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wtf/gcal/widget.go
Chris Cummer ab4774c86a Widgets refresh via goroutine
All widgets now refresh their own data using their own internal go
routine. This allows them to set their own update schedule (where
RefreshInterval is the time in seconds between refreshes).

The app uses a goroutine to redraw itself once a second.
2018-03-30 10:12:27 -07:00

106 lines
1.9 KiB
Go

package gcal
import (
"fmt"
"strings"
"time"
"github.com/rivo/tview"
"google.golang.org/api/calendar/v3"
)
type Widget struct {
RefreshedAt time.Time
RefreshInterval int
View *tview.TextView
}
func NewWidget() *Widget {
widget := Widget{
RefreshedAt: time.Now(),
RefreshInterval: 1800,
}
widget.addView()
go widget.refresher()
return &widget
}
/* -------------------- Exported Functions -------------------- */
func (widget *Widget) Refresh() {
events := Fetch()
widget.View.SetTitle(" 🐸 Calendar ")
widget.RefreshedAt = time.Now()
fmt.Fprintf(widget.View, "%s", widget.contentFrom(events))
}
/* -------------------- Unexported Functions -------------------- */
func (widget *Widget) addView() {
view := tview.NewTextView()
view.SetBorder(true)
view.SetDynamicColors(true)
view.SetTitle(" Calendar ")
widget.View = view
}
func (widget *Widget) contentFrom(events *calendar.Events) string {
str := ""
for _, item := range events.Items {
ts, _ := time.Parse(time.RFC3339, item.Start.DateTime)
timestamp := ts.Format("Mon Jan _2 15:04:05 2006")
str = str + fmt.Sprintf(" [%s]%s[white]\n [%s]%s[white]\n\n", titleColor(item), item.Summary, descriptionColor(item), timestamp)
}
return str
}
func titleColor(item *calendar.Event) string {
ts, _ := time.Parse(time.RFC3339, item.Start.DateTime)
color := "red"
if strings.Contains(item.Summary, "1on1") {
color = "green"
}
if ts.Before(time.Now()) {
color = "grey"
}
return color
}
func descriptionColor(item *calendar.Event) string {
ts, _ := time.Parse(time.RFC3339, item.Start.DateTime)
color := "white"
if ts.Before(time.Now()) {
color = "grey"
}
return color
}
func (widget *Widget) refresher() {
tick := time.NewTicker(time.Duration(widget.RefreshInterval) * time.Second)
quit := make(chan struct{})
for {
select {
case <-tick.C:
widget.Refresh()
case <-quit:
tick.Stop()
return
}
}
}