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update.go
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update.go
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package main
import (
"time"
"github.com/charmbracelet/bubbles/list"
"github.com/charmbracelet/bubbles/progress"
tea "github.com/charmbracelet/bubbletea"
)
const (
_skipForwardSec = 10
_skipBackwardsSec = -10
)
func (m *Model) updateHomeScreen(msg tea.Msg) (tea.Model, tea.Cmd) {
// TODO: Cut down this big function.
var cmds []tea.Cmd
var listCmd tea.Cmd
m.list, listCmd = m.list.Update(msg)
m.list = fixListKeyBinding(m.list)
cmds = append(cmds, listCmd)
switch msg := msg.(type) {
case tea.WindowSizeMsg:
m.list.SetSize(msg.Width, msg.Height)
m.progress.Width = fineTuneSize(msg.Width, 0.4) //nolint:gomnd // fineTuning
m.width, m.height = msg.Width, msg.Height
m.displayedImg = "LOADING..."
cmds = append(cmds, m.lazyLoadImageCmd(m.selectedIdx))
case playMusic:
if !msg.continuePlaying {
break
}
music, _ := m.list.VisibleItems()[msg.idx].(*tuiMusic) // will always be *tuiMusic
m.currentPlaying = music.Name
musicCmd := m.playMusicCmd(msg.idx)
cmds = append(cmds, musicCmd)
case tea.KeyMsg:
if m.list.FilterState() == list.Filtering {
break
}
switch msg.String() {
case "up", "k", "down", "j", "right", "left":
m.selectedIdx = m.list.Index()
m.displayedImg = "LOADING..."
cmds = append(cmds, m.lazyLoadImageCmd(m.selectedIdx))
case "o", " ":
m.controller.PauseResume()
case "p":
err := m.controller.SeekSeconds(_skipForwardSec)
if err != nil {
cmds = append(cmds, errorCmd(err.Error()))
}
case "i":
err := m.controller.SeekSeconds(_skipBackwardsSec)
if err != nil {
cmds = append(cmds, errorCmd(err.Error()))
}
case "enter":
if m.done == nil {
m.done = make(chan struct{})
} else {
m.done <- struct{}{}
}
m.currentPlaying = m.list.VisibleItems()[m.selectedIdx].(*tuiMusic).Name
cmds = append(cmds, m.playMusicCmd(m.selectedIdx))
}
case gotImage:
if msg.idx != m.selectedIdx {
break
}
m.displayedImg = msg.image
case progressStatus:
cmd := m.progress.SetPercent(float64(msg))
cmds = append(cmds, cmd, m.progressCmd())
case progress.FrameMsg:
progressModel, progCmd := m.progress.Update(msg)
m.progress, _ = progressModel.(progress.Model)
cmds = append(cmds, progCmd)
case cmdError:
cmd := m.list.NewStatusMessage(msg.msg)
cmds = append(cmds, cmd)
}
return m, tea.Batch(cmds...)
}
type gotImage struct {
image string
idx int
}
func (m *Model) lazyLoadImageCmd(idx int) tea.Cmd {
return func() tea.Msg {
height := fineTuneSize(m.height, 0.55) //nolint:gomnd // fineTuning
width := fineTuneSize(m.width, 0.35) //nolint:gomnd // fineTuning
music, _ := m.list.VisibleItems()[idx].(*tuiMusic) // its will always be *TUIMusic
img, err := music.GetCoverArtASCII(height, width)
if err != nil {
img = "ERROR"
}
return gotImage{image: img, idx: idx}
}
}
type playMusic struct {
idx int
continuePlaying bool
}
func (m *Model) playMusicCmd(idx int) tea.Cmd {
return func() tea.Msg {
items := m.list.VisibleItems()
music, ok := items[idx].(*tuiMusic)
if !ok {
return errorCmd("playMusicCmd: item is not tuiMusic")
}
err := m.controller.Play(music.Music)
if err != nil {
return errorCmd(err.Error())
}
select {
case <-m.controller.Done:
next := (idx + 1) % len(items)
return playMusic{idx: next, continuePlaying: true}
case <-m.done:
return playMusic{idx: 0, continuePlaying: false}
}
}
}
type progressStatus float64
func (m *Model) progressCmd() tea.Cmd {
return tea.Tick((time.Second * 1), func(time.Time) tea.Msg {
prog, err := m.controller.Progress()
if err != nil {
prog = 0
}
return progressStatus(prog)
})
}
type cmdError struct {
msg string
}
func errorCmd(msg string) tea.Cmd {
return func() tea.Msg {
return cmdError{msg: msg}
}
}
func fixListKeyBinding(listModel list.Model) list.Model {
listModel.KeyMap.GoToStart.SetEnabled(false)
listModel.KeyMap.GoToEnd.SetEnabled(false)
return listModel
}