complete sekai-master-db song(music) parse

- added charset param in database import command
- moved PostgresConfig to sekai-db proj
- added dependency gson
- added data_tool/sekai_master_db with a Music which can parse sekai-master-db musics.json and convert it to the Song object

gradle.properties

@@ -1,7 +1,7 @@
 ## Project Configurations
 
 # Proj Metadata
-projVersion = 0.6
+projVersion = 0.7
 
 
 # Dependencies

sekai-cli/build.gradle

@@ -16,8 +16,10 @@ dependencies {
 	
 	implementation rootProject
 	implementation project(":sekai-meta")
+	implementation project(":sekai-database")
 	
 	implementation "org.postgresql:postgresql:${lib_postgres_driver}"
+	implementation "com.google.code.gson:gson:${lib_gson}"
 	
 	testImplementation "org.junit.jupiter:junit-jupiter-api:${lib_junit_v}"
 	testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:${lib_junit_v}"

sekai-cli/gradle.properties

@@ -1,7 +1,8 @@
 ## Project Configurations
 
 # Proj Metadata
-moduleVersion = 0.5.2
+moduleVersion = 0.5.3
 
 # dependencies
 lib_postgres_driver = 42.5.1
+lib_gson = 2.10

sekai-cli/src/main/java/cc/sukazyo/sekai_cli/Config.java

@@ -1,6 +1,6 @@
 package cc.sukazyo.sekai_cli;
 
-import cc.sukazyo.sekai_cli.db.PostgresConfig;
+import cc.sukazyo.sekai_db.PostgresConfig;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
@@ -29,7 +29,7 @@ public class Config {
 	
 	private PostgresConfig db = null;
 	public PostgresConfig db () {
-		if (db == null) db = new PostgresConfig(this);
+		if (db == null) db = new PostgresConfig(db_host, db_name, db_schema, db_auth_user, db_auth_pwd);
 		return db;
 	}
 	

sekai-cli/src/main/java/cc/sukazyo/sekai_cli/client/Database.java

@@ -1,8 +1,17 @@
 package cc.sukazyo.sekai_cli.client;
 
+import cc.sukazyo.sekai_cli.data_tool.sekai_master_db.Music;
+import cc.sukazyo.sekai_scores.Song;
+import com.google.gson.JsonIOException;
+import com.google.gson.JsonSyntaxException;
+
+import java.io.IOException;
+import java.nio.charset.Charset;
+import java.nio.charset.IllegalCharsetNameException;
+import java.nio.charset.UnsupportedCharsetException;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.Arrays;
+import java.util.ArrayList;
 import java.util.List;
 
 import static cc.sukazyo.sekai_cli.Log._debug;
@@ -12,11 +21,29 @@ public class Database {
 	
 	public static void main (String[] args) {
 		
-		final List<String> $args = Arrays.asList(args);
+		final List<String> $args = new ArrayList<>(List.of(args));
 		
 		final String subcommand = $args.remove(0);
 		if (subcommand.equals("import")) {
-			if ($args.isEmpty()) {
+			
+			int ii;
+			Charset charset = Charset.defaultCharset();
+			if ((ii = $args.indexOf("--charset")) != -1) {
+				$args.remove(ii);
+				try { charset = Charset.forName($args.remove(ii)); }
+				catch (IllegalCharsetNameException e) {
+					_user("db_import: unknown/illegal charset " + e.getCharsetName());
+					_debug(e);
+					return;
+				} catch (UnsupportedCharsetException e) {
+					_user("db_import: unsupported charset by jvm: charset " + e.getCharsetName());
+					_debug(e);
+					return;
+				}
+			}
+			_debug("db_import: will use charset " + charset.displayName());
+			
+			if ($args.size() != 2) {
 				System.out.println("""
 						database import: <type> <file-path>
 						currently available types:
@@ -29,16 +56,24 @@ public class Database {
 				catch (IndexOutOfBoundsException e) {
 					_user("database import: need a file path.");
 					_debug(e);
+					return;
 				}
 				switch ($args.remove(0)) {
-					case "song" ->
-							_user("type song: WIP");
+					case "song" -> {
+						try {
+							final Song[] songs = Music.toSongArray(Music.readFrom(file.toFile(), charset));
+						} catch (IOException | JsonIOException | JsonSyntaxException e) {
+							_user("error while parsing song file: " + e.getMessage());
+							_debug(e);
+						}
+					}
 					case "song-difficulty" ->
 							_user("type song-difficulty: WIP");
 					default ->
 							_user("unavailable type.\ncurrently available types:\n  song\n  song-difficulty");
 				}
 			}
+			
 		}
 		
 	}

sekai-cli/src/main/java/cc/sukazyo/sekai_cli/data_tool/sekai_master_db/Music.java

