package termui import ( "bytes" "fmt" "strings" "github.com/MichaelMure/go-term-text" "github.com/awesome-gocui/gocui" "github.com/MichaelMure/git-bug/bug" "github.com/MichaelMure/git-bug/cache" "github.com/MichaelMure/git-bug/entity" "github.com/MichaelMure/git-bug/util/colors" ) const showBugView = "showBugView" const showBugSidebarView = "showBugSidebarView" const showBugInstructionView = "showBugInstructionView" const showBugHeaderView = "showBugHeaderView" const timeLayout = "Jan 2 2006" type showBug struct { cache *cache.RepoCache bug *cache.BugCache childViews []string mainSelectableView []string sideSelectableView []string selected string isOnSide bool scroll int } func newShowBug(cache *cache.RepoCache) *showBug { return &showBug{ cache: cache, } } func (sb *showBug) SetBug(bug *cache.BugCache) { sb.bug = bug sb.scroll = 0 sb.selected = "" sb.isOnSide = false } func (sb *showBug) layout(g *gocui.Gui) error { maxX, maxY := g.Size() sb.childViews = nil v, err := g.SetView(showBugView, 0, 0, maxX*2/3, maxY-2, 0) if err != nil { if !gocui.IsUnknownView(err) { return err } sb.childViews = append(sb.childViews, showBugView) v.Frame = false } v.Clear() err = sb.renderMain(g, v) if err != nil { return err } v, err = g.SetView(showBugSidebarView, maxX*2/3+1, 0, maxX-1, maxY-2, 0) if err != nil { if !gocui.IsUnknownView(err) { return err } sb.childViews = append(sb.childViews, showBugSidebarView) v.Frame = false } v.Clear() err = sb.renderSidebar(g, v) if err != nil { return err } v, err = g.SetView(showBugInstructionView, -1, maxY-2, maxX, maxY, 0) if err != nil { if !gocui.IsUnknownView(err) { return err } sb.childViews = append(sb.childViews, showBugInstructionView) v.Frame = false v.BgColor = gocui.ColorBlue } v.Clear() _, _ = fmt.Fprintf(v, "[q] Save and return [←↓↑→,hjkl] Navigation [o] Toggle open/close [e] Edit [c] Comment [t] Change title") _, err = g.SetViewOnTop(showBugInstructionView) if err != nil { return err } _, err = g.SetCurrentView(showBugView) return err } func (sb *showBug) keybindings(g *gocui.Gui) error { // Return if err := g.SetKeybinding(showBugView, 'q', gocui.ModNone, sb.saveAndBack); err != nil { return err } // Scrolling if err := g.SetKeybinding(showBugView, gocui.KeyPgup, gocui.ModNone, sb.scrollUp); err != nil { return err } if err := g.SetKeybinding(showBugView, gocui.KeyPgdn, gocui.ModNone, sb.scrollDown); err != nil { return err } // Down if err := g.SetKeybinding(showBugView, 'j', gocui.ModNone, sb.selectNext); err != nil { return err } if err := g.SetKeybinding(showBugView, gocui.KeyArrowDown, gocui.ModNone, sb.selectNext); err != nil { return err } // Up if err := g.SetKeybinding(showBugView, 'k', gocui.ModNone, sb.selectPrevious); err != nil { return err } if err := g.SetKeybinding(showBugView, gocui.KeyArrowUp, gocui.ModNone, sb.selectPrevious); err != nil { return err } // Left if err := g.SetKeybinding(showBugView, 'h', gocui.ModNone, sb.left); err != nil { return err } if err := g.SetKeybinding(showBugView, gocui.KeyArrowLeft, gocui.ModNone, sb.left); err != nil { return err } // Right if err := g.SetKeybinding(showBugView, 'l', gocui.ModNone, sb.right); err != nil { return err } if err := g.SetKeybinding(showBugView, gocui.KeyArrowRight, gocui.ModNone, sb.right); err != nil { return err } // Comment if err := g.SetKeybinding(showBugView, 'c', gocui.ModNone, sb.comment); err != nil { return err } // Open/close if err := g.SetKeybinding(showBugView, 'o', gocui.ModNone, sb.toggleOpenClose); err != nil { return err } // Title if err := g.SetKeybinding(showBugView, 't', gocui.ModNone, sb.setTitle); err != nil { return err } // Edit if err := g.SetKeybinding(showBugView, 'e', gocui.ModNone, sb.edit); err != nil { return err } return nil } func (sb *showBug) disable(g *gocui.Gui) error { for _, view := range sb.childViews { if err := g.DeleteView(view); err != nil && !gocui.IsUnknownView(err) { return err } } return nil } func (sb *showBug) renderMain(g *gocui.Gui, mainView *gocui.View) error { maxX, _ := mainView.Size() x0, y0, _, _, _ := g.ViewPosition(mainView.Name()) y0 -= sb.scroll snap := sb.bug.Snapshot() sb.mainSelectableView = nil createTimelineItem := snap.Timeline[0].(*bug.CreateTimelineItem) edited := "" if createTimelineItem.Edited() { edited = " (edited)" } bugHeader := fmt.Sprintf("[%s] %s\n\n[%s] %s opened this bug on %s%s", colors.Cyan(snap.Id().Human()), colors.Bold(snap.Title), colors.Yellow(snap.Status), colors.Magenta(snap.Author.DisplayName()), snap.CreatedAt.Format(timeLayout), edited, ) bugHeader, lines := text.Wrap(bugHeader, maxX) v, err := sb.createOpView(g, showBugHeaderView, x0, y0, maxX+1, lines, false) if err != nil { return err } _, _ = fmt.Fprint(v, bugHeader) y0 += lines + 1 for _, op := range snap.Timeline { viewName := op.Id().String() // TODO: me might skip the rendering of blocks that are outside of the view // but to do that we need to rework how sb.mainSelectableView is maintained switch op.(type) { case *bug.CreateTimelineItem: create := op.(*bug.CreateTimelineItem) var content string var lines int if create.MessageIsEmpty() { content, lines = text.WrapLeftPadded(emptyMessagePlaceholder(), maxX-1, 4) } else { content, lines = text.WrapLeftPadded(create.Message, maxX-1, 4) } v, err := sb.createOpView(g, viewName, x0, y0, maxX+1, lines, true) if err != nil { return err } _, _ = fmt.Fprint(v, content) y0 += lines + 2 case *bug.AddCommentTimelineItem: comment := op.(*bug.AddCommentTimelineItem) edited := "" if comment.Edited() { edited = " (edited)" } var message string if comment.MessageIsEmpty() { message, _ = text.WrapLeftPadded(emptyMessagePlaceholder(), maxX-1, 4) } else { message, _ = text.WrapLeftPadded(comment.Message, maxX-1, 4) } content := fmt.Sprintf("%s commented on %s%s\n\n%s", colors.Magenta(comment.Author.DisplayName()), comment.CreatedAt.Time().Format(timeLayout), edited, message, ) content, lines = text.Wrap(content, maxX) v, err := sb.createOpView(g, viewName, x0, y0, maxX+1, lines, true) if err != nil { return err } _, _ = fmt.Fprint(v, content) y0 += lines + 2 case *bug.SetTitleTimelineItem: setTitle := op.(*bug.SetTitleTimelineItem) content := fmt.Sprintf("%s changed the title to %s on %s", colors.Magenta(setTitle.Author.DisplayName()), colors.Bold(setTitle.Title), setTitle.UnixTime.Time().Format(timeLayout), ) content, lines := text.Wrap(content, maxX) v, err := sb.createOpView(g, viewName, x0, y0, maxX+1, lines, true) if err != nil { return err } _, _ = fmt.Fprint(v, content) y0 += lines + 2 case *bug.SetStatusTimelineItem: setStatus := op.(*bug.SetStatusTimelineItem) content := fmt.Sprintf("%s %s the bug on %s", colors.Magenta(setStatus.Author.DisplayName()), colors.Bold(setStatus.Status.Action()), setStatus.UnixTime.Time().Format(timeLayout), ) content, lines := text.Wrap(content, maxX) v, err := sb.createOpView(g, viewName, x0, y0, maxX+1, lines, true) if err != nil { return err } _, _ = fmt.Fprint(v, content) y0 += lines + 2 case *bug.LabelChangeTimelineItem: labelChange := op.