// #region MaintenanceComponentTests [C:2] [TYPE Module] [SEMANTICS test, component, maintenance, events-table, badge]
// @BRIEF Component tests for MaintenanceEventsTable and DashboardMaintenanceBadge.
// @RELATION DEPENDS_ON -> [EXT:frontend:MaintenanceEventsTable]
// @RELATION DEPENDS_ON -> [EXT:frontend:DashboardMaintenanceBadge]

import { describe, it, expect, vi, beforeEach } from 'vitest';

// Create mutable mock data using vi.hoisted
const { mockStoreState, mockStore } = vi.hoisted(() => {
    const sharedState = {
        activeEvents: [],
        completedEvents: [],
        settings: null,
        dashboardBanners: [],
        isLoading: false,
        error: null,
    };

    const store = {
        get activeEvents() { return sharedState.activeEvents; },
        get completedEvents() { return sharedState.completedEvents; },
        get settings() { return sharedState.settings; },
        get dashboardBanners() { return sharedState.dashboardBanners; },
        get isLoading() { return sharedState.isLoading; },
        get error() { return sharedState.error; },
        loadEvents: vi.fn(),
        loadSettings: vi.fn(),
        loadDashboardBanners: vi.fn(),
        endEvent: vi.fn(),
        endAllEvents: vi.fn(),
        updateSettings: vi.fn(),
        init: vi.fn(),
        startPolling: vi.fn(),
        stopPolling: vi.fn(),
    };

    return { mockStoreState: sharedState, mockStore: store };
});

function resetMockStore() {
    mockStoreState.activeEvents = [];
    mockStoreState.completedEvents = [];
    mockStoreState.settings = null;
    mockStoreState.dashboardBanners = [];
    mockStoreState.isLoading = false;
    mockStoreState.error = null;
}

// Mock toasts
vi.mock('$lib/toasts.js', () => ({
    addToast: vi.fn()
}));

// Mock i18n — $t is a derived store, needs subscribe method for Svelte $ prefix
vi.mock('$lib/i18n', () => {
    const subscribers = new Set();
    const tData = {
        maintenance: {
            active_events: 'Active Events',
            completed_events: 'Completed Events',
            no_active_events: 'No active maintenance events',
            no_completed_events: 'No completed maintenance events',
            remove_banners: 'Remove',
            remove_all: 'Remove All',
            maintenance_badge: 'Maintenance',
            maintenance_tooltip: 'Maintenance active: {start} — {end}',
            event_id: 'Event ID',
            tables: 'Tables',
            affected_dashboards: 'Dashboards',
            start_time: 'Start Time',
            end_time: 'End Time',
            status: 'Status',
            actions: 'Actions',
        },
        common: {}
    };
    return {
        t: {
            subscribe(run) {
                subscribers.add(run);
                run(tData);
                return () => subscribers.delete(run);
            }
        },
        _: (key) => key,
    };
});

vi.mock('$lib/stores/maintenance.svelte.js', () => ({
    maintenanceStore: mockStore,
    createMaintenanceStore: () => mockStore,
}));

// Mock the API module
vi.mock('$lib/api.js', () => ({
    api: {
        getEnvironments: vi.fn(() => Promise.resolve([])),
        getDashboards: vi.fn(() => Promise.resolve({ dashboards: [] })),
    },
    requestApi: vi.fn(),
}));

// Mock $app/navigation
vi.mock('$app/navigation', () => ({
    goto: vi.fn(),
}));

// Mock $app/stores
vi.mock('$app/stores', () => ({
    page: { subscribe: vi.fn() },
    navigating: { subscribe: vi.fn() },
    updated: { subscribe: vi.fn() },
}));

import { render, screen } from '@testing-library/svelte';
import MaintenanceEventsTable from '$lib/components/MaintenanceEventsTable.svelte';
import DashboardMaintenanceBadge from '$lib/components/DashboardMaintenanceBadge.svelte';

describe('MaintenanceEventsTable', () => {
    beforeEach(() => {
        vi.clearAllMocks();
        resetMockStore();
    });

    it('renders empty state when no active events', async () => {
        mockStoreState.activeEvents = [];
        mockStoreState.completedEvents = [];
        render(MaintenanceEventsTable);
        expect(screen.getByText('No active maintenance events')).toBeTruthy();
    });

    it('renders active events in the table', async () => {
        mockStoreState.activeEvents = [
            { id: 'ev-1', tables: ['raw.sales'], affected_count: 3, start_time: '2026-05-21T22:00:00Z', end_time: null, status: 'active' }
        ];
        mockStoreState.completedEvents = [];
        render(MaintenanceEventsTable);
        expect(screen.getByText('ev-1')).toBeTruthy();
    });

    it('renders Remove All button when events exist', async () => {
        mockStoreState.activeEvents = [
            { id: 'ev-1', tables: ['raw.sales'], affected_count: 3, start_time: '2026-05-21T22:00:00Z', end_time: null, status: 'active' }
        ];
        mockStoreState.completedEvents = [];
        render(MaintenanceEventsTable);
        expect(screen.getByText('Remove All')).toBeTruthy();
    });
});

describe('DashboardMaintenanceBadge', () => {
    beforeEach(() => {
        vi.clearAllMocks();
        resetMockStore();
    });

    it('renders nothing when no banner state for dashboard', async () => {
        mockStoreState.dashboardBanners = [];
        const { container } = render(DashboardMaintenanceBadge, {
            props: { dashboardId: 42 }
        });
        const badgeElements = container.querySelectorAll('.bg-orange-100');
        expect(badgeElements.length).toBe(0);
    });

    it('renders badge when banner is active for dashboard', async () => {
        mockStoreState.dashboardBanners = [
            { dashboard_id: 42, active: true, events: ['ev-1'], start_time: '2026-05-21T22:00:00Z', end_time: null }
        ];
        const { container } = render(DashboardMaintenanceBadge, {
            props: { dashboardId: 42 }
        });
        const badge = container.querySelector('.bg-orange-100');
        expect(badge).toBeTruthy();
        expect(badge?.textContent).toContain('Maintenance');
    });

    it('renders nothing when banner exists but not active for this dashboard', async () => {
        mockStoreState.dashboardBanners = [
            { dashboard_id: 57, active: true, events: ['ev-1'], start_time: '2026-05-21T22:00:00Z', end_time: null }
        ];
        const { container } = render(DashboardMaintenanceBadge, {
            props: { dashboardId: 42 }
        });
        const badge = container.querySelector('.bg-orange-100');
        expect(badge).toBeNull();
    });
});
// #endregion MaintenanceComponentTests