force refresh keyboard shortcut

Former-commit-id: 17bb894640bb324e9017d5c2c1564a7f9e0018bc [formerly 17bb894640bb324e9017d5c2c1564a7f9e0018bc [formerly f443687078b13969ed122a514057689feba8bbce [formerly 9b7fa0dc58]]]
Former-commit-id: 82cbd609bf54dee2555c16724b38d7db38c478a7
Former-commit-id: 1023e7eda1117d981e213c2508c59348cd1ef88f [formerly aeb281ea33215d36554a299076ed2861b62ae1a2]
Former-commit-id: 03042640e3e2913a4c3b360f974b31a2fa5b702b

README.md

@@ -62,6 +62,7 @@ List of shortcuts:
 |`<ctrl-p>`|alias to previous page|
 |`<enter>`|visit highlighted coin on CoinMarketCap|
 |`<space>`|alias to `<enter>`
+|`<ctr-r>`|force refresh|
 |`j`|alias to `<down>`|
 |`k`|alias to `<up>`|
 |`r`|sort by *[r]ank*|

cointop/cointop.go

@@ -41,6 +41,7 @@ type Cointop struct {
 	perpage       int
 	refreshmux    sync.Mutex
 	refreshticker *time.Ticker
+	forcerefresh  chan bool
 }
 
 // Run runs cointop
@@ -61,6 +62,7 @@ func Run() {
 		sortdesc:      false,
 		page:          0,
 		perpage:       100,
+		forcerefresh:  make(chan bool),
 	}
 	g.SetManagerFunc(ct.layout)
 	if err := ct.keybindings(g); err != nil {

cointop/keybindings.go

@@ -43,6 +43,7 @@ func (ct *Cointop) keybindings(g *gocui.Gui) error {
 	ct.setKeybinding('t', ct.sortfn("totalsupply", true))
 	ct.setKeybinding('a', ct.sortfn("availablesupply", true))
 	ct.setKeybinding('l', ct.sortfn("lastupdated", true))
+	ct.setKeybinding(gocui.KeyCtrlR, ct.refresh)
 	ct.setKeybinding(gocui.KeyEnter, ct.enter)
 	ct.setKeybinding(gocui.KeySpace, ct.enter)
 	ct.setKeybinding(gocui.KeyCtrlC, ct.quit)
@@ -51,6 +52,11 @@ func (ct *Cointop) keybindings(g *gocui.Gui) error {
 	return nil
 }
 
+func (ct *Cointop) refresh(g *gocui.Gui, v *gocui.View) error {
+	ct.forcerefresh <- true
+	return nil
+}
+
 func (ct *Cointop) enter(g *gocui.Gui, v *gocui.View) error {
 	exec.Command("open", ct.rowLink()).Output()
 	return nil

cointop/layout.go

@@ -2,6 +2,8 @@ package cointop
 
 import (
 	"math"
+	"strings"
+	"time"
 
 	"github.com/jroimartin/gocui"
 	apitypes "github.com/miguelmota/cointop/pkg/api/types"
@@ -166,14 +168,43 @@ func (ct *Cointop) intervalFetchData() {
 	go func() {
 		for {
 			select {
+			case <-ct.forcerefresh:
+				ct.refreshAll()
 			case <-ct.refreshticker.C:
-				ct.refreshmux.Lock()
-				ct.updateCoins()
-				ct.updateTable()
-				ct.updateMarket()
-				ct.updateChart()
-				ct.refreshmux.Unlock()
+				ct.refreshAll()
 			}
 		}
 	}()
 }
+
+func (ct *Cointop) refreshAll() error {
+	ct.refreshmux.Lock()
+	ct.setRefreshStatus()
+	ct.updateCoins()
+	ct.updateTable()
+	ct.updateMarket()
+	ct.updateChart()
+	ct.refreshmux.Unlock()
+	return nil
+}
+
+func (ct *Cointop) setRefreshStatus() {
+	go func() {
+		ct.loadingTicks("refreshing", 900)
+		ct.updateStatus("")
+		ct.rowChanged()
+	}()
+}
+
+func (ct *Cointop) loadingTicks(s string, t int) {
+	interval := 150
+	k := 0
+	for i := 0; i < (t / interval); i++ {
+		ct.updateStatus(s + strings.Repeat(".", k))
+		time.Sleep(time.Duration(i*interval) * time.Millisecond)
+		k = k + 1
+		if k > 3 {
+			k = 0
+		}
+	}
+}

cointop/status.go

@@ -9,8 +9,11 @@ import (
 
 func (ct *Cointop) updateStatus(s string) {
 	maxX, _ := ct.g.Size()
-	ct.statusview.Clear()
-	fmt.Fprintln(ct.statusview, pad.Right(fmt.Sprintf("[q]uit [← →]page %s", s), maxX, " "))
+	ct.g.Update(func(g *gocui.Gui) error {
+		ct.statusview.Clear()
+		fmt.Fprintln(ct.statusview, pad.Right(fmt.Sprintf("[q]uit [← →]page %s", s), maxX, " "))
+		return nil
+	})
 }
 
 func (ct *Cointop) refreshRowLink() {