import { fireEvent, render, screen } from "@testing-library/react";
import { MemoryRouter } from "react-router-dom";
import { beforeEach, describe, expect, it, vi } from "vitest";
import { DashboardPage } from "../../pages/DashboardPage";

// Mock data for tests with medications
const mockMeds = [
	{
		id: 1,
		name: "Aspirin",
		packCount: 1,
		blistersPerPack: 2,
		pillsPerBlister: 10,
		looseTablets: 5,
		takenBy: ["John"],
		blisters: [{ usage: 1, every: 1, start: "2024-01-01T09:00:00Z" }],
		intakeRemindersEnabled: true,
		notes: "Take with food",
		expiryDate: "2025-12-31",
		imageUrl: null,
		updatedAt: null,
	},
	{
		id: 2,
		name: "Vitamin D",
		packCount: 0,
		blistersPerPack: 1,
		pillsPerBlister: 30,
		looseTablets: 3,
		takenBy: [],
		blisters: [{ usage: 1, every: 1, start: "2024-01-01T08:00:00Z" }],
		intakeRemindersEnabled: false,
		notes: null,
		expiryDate: null,
		imageUrl: null,
		updatedAt: null,
	},
];

const mockCoverage = {
	all: [
		{
			name: "Aspirin",
			medsLeft: 25,
			daysLeft: 25,
			depletionDate: "2025-02-15",
			depletionTime: Date.now() + 25 * 86400000,
			nextDose: null,
		},
		{
			name: "Vitamin D",
			medsLeft: 3,
			daysLeft: 3,
			depletionDate: "2025-01-25",
			depletionTime: Date.now() + 3 * 86400000,
			nextDose: null,
		},
	],
	low: [
		{
			name: "Vitamin D",
			medsLeft: 3,
			daysLeft: 3,
			depletionDate: "2025-01-25",
			depletionTime: Date.now() + 3 * 86400000,
			nextDose: null,
		},
	],
};

const mockFutureDays = [
	{
		dateStr: "Mon, Jan 22",
		date: new Date(),
		isPast: false,
		meds: [
			{
				medName: "Aspirin",
				total: 1,
				doses: [{ id: `1-0-${Date.now()}`, timeStr: "09:00", when: Date.now(), usage: 1, takenBy: ["John"] }],
				lastWhen: Date.now(),
			},
		],
	},
];

const mockPastDays = [
	{
		dateStr: "Sun, Jan 21",
		date: new Date(Date.now() - 86400000),
		isPast: true,
		meds: [
			{
				medName: "Aspirin",
				total: 1,
				doses: [
					{
						id: `1-0-${Date.now() - 86400000}`,
						timeStr: "09:00",
						when: Date.now() - 86400000,
						usage: 1,
						takenBy: ["John"],
					},
				],
				lastWhen: Date.now() - 86400000,
			},
		],
	},
];

// Default mock factory
const createMockAppContext = (overrides = {}) => ({
	meds: [],
	settings: {
		lowStockThreshold: 30,
		criticalStockThreshold: 7,
		expiryWarningDays: 30,
		lowStockDays: 7,
		normalStockDays: 30,
		highStockDays: 90,
		emailEnabled: false,
		shoutrrrEnabled: false,
		reminderDaysBefore: 7,
		notificationEmail: "",
		lastAutoEmailSent: null,
		lastNotificationType: null,
		lastNotificationChannel: null,
	},
	scheduleDays: 30,
	setScheduleDays: vi.fn(),
	showPastDays: false,
	setShowPastDays: vi.fn(),
	pastDays: [],
	futureDays: [],
	takenDoses: new Set(),
	dismissedDoses: new Set(),
	markDoseTaken: vi.fn(),
	undoDoseTaken: vi.fn(),
	coverage: { all: [], low: [] },
	coverageByMed: {},
	depletionByMed: {},
	stockThresholds: {
		lowStockDays: 7,
		normalStockDays: 30,
		highStockDays: 90,
		criticalStockDays: 7,
		expiryWarningDays: 30,
	},
	manuallyExpandedDays: new Set(),
	manuallyCollapsedDays: new Set(),
	toggleDayCollapse: vi.fn(),
	openMedDetail: vi.fn(),
	openUserFilter: vi.fn(),
	openShareDialog: vi.fn(),
	openScheduleLightbox: vi.fn(),
	missedPastDoseIds: [],
	getDayStockStatus: vi.fn(() => "success"),
	getDoseId: vi.fn((id, person) => (person ? `${id}-${person}` : id)),
	showClearMissedConfirm: false,
	setShowClearMissedConfirm: vi.fn(),
	clearingMissed: false,
	dismissMissedDoses: vi.fn(),
	...overrides,
});

let mockContextValue = createMockAppContext();

