chore(backend): remove LocalDateTime usage, replaced with Instant

src/main/java/com/ddf/vodsystem/controllers/dto/ClipResponse.java

@@ -1,6 +1,6 @@
 package com.ddf.vodsystem.controllers.dto;
 
-import java.time.LocalDateTime;
+import java.time.Instant;
 
 public record ClipResponse(
         Long id,
@@ -8,5 +8,5 @@ public record ClipResponse(
         String title,
         String description,
         Float duration,
-        LocalDateTime createdAt
+        Instant createdAt
 ) {}

src/main/java/com/ddf/vodsystem/entities/Clip.java

@@ -5,7 +5,7 @@ import jakarta.persistence.*;
 import lombok.Data;
 
 
-import java.time.LocalDateTime;
+import java.time.Instant;
 
 @Entity
 @Table(name = "clips")
@@ -28,7 +28,7 @@ public class Clip {
     private String description;
 
     @Column(name = "created_at")
-    private LocalDateTime createdAt;
+    private Instant createdAt;
 
     @Column(name = "width", nullable = false)
     private Integer width;

src/main/java/com/ddf/vodsystem/entities/Stream.java

@@ -4,7 +4,7 @@ import jakarta.persistence.*;
 import lombok.Data;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 
-import java.time.LocalDateTime;
+import java.time.Instant;
 
 @Entity
 @Table(name = "streams")
@@ -21,11 +21,11 @@ public class Stream {
     private User user;
 
     @Column(name = "start_time")
-    private LocalDateTime startDate;
+    private Instant startDate;
 
     @Column(name = "end_time")
-    private LocalDateTime endDate;
+    private Instant endDate;
 
     @Column(name = "last_seen")
-    private LocalDateTime lastSeen;
+    private Instant lastSeen;
 }

src/main/java/com/ddf/vodsystem/entities/User.java

@@ -3,7 +3,7 @@ package com.ddf.vodsystem.entities;
 import jakarta.persistence.*;
 import lombok.Data;
 
-import java.time.LocalDateTime;
+import java.time.Instant;
 
 @Entity
 @Table(name = "users")
@@ -33,7 +33,7 @@ public class User {
     private Integer role; // 0: user, 1: admin
 
     @Column(name = "created_at")
-    private LocalDateTime createdAt;
+    private Instant createdAt;
 
     @Column(name = "stream_key")
     private String streamKey;

src/main/java/com/ddf/vodsystem/repositories/StreamRepository.java

@@ -5,7 +5,7 @@ import com.ddf.vodsystem.entities.User;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
-import java.time.LocalDateTime;
+import java.time.Instant;
 import java.util.List;
 import java.util.Optional;
 
@@ -13,5 +13,5 @@ import java.util.Optional;
 public interface StreamRepository extends JpaRepository<Stream, Long> {
     Optional<Stream> findByUserAndEndDateIsNull(User user);
     List<Stream> findByUser(User user);
-    List<Stream> findByEndDateIsNullAndLastSeenBefore(LocalDateTime cutoff);
+    List<Stream> findByEndDateIsNullAndLastSeenBefore(Instant cutoff);
 }

src/main/java/com/ddf/vodsystem/services/ClipService.java

@@ -8,7 +8,7 @@ import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.time.LocalDateTime;
+import java.time.Instant;
 import java.util.List;
 import java.util.Optional;
 import java.util.concurrent.ExecutionException;
@@ -208,7 +208,7 @@ public class ClipService {
         clip.setUser(user);
         clip.setTitle(options.getTitle() != null ? options.getTitle() : "Untitled Clip");
         clip.setDescription(options.getDescription() != null ? options.getDescription() : "");
-        clip.setCreatedAt(LocalDateTime.now());
+        clip.setCreatedAt(Instant.now());
         clip.setWidth(options.getWidth());
         clip.setHeight(options.getHeight());
         clip.setFps(options.getFps());

src/main/java/com/ddf/vodsystem/services/StreamService.java

@@ -12,7 +12,7 @@ import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.time.LocalDateTime;
+import java.time.Instant;
 import java.util.*;
 
 @Service
@@ -37,7 +37,7 @@ public class StreamService {
             throw new AlreadyStreaming("User " + user.getUsername() + " is already streaming.");
         });
 
-        LocalDateTime now = LocalDateTime.now();
+        Instant now = Instant.now();
         Stream stream = new Stream();
         stream.setUser(user);
         stream.setStartDate(now);
@@ -52,7 +52,7 @@ public class StreamService {
                 .orElseThrow(() -> new IllegalStateException(
                         "No active stream found for user " + user.getUsername()));
 
