Borewit
85 lines
2.2 KiB
TypeScript
85 lines
2.2 KiB
TypeScript
import * as generic from './GenericTagTypes.js';
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import {ITag} from '../type.js';
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import { INativeMetadataCollector, IWarningCollector } from './MetadataCollector.js';
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export interface IGenericTagMapper {
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/**
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* Which tagType it able to map to the generic mapping format
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*/
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tagTypes: generic.TagType[];
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/**
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* Basic tag map
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*/
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tagMap: generic.INativeTagMap;
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/**
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* Map native tag to generic tag
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* @param tag Native tag
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* @param warnings Register warnings
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* @return Generic tag, if native tag could be mapped
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*/
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mapGenericTag(tag: ITag, warnings: INativeMetadataCollector): generic.IGenericTag;
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}
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export class CommonTagMapper implements IGenericTagMapper {
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public static maxRatingScore = 1;
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public static toIntOrNull(str: string): number {
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const cleaned = parseInt(str, 10);
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return isNaN(cleaned) ? null : cleaned;
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}
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// TODO: a string of 1of1 would fail to be converted
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// converts 1/10 to no : 1, of : 10
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// or 1 to no : 1, of : 0
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public static normalizeTrack(origVal: number | string) {
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const split = origVal.toString().split('/');
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return {
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no: parseInt(split[0], 10) || null,
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of: parseInt(split[1], 10) || null
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};
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}
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public constructor(public tagTypes: generic.TagType[], public tagMap: generic.INativeTagMap) {
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}
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/**
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* Process and set common tags
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* write common tags to
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* @param tag Native tag
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* @param warnings Register warnings
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* @return common name
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*/
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public mapGenericTag(tag: ITag, warnings: IWarningCollector): generic.IGenericTag {
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tag = {id: tag.id, value: tag.value}; // clone object
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this.postMap(tag, warnings);
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// Convert native tag event to generic 'alias' tag
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const id = this.getCommonName(tag.id);
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return id ? {id, value: tag.value} : null;
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}
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/**
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* Convert native tag key to common tag key
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* @param tag Native header tag
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* @return common tag name (alias)
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*/
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protected getCommonName(tag: string): generic.GenericTagId {
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return this.tagMap[tag];
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}
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/**
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* Handle post mapping exceptions / correction
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* @param tag Tag e.g. {"©alb", "Buena Vista Social Club")
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* @param warnings Used to register warnings
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*/
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protected postMap(tag: ITag, warnings: IWarningCollector): void {
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return;
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}
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}
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