// Mock the context
vi.mock("../../context", () => ({
	useAppContext: () => mockContextValue,
}));

vi.mock("../../components/Auth", () => ({
	useAuth: () => ({
		user: { id: 1, username: "testuser" },
	}),
}));

describe("DashboardPage", () => {
	beforeEach(() => {
		vi.clearAllMocks();
		localStorage.clear();
		mockContextValue = createMockAppContext();
	});

	it("renders dashboard page", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should render the dashboard section
		const section = document.querySelector("section.grid");
		expect(section).toBeInTheDocument();
	});

	it("renders reorder section title", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		expect(screen.getByText(/dashboard\.reorder\.title/i)).toBeInTheDocument();
	});

	it("renders overview section title", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		expect(screen.getByText(/dashboard\.overview\.title/i)).toBeInTheDocument();
	});

	it("renders schedule section title", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		expect(screen.getByText(/dashboard\.schedules\.title/i)).toBeInTheDocument();
	});

	it("renders empty state when no medications", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// With no meds, should show the dashboard cards
		const cards = document.querySelectorAll(".card");
		expect(cards.length).toBeGreaterThan(0);
	});

	it("renders schedule days selector", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should have schedule days select dropdown
		const select = document.querySelector(".schedule-days-select");
		expect(select).toBeInTheDocument();
	});

	it("renders timeline section", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should have timeline div
		const timeline = document.querySelector(".timeline");
		expect(timeline).toBeInTheDocument();
	});

	it("renders table headers for overview", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should have table headers
		expect(screen.getByText(/table\.name/i)).toBeInTheDocument();
		expect(screen.getByText(/table\.daysLeft/i)).toBeInTheDocument();
	});

	it("renders multiple cards", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Dashboard has multiple cards
		const cards = document.querySelectorAll(".card");
		expect(cards.length).toBeGreaterThan(2);
	});

	it("renders card heads", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should have card heads for each section
		const cardHeads = document.querySelectorAll(".card-head");
		expect(cardHeads.length).toBeGreaterThan(0);
	});

	it("renders table headers", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should have table head
		const tableHead = document.querySelector(".table-head");
		expect(tableHead).toBeInTheDocument();
	});

	it("renders table structure", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should have table class
		const table = document.querySelector(".table");
		expect(table).toBeInTheDocument();
	});

	it("renders no meds message for reorder section", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// When no meds, should show empty state
		expect(screen.getByText(/dashboard\.reorder\.noMeds/i)).toBeInTheDocument();
	});
});

describe("DashboardPage interactions", () => {
	beforeEach(() => {
		vi.clearAllMocks();
		localStorage.clear();
		mockContextValue = createMockAppContext();
	});

	it("has schedule days options", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should have 30, 90, 180 day options
		const select = document.querySelector(".schedule-days-select");
		expect(select).toBeInTheDocument();

		const options = select?.querySelectorAll("option");
		expect(options?.length).toBe(3);
	});

	it("can change schedule days", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		const select = document.querySelector(".schedule-days-select") as HTMLSelectElement;
		expect(select).toBeInTheDocument();

		fireEvent.change(select, { target: { value: "90" } });
	});
});

describe("DashboardPage structure", () => {
	beforeEach(() => {
		vi.clearAllMocks();
		localStorage.clear();
		mockContextValue = createMockAppContext();
	});

	it("renders multiple section grids", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		const sections = document.querySelectorAll("section.grid");
		expect(sections.length).toBeGreaterThan(0);
	});

	it("renders card head actions", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		const cardHeadActions = document.querySelector(".card-head-actions");
		expect(cardHeadActions).toBeInTheDocument();
	});

	it("renders all table columns", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should have all expected table columns
		expect(screen.getByText(/table\.name/i)).toBeInTheDocument();
		expect(screen.getByText(/table\.stock(?!Details)/i)).toBeInTheDocument();
		expect(screen.getByText(/table\.stockDetails/i)).toBeInTheDocument();
		expect(screen.getByText(/table\.daysLeft/i)).toBeInTheDocument();
		expect(screen.getByText(/table\.runsOut/i)).toBeInTheDocument();
		expect(screen.getByText(/table\.expiry/i)).toBeInTheDocument();
		expect(screen.getByText(/table\.status/i)).toBeInTheDocument();
	});
});

