import { afterAll, beforeEach, describe, expect, it } from "vitest";
import db from "../../app/db.server";
import { findEligibleLocationsForDelivery, geocodeAddress, meetsDeliveryDensity } from "../../app/services/zones.server";

const shopDomain = "zones-integration-test.myshopify.com";

async function cleanup() {
  await db.booking.deleteMany({ where: { shopDomain } });
  await db.zone.deleteMany({ where: { shopDomain } });
  await db.location.deleteMany({ where: { shopDomain } });
  await db.geocodeCache.deleteMany({ where: { normalizedKey: { contains: "123 test" } } });
}

describe("zones.server integration", () => {
  beforeEach(cleanup);
  afterAll(async () => {
    await cleanup();
    await db.$disconnect();
  });

  it("geocodeAddress caches a result and reuses it without a real API key on the second call", async () => {
    // No GOOGLE_MAPS_API_KEY is set in this test environment, so the first
    // call would normally return null — pre-seed the cache directly to
    // prove the cache-read path works without needing live Maps access.
    await db.geocodeCache.upsert({
      where: { normalizedKey: "123 test street" },
      create: { normalizedKey: "123 test street", lat: 43.65, lng: -79.38 },
      update: {},
    });

    const result = await geocodeAddress("123 Test Street");
    expect(result).toEqual({ lat: 43.65, lng: -79.38 });
  });

  it("returns null when there's no cache entry and no API key configured", async () => {
    delete process.env.GOOGLE_MAPS_API_KEY;
    const result = await geocodeAddress("456 Nowhere Cached Ave");
    expect(result).toBeNull();
  });

  it("findEligibleLocationsForDelivery matches a postal-zone location by postal code alone (no geocoding needed)", async () => {
    const location = await db.location.create({
      data: { shopDomain, name: "Postal Loc", address: "", timezone: "America/Toronto" },
    });
    const zone = await db.zone.create({
      data: {
        shopDomain,
        locationId: location.id,
        name: "Downtown",
        type: "postal",
        postalCodes: ["M5V 3A8"],
      },
    });

    const matches = await findEligibleLocationsForDelivery(shopDomain, { postalCode: "M5V3A8" });
    expect(matches).toHaveLength(1);
    expect(matches[0]).toMatchObject({ locationId: location.id, zoneId: zone.id, distanceKm: null });
  });

  it("excludes an inactive location's zones", async () => {
    const location = await db.location.create({
      data: { shopDomain, name: "Inactive Loc", address: "", timezone: "America/Toronto", active: false },
    });
    await db.zone.create({
      data: { shopDomain, locationId: location.id, name: "Zone", type: "postal", postalCodes: ["M5V 3A8"] },
    });

    const matches = await findEligibleLocationsForDelivery(shopDomain, { postalCode: "M5V3A8" });
    expect(matches).toHaveLength(0);
  });

  it("ranks radius-zone matches nearest-first using cached geocode coordinates", async () => {
    await db.geocodeCache.upsert({
      where: { normalizedKey: "123 test customer address" },
      create: { normalizedKey: "123 test customer address", lat: 43.6532, lng: -79.3832 }, // Toronto
      update: {},
    });

    const near = await db.location.create({
      data: { shopDomain, name: "Near", address: "", timezone: "America/Toronto", lat: 43.65, lng: -79.4 },
    });
    const far = await db.location.create({
      data: { shopDomain, name: "Far", address: "", timezone: "America/Toronto", lat: 45.4215, lng: -75.6972 }, // Ottawa
    });
    await db.zone.create({
      data: { shopDomain, locationId: near.id, name: "Zone", type: "radius", radiusKm: 500 },
    });
    await db.zone.create({
      data: { shopDomain, locationId: far.id, name: "Zone", type: "radius", radiusKm: 500 },
    });

    const matches = await findEligibleLocationsForDelivery(shopDomain, { address: "123 Test Customer Address" });
    expect(matches).toHaveLength(2);
    expect(matches[0].locationId).toBe(near.id);
    expect(matches[1].locationId).toBe(far.id);
  });

  it("meetsDeliveryDensity passes when minOrders is unset", async () => {
    const location = await db.location.create({
      data: { shopDomain, name: "Loc", address: "", timezone: "America/Toronto" },
    });
    const zone = await db.zone.create({
      data: { shopDomain, locationId: location.id, name: "Zone", type: "postal", postalCodes: [] },
    });
    expect(await meetsDeliveryDensity(shopDomain, zone)).toBe(true);
  });

  it("meetsDeliveryDensity fails below threshold and passes once enough bookings exist", async () => {
    const location = await db.location.create({
      data: { shopDomain, name: "Loc", address: "", timezone: "America/Toronto" },
    });
    const zone = await db.zone.create({
      data: { shopDomain, locationId: location.id, name: "Sparse Zone", type: "postal", postalCodes: [], minOrders: 2 },
    });

    expect(await meetsDeliveryDensity(shopDomain, zone)).toBe(false);

    await db.booking.create({
      data: {
        shopDomain,
        orderId: "gid://shopify/Order/zone-density-1",
        locationId: location.id,
        zoneId: zone.id,
        method: "LOCAL_DELIVERY",
        slotStart: new Date(),
        slotEnd: new Date(),
      },
    });
    expect(await meetsDeliveryDensity(shopDomain, zone)).toBe(false); // still only 1 of 2

    await db.booking.create({
      data: {
        shopDomain,
        orderId: "gid://shopify/Order/zone-density-2",
        locationId: location.id,
        zoneId: zone.id,
        method: "LOCAL_DELIVERY",
        slotStart: new Date(),
        slotEnd: new Date(),
      },
    });
    expect(await meetsDeliveryDensity(shopDomain, zone)).toBe(true);
  });

  it("meetsDeliveryDensity does not count a cancelled booking toward the threshold", async () => {
    const location = await db.location.create({
      data: { shopDomain, name: "Loc", address: "", timezone: "America/Toronto" },
    });
    const zone = await db.zone.create({
      data: { shopDomain, locationId: location.id, name: "Zone", type: "postal", postalCodes: [], minOrders: 1 },
    });
    await db.booking.create({
      data: {
        shopDomain,
        orderId: "gid://shopify/Order/zone-density-cancelled",
        locationId: location.id,
        zoneId: zone.id,
        method: "LOCAL_DELIVERY",
        slotStart: new Date(),
        slotEnd: new Date(),
        status: "cancelled",
      },
    });
    expect(await meetsDeliveryDensity(shopDomain, zone)).toBe(false);
  });
});