package main

import (
	"fmt"
	"log"
	"time"

	"maunium.net/go/mautrix"
)

type nunWatch struct {
	fail    int
	curPost post
	stop    chan bool
	client  *mautrix.Client
	timer   int
}

func newNunWatch(stop chan bool, c *mautrix.Client, t int) *nunWatch {
	return &nunWatch{0, post{}, stop, c, t}
}

func (n *nunWatch) SetTimer(t int) {
	n.timer = t
	n.fail = 0
}

func (n *nunWatch) Main() {
	ticker := time.NewTicker(time.Duration(n.timer) * time.Minute)
	curT := n.timer
	for {
		select {
		case <-n.stop:
			return
		case <-ticker.C:

			newPost, err := getNewestPost("LittleNuns")
			if err != nil {
				log.Printf("error getting newest post: %v", err)
				log.Println("skipping this cycle, incrementing fail count")
				n.fail++
				if n.fail > 5 {
					log.Fatal("fail count too high; ending loop")
					return
				} else if n.fail > 3 {
					log.Printf("over three failures, increasing tick time to %v minutes", 3*n.timer)
					ticker.Reset(3 * time.Duration(n.timer) * time.Minute)
					break
				} else {
					log.Printf("fail count %v", n.fail)
					break
				}
			}
			n.fail = 0
			ticker.Reset(time.Duration(n.timer) * time.Minute)
			if curT != n.timer {
				log.Println("updating nunwatch timer")
				ticker.Reset(time.Duration(n.timer) * time.Minute)
				n.fail = 0
				curT = n.timer
			}

			if n.curPost.Title != newPost.Title {
				n.curPost = newPost
				var cur post
				err := n.client.GetAccountData("nun.newest", &cur)
				if err != nil {
					log.Printf("tried to get saved account data but failed %v", err)
					cur.Number = 0
				}
				roomResp, err := n.client.JoinedRooms()
				if err != nil {
					log.Printf("error getting joined rooms: %v", err)
					break
				}
				rooms := roomResp.JoinedRooms
				for _, room := range rooms {
					log.Printf("posting %v", n.curPost.Number)
					if n.curPost.Number != cur.Number {
						n.client.SendText(room, fmt.Sprintf("%v\n%v", n.curPost.Title, n.curPost.Link))
						if n.curPost.Number > 0 {
							err := n.client.SetAccountData("nun.newest", n.curPost)
							if err != nil {
								log.Printf("error saving current post: %v", err)
							}
						}
					}
				}

			}
		}
	}
}