psql, web
             - USE_DATABASE=psql
-            - JDBC_URI=jdbc:postgresql://localhost:5432/skybot?user=root&password=root
+            - JDBC_URI=jdbc:postgresql://localhost:5433/skybot?user=root&password=postgres
             # - REDIS_HOST=localhost
             - REDIS_HOST=disabled
     dashboard:

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.2.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
 networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

shared/src/main/kotlin/ml/duncte123/skybot/database/PostgreDatabase.kt

@@ -49,6 +49,9 @@ class PostgreDatabase(jdbcURI: String, ohShitFn: (Int, Int) -> Unit = { _, _ ->
         }
 
     init {
+        // Needed for docker it seems
+        Class.forName("org.postgresql.ds.PGSimpleDataSource")
+
         val config = HikariConfig()
 
         // IT IS postgresql:// NOT psql://