remove file downloads

internal/page/scrollerPage.go

@@ -2,11 +2,7 @@ package page
 
 import (
 	"fmt"
-	"io"
 	"math"
-	"net/http"
-	"os"
-	"path/filepath"
 	"strings"
 
 	"github.com/go-gl/gl/v3.3-core/gl"
@@ -27,29 +23,6 @@ const (
 	// defaultProclamationPlayCount int    = 1
 )
 
-// ProgressUpdate is sent over a channel as bytes are read from the network
-// during a download. Read/Total let a consumer compute percentage; Done
-// signals a clean finish; Err signals failure. The channel carrying these
-// is closed after the final update (whether that's a Done or an Err), so
-// ranging over it is sufficient to know when the download has finished.
-type ProgressUpdate struct {
-	Read  int64
-	Total int64
-	Done  bool
-	Err   error
-}
-
-// ProgressReader wraps an io.Reader and emits a ProgressUpdate on every
-// Read() call. It never blocks on the send: if nobody is currently
-// listening on updates (or the consumer is behind), the update is dropped
-// rather than stalling the download itself.
-type ProgressReader struct {
-	Reader  io.Reader
-	Total   int64
-	read    int64
-	updates chan<- ProgressUpdate
-}
-
 type ScrollerPage struct {
 	Base
 
@@ -91,64 +64,6 @@ type ScrollerPage struct {
 	useColorPalettes bool
 }
 
-func (pr *ProgressReader) Read(p []byte) (int, error) {
-	n, err := pr.Reader.Read(p)
-	if n > 0 {
-		pr.read += int64(n)
-		select {
-		case pr.updates <- ProgressUpdate{Read: pr.read, Total: pr.Total}:
-		default:
-		}
-	}
-	return n, err
-}
-
-// downloadFile starts the download in its own goroutine and returns
-// immediately with a channel of progress updates. The caller ranges over
-// the returned channel to observe progress; the channel is closed when the
-// download finishes, successfully or not, so the loop ends naturally.
-func downloadFile(url, destPath string) <-chan ProgressUpdate {
-	updates := make(chan ProgressUpdate, 16)
-
-	go func() {
-		defer close(updates)
-
-		resp, err := http.Get(url)
-		if err != nil {
-			updates <- ProgressUpdate{Err: err}
-			return
-		}
-		defer resp.Body.Close()
-
-		if resp.StatusCode != http.StatusOK {
-			updates <- ProgressUpdate{Err: fmt.Errorf("bad status: %s", resp.Status)}
-			return
-		}
-
-		out, err := os.Create(destPath)
-		if err != nil {
-			updates <- ProgressUpdate{Err: err}
-			return
-		}
-		defer out.Close()
-
-		pr := &ProgressReader{
-			Reader:  resp.Body,
-			Total:   resp.ContentLength, // -1 if server didn't send it
-			updates: updates,
-		}
-
-		if _, err := io.Copy(out, pr); err != nil {
-			updates <- ProgressUpdate{Err: err}
-			return
-		}
-
-		updates <- ProgressUpdate{Read: pr.read, Total: pr.Total, Done: true}
-	}()
-
-	return updates
-}
-
 type ScrollerProclamation struct {
 	db.Proclamation
 	colorPattern.ColorPattern
@@ -351,33 +266,6 @@ func (p *ScrollerPage) Init(ctx *PageCtx) error {
 
 	if err := p.Context.DbPtr.Where("Selected = ?", true).First(&selectedAudio).Error; err != nil {
 		logger.Error("error querying database for selected audio: %v", err)
-	} else {
-		_, err = os.Stat(selectedAudio.Path)
-		if err != nil { // If err == nil, then the file was most likely not found
-			url := "https://files.radiantwavetech.com/audio/" + filepath.Base(selectedAudio.Path)
-			p.IsDownloadingAudio = true
-			updates := downloadFile(url, selectedAudio.Path)
-			var downloadErr error
-			for u := range updates {
-				if u.Err != nil {
-					downloadErr = u.Err
-					break
-				}
-				if u.Total > 0 {
-					pct := float64(u.Read) / float64(u.Total) * 100
-					fmt.Printf("\rDownloaded %d / %d bytes (%.1f%%)\n", u.Read, u.Total, pct)
-				} else {
-					fmt.Printf("\rDownloaded %d bytes\n", u.Read)
-				}
-				if u.Done {
-					fmt.Println()
-				}
-			}
-			if downloadErr != nil {
-				p.IsDownloadingAudio = false
-				return fmt.Errorf("failed to downoad audio file: %v", downloadErr)
-			}
-		}
 	}
 
 	logger.Info("Playing %s", selectedAudio.Path)