package cmd

import (
	"fmt"
	"regexp"
	"sync"
	"time"

	tea "github.com/charmbracelet/bubbletea"
)

const (
	playerMaxTitleLength = 30
)

var (
	regexpPosDur = regexp.MustCompile(`AV: (\d+):(\d+):(\d+) \/ (\d+):(\d+):(\d+)`)
)

type playerModel struct {
	// entry          *feedEntry
	// isPlayingVideo bool

	// // video information
	// videoDuration time.Duration
	// videoPosition time.Duration

	// TODO: make this smarter
	// finished entries to send messages about
	finishedEntries []int64

	mpv *MPVPLayer

	sync.RWMutex
}

func (m *playerModel) Init() tea.Cmd {
	m.mpv = NewMPVPlayer()

	return nil
}

func (m *playerModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := msg.(type) {
	case MsgPlayEntry:
		f := feedEntry(msg)
		go m.mpv.Queue(f)
	}

	// send message because it is finished
	fe := m.mpv.FinishedPlaying()
	if len(fe) > 0 {
		var cmds []tea.Cmd
		for _, e := range fe {
			cmds = append(cmds, func() tea.Msg { return MsgWatchedEntry(e.ID) })
		}
		return m, tea.Batch(cmds...)
	}

	return m, nil
}

func (m *playerModel) View() string {
	// return "NO DONT ASK"
	// return fmt.Sprintf("IsPlaying: %v", m.mpv.IsPlaying())

	if m.mpv.IsPlaying() {
		timePos := time.Time{}.Add(m.mpv.VideoPosition())
		timeDur := time.Time{}.Add(m.mpv.VideoDuration())

		// truncate name if needed
		// name := m.entry.Name
		name := m.mpv.CurrentlyPlaying().Name
		if len(name) > playerMaxTitleLength {
			name = name[0:playerMaxTitleLength] + "..."
		}

		return fmt.Sprintf("Playing: %s (%s/%s %.1f%%)",
			name,
			timePos.Format(time.TimeOnly),
			timeDur.Format(time.TimeOnly),
			videoPercentageWatched(m.mpv.VideoPosition(), m.mpv.VideoDuration()),
		)

	}

	return ""
}