[REFACTOR] MIDI 이벤트 저장 방식 수정

src/main/java/com/mr/domain/playing/entity/MidiEventData.java

@@ -0,0 +1,84 @@
+package com.mr.domain.playing.entity;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.mr.domain.playing.entity.enums.MidiType;
+import com.mr.domain.playing.exception.PlayingErrorStatus;
+import com.mr.global.apipayload.exception.GeneralException;
+import lombok.Getter;
+
+@Getter
+public class MidiEventData {
+
+    // 동일 timestamp 내 순서 값
+    @JsonProperty("sequence")
+    private final Integer sequence;
+
+    private final MidiType type;
+    private final Integer pitch;
+    private final Integer velocity;
+
+    @JsonProperty("timestamp_ms")
+    private final Long timestampMs;
+
+    private MidiEventData(
+            Integer sequence,
+            MidiType type,
+            Integer pitch,
+            Integer velocity,
+            Long timestampMs
+    ) {
+        validateSequence(sequence);
+        validateMidiType(type);
+        validatePitch(pitch);
+        validateVelocity(velocity);
+        validateTimestampMs(timestampMs);
+
+        this.sequence = sequence;
+        this.type = type;
+        this.pitch = pitch;
+        this.velocity = velocity;
+        this.timestampMs = timestampMs;
+    }
+
+    @JsonCreator
+    public static MidiEventData of(
+            @JsonProperty("sequence") Integer sequence,
+            @JsonProperty("type") MidiType type,
+            @JsonProperty("pitch") Integer pitch,
+            @JsonProperty("velocity") Integer velocity,
+            @JsonProperty("timestamp_ms") Long timestampMs
+    ) {
+        return new MidiEventData(sequence, type, pitch, velocity, timestampMs);
+    }
+
+    private static void validateSequence(Integer sequence) {
+        if (sequence == null || sequence < 0) {
+            throw new GeneralException(PlayingErrorStatus.INVALID_MIDI_SEQUENCE);
+        }
+    }
+
+    private static void validateMidiType(MidiType type) {
+        if (type == null) {
+            throw new GeneralException(PlayingErrorStatus.MISSING_MIDI_TYPE);
+        }
+    }
+
+    private static void validatePitch(Integer pitch) {
+        if (pitch == null || pitch < 0 || pitch > 127) {
+            throw new GeneralException(PlayingErrorStatus.INVALID_PITCH_RANGE);
+        }
+    }
+
+    private static void validateVelocity(Integer velocity) {
+        if (velocity == null || velocity < 0 || velocity > 127) {
+            throw new GeneralException(PlayingErrorStatus.INVALID_VELOCITY_RANGE);
+        }
+    }
+
+    private static void validateTimestampMs(Long timestampMs) {
+        if (timestampMs == null || timestampMs < 0) {
+            throw new GeneralException(PlayingErrorStatus.INVALID_TIMESTAMP);
+        }
+    }
+}