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// Copyright 2018-2020 Gamebridge.ai authors. All rights reserved. MIT license.import { SerializePropertyOptions } from "./serialize_property.ts";import {  ERROR_DUPLICATE_PROPERTY_KEY,  ERROR_DUPLICATE_SERIALIZE_KEY,} from "./error_messages.ts";
/** Double indexed map of Serialized Property Options * The property options of a Serialize Property can be looked up by both the * property key on the original object, and the serialized property key used * in json * * When adding a key to the map that overlaps the property key or the serialize * key of a parent key any parent entries using those keys will be ignored, even * if no entry for the child map exists */export class SerializePropertyOptionsMap {  private propertyKeyMap = new Map<string | symbol, SerializePropertyOptions>();  private serializedKeyMap = new Map<string, SerializePropertyOptions>();
  // Set of serialized keys to ignore. This is to hide serialized keys on the parent  // when a different property key is overridden for the same serialized key  private propertyKeyIgnoreSet = new Set<string | symbol>();  private serializedKeyIgnoreSet = new Set<string>();
  constructor(private parentMap?: SerializePropertyOptionsMap) {}
  /** Setting a key will throw an error if there are key collisions with either   * an existing property key or serialized key   */  public set(serializePropertyOptions: SerializePropertyOptions): void {    if (this.serializedKeyMap.has(serializePropertyOptions.serializedKey)) {      throw new Error(        `${ERROR_DUPLICATE_SERIALIZE_KEY}: ${serializePropertyOptions.serializedKey}`,      );    }    if (this.propertyKeyMap.has(serializePropertyOptions.propertyKey)) {      throw new Error(        `${ERROR_DUPLICATE_PROPERTY_KEY}: ${serializePropertyOptions.propertyKey.toString()}`,      );    }    this.propertyKeyIgnoreSet.delete(serializePropertyOptions.propertyKey);    this.propertyKeyMap.set(      serializePropertyOptions.propertyKey,      serializePropertyOptions,    );
    this.serializedKeyIgnoreSet.delete(serializePropertyOptions.serializedKey);    this.serializedKeyMap.set(      serializePropertyOptions.serializedKey,      serializePropertyOptions,    );
    // Hide parent property key mappings for previous value of serialized key    const parentSerializedObject = this.parentMap?.getBySerializedKey(      serializePropertyOptions.serializedKey,    );    if (      parentSerializedObject &&      parentSerializedObject.propertyKey !==        serializePropertyOptions.propertyKey    ) {      this.propertyKeyIgnoreSet.add(parentSerializedObject.propertyKey);    }    // Hide parent serializedKey mapping for previous value of property key    const parentPropertyObject = this.parentMap?.getByPropertyKey(      serializePropertyOptions.propertyKey,    );    if (      parentPropertyObject &&      parentPropertyObject.serializedKey !==        serializePropertyOptions.serializedKey    ) {      this.serializedKeyIgnoreSet.add(parentPropertyObject.serializedKey);    }  }
  public hasPropertyKey(propertyKey: string | symbol): boolean {    return (      this.propertyKeyMap.has(propertyKey) ||      (!this.propertyKeyIgnoreSet.has(propertyKey) &&        this.parentMap?.hasPropertyKey(propertyKey)) ||      false    );  }
  public getByPropertyKey(    propertyKey: string | symbol,  ): SerializePropertyOptions | undefined {    return (      this.propertyKeyMap.get(propertyKey) ||      (!this.propertyKeyIgnoreSet.has(propertyKey) &&        this.parentMap?.getByPropertyKey(propertyKey)) ||      undefined    );  }
  public hasSerializedKey(serializedKey: string): boolean {    return (      this.serializedKeyMap.has(serializedKey) ||      (!this.serializedKeyIgnoreSet.has(serializedKey) &&        this.parentMap?.hasSerializedKey(serializedKey)) ||      false    );  }
  public getBySerializedKey(    serializedKey: string,  ): SerializePropertyOptions | undefined {    return (      this.serializedKeyMap.get(serializedKey) ||      (!this.serializedKeyIgnoreSet.has(serializedKey) &&        this.parentMap?.getBySerializedKey(serializedKey)) ||      undefined    );  }
  /** Get a map of all property entries for this map,   * including parent entires, excluding any ignored parent properties   */  private getMergedWithParentMap(): Map<    string | symbol,    SerializePropertyOptions  > {    const parentEntries = Array.from(      this.parentMap?.getMergedWithParentMap() || [],    );    return new Map([      ...parentEntries.filter((e) => !this.propertyKeyIgnoreSet.has(e[0])),      ...this.propertyKeyMap,    ]);  }
  public propertyOptions(): Iterable<SerializePropertyOptions> {    return this.getMergedWithParentMap().values();  }}