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uploadutil.go
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uploadutil.go
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package uploadutil
import (
"bufio"
"errors"
"io"
"net/http"
"sync/atomic"
"github.com/diamondburned/gotk4/pkg/core/glib"
"github.com/diamondburned/gotk4/pkg/gtk/v4"
"github.com/diamondburned/gotkit/gtkutil/cssutil"
"github.com/diamondburned/gotktrix/internal/gotktrix"
"github.com/diamondburned/gotrix/matrix"
)
var progressBarCSS = cssutil.Applier("uploadutil-progress", `
.uploadutil-progress.failed text {
color: red;
}
.uploadutil-progress.failed progress {
background-color: red;
border-color: red;
color: red;
}
`)
// ProgressBar is a wrapper around gtk.ProgressBar.
type ProgressBar struct {
*gtk.ProgressBar
total int64
old int64
new int64 // atomic
updater glib.SourceHandle
}
func NewProgressBar() *ProgressBar {
p := &ProgressBar{
ProgressBar: gtk.NewProgressBar(),
new: 0,
old: 0,
total: 0,
}
p.SetPulseStep(0.01) // 1%
p.Reset()
progressBarCSS(p)
return p
}
// Reset resets the progress bar.
func (p *ProgressBar) Reset() {
p.new = 0
p.old = 0
p.total = 0
p.SetFraction(0)
p.RemoveCSSClass("failed")
if p.updater != 0 {
glib.SourceRemove(p.updater)
}
p.updater = glib.TimeoutAdd(1000/15, func() bool {
new := atomic.LoadInt64(&p.new)
if new == 0 {
// Don't update if no read yet.
return true
}
if total := atomic.LoadInt64(&p.total); total == 0 {
if new != p.old {
p.Pulse()
p.old = new
}
} else {
p.SetFraction(float64(new) / float64(total))
}
return true
})
}
// SetTotal sets the total number of bytes to upload. This method is safe to use
// concurrently.
func (p *ProgressBar) SetTotal(bytes int64) {
atomic.StoreInt64(&p.total, bytes)
}
// Read increments the bytes read. This method is safe to use concurrently.
func (p *ProgressBar) Read(bytes int64) {
atomic.AddInt64(&p.new, bytes)
}
// Done marks the progress bar as done. This method is safe to use concurrently.
func (p *ProgressBar) Done(err bool) {
glib.IdleAdd(func() {
if p.updater == 0 {
return
}
// Make sure only the first Done run counts.
glib.SourceRemove(p.updater)
p.updater = 0
if err {
p.AddCSSClass("failed")
p.SetText("Error")
}
p.SetFraction(1)
})
}
// Error sets an error.
func (p *ProgressBar) Error() {
if p.updater != 0 {
glib.SourceRemove(p.updater)
p.updater = 0
}
p.AddCSSClass("failed")
p.SetText("Error")
}
// progressReader wraps around a ProgressBar to increment it using the io.Reader
// API.
type progressReader struct {
b *ProgressBar
r io.ReadCloser
}
// WrapProgressReader wraps a ProgressBar to update it when the reader is read
// from.
func WrapProgressReader(b *ProgressBar, r io.ReadCloser) io.ReadCloser {
return progressReader{b, r}
}
func (p progressReader) Read(b []byte) (int, error) {
n, err := p.r.Read(b)
if err != nil {
p.b.Done(!errors.Is(err, io.EOF))
} else {
p.b.Read(int64(n))
}
return n, err
}
func (p progressReader) Close() error {
err := p.r.Close()
p.b.Done(err != nil)
return err
}
// WrapCloser wraps a reader around a closer.
func WrapCloser(r io.Reader, c io.Closer) io.ReadCloser {
return readCloser{
Reader: r,
Closer: c,
}
}
type readCloser struct {
io.Reader
io.Closer
}
const bufferSize = 1 << 15 // 32KB
// Upload wraps around a reader to peek for its MIME type.
func Upload(c *gotktrix.Client, r io.ReadCloser, name string) (matrix.URL, error) {
buf := bufio.NewReaderSize(r, bufferSize)
b, err := buf.Peek(512)
if err != nil {
return "", err
}
return c.MediaUpload(http.DetectContentType(b), name, WrapCloser(buf, r))
}