Work on #12: Move each providers in their own packages

alerting/provider/twilio/twilio.go

@@ -0,0 +1,35 @@
+package twilio
+
+import (
+	"encoding/base64"
+	"fmt"
+	"github.com/TwinProduction/gatus/alerting/provider/custom"
+	"net/url"
+)
+
+type AlertProvider struct {
+	SID   string `yaml:"sid"`
+	Token string `yaml:"token"`
+	From  string `yaml:"from"`
+	To    string `yaml:"to"`
+}
+
+func (provider *AlertProvider) IsValid() bool {
+	return len(provider.Token) > 0 && len(provider.SID) > 0 && len(provider.From) > 0 && len(provider.To) > 0
+}
+
+func (provider *AlertProvider) ToCustomAlertProvider(message string) *custom.AlertProvider {
+	return &custom.AlertProvider{
+		Url:    fmt.Sprintf("https://api.twilio.com/2010-04-01/Accounts/%s/Messages.json", provider.SID),
+		Method: "POST",
+		Body: url.Values{
+			"To":   {provider.To},
+			"From": {provider.From},
+			"Body": {message},
+		}.Encode(),
+		Headers: map[string]string{
+			"Content-Type":  "application/x-www-form-urlencoded",
+			"Authorization": fmt.Sprintf("Basic %s", base64.StdEncoding.EncodeToString([]byte(fmt.Sprintf("%s:%s", provider.SID, provider.Token)))),
+		},
+	}
+}