initial favorites

Former-commit-id: db3cf1d7f95f094a30fe0a0cb4d079c79308e7d6 [formerly db3cf1d7f95f094a30fe0a0cb4d079c79308e7d6 [formerly e8f25d5a964bf04b530c444388de9abbe15865d7 [formerly 073b95e8996d5178fa6ea0958e7d035f85322b4f]]]
Former-commit-id: d15e7425cb473d850fbc133c06aeafba2a18dbf1
Former-commit-id: 4624158aa075ba4f6ab628cf044592545c1d7c1f [formerly cc1f25a7c9683482fb49c98ad4436ed046582575]
Former-commit-id: 3e1b9170d806d3ecc3dc85ff5d18e1009e7984bc

README.md

@@ -30,14 +30,6 @@
 - Color coded
 - Works on macOS, Linux, and Windows
 
-#### Future releases
-
-- Advanced search
-- "Favorites" list
-- Currency conversion (i.e. Euro, Yen)
-- Markets/Exchanges
-- CryptoCompare API
-
 ## Installing
 
 Make sure to have [go](https://golang.org/) (1.9+) installed, then do:

cointop/cointop.go

@@ -8,36 +8,37 @@ import (
 	"github.com/gizak/termui"
 	"github.com/jroimartin/gocui"
 	"github.com/miguelmota/cointop/pkg/api"
-	apt "github.com/miguelmota/cointop/pkg/api/types"
 	"github.com/miguelmota/cointop/pkg/table"
 )
 
 // Cointop cointop
 type Cointop struct {
-	g             *gocui.Gui
-	marketview    *gocui.View
-	chartview     *gocui.View
-	chartpoints   [][]termui.Cell
-	headersview   *gocui.View
-	tableview     *gocui.View
-	table         *table.Table
-	statusbarview *gocui.View
-	sortdesc      bool
-	sortby        string
-	api           api.Interface
-	allcoins      []*apt.Coin
-	coins         []*apt.Coin
-	allcoinsmap   map[string]apt.Coin
-	page          int
-	perpage       int
-	refreshmux    sync.Mutex
-	refreshticker *time.Ticker
-	forcerefresh  chan bool
-	selectedcoin  *apt.Coin
-	maxtablewidth int
-	shortcutkeys  map[string]string
-	config        config // toml config
-	searchfield   *gocui.View
+	g                 *gocui.Gui
+	marketview        *gocui.View
+	chartview         *gocui.View
+	chartpoints       [][]termui.Cell
+	headersview       *gocui.View
+	tableview         *gocui.View
+	table             *table.Table
+	statusbarview     *gocui.View
+	sortdesc          bool
+	sortby            string
+	api               api.Interface
+	allcoins          []*coin
+	coins             []*coin
+	allcoinsmap       map[string]coin
+	page              int
+	perpage           int
+	refreshmux        sync.Mutex
+	refreshticker     *time.Ticker
+	forcerefresh      chan bool
+	selectedcoin      *coin
+	maxtablewidth     int
+	shortcutkeys      map[string]string
+	config            config // toml config
+	searchfield       *gocui.View
+	favorites         map[string]bool
+	filterByFavorites bool
 }
 
 // Run runs cointop
@@ -52,6 +53,10 @@ func Run() {
 		forcerefresh:  make(chan bool),
 		maxtablewidth: 175,
 		shortcutkeys:  defaultShortcuts(),
+		favorites: map[string]bool{
+			"ETH": true,
+			"ADT": true,
+		},
 	}
 	_ = ct.setupConfig()
 	g, err := gocui.NewGui(gocui.Output256)

cointop/favorites.go

@@ -0,0 +1,21 @@
+package cointop
+
+func (ct *Cointop) toggleShowFavorites() error {
+	for _, v := range ct.allcoinsmap {
+		if ct.favorites[v.Symbol] {
+			v.Favorite = true
+		}
+	}
+
+	ct.filterByFavorites = !ct.filterByFavorites
+	ct.sort(ct.sortby, ct.sortdesc, ct.coins)
+	//ct.updateCoins()
+	/*
+		ct.update(func() {
+			ct.tableview.Clear()
+			ct.updateTable()
+		})
+		ct.rowChanged()
+	*/
+	return nil
+}