-        stream.setEndDate(LocalDateTime.now());
+        stream.setEndDate(Instant.now());
         streamRepository.saveAndFlush(stream);
     }
 
@@ -63,7 +63,7 @@ public class StreamService {
                 .orElseThrow(() -> new IllegalStateException(
                         "No active stream found for user " + user.getUsername()));
 
-        stream.setLastSeen(LocalDateTime.now());
+        stream.setLastSeen(Instant.now());
         streamRepository.saveAndFlush(stream);
     }
 
@@ -97,11 +97,11 @@ public class StreamService {
     @Scheduled(fixedDelay = 30_000)
     @Transactional
     public void endStaleStreams() {
-        LocalDateTime cutoff = LocalDateTime.now().minusSeconds(HEARTBEAT_TIMEOUT_SECONDS);
+        Instant cutoff = Instant.now().minusSeconds(HEARTBEAT_TIMEOUT_SECONDS);
         List<Stream> stale = streamRepository.findByEndDateIsNullAndLastSeenBefore(cutoff);
         if (stale.isEmpty()) return;
 
-        LocalDateTime now = LocalDateTime.now();
+        Instant now = Instant.now();
         for (Stream stream : stale) {
             stream.setEndDate(now);
             logger.warn("Stream {} for user {} ended due to heartbeat timeout", stream.getId(), stream.getUser().getUsername());

src/main/java/com/ddf/vodsystem/services/UserService.java

@@ -17,7 +17,7 @@ import org.springframework.stereotype.Service;
 import java.io.IOException;
 import java.security.GeneralSecurityException;
 import java.security.SecureRandom;
-import java.time.LocalDateTime;
+import java.time.Instant;
 import java.util.Collections;
 import java.util.HexFormat;
 import java.util.Optional;
@@ -77,7 +77,7 @@ public class UserService {
 
         if (existingUser.isEmpty()) {
             user.setRole(0);
-            user.setCreatedAt(LocalDateTime.now());
+            user.setCreatedAt(Instant.now());
             user.setStreamKey(generateStreamKey());
             return userRepository.saveAndFlush(user);
         }

src/main/java/com/ddf/vodsystem/services/media/CompressionService.java

@@ -38,7 +38,7 @@ public class CompressionService {
                 outputFile,
                 clipOptions
         );
-        CommandOutput result = CommandRunner.run(command, line -> setProgress(line, progress, clipOptions.getDuration()));
+        CommandOutput result = CommandRunner.run(command, line -> CommandRunner.setProgress(line, progress, clipOptions.getDuration()));
         progress.markComplete();
 
         return CompletableFuture.completedFuture(result);

src/main/java/com/ddf/vodsystem/services/media/StreamActionsService.java

@@ -72,6 +72,7 @@ public class StreamActionsService {
             logger.info("Saving section with ({} segments) to '{}'",
                     segments.size(), outputFile);
             CommandRunner.run(command, line -> CommandRunner.setProgress(line, progressTracker, duration));
+            progressTracker.markComplete();
 
             return CompletableFuture.completedFuture(outputFile);
         } catch (Exception e) {

src/main/resources/application-local.properties

@@ -1,6 +1,6 @@
 spring.docker.compose.file=docker-compose.dev.yml
 
-media.temp.inputs=./video/inputs
+media.temp.inputs=./videos/inputs
 media.temp.outputs=./videos/outputs
 media.users=${MEDIA_DATA}
 media.streams=${STREAM_DATA}

src/main/resources/application.properties

@@ -32,3 +32,6 @@ media.streams=/app/stream/
 
 ## Server Configuration
 server.servlet.session.timeout=30m
+
+# Serialize Instant as ISO-8601 UTC string (not epoch seconds)
+spring.jackson.serialization.write-dates-as-timestamps=false

src/main/resources/db/schema.sql

@@ -10,7 +10,7 @@ CREATE TABLE IF NOT EXISTS users (
     name VARCHAR(100) NOT NULL,
     profile_picture_url VARCHAR(255),
     role INTEGER DEFAULT 0,
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
     stream_key VARCHAR(64) NOT NULL UNIQUE
 );
 
@@ -29,7 +29,7 @@ CREATE TABLE IF NOT EXISTS clips (
     user_id BIGINT NOT NULL,
     title VARCHAR(255) NOT NULL,
     description TEXT,
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
     width INTEGER NOT NULL,
     height INTEGER NOT NULL,
     fps FLOAT NOT NULL,