targo-backend/src/modules/timesheets/services/timesheet-get-overview.service.ts

210 lines
8.3 KiB
TypeScript

import { sevenDaysFrom, toDateFromString, toHHmmFromDate, toStringFromDate } from "../helpers/timesheets-date-time-helpers";
import { Injectable, NotFoundException } from "@nestjs/common";
import { PrismaService } from "src/prisma/prisma.service";
type TotalHours = {
regular: number;
evening: number;
emergency: number;
overtime: number;
vacation: number;
holiday: number;
sick: number;
};
type TotalExpenses = {
expenses: number;
per_diem: number;
on_call: number;
mileage: number;
};
@Injectable()
export class GetTimesheetsOverviewService {
constructor(private readonly prisma: PrismaService) { }
async getTimesheetsForEmployeeByPeriod(employee_id: number, pay_year: number, pay_period_no: number) {
//find period using year and period_no
const period = await this.prisma.payPeriods.findFirst({
where: { pay_year, pay_period_no },
});
if (!period) throw new NotFoundException(`Pay period ${pay_year}-${pay_period_no} not found`);
//loads the timesheets related to the fetched pay-period
const rows = await this.loadTimesheets({
employee_id,
start_date: { gte: period.period_start, lte: period.period_end },
});
//find user infos using the employee_id
const employee = await this.prisma.employees.findUnique({
where: { id: employee_id },
include: { user: true },
});
if (!employee) throw new NotFoundException(`Employee #${employee_id} not found`);
//builds employee full name
const user = employee.user;
const employee_fullname = `${user.first_name} ${user.last_name}`.trim();
//maps all timesheet's infos
const timesheets = rows.map((timesheet) => this.mapOneTimesheet(timesheet));
return { employee_fullname, timesheets };
}
//-----------------------------------------------------------------------------------
// MAPPERS & HELPERS
//-----------------------------------------------------------------------------------
//fetch timesheet's infos
private async loadTimesheets(where: any) {
return this.prisma.timesheets.findMany({
where,
include: {
employee: { include: { user: true } },
shift: { include: { bank_code: true } },
expense: { include: { bank_code: true, attachment_record: true } },
},
orderBy: { start_date: 'asc' },
});
}
private mapOneTimesheet(timesheet: any) {
//converts string to UTC date format
const start = toDateFromString(timesheet.start_date);
const day_dates = sevenDaysFrom(start);
//map of shifts by days
const shifts_by_date = new Map<string, any[]>();
for (const shift of timesheet.shift) {
const date = toStringFromDate(shift.date);
const arr = shifts_by_date.get(date) ?? [];
arr.push(shift);
shifts_by_date.set(date, arr);
}
//map of expenses by days
const expenses_by_date = new Map<string, any[]>();
for (const expense of timesheet.expense) {
const date = toStringFromDate(expense.date);
const arr = expenses_by_date.get(date) ?? [];
arr.push(expense);
expenses_by_date.set(date, arr);
}
//weekly totals
const weekly_hours: TotalHours[] = [emptyHours()];
const weekly_expenses: TotalExpenses[] = [emptyExpenses()];
//map of days
const days = day_dates.map((date) => {
const date_iso = toStringFromDate(date);
const shifts_source = shifts_by_date.get(date_iso) ?? [];
const expenses_source = expenses_by_date.get(date_iso) ?? [];
//inner map of shifts
const shifts = shifts_source.map((shift) => ({
date: toStringFromDate(shift.date),
start_time: toHHmmFromDate(shift.start_time),
end_time: toHHmmFromDate(shift.end_time),
type: shift.bank_code?.type ?? '',
is_remote: shift.is_remote ?? false,
is_approved: shift.is_approved ?? false,
shift_id: shift.id ?? null,
comment: shift.comment ?? null,
}));
//inner map of expenses
const expenses = expenses_source.map((expense) => ({
date: toStringFromDate(expense.date),
amount: expense.amount ? Number(expense.amount) : undefined,
mileage: expense.mileage ? Number(expense.mileage) : undefined,
expense_id: expense.id ?? null,
attachment: expense.attachment_record ? String(expense.attachment_record.id) : undefined,
is_approved: expense.is_approved ?? false,
comment: expense.comment ?? '',
supervisor_comment: expense.supervisor_comment,
}));
//daily totals
const daily_hours = [emptyHours()];
const daily_expenses = [emptyExpenses()];
//totals by shift types
for (const shift of shifts_source) {
const hours = diffOfHours(shift.start_time, shift.end_time);
const subgroup = hoursSubGroupFromBankCode(shift.bank_code);
daily_hours[0][subgroup] += hours;
weekly_hours[0][subgroup] += hours;
}
//totals by expense types
for (const expense of expenses_source) {
const subgroup = expenseSubgroupFromBankCode(expense.bank_code);
if (subgroup === 'mileage') {
const mileage = num(expense.mileage);
daily_expenses[0].mileage += mileage;
weekly_expenses[0].mileage += mileage;
} else if (subgroup === 'per_diem') {
const amount = num(expense.amount);
daily_expenses[0].per_diem += amount;
weekly_expenses[0].per_diem += amount;
} else if (subgroup === 'on_call') {
const amount = num(expense.amount);
daily_expenses[0].on_call += amount;
weekly_expenses[0].on_call += amount;
} else {
const amount = num(expense.amount);
daily_expenses[0].expenses += amount;
weekly_expenses[0].expenses += amount;
}
}
return {
date: date_iso,
shifts,
expenses,
daily_hours,
daily_expenses,
};
});
return {
timesheet_id: timesheet.id,
is_approved: timesheet.is_approved ?? false,
days,
weekly_hours,
weekly_expenses,
};
}
}
//filled array with default values
const emptyHours = (): TotalHours => { return { regular: 0, evening: 0, emergency: 0, overtime: 0, vacation: 0, holiday: 0, sick: 0 } };
const emptyExpenses = (): TotalExpenses => { return { expenses: 0, per_diem: 0, on_call: 0, mileage: 0 } };
//calculate the differences of hours
const diffOfHours = (a: Date, b: Date): number => {
const ms = new Date(b).getTime() - new Date(a).getTime();
return Math.max(0, Math.round((ms / 36e5) * 1000) / 1000);
}
//validate numeric values
const num = (value: any): number => { return value ? Number(value) : 0 };
// shift's subgroup types
const hoursSubGroupFromBankCode = (bank_code: any): keyof TotalHours => {
const type = bank_code.type;
if (type.includes('EVENING')) return 'evening';
if (type.includes('EMERGENCY')) return 'emergency';
if (type.includes('OVERTIME')) return 'overtime';
if (type.includes('VACATION')) return 'vacation';
if (type.includes('HOLIDAY')) return 'holiday';
if (type.includes('SICK')) return 'sick';
return 'regular'
}
// expense's subgroup types
const expenseSubgroupFromBankCode = (bank_code: any): keyof TotalExpenses => {
const type = bank_code.type;
if (type.includes('MILEAGE')) return 'mileage';
if (type.includes('PER_DIEM')) return 'per_diem';
if (type.includes('ON_CALL')) return 'on_call';
return 'expenses';
}