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