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import { LIMITS } from "@/lib/limits";
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/**
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* Item itinerary terstruktur. Format jam: "HH:mm" 24-jam.
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* Bentuk ini dipakai di form, action, dan render — DB-nya pakai
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* `TripItineraryItem` (lihat schema.prisma).
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*/
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export interface ItineraryItemInput {
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day: number;
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startTime: string;
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endTime?: string | null;
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activity: string;
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}
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const TIME_RE = /^([01]\d|2[0-3]):[0-5]\d$/;
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export function isValidTimeFormat(value: string): boolean {
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return TIME_RE.test(value);
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}
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/**
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* Konversi "HH:mm" ke total menit sejak 00:00. Pakai untuk perbandingan
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* jam mulai vs jam selesai. Mengembalikan NaN kalau format invalid.
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*/
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export function timeToMinutes(value: string): number {
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if (!isValidTimeFormat(value)) return Number.NaN;
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const [h, m] = value.split(":").map(Number);
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return h * 60 + m;
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}
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/**
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* Format display jam (sudah HH:mm di DB, sekedar pass-through dengan
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* trimming defensif).
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*/
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export function formatItineraryTime(value: string): string {
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return value.trim();
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}
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/**
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* Kelompokkan items per hari, urut ascending. Item dalam satu hari diurut
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* berdasarkan `order` lalu `startTime`.
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*/
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export function groupItineraryByDay<
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T extends { day: number; order: number; startTime: string },
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>(items: T[]): Map<number, T[]> {
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const grouped = new Map<number, T[]>();
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for (const item of items) {
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const list = grouped.get(item.day) ?? [];
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list.push(item);
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grouped.set(item.day, list);
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}
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for (const list of grouped.values()) {
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list.sort((a, b) => {
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if (a.order !== b.order) return a.order - b.order;
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return timeToMinutes(a.startTime) - timeToMinutes(b.startTime);
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});
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}
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return new Map(
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[...grouped.entries()].sort(([a], [b]) => a - b)
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);
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}
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/**
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* Validasi semantik (selain Zod): jam selesai harus >= jam mulai (kalau diisi),
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* dan jumlah day harus rapat (1..N tanpa lompat) untuk menjaga UX builder
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* tetap deterministik. Return error pertama yang ditemui, atau null kalau OK.
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*/
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export function validateItineraryItems(
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items: ItineraryItemInput[]
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): string | null {
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if (items.length === 0) return null;
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if (items.length > LIMITS.MAX_ITINERARY_ITEMS) {
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return `Maksimal ${LIMITS.MAX_ITINERARY_ITEMS} aktivitas total`;
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}
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const days = new Set<number>();
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for (const item of items) {
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if (!Number.isInteger(item.day) || item.day < 1) {
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return "Nomor hari tidak valid";
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}
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if (item.day > LIMITS.MAX_ITINERARY_DAYS) {
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return `Maksimal ${LIMITS.MAX_ITINERARY_DAYS} hari`;
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}
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if (!isValidTimeFormat(item.startTime)) {
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return "Format jam mulai harus HH:mm (00:00 – 23:59)";
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}
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if (item.endTime && !isValidTimeFormat(item.endTime)) {
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return "Format jam selesai harus HH:mm (00:00 – 23:59)";
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}
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if (
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item.endTime &&
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timeToMinutes(item.endTime) < timeToMinutes(item.startTime)
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) {
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return "Jam selesai tidak boleh sebelum jam mulai";
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}
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const trimmedActivity = item.activity.trim();
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if (trimmedActivity.length === 0) {
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return "Deskripsi aktivitas harus diisi";
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}
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if (trimmedActivity.length > LIMITS.MAX_ITINERARY_ACTIVITY_LENGTH) {
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return `Aktivitas maksimal ${LIMITS.MAX_ITINERARY_ACTIVITY_LENGTH} karakter`;
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}
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days.add(item.day);
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}
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const sortedDays = [...days].sort((a, b) => a - b);
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for (let i = 0; i < sortedDays.length; i++) {
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if (sortedDays[i] !== i + 1) {
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return "Nomor hari harus berurutan mulai dari Hari 1 (tidak boleh lompat)";
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}
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}
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return null;
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}
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