cointop/keybindings.go

@@ -261,12 +261,15 @@ func (ct *Cointop) keybindings(g *gocui.Gui) error {
 			fn = ct.sortfn("24hvolume", true)
 		case "last_page":
 			fn = ct.keyfn(ct.lastPage)
-		case "quit":
-			fn = ct.keyfn(ct.quit)
-			view = ""
 		case "open_search":
 			fn = ct.keyfn(ct.openSearch)
 			view = ""
+		case "show_favorites":
+			fn = ct.keyfn(ct.toggleShowFavorites)
+			view = ""
+		case "quit":
+			fn = ct.keyfn(ct.quit)
+			view = ""
 		default:
 			fn = ct.keyfn(ct.noop)
 		}

cointop/layout.go

@@ -2,10 +2,8 @@ package cointop
 
 import (
 	"fmt"
-	"math"
 
 	"github.com/jroimartin/gocui"
-	apt "github.com/miguelmota/cointop/pkg/api/types"
 )
 
 func (ct *Cointop) layout(g *gocui.Gui) error {
@@ -105,13 +103,34 @@ func (ct *Cointop) setActiveView(v string) error {
 }
 
 func (ct *Cointop) updateCoins() error {
-	list := []*apt.Coin{}
+	list := []*coin{}
 	allcoinsmap, err := ct.api.GetAllCoinData()
 	if err != nil {
 		return err
 	}
 
-	ct.allcoinsmap = allcoinsmap
+	if len(ct.allcoinsmap) == 0 {
+		ct.allcoinsmap = map[string]coin{}
+	}
+
+	for k, v := range allcoinsmap {
+		ct.allcoinsmap[k] = coin{
+			ID:               v.ID,
+			Name:             v.Name,
+			Symbol:           v.Symbol,
+			Rank:             v.Rank,
+			PriceUSD:         v.PriceUSD,
+			PriceBTC:         v.PriceBTC,
+			USD24HVolume:     v.USD24HVolume,
+			MarketCapUSD:     v.MarketCapUSD,
+			AvailableSupply:  v.AvailableSupply,
+			TotalSupply:      v.TotalSupply,
+			PercentChange1H:  v.PercentChange1H,
+			PercentChange24H: v.PercentChange24H,
+			PercentChange7D:  v.PercentChange7D,
+			LastUpdated:      v.LastUpdated,
+		}
+	}
 	if len(ct.allcoins) == 0 {
 		for i := range ct.allcoinsmap {
 			coin := ct.allcoinsmap[i]
@@ -148,22 +167,6 @@ func (ct *Cointop) updateCoins() error {
 	return nil
 }
 
-func (ct *Cointop) updateTable() error {
-	start := ct.page * ct.perpage
-	end := start + ct.perpage
-	if end >= len(ct.allcoins)-1 {
-		start = int(math.Floor(float64(start/100)) * 100)
-
-		end = len(ct.allcoins) - 1
-	}
-
-	sliced := ct.allcoins[start:end]
-	ct.coins = sliced
-	ct.sort(ct.sortby, ct.sortdesc, ct.coins)
-	ct.refreshTable()
-	return nil
-}
-
 func (ct *Cointop) intervalFetchData() {
 	go func() {
 		for {

cointop/navigation.go

@@ -17,7 +17,7 @@ func (ct *Cointop) totalPerPage() int {
 }
 
 func (ct *Cointop) getListCount() int {
-	return len(ct.allcoins)
+	return len(ct.allCoins())
 }
 
 func (ct *Cointop) setPage(page int) int {

cointop/shortcuts.go

@@ -37,6 +37,7 @@ func actionsMap() map[string]bool {
 		"sort_right_column":               true,
 		"toggle_row_chart":                true,
 		"open_search":                     true,
+		"show_favorites":                  true,
 	}
 }
 
