65 lines
2.0 KiB
TypeScript
65 lines
2.0 KiB
TypeScript
import { BadRequestException } from "@nestjs/common";
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import { DayExpenseResponse } from "../types and interfaces/expenses.types.interfaces";
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//uppercase and trim for validation
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export function normalizeType(type: string): string {
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return (type ?? '').trim().toUpperCase();
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};
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//required comment after trim
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export function assertAndTrimComment(comment: string): string {
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const cmt = (comment ?? '').trim();
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if(cmt.length === 0) {
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throw new BadRequestException('A comment is required');
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}
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return cmt;
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};
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//rounding $ to 2 decimals
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export function roundMoney2(num: number): number {
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return Math.round((num + Number.EPSILON) * 100)/ 100;
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};
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export function computeMileageAmount(km: number, modifier: number): number {
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if(km < 0) throw new BadRequestException('mileage must be positive');
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if(modifier < 0) throw new BadRequestException('modifier must be positive');
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return roundMoney2(km * modifier);
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};
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//compat. types with Prisma.Decimal. work around Prisma import in utils.
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export type DecimalLike =
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| number
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| string
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| { toNumber?: () => number }
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| { toString?: () => string };
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//safe conversion to number
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export function toNumberSafe(value: DecimalLike): number {
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if(typeof value === 'number') return value;
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if(value && typeof (value as any).toNumber === 'function') return (value as any).toNumber();
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return Number(
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typeof (value as any)?.toString === 'function'
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? (value as any).toString()
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: value,
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);
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}
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//map of a row for DayExpenseResponse
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export function mapDbExpenseToDayResponse(row: {
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date: Date;
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amount: DecimalLike;
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comment: string;
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is_approved: boolean;
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bank_code?: { type?: string | null } | null;
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}): DayExpenseResponse {
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const yyyyMmDd = row.date.toISOString().slice(0,10);
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return {
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date: yyyyMmDd,
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type: normalizeType(row.bank_code?.type ?? 'UNKNOWN'),
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amount: toNumberSafe(row.amount),
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comment: row.comment,
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is_approved: row.is_approved,
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};
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} |