@@ -0,0 +1,65 @@
+package cc.sukazyo.sekai_cli.data_tool.sekai_master_db;
+
+import cc.sukazyo.sekai_scores.DifficultiesEmpty;
+import cc.sukazyo.sekai_scores.Song;
+import cc.sukazyo.sekai_scores.SongUnit;
+import com.google.gson.Gson;
+import com.google.gson.JsonIOException;
+import com.google.gson.JsonSyntaxException;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.nio.charset.Charset;
+import java.time.*;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Music {
+	
+	public int id;
+	public int seq;
+	public int releaseConditionId;
+	public String[] categories;
+	public String title;
+	public String pronunciation;
+	public String lyricist;
+	public String composer;
+	public String arranger;
+	public int dancerCount;
+	public int selfDancerPosition;
+	public String assetbundleName;
+	public String liveTalkBackgroundAssetbundleName;
+	public long publishedAt;
+	public int liveStageId;
+	public int filterSec;
+	
+	public static Music[] readFrom (File sekaiMusicsFile, Charset charset) throws IOException, JsonIOException, JsonSyntaxException {
+		return new Gson().fromJson(new FileReader(sekaiMusicsFile, charset), Music[].class);
+	}
+	
+	public SongUnit getUnit () {
+		return SongUnit.getBySeq((seq/100000) % 10);
+	}
+	
+	public Song toSong () {
+		return new Song(
+				id, title, getUnit(), new DifficultiesEmpty(),
+				null, getOrNull(arranger), getOrNull(composer), getOrNull(lyricist),
+				null, null,
+				ZonedDateTime.ofInstant(Instant.ofEpochMilli(publishedAt), ZoneOffset.UTC),
+				new String[]{}
+		);
+	}
+	
+	public static Song[] toSongArray (Music... musics) {
+		final List<Song> songs = new ArrayList<>();
+		for (Music i : musics) songs.add(i.toSong());
+		return songs.toArray(new Song[0]);
+	}
+	
+	private String getOrNull (String name) {
+		return name.equals("-") ? null : name;
+	}
+	
+}

sekai-database/build.gradle

@@ -1,19 +1,48 @@
+import java.nio.charset.Charset
+import java.nio.charset.StandardCharsets
+
 plugins {
     id 'java'
 }
 
-group 'cc.sukazyo'
-version projVersion
-
 repositories {
     mavenCentral()
 }
 
 dependencies {
+    
+    compileOnly "com.github.spotbugs:spotbugs-annotations:${lib_spotbugs_v}"
+    
     testImplementation "org.junit.jupiter:junit-jupiter-api:${lib_junit_v}"
     testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:${lib_junit_v}"
+    
 }
 
+final JavaVersion proj_java = JavaVersion.VERSION_17
+final Charset proj_source_encoding = StandardCharsets.UTF_8
+
+group 'cc.sukazyo'
+version projVersion
+
 test {
     useJUnitPlatform()
 }
+
+java {
+    
+    sourceCompatibility proj_java
+    targetCompatibility proj_java
+    
+    withSourcesJar()
+    
+}
+
+tasks.withType(JavaCompile) {
+    options.encoding = proj_source_encoding.name()
+}
+
+tasks.withType(Javadoc) {
+    options.encoding = proj_source_encoding.name()
+    options.docEncoding = proj_source_encoding.name()
+    options.charSet = proj_source_encoding.name()
+}

sekai-database/src/main/java/cc/sukazyo/sekai_db/PostgresConfig.java

@@ -1,6 +1,4 @@
-package cc.sukazyo.sekai_cli.db;
-
-import cc.sukazyo.sekai_cli.Config;
+package cc.sukazyo.sekai_db;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
@@ -12,36 +10,32 @@ public class PostgresConfig {
 	
 	@Nonnull public final String host;
 	@Nonnull public final String database;
-	@Nullable public final String struct;
+	@Nullable public final String schema;
 	@Nonnull public final String user;
 	@Nonnull public final String token;
 	
 	public PostgresConfig (
-			@Nonnull String host, @Nonnull String database, @Nullable String struct,
+			@Nonnull String host, @Nonnull String database, @Nullable String schema,
 			@Nonnull String user, @Nonnull String token
 	) {
 		this.host = host;
 		this.database = database;
-		this.struct = struct;
+		this.schema = schema;
 		this.user = user;
 		this.token = token;
 	}
 	
-	public PostgresConfig (Config global) {
-		this(global.db_host, global.db_name, global.db_schema, global.db_auth_user, global.db_auth_pwd);
-	}
-	
 	@Override
 	public String toString () {
 		return String.format("jdbc:postgresql://%s/%s", host, database);
 	}
 	
-	public String struct() {
-		return struct;
+	public String schema () {
+		return schema;
 	}
 	
 	public String table (String table) {
-		return (struct == null ? "" : '"' + struct() + '"' + ".") + '"' + table + '"';
+		return (schema == null ? "" : '"' + schema() + '"' + ".") + '"' + table + '"';
 	}
 	
 	public Connection connect () throws SQLException {

src/main/java/cc/sukazyo/sekai_scores/DifficultiesEmpty.java

@@ -0,0 +1,16 @@
+package cc.sukazyo.sekai_scores;
+
+import javax.annotation.Nonnull;
+import java.util.function.Consumer;
+
+public class DifficultiesEmpty implements Difficulties{
+	
+	@Override
+	public Difficulty[] getAll () {
+		return new Difficulty[0];
+	}
+	
+	@Override
+	public void forEach (@Nonnull Consumer<Difficulty> action) {}
+	
+}

src/main/java/cc/sukazyo/sekai_scores/SongUnit.java

@@ -30,7 +30,7 @@ public enum SongUnit {
 	_X(-1, "セカイ")
 	;
 	
-	public SongUnit getBySeq(int seq) {
+	public static SongUnit getBySeq(int seq) {
 		return switch (seq) {
 			case 1 -> PIAPRO;
 			case 2 -> LIGHT_SOUND;