Rename Service to Endpoint (#192)

* Add clarifications in comments

* #191: Rename Service to Endpoint

core/endpoint_status.go

@@ -0,0 +1,40 @@
+package core
+
+import "github.com/TwiN/gatus/v3/util"
+
+// EndpointStatus contains the evaluation Results of an Endpoint
+type EndpointStatus struct {
+	// Name of the endpoint
+	Name string `json:"name,omitempty"`
+
+	// Group the endpoint is a part of. Used for grouping multiple endpoints together on the front end.
+	Group string `json:"group,omitempty"`
+
+	// Key is the key representing the EndpointStatus
+	Key string `json:"key"`
+
+	// Results is the list of endpoint evaluation results
+	Results []*Result `json:"results"`
+
+	// Events is a list of events
+	Events []*Event `json:"events"`
+
+	// Uptime information on the endpoint's uptime
+	//
+	// Used by the memory store.
+	//
+	// To retrieve the uptime between two time, use store.GetUptimeByKey.
+	Uptime *Uptime `json:"-"`
+}
+
+// NewEndpointStatus creates a new EndpointStatus
+func NewEndpointStatus(group, name string) *EndpointStatus {
+	return &EndpointStatus{
+		Name:    name,
+		Group:   group,
+		Key:     util.ConvertGroupAndEndpointNameToKey(group, name),
+		Results: make([]*Result, 0),
+		Events:  make([]*Event, 0),
+		Uptime:  NewUptime(),
+	}
+}