package main

import (
	"context"
	"embed"
	"net/http"
	"os/signal"
	"syscall"
	"time"

	"github.com/gin-gonic/gin"
	"github.com/robfig/cron/v3"
	log "github.com/sirupsen/logrus"
)

type AdminConfig struct {
	Addr string `json:"addr"`
}

//go:embed assets
var assets embed.FS

func NewAdmin() *AdminConfig {
	log.WithFields(log.Fields{}).Debugf("starting")
	defer log.WithFields(log.Fields{}).Debugf("done")

	a := &AdminConfig{
		Addr: "0.0.0.0:8080",
	}

	return a
}

func (a *AdminConfig) Run() {
	log.WithFields(log.Fields{}).Debugf("starting")
	defer log.WithFields(log.Fields{}).Debugf("done")

	// Create context that listens for the interrupt signal from the OS.
	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
	defer stop()

	if !*debug {
		gin.SetMode(gin.ReleaseMode)
	}

	r := gin.Default()

	r.GET("/run", ApiRun)
	r.GET("/run/:app", ApiRunApp)

	r.GET("/save", ApiSave)

	r.GET("/config", ApiConfig)
	r.GET("/config/:app", ApiConfigApp)

	srv := &http.Server{
		Addr:    a.Addr,
		Handler: r,
	}

	go func() {
		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			log.WithFields(log.Fields{"call": "http.ListenAndServe", "attr": a.Addr, "error": err}).Errorf("")
		}
	}()

	c := cron.New(cron.WithLocation(time.UTC))
	if _, err := c.AddFunc("0 * * * *", func() { cfg.Run() }); err != nil {
		log.WithFields(log.Fields{"call": "cron.AddFunc", "error": err}).Errorf("")
	}
	c.Start()
	log.WithFields(log.Fields{"call": "cron.Start"}).Debugf("cron started")

	// Listen for the interrupt signal.
	<-ctx.Done()

	// Restore default behavior on the interrupt signal and notify user of shutdown.
	stop()
	log.WithFields(log.Fields{"call": "stop"}).Warnf("shutting down")

	// The context is used to inform the server it has 5 seconds to finish
	// the request it is currently handling
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()
	if err := srv.Shutdown(ctx); err != nil {
		log.WithFields(log.Fields{"call": "http.Shutdown", "error": err}).Errorf("shutting down")
	}

}