describe("DashboardPage with medications", () => {
	beforeEach(() => {
		vi.clearAllMocks();
		localStorage.clear();
		mockContextValue = createMockAppContext({
			meds: mockMeds,
			coverage: mockCoverage,
			coverageByMed: {
				Aspirin: mockCoverage.all[0],
				"Vitamin D": mockCoverage.all[1],
			},
			depletionByMed: {
				Aspirin: Date.now() + 25 * 86400000,
				"Vitamin D": Date.now() + 3 * 86400000,
			},
			futureDays: mockFutureDays,
		});
	});

	it("renders medication rows in overview table", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should show medication names (may appear in multiple places)
		const aspirinElements = screen.getAllByText("Aspirin");
		const vitaminDElements = screen.getAllByText("Vitamin D");
		expect(aspirinElements.length).toBeGreaterThan(0);
		expect(vitaminDElements.length).toBeGreaterThan(0);
	});

	it("renders low stock section with low stock medications", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should show the low stock medication name
		const vitaminDElements = screen.getAllByText("Vitamin D");
		expect(vitaminDElements.length).toBeGreaterThan(0);
	});

	it("renders taken by badges", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should show taken by badge for Aspirin
		const johnBadges = screen.getAllByText("John");
		expect(johnBadges.length).toBeGreaterThan(0);
	});

	it("renders medication icons for reminders and notes", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Aspirin has intakeRemindersEnabled and notes
		const reminderIcons = document.querySelectorAll(".reminder-icon");
		expect(reminderIcons.length).toBeGreaterThan(0);

		const notesIcons = document.querySelectorAll(".notes-icon");
		expect(notesIcons.length).toBeGreaterThan(0);
	});

	it("renders schedule timeline with future doses", () => {
		// Need showFutureDays: true for day-blocks to render
		mockContextValue = createMockAppContext({
			meds: mockMeds,
			coverage: mockCoverage,
			coverageByMed: {
				Aspirin: mockCoverage.all[0],
			},
			futureDays: mockFutureDays,
			showFutureDays: true,
		});

		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should show day block
		const dayBlocks = document.querySelectorAll(".day-block");
		expect(dayBlocks.length).toBeGreaterThan(0);
	});

	it("calls openMedDetail when clicking medication row", () => {
		const openMedDetail = vi.fn();
		mockContextValue = createMockAppContext({
			meds: mockMeds,
			coverage: mockCoverage,
			coverageByMed: { Aspirin: mockCoverage.all[0] },
			openMedDetail,
		});

		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Click on medication row
		const aspirinRow = screen.getAllByText("Aspirin")[0].closest(".table-row");
		if (aspirinRow) {
			fireEvent.click(aspirinRow);
			expect(openMedDetail).toHaveBeenCalled();
		}
	});

	it("calls openUserFilter when clicking taken by badge", () => {
		const openUserFilter = vi.fn();
		mockContextValue = createMockAppContext({
			meds: mockMeds,
			coverage: mockCoverage,
			coverageByMed: { Aspirin: mockCoverage.all[0] },
			openUserFilter,
		});

		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Click on taken by badge
		const johnBadge = screen.getAllByText("John")[0];
		fireEvent.click(johnBadge);
		expect(openUserFilter).toHaveBeenCalledWith("John");
	});
});

describe("DashboardPage with email notifications", () => {
	beforeEach(() => {
		vi.clearAllMocks();
		localStorage.clear();
		mockContextValue = createMockAppContext({
			meds: mockMeds,
			coverage: mockCoverage,
			settings: {
				...createMockAppContext().settings,
				emailEnabled: true,
				emailStockReminders: true,
				notificationEmail: "test@example.com",
			},
		});
	});

	it("renders reminder status bar when email enabled", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should show reminder status bar
		const statusBar = document.querySelector(".reminder-status-bar");
		expect(statusBar).toBeInTheDocument();
	});

	it("hides reorder reminder card when reminders are enabled (to avoid redundancy)", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Reorder card should NOT be shown when reminders are active (Reminder Bar shows the info instead)
		expect(screen.queryByText(/dashboard\.reorder\.sendReminder/i)).not.toBeInTheDocument();
	});
});

describe("DashboardPage with shoutrrr notifications", () => {
	beforeEach(() => {
		vi.clearAllMocks();
		localStorage.clear();
		mockContextValue = createMockAppContext({
			meds: mockMeds,
			coverage: mockCoverage,
			settings: {
				...createMockAppContext().settings,
				shoutrrrEnabled: true,
				shoutrrrStockReminders: true,
			},
		});
	});

	it("renders notification status bar when shoutrrr enabled", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should show status bar
		const statusBar = document.querySelector(".reminder-status-bar");
		expect(statusBar).toBeInTheDocument();
	});
});

