import path from "node:path";
import { getAllServers } from "@dokploy/server/services/server";
import { scheduleJob } from "node-schedule";
import { db } from "../../db/index";
import {
	cleanUpDockerBuilder,
	cleanUpSystemPrune,
	cleanUpUnusedImages,
} from "../docker/utils";
import { sendDockerCleanupNotifications } from "../notifications/docker-cleanup";
import { execAsync, execAsyncRemote } from "../process/execAsync";
import { getS3Credentials, scheduleBackup } from "./utils";

import { member } from "@dokploy/server/db/schema";
import type { BackupSchedule } from "@dokploy/server/services/backup";
import { eq } from "drizzle-orm";
import { startLogCleanup } from "../access-log/handler";

export const initCronJobs = async () => {
	console.log("Setting up cron jobs....");

	const admin = await db.query.member.findFirst({
		where: eq(member.role, "owner"),
		with: {
			user: true,
		},
	});

	if (!admin) {
		return;
	}

	if (admin.user.enableDockerCleanup) {
		scheduleJob("docker-cleanup", "0 0 * * *", async () => {
			console.log(
				`Docker Cleanup ${new Date().toLocaleString()}]  Running docker cleanup`,
			);
			await cleanUpUnusedImages();
			await cleanUpDockerBuilder();
			await cleanUpSystemPrune();
			await sendDockerCleanupNotifications(admin.user.id);
		});
	}

	const servers = await getAllServers();

	for (const server of servers) {
		const { serverId, enableDockerCleanup, name } = server;
		if (enableDockerCleanup) {
			scheduleJob(serverId, "0 0 * * *", async () => {
				console.log(
					`SERVER-BACKUP[${new Date().toLocaleString()}] Running Cleanup ${name}`,
				);
				await cleanUpUnusedImages(serverId);
				await cleanUpDockerBuilder(serverId);
				await cleanUpSystemPrune(serverId);
				await sendDockerCleanupNotifications(
					admin.user.id,
					`Docker cleanup for Server ${name} (${serverId})`,
				);
			});
		}
	}

	const backups = await db.query.backups.findMany({
		with: {
			destination: true,
			postgres: true,
			mariadb: true,
			mysql: true,
			mongo: true,
			user: true,
			compose: true,
		},
	});

	for (const backup of backups) {
		try {
			if (backup.enabled) {
				scheduleBackup(backup);
				console.log(
					`[Backup] ${backup.databaseType} Enabled with cron: [${backup.schedule}]`,
				);
			}
		} catch (error) {
			console.error(`[Backup] ${backup.databaseType} Error`, error);
		}
	}

	if (admin?.user.logCleanupCron) {
		await startLogCleanup(admin.user.logCleanupCron);
	}
};

export const keepLatestNBackups = async (
	backup: BackupSchedule,
	serverId?: string | null,
) => {
	// 0 also immediately returns which is good as the empty "keep latest" field in the UI
	// is saved as 0 in the database
	if (!backup.keepLatestCount) return;

	try {
		const rcloneFlags = getS3Credentials(backup.destination);
		const backupFilesPath = path.join(
			`:s3:${backup.destination.bucket}`,
			backup.prefix,
		);

		// --include "*.sql.gz" or "*.zip" ensures nothing else other than the dokploy backup files are touched by rclone
		const rcloneList = `rclone lsf ${rcloneFlags.join(" ")} --include "*${backup.databaseType === "web-server" ? ".zip" : ".sql.gz"}" ${backupFilesPath}`;
		// when we pipe the above command with this one, we only get the list of files we want to delete
		const sortAndPickUnwantedBackups = `sort -r | tail -n +$((${backup.keepLatestCount}+1)) | xargs -I{}`;
		// this command deletes the files
		// to test the deletion before actually deleting we can add --dry-run before ${backupFilesPath}/{}
		const rcloneDelete = `rclone delete ${rcloneFlags.join(" ")} ${backupFilesPath}/{}`;

		const rcloneCommand = `${rcloneList} | ${sortAndPickUnwantedBackups} ${rcloneDelete}`;

		if (serverId) {
			await execAsyncRemote(serverId, rcloneCommand);
		} else {
			await execAsync(rcloneCommand);
		}
	} catch (error) {
		console.error(error);
	}
};