import type { Weekday, TimeRange, LocationConfig, PeakDay, ProductRule, ShopSettings, CartItem } from "../types";
import { zonedToUtc } from "../time";

export const TZ = "America/Toronto";
/** Local Toronto wall time → epoch ms */
export const at = (date: string, time: string) => zonedToUtc(date, time, TZ);

const h = () => [{ start: "10:00", end: "18:00" }];
const monSat: Partial<Record<Weekday, TimeRange[]>> = { 1: h(), 2: h(), 3: h(), 4: h(), 5: h(), 6: h() };
const deliverySlots = [
  { start: "10:00", end: "13:00" },
  { start: "13:00", end: "16:00" },
  { start: "16:00", end: "19:00", surcharge: 300 },
];

export function kitchener(): LocationConfig {
  return {
    id: "kit",
    name: "Kitchener",
    address: "900 Guelph St, Kitchener, ON N2H 5Z6",
    timezone: TZ,
    lat: 43.4643,
    lng: -80.4844,
    enabled: true,
    priority: 1,
    exceptions: [],
    zones: [
      { id: "z1", name: "Kitchener-Waterloo", postalPatterns: ["N2H*", "N2G*", "N2J..N2M"], fee: 799, freeOver: 7500, minOrder: 2500 },
      { id: "z2", name: "15 km radius", radiusKm: 15, fee: 1299 },
    ],
    pickupInstructions: "Unit 7 — ring the bell",
    methods: {
      pickup: {
        enabled: true,
        weeklyHours: { ...monSat },
        slotMode: "generated",
        slotMinutes: 60,
        prepMinutes: 60,
        prepMode: "elapsed",
        sameDayCutoff: "14:00",
        horizonDays: 30,
        slotCapacity: 4,
      },
      delivery: {
        enabled: true,
        weeklyHours: { 0: [{ start: "10:00", end: "19:00" }], 2: [{ start: "10:00", end: "19:00" }], 3: [{ start: "10:00", end: "19:00" }], 4: [{ start: "10:00", end: "19:00" }], 5: [{ start: "10:00", end: "19:00" }], 6: [{ start: "10:00", end: "19:00" }] },
        slotMode: "explicit",
        slots: { 0: deliverySlots, 2: deliverySlots, 3: deliverySlots, 4: deliverySlots, 5: deliverySlots, 6: deliverySlots },
        prepMinutes: 120,
        prepMode: "elapsed",
        sameDayCutoff: "12:00",
        horizonDays: 21,
        slotCapacity: 5,
        dailyCapacity: 12,
      },
      shipping: {
        enabled: true,
        weeklyHours: { ...monSat },
        slotMode: "dateOnly",
        prepMinutes: 0,
        prepMode: "operating",
        sameDayCutoff: "14:00",
        horizonDays: 14,
      },
    },
  };
}

export function waterloo(): LocationConfig {
  const l = kitchener();
  return {
    ...l,
    id: "wat",
    name: "Waterloo",
    priority: 2,
    lat: 43.4723,
    lng: -80.5449,
    zones: [{ id: "zw", name: "Waterloo", postalPatterns: ["N2L*", "N2J*"], fee: 599 }],
  };
}

export const settings: ShopSettings = {
  mixedPrepPolicy: "longest",
  holdMinutes: 10,
  weekStartsOn: 0,
  reschedule: { enabled: true, minHoursBefore: 24, maxChanges: 2, allowMethodChange: false },
  reminders: [
    { id: "r1", channel: "sms", minutesBefore: 24 * 60, template: "Hi {{name}}, your {{method}} is {{date}} {{time}}", enabled: true },
    { id: "r2", channel: "email", minutesBefore: 120, template: "Reminder {{order}}", enabled: true },
  ],
};

export const marigold: CartItem = {
  productId: "p_marigold",
  variantId: "v_marigold",
  title: "Fresh Marigold Garland",
  quantity: 2,
  price: 1999,
  collectionIds: ["c_flowers"],
  vendor: "C2C Agricorp",
  productType: "Fresh Flowers",
  tags: ["perishable"],
};

export const pakku: CartItem = {
  productId: "p_pakku",
  variantId: "v_pakku",
  title: "பாக்கு (Pākkŭ) 200g",
  quantity: 1,
  price: 699,
  collectionIds: ["c_puja"],
  vendor: "Clicks to Cart",
  productType: "Puja",
};

export const saree: CartItem = {
  productId: "p_saree",
  variantId: "v_saree",
  title: "Silk Saree",
  quantity: 1,
  price: 15999,
  collectionIds: ["c_apparel"],
  productType: "Apparel",
};

export const rules: ProductRule[] = [
  {
    id: "r_fresh_noship",
    name: "Fresh flowers can't ship",
    enabled: true,
    priority: 1,
    target: { type: "productType", values: ["Fresh Flowers"] },
    action: { type: "prohibitMethods", methods: ["shipping"] },
    message: "Fresh flowers are pickup or local delivery only",
  },
  {
    id: "r_fresh_prep",
    name: "Garland stringing time",
    enabled: true,
    priority: 2,
    target: { type: "tag", values: ["perishable"] },
    action: { type: "addPrep", minutes: 240 },
  },
  {
    id: "r_saree_prep",
    name: "Saree fall & pico",
    enabled: true,
    priority: 3,
    target: { type: "collection", values: ["c_apparel"] },
    action: { type: "addPrep", minutes: 60 * 24 },
  },
];

export const diwali: PeakDay = {
  id: "pk_diwali",
  name: "Diwali",
  dates: ["2026-11-08"],
  methods: ["delivery", "pickup"],
  dailyCapacity: 30,
  slotCapacity: 10,
  extraPrepMinutes: 60,
  cutoff: { daysBefore: 2, time: "18:00" },
  surcharge: 500,
  waitlist: true,
  message: "Diwali orders close Friday 6 PM",
};