// @vitest-environment jsdom
import { defineComponent, h, nextTick } from "vue";
import { mount } from "@vue/test-utils";
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";

vi.mock("vue-router", () => {
  const push = vi.fn();
  return {
    useRouter: () => ({ push }),
    __routerPush: push,
  };
});

vi.mock("@/components/global/BrandedLoadingScreen.vue", () => {
  return {
    default: defineComponent({
      name: "MockBrandedLoadingScreen",
      props: {
        title: {
          type: String,
          default: "",
        },
        subtitle: {
          type: String,
          default: "",
        },
        testId: {
          type: String,
          default: "branded-loading-screen",
        },
        statusTestId: {
          type: String,
          default: "",
        },
        ariaLabel: {
          type: String,
          default: "",
        },
      },
      setup(props) {
        return () =>
          h(
            "div",
            {
              "data-testid": props.testId,
              "data-aria-label": props.ariaLabel,
            },
            [
              h("span", { "data-testid": props.statusTestId || undefined }, props.title),
              props.subtitle ? h("small", props.subtitle) : null,
            ]
          );
      },
    }),
  };
});

vi.mock("@/components/displays/department/pos/steps/mobile/elements/PosDepartmentStepMobile1Location.vue", () => {
  return {
    default: defineComponent({
      name: "MockPosDepartmentStepMobile1Location",
      props: {
        enableHighAccuracy: {
          type: Boolean,
          default: true,
        },
        maximumAge: {
          type: Number,
          default: 30000,
        },
        timeout: {
          type: Number,
          default: 27000,
        },
      },
      setup(props) {
        return () =>
          h("div", {
            "data-testid": "location-probe",
            "data-enable-high-accuracy": String(props.enableHighAccuracy),
            "data-maximum-age": String(props.maximumAge),
            "data-timeout": String(props.timeout),
          });
      },
    }),
  };
});

vi.mock("@/components/viewport/conditions/ViewportTypes.vue", async () => {
  const { ref } = await import("vue");
  const isMobile = ref(false);
  return {
    isMobile,
    __isMobileRef: isMobile,
  };
});

vi.mock("@/components/pagination/departmentTabs.vue", async () => {
  const { ref } = await import("vue");
  const departments = ref([]);
  const getDepartments = vi.fn(() => Promise.resolve());
  return {
    departments,
    getDepartments,
    __departmentsRef: departments,
    __getDepartmentsMock: getDepartments,
  };
});

vi.mock("@/components/displays/department/pos/steps/mobile/objects/PosDepartmentStepMobileFlow.vue", async () => {
  const { ref } = await import("vue");
  const location = ref(null);
  const defaultTimeout = ref(500);
  const locations = {
    location,
    defaultTimeout,
    normalizeCoordinatePair: (coordinates, { allowZeroPair = true } = {}) => {
      const latitude = Number(coordinates?.latitude);
      const longitude = Number(coordinates?.longitude);
      if (!Number.isFinite(latitude) || !Number.isFinite(longitude)) {
        return null;
      }
      if (latitude < -90 || latitude > 90 || longitude < -180 || longitude > 180) {
        return null;
      }
      if (!allowZeroPair && latitude === 0 && longitude === 0) {
        return null;
      }
      return { latitude, longitude };
    },
    set: (newLocation) => {
      location.value = newLocation;
    },
    get: () => location.value,
    clear: () => {
      location.value = null;
    },
    getDistance: (from, to) => {
      return Math.abs(from.latitude - to.latitude) + Math.abs(from.longitude - to.longitude);
    },
  };

  return {
    locations,
    __locationRef: location,
    __defaultTimeoutRef: defaultTimeout,
  };
});

vi.mock("@/components/session/token/SessionUser.vue", async () => {
  const { ref } = await import("vue");
  const initiated = ref(false);
  const permissions = ref([]);
  const isSubuser = ref(false);
  const token = ref(null);

  const hasPermission = (permission) => permissions.value.includes(permission);
  const SessionUser = {
    initiated,
    permissions,
    isSubuser,
    token,
    isInitiated: () => initiated.value,
    hasToken: () => token.value !== null,
    canAccessSuperUser: () => hasPermission("superuser"),
    canAccessAdmin: () => hasPermission("admin") || hasPermission("superuser"),
    canAccessUser: () => hasPermission("user"),
    canAccessGuest: () => true,
    canAccessAssignedDepartment: (id) => hasPermission(`department_access_${Number.parseInt(id, 10)}`),
  };

  return {
    SessionUser,
    __sessionState: {
      initiated,
      permissions,
      isSubuser,
      token,
    },
  };
});

