From ab9f14dcfaee0bc909a892e21d2de9c488e97297 Mon Sep 17 00:00:00 2001
From: Ani Channarasappa <git@ani.dev>
Date: Sun, 27 Dec 2020 17:01:56 -0500
Subject: [PATCH] Added sorting and fixed negative color gradient

---
 internal/ui/component/watchlist/watchlist.go | 25 ++++----------------
 internal/ui/ui.go                            | 10 ++++++--
 2 files changed, 12 insertions(+), 23 deletions(-)

diff --git a/internal/ui/component/watchlist/watchlist.go b/internal/ui/component/watchlist/watchlist.go
index 0040354..e4956a1 100644
--- a/internal/ui/component/watchlist/watchlist.go
+++ b/internal/ui/component/watchlist/watchlist.go
@@ -24,12 +24,6 @@ const (
 	maxPercentChangeColorGradient = 10
 )
 
-const (
-	PositivePriceChange = iota
-	NegativePriceChange
-	NeutralPriceChange
-)
-
 type Model struct {
 	Width  int
 	Quotes []quote.Quote
@@ -110,10 +104,10 @@ func priceText(change float64, changePercent float64) string {
 	}
 
 	if change > 0.0 {
-		return stylePricePositive(change)("↑ " + convertFloatToString(change) + "  (" + convertFloatToString(changePercent) + "%)")
+		return stylePricePositive(changePercent)("↑ " + convertFloatToString(change) + "  (" + convertFloatToString(changePercent) + "%)")
 	}
 
-	return stylePriceNegative(change)("↓ " + convertFloatToString(change) + " (" + convertFloatToString(changePercent) + "%)")
+	return stylePriceNegative(changePercent)("↓ " + convertFloatToString(change) + " (" + convertFloatToString(changePercent) + "%)")
 }
 
 // util
@@ -145,19 +139,8 @@ func getNormalizedPercentWithMax(percent float64, maxPercent float64) float64 {
 
 	absolutePercent := math.Abs(percent)
 	if absolutePercent > maxPercent {
-		return 1
+		return 1.0
 	}
-
-	return percent / maxPercent
-
-}
-
-// Accepts a start color, end color, and percent and returns the color at the position between them
-func getColorHex(startColorHex string, endColorHex string, normalizedPercent float64) string {
-
-	c1, _ := colorful.Hex(startColorHex)
-	c2, _ := colorful.Hex(endColorHex)
-
-	return c1.BlendHsv(c2, normalizedPercent).Hex()
+	return math.Abs(percent / maxPercent)
 
 }
diff --git a/internal/ui/ui.go b/internal/ui/ui.go
index 02a55c6..8727311 100644
--- a/internal/ui/ui.go
+++ b/internal/ui/ui.go
@@ -2,6 +2,7 @@ package ui
 
 import (
 	"fmt"
+	"sort"
 	"ticker-tape/internal/quote"
 	"ticker-tape/internal/ui/component/watchlist"
 	"time"
@@ -33,7 +34,7 @@ type Model struct {
 func (m Model) updateQuotes() tea.Cmd {
 	return tea.Tick(time.Second*time.Duration(m.requestInterval), func(t time.Time) tea.Msg {
 		return QuoteMsg{
-			quotes: m.requestQuotes(m.symbols),
+			quotes: sortQuotes(m.requestQuotes(m.symbols)),
 		}
 	})
 }
@@ -58,7 +59,7 @@ func (m Model) Init() tea.Cmd {
 	m.watchlist = watchlist.NewModel()
 	return func() tea.Msg {
 		return QuoteMsg{
-			quotes: m.requestQuotes(m.symbols),
+			quotes: sortQuotes(m.requestQuotes(m.symbols)),
 		}
 	}
 }
@@ -118,3 +119,8 @@ func (m Model) View() string {
 func footer(elementWidth int) string {
 	return footerHighlightStyle(" 🚀 ticker-tape ") + helpStyle(" q: exit")
 }
+
+func sortQuotes(q []quote.Quote) []quote.Quote {
+	sort.Slice(q, func(i, j int) bool { return q[i].RegularMarketChangePercent < q[j].RegularMarketChangePercent })
+	return q
+}