import {
    clearBeforeEachErrorRecoveryCount,
    getBeforeEachErrorRecoveryCount,
    hasBeforeEachErrorRecoveryBeenAttempted,
    incrementBeforeEachErrorRecoveryCount,
    resetBeforeEachErrorRecoveryStateForTests,
} from "./before-each-error-recovery";
import { sessionStorageKeyConstants } from "@/constants/session-storage";

describe("router/methods/before-each-error-recovery", () => {
    const recoveryKey = sessionStorageKeyConstants.BEFORE_EACH_ERROR_RECOVERY_COUNT;
    let originalSessionStorage;

    beforeEach(() => {
        resetBeforeEachErrorRecoveryStateForTests();
        originalSessionStorage = window.sessionStorage;
    });

    afterEach(() => {
        Object.defineProperty(window, "sessionStorage", {
            configurable: true,
            value: originalSessionStorage,
        });
        resetBeforeEachErrorRecoveryStateForTests();
    });

    it("reads and writes recovery count via sessionStorage when available", () => {
        incrementBeforeEachErrorRecoveryCount();

        expect(window.sessionStorage.getItem(recoveryKey)).toBe("1");
        expect(getBeforeEachErrorRecoveryCount()).toBe(1);
        expect(hasBeforeEachErrorRecoveryBeenAttempted()).toBe(true);
    });

    it("clears sessionStorage and in-memory count", () => {
        incrementBeforeEachErrorRecoveryCount();
        clearBeforeEachErrorRecoveryCount();

        expect(window.sessionStorage.getItem(recoveryKey)).toBeNull();
        expect(getBeforeEachErrorRecoveryCount()).toBe(0);
        expect(hasBeforeEachErrorRecoveryBeenAttempted()).toBe(false);
    });

    it("uses in-memory count when sessionStorage getItem throws", () => {
        Object.defineProperty(window, "sessionStorage", {
            configurable: true,
            value: {
                getItem: () => {
                    throw new Error("sessionStorage blocked");
                },
                setItem: jest.fn(),
                removeItem: jest.fn(),
            },
        });

        incrementBeforeEachErrorRecoveryCount();
        incrementBeforeEachErrorRecoveryCount();

        expect(hasBeforeEachErrorRecoveryBeenAttempted()).toBe(true);
        expect(getBeforeEachErrorRecoveryCount()).toBe(2);
    });

    it("uses in-memory count when sessionStorage setItem throws", () => {
        Object.defineProperty(window, "sessionStorage", {
            configurable: true,
            value: {
                getItem: () => null,
                setItem: () => {
                    throw new Error("sessionStorage blocked");
                },
                removeItem: jest.fn(),
            },
        });

        incrementBeforeEachErrorRecoveryCount();

        expect(hasBeforeEachErrorRecoveryBeenAttempted()).toBe(true);
        expect(getBeforeEachErrorRecoveryCount()).toBe(1);
    });
});