first commit

main.go

@@ -0,0 +1,213 @@
+package main
+
+// A simple program demonstrating the textarea component from the Bubbles
+// component library.
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"charm.land/bubbles/v2/textarea"
+	tea "charm.land/bubbletea/v2"
+	"charm.land/lipgloss/v2"
+)
+
+func main() {
+	p := tea.NewProgram(initialModel())
+
+	if _, err := p.Run(); err != nil {
+		log.Fatal(err)
+	}
+}
+
+type transientMsg struct {
+	msg   string
+	until time.Time
+}
+
+type WriteSeekCloser interface {
+	io.WriteSeeker
+	io.Closer
+}
+
+type model struct {
+	textarea      textarea.Model
+	fh            WriteSeekCloser
+	title         string
+	transientMsgs []transientMsg
+}
+
+func getWriter() (WriteSeekCloser, error) {
+	hd, err := os.UserHomeDir()
+	if err != nil {
+		return nil, err
+	}
+
+	fp := filepath.Join(hd, "journal")
+	fpS, err := os.Stat(fp)
+	if err != nil {
+		return nil, err
+	}
+	if !fpS.IsDir() {
+		return nil, fmt.Errorf("fp: %s is not a dir", fp)
+	}
+
+	fn := fmt.Sprintf("journal-%s", time.Now().Format("2006-01-02_150405.md"))
+
+	file, err := os.Create(filepath.Join(fp, fn))
+	if err != nil {
+		return nil, err
+	}
+	return file, nil
+}
+
+func initialModel() model {
+	ti := textarea.New()
+	ti.Placeholder = "What's happening Peter ..."
+	ti.SetVirtualCursor(false)
+	ti.SetStyles(textarea.DefaultStyles(true)) // default to dark styles.
+	ti.Focus()
+	ti.SetHeight(20)
+	ti.SetWidth(80)
+
+	fh, err := getWriter()
+	if err != nil {
+		panic(err)
+	}
+	return model{
+		title:    time.Now().Format("2006-01-02 15:04"),
+		textarea: ti,
+		fh:       fh,
+	}
+}
+
+func (m model) Init() tea.Cmd {
+	return tea.Batch(textarea.Blink, tea.RequestBackgroundColor)
+}
+
+func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	var cmds []tea.Cmd
+	var cmd tea.Cmd
+
+	// clean out transient msgs
+	newMsgs := []transientMsg{}
+	for _, message := range m.transientMsgs {
+		if message.until.After(time.Now()) {
+			newMsgs = append(newMsgs, message)
+		}
+	}
+
+	m.transientMsgs = newMsgs
+
+	switch msg := msg.(type) {
+	case tea.BackgroundColorMsg:
+		// Update styling now that we know the background color.
+		m.textarea.SetStyles(textarea.DefaultStyles(msg.IsDark()))
+	case tea.KeyPressMsg:
+		switch msg.String() {
+		case "super+s", "ctrl+s":
+			var err error
+			err = m.writeFile()
+			m.transientMsgs = append(m.transientMsgs, transientMsg{
+				msg:   "saved",
+				until: time.Now().Add(time.Second * 2),
+			})
+			if err != nil {
+				m.transientMsgs = append(m.transientMsgs, transientMsg{
+					msg:   "saved",
+					until: time.Now().Add(time.Second * 2),
+				})
+				panic(err)
+			}
+		case "esc":
+			if m.textarea.Focused() {
+				m.textarea.Blur()
+			}
+		case "ctrl+c":
+			var err error
+			err = m.writeFile()
+			if err == nil {
+				err = m.fh.Close()
+			}
+			if err == nil {
+				return m, tea.Quit
+			} else {
+				panic(err)
+			}
+		default:
+			if !m.textarea.Focused() {
+				cmd = m.textarea.Focus()
+				cmds = append(cmds, cmd)
+			}
+		}
+
+		// We handle errors just like any other message
+		// case errMsg:
+		// 	m.err = msg
+		// 	return m, nil
+	}
+
+	m.textarea, cmd = m.textarea.Update(msg)
+	cmds = append(cmds, cmd)
+	return m, tea.Batch(cmds...)
+}
+
+func (m model) headerView() string {
+	return m.title + "\n"
+}
+
+func (m model) writeFile() error {
+	_, err := m.fh.Seek(0, io.SeekStart)
+	if err != nil {
+		return fmt.Errorf("seek: %w", err)
+	}
+
+	m.fh.Write([]byte("# " + m.title + "\n\n"))
+
+	_, err = m.fh.Write([]byte(m.textarea.Value()))
+	if err != nil {
+		return fmt.Errorf("write: %w", err)
+	}
+	return nil
+}
+
+func (m model) View() tea.View {
+	footer1 := "(ctrl+c to quit)"
+	footer2 := ""
+
+	for _, message := range m.transientMsgs {
+		footer2 += message.msg + ", "
+	}
+	footer2 = strings.TrimRight(footer2, ", ")
+	if len(footer2) > m.textarea.Width() {
+		footer2 = footer2[:m.textarea.Width()]
+	}
+
+	var c *tea.Cursor
+	if !m.textarea.VirtualCursor() {
+		c = m.textarea.Cursor()
+
+		if c != nil {
+			// Set the y offset of the cursor based on the position of the textarea
+			// in the application.
+			offset := lipgloss.Height(m.headerView())
+			c.Y += offset
+		}
+	}
+
+	f := strings.Join([]string{
+		m.headerView(),
+		m.textarea.View(),
+		footer1,
+		footer2,
+	}, "\n")
+
+	v := tea.NewView(f)
+	v.Cursor = c
+	return v
+}