import DefaultPage from "@/views/DefaultPage.vue";
import { __routerPush } from "vue-router";
import { __isMobileRef } from "@/components/viewport/conditions/ViewportTypes.vue";
import { __departmentsRef, __getDepartmentsMock } from "@/components/pagination/departmentTabs.vue";
import {
  __defaultTimeoutRef,
  __locationRef,
} from "@/components/displays/department/pos/steps/mobile/objects/PosDepartmentStepMobileFlow.vue";
import { __sessionState } from "@/components/session/token/SessionUser.vue";

let wrapper = null;

const mountDefaultPage = () => {
  wrapper = mount(DefaultPage, {
    global: {
      mocks: {
        $t: (key, params = {}) => (params.name ? `${key}:${params.name}` : key),
      },
    },
  });
  return wrapper;
};

const setAdminSession = (permissions = ["admin"]) => {
  __sessionState.initiated.value = true;
  __sessionState.permissions.value = permissions;
  __sessionState.isSubuser.value = false;
  __sessionState.token.value = "unit-token";
};

const setPendingSession = () => {
  __sessionState.initiated.value = false;
  __sessionState.permissions.value = [];
  __sessionState.isSubuser.value = false;
  __sessionState.token.value = "unit-token";
};

const setLocation = ({ latitude, longitude, timestamp = Date.now() }) => {
  __locationRef.value = {
    coords: {
      latitude,
      longitude,
    },
    timestamp: new Date(timestamp),
    locatedAt: timestamp,
  };
};

describe("DefaultPage mobile department redirect", () => {
  beforeEach(() => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date("2026-06-11T10:00:00.000Z"));
    __routerPush.mockReset();
    __getDepartmentsMock.mockReset();
    __getDepartmentsMock.mockResolvedValue(undefined);
    __isMobileRef.value = true;
    __departmentsRef.value = [];
    __locationRef.value = null;
    __defaultTimeoutRef.value = 500;
    setAdminSession(["admin", "department_access_1", "department_access_2"]);
  });

  afterEach(() => {
    wrapper?.unmount();
    wrapper = null;
    vi.clearAllTimers();
    vi.useRealTimers();
  });

  it("shows the branded redirect loader while session access is still unresolved", async () => {
    setPendingSession();

    const mounted = mountDefaultPage();
    await nextTick();

    expect(mounted.get('[data-testid="redirect-loading-status"]').text()).toBe("Omdirigerer...");
    expect(mounted.text()).toContain("Vi finder den rigtige side for dig");
    expect(mounted.find('[data-testid="redirect-nearest-department-loading"]').exists()).toBe(false);
  });

  it("shows the branded nearest-department loader during mobile auto-selection", async () => {
    const mounted = mountDefaultPage();
    await nextTick();

    expect(mounted.get('[data-testid="redirect-nearest-department-loading-status"]').text()).toBe(
      "Finder din nærmeste afdeling..."
    );
    expect(mounted.text()).toContain("Vi bruger din placering til at vælge afdeling");
    expect(mounted.find('[data-testid="redirect-loading"]').exists()).toBe(false);
  });

  it("routes when geolocation arrives before departments finish loading", async () => {
    mountDefaultPage();
    await nextTick();

    setLocation({
      latitude: 55.5,
      longitude: 12.5,
    });
    await nextTick();

    expect(__routerPush).not.toHaveBeenCalledWith({ name: "pos", params: { departmentId: 2 } });

    __departmentsRef.value = [
      { id: 1, name: "Far", latitude: 55.0, longitude: 12.0 },
      { id: 2, name: "Near", latitude: 55.51, longitude: 12.51 },
    ];
    await nextTick();

    expect(__getDepartmentsMock).toHaveBeenCalledTimes(1);
    expect(__routerPush).toHaveBeenCalledWith({ name: "pos", params: { departmentId: 2 } });
  });

  it("requests a fresh geolocation fix for mobile department auto-selection", async () => {
    const mounted = mountDefaultPage();
    await nextTick();

    const probe = mounted.find('[data-testid="location-probe"]');
    expect(probe.attributes("data-enable-high-accuracy")).toBe("true");
    expect(probe.attributes("data-maximum-age")).toBe("0");
    expect(probe.attributes("data-timeout")).toBe("27000");
  });

  it("shows manual department selection after five seconds", async () => {
    const mounted = mountDefaultPage();
    await nextTick();

    expect(mounted.find('[data-testid="redirect-manual-department-button"]').exists()).toBe(false);

    await vi.advanceTimersByTimeAsync(4999);
    await nextTick();

    expect(mounted.find('[data-testid="redirect-manual-department-button"]').exists()).toBe(false);

    await vi.advanceTimersByTimeAsync(1);
    await nextTick();

