116 lines
2.9 KiB
Go
116 lines
2.9 KiB
Go
package ui
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import (
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"fmt"
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"strings"
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gemlog "git.travisshears.com/travisshears/gemlog-cli/gemlog"
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"github.com/charmbracelet/bubbles/viewport"
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tea "github.com/charmbracelet/bubbletea"
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"github.com/charmbracelet/lipgloss"
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"github.com/muesli/reflow/wordwrap"
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)
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type EntryPageModel struct {
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entry gemlog.GemlogEntry
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ready bool
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viewport viewport.Model
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}
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func initialEntryPageModel() EntryPageModel {
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return EntryPageModel{}
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}
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func wrapGemtxt(gemtxt string, width int) string {
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return wordwrap.String(gemtxt, width)
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}
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func (m EntryPageModel) Update(msg tea.Msg, active bool, ctx *context) (EntryPageModel, tea.Cmd) {
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var (
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cmd tea.Cmd
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cmds []tea.Cmd
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)
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switch msg := msg.(type) {
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case GemLogLoaded:
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m.entry = msg.Log
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m.viewport.SetContent(wrapGemtxt(m.entry.Gemtxt, m.viewport.Width))
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case tea.KeyMsg:
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if !active {
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return m, nil
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}
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switch msg.String() {
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case "left", "h":
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cmd := func() tea.Msg {
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return SwitchPages{Page: EntryList}
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}
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return m, cmd
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}
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case tea.WindowSizeMsg:
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headerHeight := lipgloss.Height(m.headerView("loading slug..."))
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footerHeight := lipgloss.Height(m.footerView())
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verticalMarginHeight := headerHeight + footerHeight
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if !m.ready {
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// Since this program is using the full size of the viewport we
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// need to wait until we've received the window dimensions before
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// we can initialize the viewport. The initial dimensions come in
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// quickly, though asynchronously, which is why we wait for them
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// here.
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m.viewport = viewport.New(msg.Width, msg.Height-verticalMarginHeight)
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m.viewport.YPosition = headerHeight
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m.viewport.SetContent(wrapGemtxt(m.entry.Gemtxt, msg.Width))
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m.ready = true
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} else {
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m.viewport.Width = msg.Width
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m.viewport.Height = msg.Height - verticalMarginHeight
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}
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}
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// Handle keyboard and mouse events in the viewport
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m.viewport, cmd = m.viewport.Update(msg)
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cmds = append(cmds, cmd)
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return m, tea.Batch(cmds...)
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}
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func (m EntryPageModel) View() string {
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if !m.ready {
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return "\n Initializing..."
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}
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return fmt.Sprintf("%s\n%s\n%s", m.headerView(m.entry.Slug), m.viewport.View(), m.footerView())
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}
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var (
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titleStyle = func() lipgloss.Style {
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b := lipgloss.RoundedBorder()
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b.Right = "├"
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return lipgloss.NewStyle().BorderStyle(b).Padding(0, 1)
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}()
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infoStyle = func() lipgloss.Style {
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b := lipgloss.RoundedBorder()
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b.Left = "┤"
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return titleStyle.BorderStyle(b)
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}()
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)
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func (m EntryPageModel) headerView(slug string) string {
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title := titleStyle.Render(slug)
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line := strings.Repeat("─", max(0, m.viewport.Width-lipgloss.Width(title)))
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return lipgloss.JoinHorizontal(lipgloss.Center, title, line)
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}
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func (m EntryPageModel) footerView() string {
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info := infoStyle.Render(fmt.Sprintf("%3.f%%", m.viewport.ScrollPercent()*100))
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line := strings.Repeat("─", max(0, m.viewport.Width-lipgloss.Width(info)))
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return lipgloss.JoinHorizontal(lipgloss.Center, line, info)
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}
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func max(a, b int) int {
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if a > b {
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return a
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}
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return b
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}
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