(*bug.LabelChangeTimelineItem) var added []string for _, label := range labelChange.Added { added = append(added, colors.Bold("\""+label+"\"")) } var removed []string for _, label := range labelChange.Removed { removed = append(removed, colors.Bold("\""+label+"\"")) } var action bytes.Buffer if len(added) > 0 { action.WriteString("added ") action.WriteString(strings.Join(added, ", ")) if len(removed) > 0 { action.WriteString(" and ") } } if len(removed) > 0 { action.WriteString("removed ") action.WriteString(strings.Join(removed, ", ")) } if len(added)+len(removed) > 1 { action.WriteString(" labels") } else { action.WriteString(" label") } content := fmt.Sprintf("%s %s on %s", colors.Magenta(labelChange.Author.DisplayName()), action.String(), labelChange.UnixTime.Time().Format(timeLayout), ) content, lines := text.Wrap(content, maxX) v, err := sb.createOpView(g, viewName, x0, y0, maxX+1, lines, true) if err != nil { return err } _, _ = fmt.Fprint(v, content) y0 += lines + 2 } } return nil } // emptyMessagePlaceholder return a formatted placeholder for an empty message func emptyMessagePlaceholder() string { return colors.GreyBold("No description provided.") } func (sb *showBug) createOpView(g *gocui.Gui, name string, x0 int, y0 int, maxX int, height int, selectable bool) (*gocui.View, error) { v, err := g.SetView(name, x0, y0, maxX, y0+height+1, 0) if err != nil && !gocui.IsUnknownView(err) { return nil, err } sb.childViews = append(sb.childViews, name) if selectable { sb.mainSelectableView = append(sb.mainSelectableView, name) } v.Frame = sb.selected == name v.Clear() return v, nil } func (sb *showBug) createSideView(g *gocui.Gui, name string, x0 int, y0 int, maxX int, height int) (*gocui.View, error) { v, err := g.SetView(name, x0, y0, maxX, y0+height+1, 0) if err != nil && !gocui.IsUnknownView(err) { return nil, err } sb.childViews = append(sb.childViews, name) sb.sideSelectableView = append(sb.sideSelectableView, name) v.Frame = sb.selected == name v.Clear() return v, nil } func (sb *showBug) renderSidebar(g *gocui.Gui, sideView *gocui.View) error { maxX, _ := sideView.Size() x0, y0, _, _, _ := g.ViewPosition(sideView.Name()) maxX += x0 snap := sb.bug.Snapshot() sb.sideSelectableView = nil labelStr := make([]string, len(snap.Labels)) for i, l := range snap.Labels { lc := l.Color() lc256 := lc.Term256() labelStr[i] = lc256.Escape() + "◼ " + lc256.Unescape() + l.String() } labels := strings.Join(labelStr, "\n") labels, lines := text.WrapLeftPadded(labels, maxX, 2) content := fmt.Sprintf("%s\n\n%s", colors.Bold(" Labels"), labels) v, err := sb.createSideView(g, "sideLabels", x0, y0, maxX, lines+2) if err != nil { return err } _, _ = fmt.Fprint(v, content) return nil } func (sb *showBug) saveAndBack(g *gocui.Gui, v *gocui.View) error { err := sb.bug.CommitAsNeeded() if err != nil { return err } err = ui.activateWindow(ui.bugTable) if err != nil { return err } return nil } func (sb *showBug) scrollUp(g *gocui.Gui, v *gocui.View) error { mainView, err := g.View(showBugView) if err != nil { return err } _, maxY := mainView.Size() sb.scroll -= maxY / 2 sb.scroll = maxInt(sb.scroll, 0) return nil } func (sb *showBug) scrollDown(g *gocui.Gui, v *gocui.View) error { _, maxY := v.Size() lastViewName := sb.mainSelectableView[len(sb.mainSelectableView)-1] lastView, err := g.View(lastViewName) if err != nil { return err } _, vMaxY := lastView.Size() _, vy0, _, _, err := g.ViewPosition(lastViewName) if err != nil { return err } maxScroll := vy0 + sb.scroll + vMaxY - maxY sb.scroll += maxY / 2 sb.scroll = minInt(sb.scroll, maxScroll) return nil } func (sb *showBug) selectPrevious(g *gocui.Gui, v *gocui.View) error { var selectable []string if sb.isOnSide { selectable = sb.sideSelectableView } else { selectable = sb.mainSelectableView } for i, name := range selectable { if name == sb.selected { // special case to scroll up to the top if i == 0 { sb.scroll = 0 } sb.selected = selectable[maxInt(i-1, 0)] return sb.focusView(g) } } if sb.selected == "" && len(selectable) > 0 { sb.selected = selectable[0] } return sb.focusView(g) } func (sb *showBug) selectNext(g *gocui.Gui, v *gocui.View) error { var selectable []string if sb.isOnSide { selectable = sb.sideSelectableView } else { selectable = sb.mainSelectableView } for i, name := range selectable { if name == sb.selected { sb.selected = selectable[minInt(i+1, len(selectable)-1)] return sb.focusView(g) } } if sb.selected == "" && len(selectable) > 0 { sb.selected = selectable[0] } return sb.focusView(g) } func (sb *showBug) left(g *gocui.Gui, v *gocui.View) error { if sb.isOnSide { sb.isOnSide = false sb.selected = "" return sb.selectNext(g, v) } if sb.selected == "" { return sb.selectNext(g, v) } return nil } func (sb *showBug) right(g *gocui.Gui, v *gocui.View) error { if !sb.isOnSide { sb.isOnSide = true sb.selected = "" return sb.selectNext(g, v) } if sb.selected == "" { return sb.selectNext(g, v) } return nil } func (sb *showBug) focusView(g *gocui.Gui) error { mainView, err := g.View(showBugView) if err != nil { return err } _, maxY := mainView.Size() _, vy0, _, _, err := g.ViewPosition(sb.selected) if err != nil { return err } v, err := g.View(sb.selected) if err != nil { return err } _, vMaxY := v.Size() vy1 := vy0 + vMaxY if vy0 < 0 { sb.scroll += vy0 return nil } if vy1 > maxY { sb.scroll -= maxY - vy1 } return nil } func (sb *showBug) comment(g *gocui.Gui, v *gocui.View) error { return addCommentWithEditor(sb.bug) } func (sb *showBug) setTitle(g *gocui.Gui, v *gocui.View) error { return setTitleWithEditor(sb.bug) } func (sb *showBug) toggleOpenClose(g *gocui.Gui, v *gocui.View) error { switch sb.bug.Snapshot().Status { case bug.OpenStatus: _, err := sb.bug.Close() return err case bug.ClosedStatus: _, err := sb.bug.Open() return err default: return nil } } func (sb *showBug) edit(g *gocui.Gui, v *gocui.View) error { snap := sb.bug.Snapshot() if sb.isOnSide { return sb.editLabels(g, snap) } if sb.selected == "" { return nil } op, err := snap.SearchTimelineItem(entity.Id(sb.selected)) if err != nil { return err } switch op.(type) { case *bug.AddCommentTimelineItem: message := op.(*bug.AddCommentTimelineItem).Message return editCommentWithEditor(sb.bug, op.Id(), message) case *bug.CreateTimelineItem: preMessage := op.(*bug.CreateTimelineItem).Message return editCommentWithEditor(sb.bug, op.Id(), preMessage) case *bug.LabelChangeTimelineItem: return sb.editLabels(g, snap) } ui.msgPopup.Activate(msgPopupErrorTitle, "Selected field is not editable.") return nil } func (sb *showBug) editLabels(g *gocui.Gui, snap *bug.Snapshot) error { ui.labelSelect.SetBug(sb.cache, sb.bug) return ui.activateWindow(ui.labelSelect) }