forked from Mirrors/bubbletea
90 lines
1.4 KiB
Go
90 lines
1.4 KiB
Go
package main
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// A simple program that counts down from 5 and then exits.
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import (
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"errors"
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"fmt"
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"log"
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"net/http"
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"time"
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"github.com/charmbracelet/tea"
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)
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const url = "https://charm.sh/"
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type Model struct {
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status int
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err error
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}
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type statusMsg int
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type errMsg error
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func main() {
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p := tea.NewProgram(initialize, update, view, nil)
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if err := p.Start(); err != nil {
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log.Fatal(err)
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}
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}
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func initialize() (tea.Model, tea.Cmd) {
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return Model{0, nil}, checkServer
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}
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func update(msg tea.Msg, model tea.Model) (tea.Model, tea.Cmd) {
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m, ok := model.(Model)
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if !ok {
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return Model{err: errors.New("could not perform assertion on model during update")}, nil
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}
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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 "esc":
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fallthrough
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case "ctrl+c":
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fallthrough
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case "q":
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return m, tea.Quit
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default:
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return m, nil
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}
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case statusMsg:
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m.status = int(msg)
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return m, tea.Quit
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case errMsg:
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m.err = msg
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return m, nil
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default:
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return m, nil
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}
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}
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func view(model tea.Model) string {
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m, _ := model.(Model)
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s := fmt.Sprintf("Checking %s...", url)
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if m.err != nil {
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s += fmt.Sprintf("something went wrong: %s", m.err)
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} else if m.status != 0 {
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s += fmt.Sprintf("%d %s", m.status, http.StatusText(m.status))
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}
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return s
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}
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func checkServer() tea.Msg {
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c := &http.Client{
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Timeout: 10 * time.Second,
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}
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res, err := c.Get(url)
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if err != nil {
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return errMsg(err)
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}
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return statusMsg(res.StatusCode)
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}
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