mirror of
https://github.com/taigrr/wtf
synced 2025-01-18 04:03:14 -08:00
89 lines
1.9 KiB
Go
89 lines
1.9 KiB
Go
package exchangerates
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import (
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"fmt"
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"regexp"
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"github.com/rivo/tview"
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"github.com/wtfutil/wtf/view"
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"github.com/wtfutil/wtf/wtf"
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)
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type Widget struct {
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view.ScrollableWidget
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settings *Settings
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rates map[string]map[string]float64
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err error
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}
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func NewWidget(app *tview.Application, pages *tview.Pages, settings *Settings) *Widget {
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widget := Widget{
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ScrollableWidget: view.NewScrollableWidget(app, settings.common),
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settings: settings,
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}
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widget.SetRenderFunction(widget.Render)
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return &widget
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}
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/* -------------------- Exported Functions -------------------- */
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func (widget *Widget) Refresh() {
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rates, err := FetchExchangeRates(widget.settings)
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if err != nil {
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widget.err = err
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} else {
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widget.rates = rates
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}
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// The last call should always be to the display function
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widget.Render()
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}
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func (widget *Widget) Render() {
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widget.Redraw(widget.content)
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}
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/* -------------------- Unexported Functions -------------------- */
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func (widget *Widget) content() (string, string, bool) {
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if widget.err != nil {
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widget.View.SetWrap(true)
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return widget.CommonSettings().Title, widget.err.Error(), false
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}
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out := ""
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idx := 0
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for base, rates := range widget.settings.rates {
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for _, cur := range rates {
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rate := widget.rates[base][cur]
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out += fmt.Sprintf(
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"[%s]1 %s = %s %s[white]\n",
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widget.CommonSettings().RowColor(idx),
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base,
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widget.formatConversionRate(rate),
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cur,
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)
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idx++
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}
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}
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widget.View.SetWrap(false)
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return widget.CommonSettings().Title, out, false
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}
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// formatConversionRate takes the raw conversion float and formats it to the precision the
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// user specifies in their config (or to the default value)
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func (widget *Widget) formatConversionRate(rate float64) string {
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rate = wtf.TruncateFloat64(rate, widget.settings.precision)
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r, _ := regexp.Compile(`\.?0*$`)
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return r.ReplaceAllString(fmt.Sprintf("%10.7f", rate), "")
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}
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