import StatusPage from "../../models/StatusPage.js";
import Monitor from "../../models/Monitor.js";
import { NormalizeData } from "../../../utils/dataUtils.js";
import ServiceRegistry from "../../../service/serviceRegistry.js";
import StringService from "../../../service/stringService.js";

const SERVICE_NAME = "statusPageModule";

const createStatusPage = async (statusPageData, image) => {
	const stringService = ServiceRegistry.get(StringService.SERVICE_NAME);

	try {
		const statusPage = new StatusPage({ ...statusPageData });
		if (image) {
			statusPage.logo = {
				data: image.buffer,
				contentType: image.mimetype,
			};
		}
		await statusPage.save();
		return statusPage;
	} catch (error) {
		if (error?.code === 11000) {
			// Handle duplicate URL errors
			error.status = 400;
			error.message = stringService.statusPageUrlNotUnique;
		}
		error.service = SERVICE_NAME;
		error.method = "createStatusPage";
		throw error;
	}
};

const updateStatusPage = async (statusPageData, image) => {
	try {
		if (image) {
			statusPageData.logo = {
				data: image.buffer,
				contentType: image.mimetype,
			};
		}else{
			statusPageData.logo = null;
		}

		if (statusPageData.deleteSubmonitors === "true") {
			statusPageData.subMonitors = [];
		}
		const statusPage = await StatusPage.findOneAndUpdate(
			{ url: statusPageData.url },
			statusPageData,
			{
				new: true,
			}
		);

		return statusPage;
	} catch (error) {
		error.service = SERVICE_NAME;
		error.method = "updateStatusPage";
		throw error;
	}
};

const getDistributedStatusPageByUrl = async ({ url, daysToShow = 30 }) => {
	const stringService = ServiceRegistry.get(StringService.SERVICE_NAME);
	try {
		const statusPage = await StatusPage.findOne({ url }).lean();

		if (!statusPage) {
			const error = new Error(stringService.statusPageNotFound);
			error.status = 404;
			throw error;
		}

		// No sub monitors, return status page
		if (statusPage.subMonitors.length === 0) {
			return statusPage;
		}
		// Sub monitors, return status page with sub monitors
		const daysAgo = new Date();
		daysAgo.setDate(daysAgo.getDate() - daysToShow);

		const subMonitors = await Monitor.aggregate([
			{ $match: { _id: { $in: statusPage.subMonitors } } },
			{
				$addFields: {
					orderIndex: { $indexOfArray: [statusPage.subMonitors, "$_id"] },
				},
			},

			// Return 30 days of checks by default
			{
				$lookup: {
					from: "checks",
					let: { monitorId: "$_id" },
					pipeline: [
						{
							$match: {
								$expr: {
									$and: [
										{ $eq: ["$monitorId", "$$monitorId"] },
										{ $gte: ["$updatedAt", daysAgo] },
									],
								},
							},
						},
						{
							$group: {
								_id: {
									$dateToString: { format: "%Y-%m-%d", date: "$updatedAt" },
								},
								responseTime: {
									$avg: "$responseTime",
								},
								trueCount: {
									$sum: {
										$cond: [{ $eq: ["$status", true] }, 1, 0],
									},
								},
								totalCount: {
									$sum: 1,
								},
							},
						},
						{
							$project: {
								_id: 1,
								responseTime: 1,
								upPercentage: {
									$cond: [
										{ $eq: ["$totalCount", 0] },
										0,
										{ $multiply: [{ $divide: ["$trueCount", "$totalCount"] }, 100] },
									],
								},
							},
						},
						{
							$sort: { _id: -1 },
						},
					],
					as: "checks",
				},
			},
			{ $sort: { orderIndex: 1 } },
			{ $project: { orderIndex: 0 } },
		]);

		const normalizedSubMonitors = subMonitors.map((monitor) => {
			return {
				...monitor,
				checks: NormalizeData(monitor.checks, 10, 100),
			};
		});
		return { ...statusPage, subMonitors: normalizedSubMonitors };
	} catch (error) {
		error.service = SERVICE_NAME;
		error.method = "getDistributedStatusPageByUrl";
		throw error;
	}
};

const getStatusPageByUrl = async (url, type) => {
	// TODO This is deprecated, can remove and have controller call getStatusPage
	try {
		return getStatusPage(url);
	} catch (error) {
		error.service = SERVICE_NAME;
		error.method = "getStatusPageByUrl";
		throw error;
	}
};

const getStatusPagesByTeamId = async (teamId) => {
	try {
		const statusPages = await StatusPage.find({ teamId });
		return statusPages;
	} catch (error) {
		error.service = SERVICE_NAME;
		error.method = "getStatusPagesByTeamId";
		throw error;
	}
};

const getStatusPage = async (url) => {
	const stringService = ServiceRegistry.get(StringService.SERVICE_NAME);

	try {
		const statusPageQuery = await StatusPage.aggregate([
			{ $match: { url: url } },
			{
				$set: {
					originalMonitors: "$monitors",
				},
			},
			{
				$lookup: {
					from: "monitors",
					localField: "monitors",
					foreignField: "_id",
					as: "monitors",
				},
			},
			{
				$unwind: "$monitors",
			},
			{
				$lookup: {
					from: "checks",
					let: { monitorId: "$monitors._id" },
					pipeline: [
						{
							$match: {
								$expr: { $eq: ["$monitorId", "$$monitorId"] },
							},
						},
						{ $sort: { createdAt: -1 } },
						{ $limit: 25 },
					],
					as: "monitors.checks",
				},
			},
			{
				$addFields: {
					"monitors.orderIndex": {
						$indexOfArray: ["$originalMonitors", "$monitors._id"],
					},
				},
			},
			{
				$group: {
					_id: "$_id",
					statusPage: { $first: "$$ROOT" },
					monitors: { $push: "$monitors" },
				},
			},
			{
				$project: {
					statusPage: {
						_id: 1,
						color: 1,
						companyName: 1,
						isPublished: 1,
						logo: 1,
						originalMonitors: 1,
						showCharts: 1,
						showUptimePercentage: 1,
						timezone: 1,
						url: 1,
					},
					monitors: {
						$sortArray: {
							input: "$monitors",
							sortBy: { orderIndex: 1 },
						},
					},
				},
			},
		]);
		if (!statusPageQuery.length) {
			const error = new Error(stringService.statusPageNotFound);
			error.status = 404;
			throw error;
		}

		const { statusPage, monitors } = statusPageQuery[0];

		const normalizedMonitors = monitors.map((monitor) => {
			return {
				...monitor,
				checks: NormalizeData(monitor.checks, 10, 100),
			};
		});

		return { statusPage, monitors: normalizedMonitors };
	} catch (error) {
		error.service = SERVICE_NAME;
		error.method = "getStatusPageByUrl";
		throw error;
	}
};

const deleteStatusPage = async (url) => {
	try {
		await StatusPage.deleteOne({ url });
	} catch (error) {
		error.service = SERVICE_NAME;
		error.method = "deleteStatusPage";
		throw error;
	}
};

const deleteStatusPagesByMonitorId = async (monitorId) => {
	try {
		await StatusPage.deleteMany({ monitors: { $in: [monitorId] } });
	} catch (error) {
		error.service = SERVICE_NAME;
		error.method = "deleteStatusPageByMonitorId";
		throw error;
	}
};

export {
	createStatusPage,
	updateStatusPage,
	getStatusPagesByTeamId,
	getStatusPage,
	getStatusPageByUrl,
	getDistributedStatusPageByUrl,
	deleteStatusPage,
	deleteStatusPagesByMonitorId,
};