package statusreporter

import (
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"
)

func TestBuildPayloadFromSnapshot(t *testing.T) {
	startedAt := time.Date(2026, 3, 22, 15, 59, 30, 0, time.UTC)
	lastHeartbeatAt := time.Date(2026, 3, 22, 16, 0, 0, 0, time.UTC)
	snapshot := Snapshot{
		Status:                "running",
		ScreenID:              "info01-dev",
		ServerBaseURL:         "http://127.0.0.1:8080",
		MQTTBroker:            "tcp://127.0.0.1:1883",
		HeartbeatEverySeconds: 30,
		StartedAt:             startedAt,
		LastHeartbeatAt:       lastHeartbeatAt,
	}

	payload := buildPayload(snapshot, lastHeartbeatAt)

	if got, want := payload.ScreenID, "info01-dev"; got != want {
		t.Fatalf("ScreenID = %q, want %q", got, want)
	}

	if got, want := payload.Timestamp, lastHeartbeatAt.Format(time.RFC3339); got != want {
		t.Fatalf("Timestamp = %q, want %q", got, want)
	}

	if got, want := payload.StartedAt, startedAt.Format(time.RFC3339); got != want {
		t.Fatalf("StartedAt = %q, want %q", got, want)
	}

	if got, want := payload.LastHeartbeatAt, lastHeartbeatAt.Format(time.RFC3339); got != want {
		t.Fatalf("LastHeartbeatAt = %q, want %q", got, want)
	}
}

func TestReporterSendStatus(t *testing.T) {
	var received statusPayload
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if got, want := r.Method, http.MethodPost; got != want {
			t.Fatalf("method = %s, want %s", got, want)
		}

		if got, want := r.URL.Path, "/api/v1/player/status"; got != want {
			t.Fatalf("path = %s, want %s", got, want)
		}

		if err := json.NewDecoder(r.Body).Decode(&received); err != nil {
			t.Fatalf("Decode() error = %v", err)
		}

		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(`{"status":"accepted"}`))
	}))
	defer server.Close()

	reporter := New(server.URL, server.Client(), func() time.Time {
		return time.Date(2026, 3, 22, 16, 0, 0, 0, time.UTC)
	})

	err := reporter.Send(context.Background(), Snapshot{
		Status:                "running",
		ScreenID:              "info01-dev",
		ServerBaseURL:         "http://127.0.0.1:8080",
		MQTTBroker:            "tcp://127.0.0.1:1883",
		HeartbeatEverySeconds: 30,
		StartedAt:             time.Date(2026, 3, 22, 15, 59, 30, 0, time.UTC),
		LastHeartbeatAt:       time.Date(2026, 3, 22, 15, 59, 55, 0, time.UTC),
	})
	if err != nil {
		t.Fatalf("Send() error = %v", err)
	}

	if got, want := received.ScreenID, "info01-dev"; got != want {
		t.Fatalf("received.ScreenID = %q, want %q", got, want)
	}
}