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package main

import (
	"encoding/json"
	"log"

	"git.simponic.xyz/simponic/backup-notify/api"
	"git.simponic.xyz/simponic/backup-notify/args"
	"git.simponic.xyz/simponic/backup-notify/database"
	"git.simponic.xyz/simponic/backup-notify/ntfy"
	"git.simponic.xyz/simponic/backup-notify/scheduler"
	"github.com/joho/godotenv"
)

func main() {
	log.SetFlags(log.LstdFlags | log.Lshortfile)

	err := godotenv.Load()
	if err != nil {
		log.Println("could not load .env file:", err)
	}

	argv, err := args.GetArgs()
	if err != nil {
		log.Fatal(err)
	}

	dbConn := database.MakeConn(&argv.DatabasePath)
	defer dbConn.Close()

	if argv.Migrate {
		_, err = database.Migrate(dbConn)
		if err != nil {
			log.Fatal(err)
		}
		log.Println("database migrated successfully")
	}

	if argv.Scheduler {
		scheduler.StartScheduler(dbConn, argv)
	}

	if argv.NtfyEndpoint != "" {
		ntfy := ntfy.MakeNtfyWatcher(argv.NtfyEndpoint, argv.NtfyBackupTopics)
		notifications := ntfy.Watch()

		go func() {
			for notification := range notifications {
				message := notification.Text
				messageStruct := struct {
					Id      string `json:"id"`
					Time    int    `json:"time"`
					Message string `json:"message"`
					Event   string `json:"event"`
				}{}

				err := json.Unmarshal([]byte(message), &messageStruct)
				if err != nil {
					log.Println("could not unmarshal message:", err)
					continue
				}

				if messageStruct.Event == "keepalive" {
					log.Println("received keepalive message")
					continue
				}

				if messageStruct.Event != "message" {
					log.Println("received unknown event:", messageStruct.Event)
					continue
				}

				log.Println("received backup host:", messageStruct.Message)
				err = database.ReceivedBackup(dbConn, messageStruct.Message)
				if err != nil {
					log.Println("could not record backup:", err)
				}
			}
		}()
	}

	if argv.Server {
		server := api.MakeServer(argv, dbConn)
		log.Println("🚀🚀 API listening on port", argv.Port)

		go func() {
			err = server.ListenAndServe()
			if err != nil {
				log.Fatal(err)
			}
		}()
	}

	select {} // block forever
}