133 lines
2.9 KiB
Go
133 lines
2.9 KiB
Go
package backend_golang
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import (
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"path/filepath"
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"time"
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"github.com/cavaliergopher/grab/v3"
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"github.com/wailsapp/wails/v2/pkg/runtime"
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)
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func (a *App) DownloadFile(path string, url string) error {
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_, err := grab.Get(path, url)
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if err != nil {
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return err
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}
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return nil
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}
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type DownloadStatus struct {
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resp *grab.Response
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Name string `json:"name"`
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Path string `json:"path"`
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Url string `json:"url"`
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Transferred int64 `json:"transferred"`
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Size int64 `json:"size"`
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Speed float64 `json:"speed"`
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Progress float64 `json:"progress"`
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Downloading bool `json:"downloading"`
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Done bool `json:"done"`
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}
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var downloadList []DownloadStatus
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func existsInDownloadList(url string) bool {
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for _, ds := range downloadList {
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if ds.Url == url {
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return true
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}
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}
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return false
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}
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func (a *App) PauseDownload(url string) {
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for i, ds := range downloadList {
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if ds.Url == url {
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ds.resp.Cancel()
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downloadList[i] = DownloadStatus{
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resp: ds.resp,
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Name: ds.Name,
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Path: ds.Path,
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Url: ds.Url,
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Transferred: ds.Transferred,
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Size: ds.Size,
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Speed: 0,
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Progress: ds.Progress,
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Downloading: false,
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Done: ds.Done,
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}
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}
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}
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}
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func (a *App) ContinueDownload(url string) {
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for i, ds := range downloadList {
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if ds.Url == url {
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client := grab.NewClient()
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req, _ := grab.NewRequest(ds.Path, ds.Url)
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resp := client.Do(req)
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downloadList[i] = DownloadStatus{
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resp: resp,
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Name: ds.Name,
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Path: ds.Path,
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Url: ds.Url,
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Transferred: ds.Transferred,
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Size: ds.Size,
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Speed: ds.Speed,
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Progress: ds.Progress,
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Downloading: true,
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Done: ds.Done,
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}
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}
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}
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}
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func (a *App) AddToDownloadList(path string, url string) {
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if !existsInDownloadList(url) {
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client := grab.NewClient()
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req, _ := grab.NewRequest(path, url)
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resp := client.Do(req)
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downloadList = append(downloadList, DownloadStatus{
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resp: resp,
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Name: filepath.Base(path),
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Path: path,
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Url: url,
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Transferred: 0,
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Size: 0,
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Speed: 0,
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Progress: 0,
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Downloading: true,
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Done: false,
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})
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} else {
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a.ContinueDownload(url)
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}
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}
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func (a *App) downloadLoop() {
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ticker := time.NewTicker(500 * time.Millisecond)
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go func() {
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for {
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<-ticker.C
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for i, ds := range downloadList {
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downloadList[i] = DownloadStatus{
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resp: ds.resp,
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Name: ds.Name,
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Path: ds.Path,
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Url: ds.Url,
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Transferred: ds.resp.BytesComplete(),
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Size: ds.resp.Size(),
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Speed: ds.resp.BytesPerSecond(),
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Progress: 100 * ds.resp.Progress(),
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Downloading: !ds.resp.IsComplete(),
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Done: ds.resp.Progress() == 1,
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}
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}
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runtime.EventsEmit(a.ctx, "downloadList", downloadList)
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}
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}()
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}
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