[chore] Add support for mapinfo v3 (which is essentially the same thing as version 2)

(cherry picked from commit 83f23c5c16)

src/shared/models/maps/info/map-info.model.ts

@@ -1,8 +1,9 @@
 import { BsvMapCharacteristic, BsvMapDifficultyType } from "../beat-saver.model";
 import { RawMapInfoDataV2 } from "./raw-map-info-v2.model";
+import { RawMapInfoDataV3 } from "./raw-map-info-v3.model";
 import { RawMapInfoDataV4 } from "./raw-map-info-v4.model";
 
-export type AnyRawMapInfo = RawMapInfoDataV2 | RawMapInfoDataV4;
+export type AnyRawMapInfo = RawMapInfoDataV2 | RawMapInfoDataV3 | RawMapInfoDataV4;
 
 // interfaces/mapInfo.ts
 export interface MapInfo {

src/shared/models/maps/info/raw-map-info-v2.model.ts

@@ -1,7 +1,7 @@
 import { BsvMapCharacteristic, BsvMapDifficultyType } from "../beat-saver.model";
 
 export interface RawMapInfoDataV2 {
-    _version: string;
+    _version: `2.${number}.${number}`;
     _songName: string;
     _songSubName: string;
     _songAuthorName: string;

src/shared/models/maps/info/raw-map-info-v3.model.ts

@@ -0,0 +1,39 @@
+import { SongDetailDiffCharactertistic, SongDiffName } from "../song-details-cache/song-details-cache.model";
+
+export interface RawMapInfoDataV3 {
+    _version: `3.${number}.${number}`;
+    _songName: string;
+    _songSubName: string;
+    _songAuthorName: string;
+    _levelAuthorName: string;
+    _beatsPerMinute: number;
+    _songTimeOffset: number;
+    _shuffle: number;
+    _shufflePeriod: number;
+    _previewStartTime: number;
+    _previewDuration: number;
+    _songFilename: string;
+    _coverImageFilename: string;
+    _environmentName: string;
+    _environmentNames?: string[];
+    _allDirectionsEnvironmentName: string;
+    _difficultyBeatmapSets: RawDifficultySetV3[];
+}
+
+interface RawDifficultySetV3 {
+    _beatmapCharacteristicName: SongDetailDiffCharactertistic;
+    _difficultyBeatmaps: RawMapDifficultyV3[];
+}
+
+interface RawMapDifficultyV3 {
+    _difficulty: SongDiffName;
+    _difficultyRank: number;
+    _beatmapFilename: string;
+    _noteJumpMovementSpeed: number;
+    _noteJumpStartBeatOffset: number;
+    _beatmapColorSchemeIdx?: number;
+    _environmentNameIdx?: number;
+    _customData?: {
+        _difficultyLabel?: string;
+    }
+}

src/shared/models/maps/info/raw-map-info-v4.model.ts

@@ -2,7 +2,7 @@ import { BsvMapCharacteristic, BsvMapDifficultyType } from "../beat-saver.model"
 
 // interfaces/version4.ts
 export interface RawMapInfoDataV4 {
-    version: string;
+    version: `4.${number}.${number}`;
     song: {
       title: string;
       subTitle: string;

src/shared/parsers/maps/map-info.parser.ts

@@ -1,5 +1,6 @@
 import { MapDifficulty, MapInfo, AnyRawMapInfo } from "shared/models/maps/info/map-info.model";
 import { RawMapInfoDataV2 } from "shared/models/maps/info/raw-map-info-v2.model";
+import { RawMapInfoDataV3 } from "shared/models/maps/info/raw-map-info-v3.model";
 import { RawMapInfoDataV4 } from "shared/models/maps/info/raw-map-info-v4.model";
 
 function parseVersion2(data: RawMapInfoDataV2): MapInfo {
@@ -34,6 +35,11 @@ function parseVersion2(data: RawMapInfoDataV2): MapInfo {
     };
 }
 
+function parseVersion3(data: RawMapInfoDataV3): MapInfo {
+    // It's the same treatment as the version 2
+    return parseVersion2(data as unknown as RawMapInfoDataV2)
+}
+
 function parseVersion4(data: RawMapInfoDataV4): MapInfo {
     return {
         version: data.version,
@@ -64,7 +70,7 @@ function parseVersion4(data: RawMapInfoDataV4): MapInfo {
 }
 
 export function parseMapInfoDat(info: AnyRawMapInfo): MapInfo | never {
-    const version = (info as RawMapInfoDataV2)?._version || (info as RawMapInfoDataV4)?.version;
+    const version = (info as RawMapInfoDataV2)?._version || (info as RawMapInfoDataV3)?._version || (info as RawMapInfoDataV4)?.version;
 
     if(!version) {
         throw new Error('Cannot determine info.dat version');
@@ -74,6 +80,10 @@ export function parseMapInfoDat(info: AnyRawMapInfo): MapInfo | never {
         return parseVersion2(info as RawMapInfoDataV2);
     }
 
+    if (version.startsWith('3.')) {
+        return parseVersion3(info as RawMapInfoDataV3);
+    }
+
     if (version.startsWith('4.')) {
         return parseVersion4(info as RawMapInfoDataV4);
     }