package api

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"path/filepath"
	"testing"

	"github.com/grafana/grafana/pkg/plugins"
	accesscontrolmock "github.com/grafana/grafana/pkg/services/accesscontrol/mock"
	"github.com/grafana/grafana/pkg/services/featuremgmt"
	"github.com/grafana/grafana/pkg/services/licensing"
	pluginSettings "github.com/grafana/grafana/pkg/services/pluginsettings/service"
	"github.com/grafana/grafana/pkg/services/rendering"
	"github.com/grafana/grafana/pkg/services/secrets/fakes"
	secretsManager "github.com/grafana/grafana/pkg/services/secrets/manager"
	"github.com/grafana/grafana/pkg/services/sqlstore"
	"github.com/grafana/grafana/pkg/services/updatechecker"
	"github.com/grafana/grafana/pkg/setting"
	"github.com/grafana/grafana/pkg/web"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func setupTestEnvironment(t *testing.T, cfg *setting.Cfg, features *featuremgmt.FeatureManager) (*web.Mux, *HTTPServer) {
	t.Helper()
	sqlstore.InitTestDB(t)
	cfg.IsFeatureToggleEnabled = features.IsEnabled

	{
		oldVersion := setting.BuildVersion
		oldCommit := setting.BuildCommit
		oldEnv := setting.Env
		t.Cleanup(func() {
			setting.BuildVersion = oldVersion
			setting.BuildCommit = oldCommit
			setting.Env = oldEnv
		})
	}

	sqlStore := sqlstore.InitTestDB(t)
	secretsService := secretsManager.SetupTestService(t, fakes.NewFakeSecretsStore())

	hs := &HTTPServer{
		Cfg:      cfg,
		Features: features,
		License:  &licensing.OSSLicensingService{Cfg: cfg},
		RenderService: &rendering.RenderingService{
			Cfg:                   cfg,
			RendererPluginManager: &fakeRendererManager{},
		},
		SQLStore:             sqlStore,
		SettingsProvider:     setting.ProvideProvider(cfg),
		pluginStore:          &plugins.FakePluginStore{},
		grafanaUpdateChecker: &updatechecker.GrafanaService{},
		AccessControl:        accesscontrolmock.New().WithDisabled(),
		PluginSettings:       pluginSettings.ProvideService(sqlStore, secretsService),
	}

	m := web.New()
	m.Use(getContextHandler(t, cfg).Middleware)
	m.UseMiddleware(web.Renderer(filepath.Join(setting.StaticRootPath, "views"), "[[", "]]"))
	m.Get("/api/frontend/settings/", hs.GetFrontendSettings)

	return m, hs
}

func TestHTTPServer_GetFrontendSettings_hideVersionAnonymous(t *testing.T) {
	type buildInfo struct {
		Version string `json:"version"`
		Commit  string `json:"commit"`
		Env     string `json:"env"`
	}
	type settings struct {
		BuildInfo buildInfo `json:"buildInfo"`
	}

	cfg := setting.NewCfg()
	cfg.Env = "testing"
	cfg.BuildVersion = "7.8.9"
	cfg.BuildCommit = "01234567"

	m, hs := setupTestEnvironment(t, cfg, featuremgmt.WithFeatures())

	req := httptest.NewRequest(http.MethodGet, "/api/frontend/settings", nil)

	// TODO: Remove
	setting.BuildVersion = cfg.BuildVersion
	setting.BuildCommit = cfg.BuildCommit
	setting.Env = cfg.Env

	tests := []struct {
		desc        string
		hideVersion bool
		expected    settings
	}{
		{
			desc:        "Not hiding version",
			hideVersion: false,
			expected: settings{
				BuildInfo: buildInfo{
					Version: setting.BuildVersion,
					Commit:  setting.BuildCommit,
					Env:     setting.Env,
				},
			},
		},
		{
			desc:        "Hiding version",
			hideVersion: true,
			expected: settings{
				BuildInfo: buildInfo{
					Version: "",
					Commit:  "",
					Env:     setting.Env,
				},
			},
		},
	}

	for _, test := range tests {
		t.Run(test.desc, func(t *testing.T) {
			hs.Cfg.AnonymousHideVersion = test.hideVersion
			expected := test.expected

			recorder := httptest.NewRecorder()
			m.ServeHTTP(recorder, req)
			got := settings{}
			err := json.Unmarshal(recorder.Body.Bytes(), &got)
			require.NoError(t, err)
			require.GreaterOrEqual(t, 400, recorder.Code, "status codes higher than 400 indicate a failure")

			assert.EqualValues(t, expected, got)
		})
	}
}