describe("DashboardPage with past days", () => {
	beforeEach(() => {
		vi.clearAllMocks();
		localStorage.clear();
		mockContextValue = createMockAppContext({
			meds: mockMeds,
			coverage: mockCoverage,
			pastDays: mockPastDays,
			futureDays: mockFutureDays,
			showPastDays: false,
			missedPastDoseIds: [`1-0-${Date.now() - 86400000}-John`],
		});
	});

	it("renders past days toggle when past days exist", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should show past days toggle
		const toggle = document.querySelector(".past-days-toggle");
		expect(toggle).toBeInTheDocument();
	});

	it("shows missed dose warning count", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should show warning with missed count
		const warning = document.querySelector(".past-days-warning");
		expect(warning).toBeInTheDocument();
	});

	it("toggles past days visibility", () => {
		const setShowPastDays = vi.fn();
		mockContextValue = createMockAppContext({
			pastDays: mockPastDays,
			showPastDays: false,
			setShowPastDays,
			missedPastDoseIds: [],
		});

		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		const toggle = document.querySelector(".past-days-toggle");
		if (toggle) {
			fireEvent.click(toggle);
			expect(setShowPastDays).toHaveBeenCalledWith(true);
		}
	});

	it("shows clear missed doses button when there are missed doses", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should show clear missed button
		const clearBtn = document.querySelector(".clear-missed-btn");
		expect(clearBtn).toBeInTheDocument();
	});
});

describe("DashboardPage with expanded past days", () => {
	beforeEach(() => {
		vi.clearAllMocks();
		localStorage.clear();
		mockContextValue = createMockAppContext({
			meds: mockMeds,
			coverage: mockCoverage,
			coverageByMed: { Aspirin: mockCoverage.all[0] },
			pastDays: mockPastDays,
			futureDays: mockFutureDays,
			showPastDays: true,
			manuallyExpandedDays: new Set(["Sun, Jan 21"]),
			getDayStockStatus: vi.fn(() => "success"),
		});
	});

	it("renders past day blocks when showPastDays is true", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should show past day block
		const pastDayBlocks = document.querySelectorAll(".day-block.past");
		expect(pastDayBlocks.length).toBeGreaterThan(0);
	});
});

describe("DashboardPage dose interactions", () => {
	beforeEach(() => {
		vi.clearAllMocks();
		localStorage.clear();
	});

	it("calls markDoseTaken when clicking take button", () => {
		const markDoseTaken = vi.fn();
		mockContextValue = createMockAppContext({
			meds: mockMeds,
			coverage: mockCoverage,
			coverageByMed: { Aspirin: mockCoverage.all[0] },
			depletionByMed: { Aspirin: Date.now() + 25 * 86400000 },
			futureDays: mockFutureDays,
			markDoseTaken,
		});

		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Find and click take button
		const takeBtn = document.querySelector(".dose-btn.take");
		if (takeBtn) {
			fireEvent.click(takeBtn);
			expect(markDoseTaken).toHaveBeenCalled();
		}
	});

	it("calls undoDoseTaken when clicking undo button", () => {
		const undoDoseTaken = vi.fn();
		const doseId = `1-0-${Date.now()}-John`;
		mockContextValue = createMockAppContext({
			meds: mockMeds,
			coverage: mockCoverage,
			coverageByMed: { Aspirin: mockCoverage.all[0] },
			depletionByMed: { Aspirin: Date.now() + 25 * 86400000 },
			futureDays: mockFutureDays,
			takenDoses: new Set([doseId]),
			undoDoseTaken,
			getDoseId: vi.fn(() => doseId),
		});

		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Find and click undo button
		const undoBtn = document.querySelector(".dose-btn.undo");
		if (undoBtn) {
			fireEvent.click(undoBtn);
			expect(undoDoseTaken).toHaveBeenCalled();
		}
	});
});

describe("DashboardPage good stock state", () => {
	beforeEach(() => {
		vi.clearAllMocks();
		localStorage.clear();
		mockContextValue = createMockAppContext({
			meds: mockMeds,
			coverage: {
				all: [
					{
						name: "Aspirin",
						medsLeft: 100,
						daysLeft: 100,
						depletionDate: "2025-05-01",
						depletionTime: Date.now() + 100 * 86400000,
						nextDose: null,
					},
				],
				low: [],
			},
		});
	});

	it("shows all good message when no low stock", () => {
		render(
			<MemoryRouter>
				<DashboardPage />
			</MemoryRouter>
		);

		// Should show all good message
		expect(screen.getByText(/dashboard\.reorder\.allGood/i)).toBeInTheDocument();
	});
});