package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"os"
	"strconv"
	"strings"
	"testing"
	"time"
)

func TestUPSPreview(t *testing.T) {
	if os.Getenv("DASHBOARD_UPS_PREVIEW") != "1" {
		t.Skip("manual visual fixture")
	}
	s, a := trafficFixture(t)
	_ = a
	u := upsFromValues("NUT", "cyberpower", parseColonValues(cyberPowerSample))
	m := dashboardMetrics{UPS: u, CPU: CPUMetrics{CPUStatic: CPUStatic{Model: "DEMO / искусственные данные"}, Temperatures: []Temperature{}}, Timestamp: time.Now()}
	s.AddEntityMetrics(m)
	for i := 0; i < 30; i++ {
		ts := time.Now().Add(time.Duration(i-30) * time.Minute).Unix()
		v := 220 + float64(i%6)
		out := 225.0
		power := 150 + float64(i)
		runtime := 450.0
		freq := 49.8
		bat := 13.4
		s.AddEntityHistory("ups-voltage", "Вход", ts, &v, nil)
		s.AddEntityHistory("ups-voltage", "Выход", ts, &out, nil)
		s.AddEntityHistory("ups-power", "Расчётная ≈", ts, &power, nil)
		s.AddEntityHistory("ups-runtime", "Автономность", ts, &runtime, nil)
		s.AddEntityHistory("ups-frequency", "Частота", ts, &freq, nil)
		s.AddEntityHistory("ups-battery", "Батарея", ts, &bat, nil)
		p := historyPointFromMetrics(m)
		p.Timestamp = ts
		s.AddHistory(p)
	}
	mux := http.NewServeMux()
	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/" {
			writeJSON(w, map[string]any{}, nil)
			return
		}
		w.Header().Set("Content-Type", "text/html")
		w.Write([]byte(strings.Replace(dashboardHTML, "<title>", "<title>DEMO / ", 1)))
	})
	mux.HandleFunc("/api/events", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/event-stream")
		b, _ := json.Marshal(m)
		fmt.Fprintf(w, "data: %s\n\n", b)
		w.(http.Flusher).Flush()
		<-r.Context().Done()
	})
	mux.HandleFunc("/api/history", func(w http.ResponseWriter, r *http.Request) {
		h, _ := strconv.Atoi(r.URL.Query().Get("hours"))
		v, e := s.History(h)
		writeJSON(w, v, e)
	})
	mux.HandleFunc("/api/entity-history", func(w http.ResponseWriter, r *http.Request) {
		h, _ := strconv.Atoi(r.URL.Query().Get("hours"))
		v, e := s.EntityHistory(r.URL.Query().Get("kind"), h)
		writeJSON(w, v, e)
	})
	t.Fatal(http.ListenAndServe("127.0.0.1:19106", mux))
}