@@ -70,6 +71,7 @@ func defaultShortcuts() map[string]string {
 		"7":         "sort_column_7d_change",
 		"a":         "sort_column_available_supply",
 		"c":         "toggle_row_chart",
+		"f":         "show_favorites",
 		"g":         "move_to_page_first_row",
 		"G":         "move_to_page_last_row",
 		"h":         "previous_page",

cointop/sort.go

@@ -3,7 +3,6 @@ package cointop
 import (
 	"github.com/bradfitz/slice"
 	"github.com/jroimartin/gocui"
-	apt "github.com/miguelmota/cointop/pkg/api/types"
 )
 
 var colorder = []string{
@@ -20,7 +19,7 @@ var colorder = []string{
 	"lastupdated",
 }
 
-func (ct *Cointop) sort(sortby string, desc bool, list []*apt.Coin) {
+func (ct *Cointop) sort(sortby string, desc bool, list []*coin) {
 	ct.sortby = sortby
 	ct.sortdesc = desc
 	slice.Sort(list[:], func(i, j int) bool {

cointop/table.go

@@ -2,11 +2,11 @@ package cointop
 
 import (
 	"fmt"
+	"math"
 	"strconv"
 	"strings"
 	"time"
 
-	apt "github.com/miguelmota/cointop/pkg/api/types"
 	"github.com/miguelmota/cointop/pkg/color"
 	"github.com/miguelmota/cointop/pkg/humanize"
 	"github.com/miguelmota/cointop/pkg/table"
@@ -84,6 +84,30 @@ func (ct *Cointop) refreshTable() error {
 	return nil
 }
 
+func (ct *Cointop) updateTable() error {
+	start := ct.page * ct.perpage
+	end := start + ct.perpage
+	if start >= len(ct.allCoins())-1 {
+		start = 0
+	}
+	if end >= len(ct.allCoins())-1 {
+		start = int(math.Floor(float64(start/100)) * 100)
+
+		end = len(ct.allCoins()) - 1
+	}
+	if start < 0 {
+		start = 0
+	}
+	if end >= len(ct.allCoins()) {
+		end = len(ct.allCoins()) - 1
+	}
+	sliced := ct.allCoins()[start:end]
+	ct.coins = sliced
+	ct.sort(ct.sortby, ct.sortdesc, ct.coins)
+	ct.refreshTable()
+	return nil
+}
+
 func (ct *Cointop) highlightedRowIndex() int {
 	_, y := ct.tableview.Origin()
 	_, cy := ct.tableview.Cursor()
@@ -97,7 +121,7 @@ func (ct *Cointop) highlightedRowIndex() int {
 	return idx
 }
 
-func (ct *Cointop) highlightedRowCoin() *apt.Coin {
+func (ct *Cointop) highlightedRowCoin() *coin {
 	idx := ct.highlightedRowIndex()
 	return ct.coins[idx]
 }
@@ -106,3 +130,18 @@ func (ct *Cointop) rowLink() string {
 	slug := strings.ToLower(strings.Replace(ct.highlightedRowCoin().Name, " ", "-", -1))
 	return fmt.Sprintf("https://coinmarketcap.com/currencies/%s", slug)
 }
+
+func (ct *Cointop) allCoins() []*coin {
+	if ct.filterByFavorites {
+		var list []*coin
+		for i := range ct.allcoins {
+			coin := ct.allcoins[i]
+			if coin.Favorite {
+				list = append(list, coin)
+			}
+		}
+		return list
+	}
+
+	return ct.allcoins
+}

cointop/types.go

@@ -0,0 +1,19 @@
+package cointop
+
+type coin struct {
+	ID               string
+	Name             string
+	Symbol           string
+	Rank             int
+	PriceUSD         float64
+	PriceBTC         float64
+	USD24HVolume     float64
+	MarketCapUSD     float64
+	AvailableSupply  float64
+	TotalSupply      float64
+	PercentChange1H  float64
+	PercentChange24H float64
+	PercentChange7D  float64
+	LastUpdated      string
+	Favorite         bool
+}

pkg/levenshtein/levenshtein.go

@@ -88,7 +88,7 @@ func DamerauLevenshteinDistance(s1, s2 string) int {
 
 // min returns the minimum number of passed int slices.
 func min(is ...int) int {
-	min := int(math.MaxInt64)
+	min := int(math.MaxInt32)
 	for _, v := range is {
 		if min > v {
 			min = v