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badge.go
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badge.go
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package main
import (
"fmt"
"github.com/gorilla/mux"
"html/template"
"net/http"
"strconv"
"strings"
"time"
)
const (
badgeSvg = string(`<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="{{ .Width }}" height="20"> <linearGradient id="b" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"/> <stop offset="1" stop-opacity=".1"/> </linearGradient> <clipPath id="a"> <rect width="{{ .Width }}" height="20" rx="3" fill="#fff"/> </clipPath> <g clip-path="url(#a)"><path fill="#{{ .LeftColor }}" d="M0 0h{{ .LeftSize }}v20H0z"/> <path fill="#{{.RightColor}}" d="M{{ .LeftSize }} 0h{{ .Width }}v20H{{ .LeftSize }}z"/> <path fill="url(#b)" d="M0 0h{{ .LeftSize }}{{ .Width }}v20H0z"/> </g> <g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="110"> <text x="{{ .LeftTextX }}" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="{{ .LeftTextSize }}">{{ .Label }}</text> <text x="{{ .LeftTextX }}" y="140" transform="scale(.1)" textLength="{{ .LeftTextSize }}">{{ .Label }}</text> <text x="{{ .RightTextX }}" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="{{ .RightTextSize }}">{{ .Balance }} {{ .Coin }}</text> <text x="{{ .RightTextX }}" y="140" transform="scale(.1)" textLength="{{ .RightTextSize }}">{{ .Balance }} {{ .Coin }}</text> </g> </svg>`)
defaultColor = "97CA00"
)
var (
svgTemplate *template.Template
)
func init() {
svgTemplate = template.New("badge")
svgTemplate.Parse(badgeSvg)
}
func NewBadge(r *http.Request) *Badge {
vars := mux.Vars(r)
color := r.FormValue("color")
label := r.FormValue("label")
badge := &Badge{
Coin: strings.ToUpper(vars["coin"]),
Token: vars["token"],
Address: vars["address"][0:7],
FullAddress: vars["address"],
Type: vars["type"],
Label: label,
Height: 20,
RightColor: color,
LeftColor: "555555",
start: time.Now(),
}
badge.Label = badge.Address[0:7]
if label != "" {
badge.Label = label
}
badge.RightColor = defaultColor
if color != "" {
badge.RightColor = ColorToHex(color)
}
return badge
}
func (b *Badge) SetBalance() *Badge {
var balance string
if b.Coin == "token" {
balance, _, _ = TokenBalance(b.Coin, b.FullAddress)
} else {
balance = CryptoBalance(b.Coin, b.FullAddress)
}
b.Balance = balance
return b
}
func (b *Badge) SetUSD() *Badge {
usd := FindCoinRate(b.Coin)
if usd == nil {
return b
}
balFloat, _ := strconv.ParseFloat(b.Balance, 10)
usdBalance := usd.Price * balFloat
usdString := fmt.Sprintf("%0.3f", usdBalance)
b.Balance = usdString
if b.Token != "" {
b.Coin = b.Coin + "/USD"
} else {
b.Coin = "USD"
}
b.toCurrency = true
return b
}
func (b *Badge) TokenBadge() *Badge {
balance, symbol, err := TokenBalance(b.Token, b.FullAddress)
if err != nil {
fmt.Println(err)
return b
}
b.Balance = balance
b.Coin = symbol
return b
}
func (b *Badge) Cache() *Badge {
switch b.Coin {
case "BTC":
b.cache = "public, max-age=900"
case "LTC":
b.cache = "public, max-age=600"
case "ETH":
b.cache = "public, max-age=120"
case "USD":
b.cache = "public, max-age=600"
default:
b.cache = "public, max-age=600"
}
return b
}
func (b *Badge) Clean() *Badge {
balanceFloat, _ := strconv.ParseFloat(b.Balance, 10)
if balanceFloat > 1000 {
b.Balance = RenderFloat("#,###.", b.Balance)
} else if balanceFloat > 100 {
b.Balance = RenderFloat("#,###.#", b.Balance)
} else if balanceFloat > 10 {
b.Balance = RenderFloat("#,###.##", b.Balance)
} else {
b.Balance = RenderFloat("#,###.###", b.Balance)
}
if b.toCurrency {
b.Balance = "$" + b.Balance
}
b.LeftSize = (len(b.Label) + 1) * 8
b.LeftTextSize = b.LeftSize * 8
b.LeftTextX = (b.LeftTextSize / 2) + 60
b.RightSize = (len(b.Balance) + len(b.Coin) + 1) * 8
b.RightTextSize = (b.RightSize * 8) + 40
b.RightTextX = (b.RightTextSize / 2) + (b.LeftSize * 2) + b.LeftTextSize + 60
b.Width = b.LeftSize + b.RightSize
return b.Cache()
}