server: Add /api/history/day

server/api.go

@@ -3,12 +3,16 @@ package server
 import (
 	"encoding/json"
 	"net/http"
+	"time"
+
+	"status/db"
 )
 
 func writeJSON(w http.ResponseWriter, a interface{}) {
 	bytes, err := json.Marshal(a)
 	if err != nil {
 		http.Error(w, "500 Internal Server Error", http.StatusInternalServerError)
+		return
 	}
 	w.Header().Set("Content-Type", "application/json")
 	_, err = w.Write(bytes)
@@ -21,3 +25,17 @@ func allStatus(w http.ResponseWriter, req *http.Request) {
 	status := getStatus()
 	writeJSON(w, status)
 }
+
+func dayHistory(w http.ResponseWriter, req *http.Request) {
+	keys, ok := req.URL.Query()["service_name"]
+	if !ok || len(keys) == 0 || len(keys[0]) < 1 {
+		http.Error(w, "`service_name` not provided", http.StatusBadRequest)
+		return
+	}
+	if len(keys) >= 2 {
+		http.Error(w, "Only one `service_name` allowed", http.StatusBadRequest)
+		return
+	}
+	entries := db.GetFromDB(keys[0], time.Now().Add(time.Duration(-24)*time.Hour), time.Now())
+	writeJSON(w, entries)
+}

server/server.go

@@ -8,6 +8,7 @@ import (
 
 func apiEndpoints() {
 	http.HandleFunc("/api/latest", allStatus)
+	http.HandleFunc("/api/history/day", dayHistory)
 }
 
 func StartServer(port int) {