    expect(mounted.find('[data-testid="redirect-manual-department-button"]').exists()).toBe(true);
  });

  it("lets the user manually select a department after GPS wait", async () => {
    setAdminSession(["admin", "department_access_4", "department_access_6"]);
    __departmentsRef.value = [
      { id: 4, name: "Køge", latitude: 55.458, longitude: 12.182 },
      { id: 6, name: "Roskilde", latitude: 55.642, longitude: 12.08 },
    ];

    const mounted = mountDefaultPage();
    await nextTick();

    await vi.advanceTimersByTimeAsync(5000);
    await nextTick();

    await mounted.get('[data-testid="redirect-manual-department-button"]').trigger("click");
    await nextTick();

    expect(mounted.find('[data-testid="redirect-manual-department-options"]').exists()).toBe(true);

    setLocation({
      latitude: 55.458,
      longitude: 12.182,
    });
    await nextTick();

    expect(__routerPush).not.toHaveBeenCalledWith({ name: "pos", params: { departmentId: 4 } });

    await vi.advanceTimersByTimeAsync(27000);
    await nextTick();

    expect(__routerPush).not.toHaveBeenCalledWith({ name: "admin" });

    await mounted.get('[data-testid="redirect-manual-department-option-6"]').trigger("click");
    await nextTick();

    expect(__routerPush).toHaveBeenCalledWith({ name: "pos", params: { departmentId: 6 } });
  });

  it("ignores stale cached location and waits for a fresh Roskilde location", async () => {
    setAdminSession(["admin", "department_access_4", "department_access_6"]);
    __departmentsRef.value = [
      { id: 4, name: "Køge", latitude: 55.458, longitude: 12.182 },
      { id: 6, name: "Roskilde", latitude: 55.642, longitude: 12.08 },
    ];
    setLocation({
      latitude: 55.458,
      longitude: 12.182,
      timestamp: Date.now() - 30000,
    });

    mountDefaultPage();
    await nextTick();

    expect(__locationRef.value).toBeNull();
    expect(__routerPush).not.toHaveBeenCalledWith({ name: "pos", params: { departmentId: 4 } });

    await vi.advanceTimersByTimeAsync(100);
    setLocation({
      latitude: 55.642,
      longitude: 12.08,
    });
    await nextTick();

    expect(__routerPush).toHaveBeenCalledWith({ name: "pos", params: { departmentId: 6 } });
  });

  it("does not redirect from a location timestamp older than the auto-select attempt", async () => {
    setAdminSession(["admin", "department_access_4", "department_access_6"]);
    __departmentsRef.value = [
      { id: 4, name: "Køge", latitude: 55.458, longitude: 12.182 },
      { id: 6, name: "Roskilde", latitude: 55.642, longitude: 12.08 },
    ];
    const staleTimestamp = Date.now() - 1000;

    mountDefaultPage();
    await nextTick();

    setLocation({
      latitude: 55.458,
      longitude: 12.182,
      timestamp: staleTimestamp,
    });
    await nextTick();

    expect(__routerPush).not.toHaveBeenCalledWith({ name: "pos", params: { departmentId: 4 } });

    await vi.advanceTimersByTimeAsync(27000);
    await nextTick();

    expect(__routerPush).toHaveBeenCalledWith({ name: "admin" });
  });

  it("routes immediately when only one accessible department exists", async () => {
    setAdminSession(["admin", "department_access_6"]);
    __departmentsRef.value = [
      { id: 4, name: "Køge", latitude: 55.458, longitude: 12.182 },
      { id: 6, name: "Roskilde", latitude: 55.642, longitude: 12.08 },
    ];

    mountDefaultPage();
    await nextTick();

    expect(__routerPush).toHaveBeenCalledWith({ name: "pos", params: { departmentId: 6 } });
  });

  it("falls back after timeout even when location exists but nearest cannot be resolved", async () => {
    __departmentsRef.value = [
      { id: 1, name: "Missing coordinates" },
      { id: 2, name: "Also missing coordinates" },
    ];

    mountDefaultPage();
    await nextTick();

    setLocation({
      latitude: 55.5,
      longitude: 12.5,
    });
    await nextTick();

    expect(__routerPush).not.toHaveBeenCalled();

    await vi.advanceTimersByTimeAsync(27000);
    await nextTick();

    expect(__routerPush).toHaveBeenCalledWith({ name: "admin" });
  });

  it("does not auto-select departments for desktop admin users", async () => {
    __isMobileRef.value = false;

    mountDefaultPage();
    await nextTick();

    expect(__getDepartmentsMock).not.toHaveBeenCalled();
    expect(__routerPush).toHaveBeenCalledWith({ name: "admin" });
  });
});