igir/dist/src/modules/dats/datDiscMerger.js

🕹 A zero-setup ROM collection manager that sorts, filters, extracts or archives, patches, and reports on collections of any size on any OS.

import path from "node:path";
import { ProgressBarSymbol } from "../../console/progressBar.js";
import MergedDiscGame from "../../models/dats/mergedDiscGame.js";
import IntlUtil from "../../utils/intlUtil.js";
import Module from "../module.js";
import GameGrouper from "./utils/gameGrouper.js";
class DATDiscMerger extends Module {
  options;
  constructor(options, progressBar) {
    super(progressBar, DATDiscMerger.name);
    this.options = options;
  }
  /**
   * Merge {@link Game}s.
   */
  merge(dat) {
    if (!this.options.getMergeDiscs()) {
      this.prefixedLogger.trace(`${dat.getName()}: not merging discs`);
      return dat;
    }
    if (dat.getGames().length === 0) {
      this.prefixedLogger.trace(`${dat.getName()}: no games to merge`);
      return dat;
    }
    this.prefixedLogger.trace(
      `${dat.getName()}: merging ${IntlUtil.toLocaleString(dat.getGames().length)} game${dat.getGames().length === 1 ? "" : "s"}`
    );
    this.progressBar.setSymbol(ProgressBarSymbol.DAT_MERGE_SPLIT);
    this.progressBar.resetProgress(dat.getGames().length);
    const groupedGames = this.groupGames(dat.getGames());
    const newDat = dat.withGames(groupedGames);
    this.prefixedLogger.trace(
      `${newDat.getName()}: merged to ${IntlUtil.toLocaleString(newDat.getGames().length)} game${newDat.getGames().length === 1 ? "" : "s"}`
    );
    this.prefixedLogger.trace(`${newDat.getName()}: done merging`);
    return newDat;
  }
  groupGames(games) {
    const gameNamesToGames = GameGrouper.groupMultiDiscGames(games, (game) => game.getName());
    return [...gameNamesToGames].flatMap(([gameName, games2]) => {
      if (games2.length === 1) {
        return games2[0];
      }
      const roms = games2.flatMap((game) => game.getRoms());
      const romNamesToCount = roms.reduce((map, rom) => {
        map.set(rom.getName(), (map.get(rom.getName()) ?? 0) + 1);
        return map;
      }, /* @__PURE__ */ new Map());
      const duplicateRomNames = [...romNamesToCount].filter(([, count]) => count > 1).map(([romName]) => romName).toSorted((a, b) => a.localeCompare(b));
      const subGames = duplicateRomNames.length > 1 ? (
        // De-conflict the filenames by adding a subfolder of the original game's name
        games2.map(
          (game) => game.withProps({
            roms: game.getRoms().map((rom) => rom.withName(path.join(game.getName(), rom.getName())))
          })
        )
      ) : games2;
      return new MergedDiscGame({
        name: gameName,
        subGames
      });
    });
  }
}
export {
  DATDiscMerger as default
};
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