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package main
import (
"database/sql"
"errors"
"fmt"
"html"
"net/http"
"regexp"
"strings"
"github.com/charmbracelet/bubbles/key"
"github.com/charmbracelet/bubbles/textinput"
"github.com/charmbracelet/bubbles/viewport"
tea "github.com/charmbracelet/bubbletea"
"github.com/microcosm-cc/bluemonday"
"github.com/muesli/reflow/wordwrap"
)
type model struct {
wordInput textinput.Model
err error
currentWord string
currentDefinition string
db *sql.DB
c *http.Client
wordAddStatus string
p bluemonday.Policy
vp viewport.Model
ankiDeck string
ankiModel string
apiURL string
}
type (
errMsg error
definitionMsg string
wordAddedMsg string
)
func initialModel(c *http.Client, db *sql.DB, apiURL, ankiDeck, ankiModel, firstWord string) model {
ti := textinput.New()
ti.Placeholder = ""
ti.Focus()
ti.CharLimit = 156
ti.Width = 36
vp := viewport.New(80, 30)
vp.KeyMap = viewport.KeyMap{
PageDown: key.NewBinding(
key.WithKeys("pgdown", " ", "f"),
key.WithHelp("f/pgdn", "page down"),
),
PageUp: key.NewBinding(
key.WithKeys("pgup", "b"),
key.WithHelp("b/pgup", "page up"),
),
}
if firstWord != "" {
ti.SetValue(firstWord)
}
return model{
wordInput: ti,
err: nil,
db: db,
c: c,
wordAddStatus: "",
p: *bluemonday.StrictPolicy(),
vp: vp,
ankiDeck: ankiDeck,
ankiModel: ankiModel,
apiURL: apiURL,
currentWord: firstWord,
}
}
func (m model) Init() tea.Cmd {
cmds := []tea.Cmd{textinput.Blink}
if m.currentWord != "" {
cmds = append(cmds, lookupWord(m.db, m.currentWord))
}
return tea.Batch(cmds...)
}
func lookupWord(db *sql.DB, word string) tea.Cmd {
return func() tea.Msg {
word = strings.TrimSpace(word) // remove leading / trailing whitespace
// Replace apostrophes (possible if copy-pasting) with single quotes
word = strings.ReplaceAll(word, `’`, `'`)
rows, err := db.Query(`select definition from words where word = ?`, word)
if err != nil {
if errors.Is(err, sql.ErrNoRows) {
return definitionMsg("")
}
return errMsg(fmt.Errorf("looking up '%s': %s", word, err))
}
defer rows.Close()
var combinedDefinition []string
for rows.Next() {
var definition string
err = rows.Scan(&definition)
if err != nil {
return errMsg(fmt.Errorf("looking up '%s': %s", word, err))
}
combinedDefinition = append(combinedDefinition, definition)
}
if err := rows.Err(); err != nil {
return errMsg(fmt.Errorf("looking up '%s': %s", word, err))
}
return definitionMsg(strings.Join(combinedDefinition, "\n\n"))
}
}
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
var cmd tea.Cmd
var textPickerLongerCmds []tea.Cmd
switch msg := msg.(type) {
case definitionMsg:
m.currentDefinition = string(msg)
m.err = nil
m.vp.SetContent(formatDefinitionForDisplay(m.p, m.currentDefinition, m.vp.Width))
return m, nil
case wordAddedMsg:
m.wordAddStatus = fmt.Sprintf("✅ Added '%s' to Anki", string(msg))
m.currentWord = ""
m.currentDefinition = ""
m.wordInput.SetValue("")
m.vp.SetContent("")
m.err = nil
case tea.WindowSizeMsg:
// headerHeight is the height of everything above the definition window.
headerHeight := 11
m.vp.Width = msg.Width
m.vp.Height = msg.Height - headerHeight
m.vp.SetContent(formatDefinitionForDisplay(m.p, m.currentDefinition, m.vp.Width))
case tea.KeyMsg:
switch msg.Type {
case tea.KeyCtrlC, tea.KeyCtrlD:
return m, tea.Quit
case tea.KeyEsc:
m.currentWord = ""
m.currentDefinition = ""
m.wordInput.SetValue("")
m.vp.SetContent("")
case tea.KeyEnter:
return m, addCard(m.c, m.apiURL, m.ankiDeck, m.ankiModel, m.currentWord, m.currentDefinition)
}
case errMsg:
m.err = msg
return m, nil
}
if m.wordInput.Value() != m.currentWord {
m.currentWord = m.wordInput.Value()
textPickerLongerCmds = append(textPickerLongerCmds, lookupWord(m.db, m.currentWord))
}
var vpCmd tea.Cmd
m.vp, vpCmd = m.vp.Update(msg)
textPickerLongerCmds = append(textPickerLongerCmds, vpCmd)
m.wordInput, cmd = m.wordInput.Update(msg)
textPickerLongerCmds = append(textPickerLongerCmds, cmd)
return m, tea.Batch(textPickerLongerCmds...)
}
var whitespaceTrimmerRe = regexp.MustCompile(`^[ \t]*$`)
func (m model) View() string {
return fmt.Sprintf(
"\x1b[1;30;42mLook up a word:\x1b[0m\n\n%s\n\n\x1b[1;30;42mStatus:\x1b[0m %s\n\n%s\n\n%s\n%s",
m.wordInput.View(),
formatStatus(m.err, m.wordAddStatus),
"(Ctrl-C to quit, Esc to clear, Enter to add to Anki, PgUp/Down to scroll)",
"\x1b[1;30;42mCurrent definition:\x1b[0m\n",
m.vp.View(),
) + "\n"
}
func formatDefinitionForDisplay(policy bluemonday.Policy, definition string, maxWidth int) string {
// Add a hyphen to the start of each definition
str := strings.ReplaceAll(definition, "<li class=sense>", "<li class=sense>- ")
// Italicize examples
str = strings.ReplaceAll(str, "\t<ul><li><i>", "\n\t<ul><li><i>\x1b[3;39;49m")
str = strings.ReplaceAll(str, "</i></li></ul></li>", "</i></li></ul></li>\x1b[0m")
// Remove all HTML tags
str = policy.Sanitize(str)
// Some Wiktionary entries have HTML entities in them. That's okay for Anki,
// but it's not okay for displaying the plain text in the console interface.
str = html.UnescapeString(str)
// Add some colour to the start of each definition
str = strings.ReplaceAll(str, "\t- ", "\x1b[0;33;49m•\x1b[0m ")
// Limit the width of the displayed definition to 80 characters, or the
// width of the viewport (whichever is smaller).
width := min(maxWidth, 80)
return wordwrap.String(str, width)
}
func formatStatus(lastError error, lastSuccess string) string {
if lastError == nil {
return lastSuccess
}
return fmt.Sprintf("\x1b[0;31;49m%s\x1b[0m", lastError.Error())
}
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