50 lines
1.3 KiB
TypeScript
50 lines
1.3 KiB
TypeScript
export class BaseRepository {
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private static guildInstances: Map<string, any>;
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private nextRelations: string[];
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protected guildId: string;
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constructor(guildId: string) {
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this.guildId = guildId;
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this.nextRelations = [];
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}
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/**
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* Returns a cached instance of the inheriting class for the specified guildId,
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* or creates a new instance if one doesn't exist yet
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*/
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public static getInstance<T extends typeof BaseRepository>(this: T, guildId: string): InstanceType<T> {
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if (!this.guildInstances) {
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this.guildInstances = new Map();
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}
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if (!this.guildInstances.has(guildId)) {
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this.guildInstances.set(guildId, new this(guildId));
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}
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return this.guildInstances.get(guildId) as InstanceType<T>;
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}
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/**
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* Primes the specified relation(s) to be used in the next database operation.
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* Can be chained.
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*/
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public with(relations: string | string[]): this {
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if (Array.isArray(relations)) {
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this.nextRelations.push(...relations);
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} else {
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this.nextRelations.push(relations);
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}
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return this;
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}
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/**
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* Gets and resets the relations primed using with()
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*/
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protected getRelations(): string[] {
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const relations = this.nextRelations || [];
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this.nextRelations = [];
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return relations;
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}
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}
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