package service

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

func TestRuntimeLogStoreRetainsLatestLines(t *testing.T) {
	now := func() time.Time { return time.Date(2026, 8, 13, 12, 30, 0, 0, time.Local) }
	store := newRuntimeLogStore(2, now)
	if _, err := store.Write([]byte("first\nsecond")); err != nil {
		t.Fatal(err)
	}
	if _, err := store.Write([]byte(" line\nERROR third\n")); err != nil {
		t.Fatal(err)
	}

	result := store.Latest(10)
	if result.Total != 2 || len(result.Items) != 2 {
		t.Fatalf("result = %#v", result)
	}
	if result.Items[0].Message != "ERROR third" || result.Items[0].Level != "ERROR" {
		t.Fatalf("newest = %#v", result.Items[0])
	}
	if result.Items[1].Message != "second line" {
		t.Fatalf("second = %#v", result.Items[1])
	}
}

func TestRuntimeLogsEndpointIsNotRecordedAsOperation(t *testing.T) {
	runtimeLogs := NewRuntimeLogStore()
	service, err := NewService("sqlite::@file(:memory:)", runtimeLogs)
	if err != nil {
		t.Fatal(err)
	}
	_, _ = runtimeLogs.Write([]byte("service ready\n"))
	req := httptest.NewRequest(http.MethodGet, "/api/runtime-logs?limit=10", nil)
	res := httptest.NewRecorder()
	service.Router().ServeHTTP(res, req)
	if res.Code != http.StatusOK {
		t.Fatalf("status = %d body = %s", res.Code, res.Body.String())
	}
	var result RuntimeLogResult
	if err := json.Unmarshal(res.Body.Bytes(), &result); err != nil {
		t.Fatal(err)
	}
	if len(result.Items) != 1 || result.Items[0].Message != "service ready" {
		t.Fatalf("result = %#v", result)
	}
	if page := service.operationLogs.Query("", "", "", 1, 20); page.Total != 0 {
		t.Fatalf("runtime log polling was recorded: %#v", page)
	}
}