package display import ( "fmt" "io" "io/ioutil" "net/url" "os" "path" "path/filepath" "strconv" "strings" "time" "github.com/gdamore/tcell" "github.com/makeworld-the-better-one/amfora/config" "github.com/makeworld-the-better-one/amfora/structs" "github.com/makeworld-the-better-one/go-gemini" "github.com/makeworld-the-better-one/progressbar/v3" "github.com/spf13/viper" "gitlab.com/tslocum/cview" ) // For choosing between download and the portal - copy of YesNo basically var dlChoiceModal = cview.NewModal(). AddButtons([]string{"Download", "Open in portal", "Cancel"}) // Channel to indicate what choice they made using the button text var dlChoiceCh = make(chan string) var dlModal = cview.NewModal() func dlInit() { if viper.GetBool("a-general.color") { dlChoiceModal.SetButtonBackgroundColor(config.GetColor("btn_bg")). SetButtonTextColor(config.GetColor("btn_text")). SetBackgroundColor(config.GetColor("dl_choice_modal_bg")). SetTextColor(config.GetColor("dl_choice_modal_text")) dlChoiceModal.GetFrame(). SetBorderColor(config.GetColor("dl_choice_modal_text")). SetTitleColor(config.GetColor("dl_choice_modal_text")) dlModal.SetButtonBackgroundColor(config.GetColor("btn_bg")). SetButtonTextColor(config.GetColor("btn_text")). SetBackgroundColor(config.GetColor("dl_modal_bg")). SetTextColor(config.GetColor("dl_modal_text")) dlModal.GetFrame(). SetBorderColor(config.GetColor("dl_modal_text")). SetTitleColor(config.GetColor("dl_modal_text")) } else { dlChoiceModal.SetButtonBackgroundColor(tcell.ColorWhite). SetButtonTextColor(tcell.ColorBlack). SetBackgroundColor(tcell.ColorBlack). SetTextColor(tcell.ColorWhite) dlChoiceModal.SetBorderColor(tcell.ColorWhite) dlChoiceModal.GetFrame().SetTitleColor(tcell.ColorWhite) dlModal.SetButtonBackgroundColor(tcell.ColorWhite). SetButtonTextColor(tcell.ColorBlack). SetBackgroundColor(tcell.ColorBlack). SetTextColor(tcell.ColorWhite) dlModal.GetFrame(). SetBorderColor(tcell.ColorWhite). SetTitleColor(tcell.ColorWhite) } dlChoiceModal.SetBorder(true) dlChoiceModal.GetFrame().SetTitleAlign(cview.AlignCenter) dlChoiceModal.SetDoneFunc(func(buttonIndex int, buttonLabel string) { dlChoiceCh <- buttonLabel }) dlModal.SetBorder(true) dlModal.GetFrame(). SetTitleAlign(cview.AlignCenter). SetTitle(" Download ") dlModal.SetDoneFunc(func(buttonIndex int, buttonLabel string) { if buttonLabel == "Ok" { tabPages.SwitchToPage(strconv.Itoa(curTab)) App.SetFocus(tabs[curTab].view) App.Draw() } }) } // dlChoice displays the download choice modal and acts on the user's choice. // It should run in a goroutine. func dlChoice(text, u string, resp *gemini.Response) { defer resp.Body.Close() parsed, err := url.Parse(u) if err != nil { Error("URL Error", err.Error()) return } dlChoiceModal.SetText(text) tabPages.ShowPage("dlChoice") tabPages.SendToFront("dlChoice") App.SetFocus(dlChoiceModal) App.Draw() choice := <-dlChoiceCh if choice == "Download" { tabPages.HidePage("dlChoice") App.Draw() downloadURL(u, resp) return } if choice == "Open in portal" { // Open in mozz's proxy portalURL := u if parsed.RawQuery != "" { // Remove query and add encoded version on the end query := parsed.RawQuery parsed.RawQuery = "" portalURL = parsed.String() + "%3F" + query } portalURL = strings.TrimPrefix(portalURL, "gemini://") + "?raw=1" ok := handleHTTP("https://portal.mozz.us/gemini/"+portalURL, false) if ok { tabPages.SwitchToPage(strconv.Itoa(curTab)) App.SetFocus(tabs[curTab].view) App.Draw() } return } tabPages.SwitchToPage(strconv.Itoa(curTab)) App.SetFocus(tabs[curTab].view) App.Draw() } // downloadURL pulls up a modal to show download progress and saves the URL content. // downloadPage should be used for Page content. func downloadURL(u string, resp *gemini.Response) { _, _, width, _ := dlModal.GetInnerRect() // Copy of progressbar.DefaultBytesSilent with custom width bar := progressbar.NewOptions64( -1, progressbar.OptionSetWidth(width), progressbar.OptionSetWriter(ioutil.Discard), progressbar.OptionShowBytes(true), progressbar.OptionThrottle(65*time.Millisecond), progressbar.OptionShowCount(), progressbar.OptionSpinnerType(14), ) bar.RenderBlank() //nolint:errcheck savePath, err := downloadNameFromURL(u, "") if err != nil { Error("Download Error", "Error deciding on file name: "+err.Error()) return } f, err := os.OpenFile(savePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644) if err != nil { Error("Download Error", "Error creating download file: "+err.Error()) return } defer f.Close() done := false go func(isDone *bool) { // Update the bar display for !*isDone { dlModal.SetText(bar.String()) App.Draw() time.Sleep(100 * time.Millisecond) } }(&done) // Display dlModal.ClearButtons() dlModal.AddButtons([]string{"Downloading..."}) tabPages.ShowPage("dl") tabPages.SendToFront("dl") App.SetFocus(dlModal) App.Draw() _, err = io.Copy(io.MultiWriter(f, bar), resp.Body) done = true if err != nil { tabPages.HidePage("dl") Error("Download Error", err.Error()) f.Close() os.Remove(savePath) // Remove partial file return } dlModal.SetText(fmt.Sprintf("Download complete! File saved to %s.", savePath)) dlModal.ClearButtons() dlModal.AddButtons([]string{"Ok"}) dlModal.GetForm().SetFocus(100) App.SetFocus(dlModal) App.Draw() } // downloadPage saves the passed Page to a file. // It returns the saved path and an error. // It always cleans up, so if an error is returned there is no file saved func downloadPage(p *structs.Page) (string, error) { var savePath string var err error if p.Mediatype == structs.TextGemini { savePath, err = downloadNameFromURL(p.URL, ".gmi") } else { savePath, err = downloadNameFromURL(p.URL, ".txt") } if err != nil { return "", err } err = ioutil.WriteFile(savePath, []byte(p.Raw), 0644) if err != nil { // Just in case os.Remove(savePath) return "", err } return savePath, err } // downloadNameFromURL takes a URl and returns a safe download path that will not overwrite any existing file. // ext is an extension that will be added if the file has no extension, and for domain only URLs. // It should include the dot. func downloadNameFromURL(u string, ext string) (string, error) { var name string var err error parsed, _ := url.Parse(u) if parsed.Path == "" || path.Base(parsed.Path) == "/" { // No file, just the root domain name, err = getSafeDownloadName(parsed.Hostname()+ext, true, 0) if err != nil { return "", err } } else { // There's a specific file name = path.Base(parsed.Path) if !strings.Contains(name, ".") { // No extension name += ext } name, err = getSafeDownloadName(name, false, 0) if err != nil { return "", err } } return filepath.Join(config.DownloadsDir, name), nil } // getSafeDownloadName is used by downloads.go only. // It returns a modified name that is unique for the downloads folder. // This way duplicate saved files will not overwrite each other. // // lastDot should be set to true if the number added to the name should come before // the last dot in the filename instead of the first. // // n should be set to 0, it is used for recursiveness. func getSafeDownloadName(name string, lastDot bool, n int) (string, error) { // newName("test.txt", 3) -> "test(3).txt" newName := func() string { if n <= 0 { return name } if lastDot { ext := filepath.Ext(name) return strings.TrimSuffix(name, ext) + "(" + strconv.Itoa(n) + ")" + ext } idx := strings.Index(name, ".") if idx == -1 { return name + "(" + strconv.Itoa(n) + ")" } return name[:idx] + "(" + strconv.Itoa(n) + ")" + name[idx:] } d, err := os.Open(config.DownloadsDir) if err != nil { return "", err } files, err := d.Readdirnames(-1) if err != nil { d.Close() return "", err } nn := newName() for i := range files { if nn == files[i] { d.Close() return getSafeDownloadName(name, lastDot, n+1) } } d.Close() return nn, nil // Name doesn't exist already }