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books/fyo/models/NumberSeries.ts
2023-04-04 22:10:32 -07:00

57 lines
1.4 KiB
TypeScript

import { Doc } from 'fyo/model/doc';
import { ReadOnlyMap } from 'fyo/model/types';
function getPaddedName(prefix: string, next: number, padZeros: number): string {
return prefix + next.toString().padStart(padZeros ?? 4, '0');
}
export default class NumberSeries extends Doc {
setCurrent() {
let current = this.get('current') as number | null;
/**
* Increment current if it isn't the first entry. This
* is to prevent reassignment of NumberSeries document ids.
*/
if (!current) {
current = this.get('start') as number;
} else {
current = current + 1;
}
this.current = current;
}
async next(schemaName: string) {
this.setCurrent();
const exists = await this.checkIfCurrentExists(schemaName);
if (exists) {
this.current = (this.current as number) + 1;
}
await this.sync();
return this.getPaddedName(this.current as number);
}
async checkIfCurrentExists(schemaName: string) {
if (!schemaName) {
return true;
}
const name = this.getPaddedName(this.current as number);
return await this.fyo.db.exists(schemaName, name);
}
getPaddedName(next: number): string {
return getPaddedName(this.name as string, next, this.padZeros as number);
}
readOnly: ReadOnlyMap = {
referenceType: () => this.inserted,
padZeros: () => this.inserted,
start: () => this.inserted,
};
}