forked from varia/go-sh-manymanuals
124 lines
1.9 KiB
Go
124 lines
1.9 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"io/ioutil"
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"log"
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"os"
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tea "github.com/charmbracelet/bubbletea"
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)
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const help = `go-sh-manymanuals: ???
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???
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Options:
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-h output help
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`
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var portFlag int
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var helpFlag bool
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func handleCliFlags() {
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flag.BoolVar(&helpFlag, "h", false, "output help")
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flag.Parse()
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}
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type model struct {
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manuals []string
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cursor int
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selected map[int]struct{}
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}
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func initialModel() model {
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manuals, err := gatherManuals()
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if err != nil {
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log.Fatalf("unable to read manuals: %s", err)
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os.Exit(1)
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}
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return model{
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manuals: manuals,
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selected: make(map[int]struct{}),
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}
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}
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func gatherManuals() ([]string, error) {
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fileInfos, err := ioutil.ReadDir(".")
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if err != nil {
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return nil, err
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}
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var filenames []string
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for _, fileInfo := range fileInfos {
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filenames = append(filenames, fileInfo.Name())
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}
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return filenames, nil
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}
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func (m model) Init() tea.Cmd {
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return nil
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}
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func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
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switch msg := msg.(type) {
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case tea.KeyMsg:
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switch msg.String() {
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case "ctrl+c", "q":
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return m, tea.Quit
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case "up", "k":
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if m.cursor > 0 {
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m.cursor--
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}
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case "down", "j":
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if m.cursor < len(m.manuals)-1 {
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m.cursor++
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}
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case "enter", " ":
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_, ok := m.selected[m.cursor]
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if ok {
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// doing nothing!
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} else {
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m.selected[m.cursor] = struct{}{}
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}
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}
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}
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return m, nil
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}
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func (m model) View() string {
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ui := "File listing for current working directory\n\n"
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for i, choice := range m.manuals {
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cursor := " "
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if m.cursor == i {
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cursor = ">"
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}
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ui += fmt.Sprintf("%s %s\n", cursor, choice)
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}
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ui += "\nPress q to quit.\n"
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return ui
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}
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func main() {
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handleCliFlags()
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if helpFlag {
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fmt.Printf(help)
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os.Exit(0)
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}
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p := tea.NewProgram(initialModel(), tea.WithAltScreen())
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if err := p.Start(); err != nil {
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fmt.Printf("Alas, there's been an error: %v", err)
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os.Exit(1)
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}
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}
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