package jpush

import (
	"encoding/base64"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"

	"github.com/tinode/chat/server/push"
	"github.com/tinode/chat/server/store"
	"github.com/tinode/chat/server/store/types"
)

type testThirdPartyConfigStore map[string]string

func (s testThirdPartyConfigStore) Get(_ string, keys ...string) (map[string]string, error) {
	result := make(map[string]string, len(keys))
	for _, key := range keys {
		if value, ok := s[key]; ok {
			result[key] = value
		}
	}
	return result, nil
}

type testDevicePushTokenStore struct {
	devices map[types.Uid][]types.DeviceDef
}

func (s *testDevicePushTokenStore) Upsert(types.TenantID, *types.DevicePushToken) (*types.DevicePushToken, error) {
	return nil, nil
}

func (s *testDevicePushTokenStore) GetAllByProvider(types.TenantID, string, ...types.Uid) (map[types.Uid][]types.DeviceDef, int, error) {
	count := 0
	for _, devices := range s.devices {
		count += len(devices)
	}
	return s.devices, count, nil
}

func TestNormalizeConfigLoadsThirdPartyConfig(t *testing.T) {
	oldConfig := store.ThirdPartyConfig
	store.ThirdPartyConfig = testThirdPartyConfigStore{
		"jpush_enabled":             "1",
		"jpush_app_key":             "app-key",
		"jpush_master_secret":       "master",
		"jpush_api_domain":          "https://push.example.com/",
		"jpush_push_path":           "v3/push",
		"jpush_default_ttl_seconds": "123",
		"jpush_call_ttl_seconds":    "45",
		"jpush_use_alias":           "false",
		"jpush_classification":      "1",
	}
	defer func() { store.ThirdPartyConfig = oldConfig }()

	var config configType
	loadThirdPartyConfig(&config)
	config, err := normalizeConfig(config)
	if err != nil {
		t.Fatalf("normalize config: %v", err)
	}
	if !config.Enabled || config.AppKey != "app-key" || config.MasterSecret != "master" {
		t.Fatalf("unexpected credentials: %#v", config)
	}
	if config.APIDomain != "https://push.example.com" || config.PushPath != "/v3/push" {
		t.Fatalf("unexpected endpoint: %#v", config)
	}
	if config.DefaultTTLSeconds != 123 || config.CallTTLSeconds != 45 || config.UseAlias == nil || *config.UseAlias {
		t.Fatalf("unexpected ttl/use_alias: %#v", config)
	}
}

func TestPreparePayloadsUsesAliasAndNormalizesP2PTopic(t *testing.T) {
	caller := types.Uid(42)
	callee := types.Uid(43)
	topic := caller.P2PName(callee)
	config := &configType{Title: "MeetingIM", DefaultTTLSeconds: 86400, CallTTLSeconds: 60}
	payloads, uids := preparePayloads(&push.Receipt{
		TenantID: 7,
		To: map[types.Uid]push.Recipient{
			callee: {Unread: 3},
		},
		Payload: push.Payload{
			What:        push.ActMsg,
			Topic:       topic,
			From:        caller.UserId(),
			SeqId:       12,
			ContentType: "text/plain",
			Content:     map[string]any{"text": "hello"},
			Timestamp:   time.Date(2026, 9, 4, 10, 0, 0, 0, time.UTC),
		},
	}, config)
	if len(payloads) != 1 || len(uids) != 1 || uids[0] != callee {
		t.Fatalf("unexpected payload count: %d %#v", len(payloads), uids)
	}
	payload := payloads[0]
	if got := payload.Audience["alias"][0]; got != aliasForUid(callee) {
		t.Fatalf("unexpected alias: %s", got)
	}
	if got := payload.Notification.Android.Extras["topic"]; got != topic {
		t.Fatalf("topic was not kept canonical for callee: got %s want %s", got, topic)
	}
	if payload.Notification.IOS.Badge != "3" {
		t.Fatalf("unexpected badge: %s", payload.Notification.IOS.Badge)
	}
}

func TestAliasForUidUsesJPushSafeCharacters(t *testing.T) {
	uid := types.ParseUserId("usrd6Ag5opa-ww")
	if uid.IsZero() {
		t.Fatal("test user id did not parse")
	}
	if got, want := aliasForUid(uid), "usrd6Ag5opa.ww"; got != want {
		t.Fatalf("unexpected alias: got %s want %s", got, want)
	}
}

func TestPreparePayloadsCanUseRegistrationID(t *testing.T) {
	oldTokens := store.DevicePushTokens
	uid := types.Uid(42)
	store.DevicePushTokens = &testDevicePushTokenStore{devices: map[types.Uid][]types.DeviceDef{
		uid: {
			{DeviceId: "online-token", Platform: "ios"},
			{DeviceId: "offline-token", Platform: "android"},
		},
	}}
	defer func() { store.DevicePushTokens = oldTokens }()
	useAlias := false
	config := &configType{Title: "MeetingIM", DefaultTTLSeconds: 86400, CallTTLSeconds: 60, UseAlias: &useAlias}
	payloads, _ := preparePayloads(&push.Receipt{
		TenantID: 7,
		To: map[types.Uid]push.Recipient{
			uid: {Devices: []string{"online-token"}},
		},
		Payload: push.Payload{What: push.ActMsg, Topic: "grpTopic", SeqId: 9, Timestamp: time.Now()},
	}, config)
	if len(payloads) != 1 {
		t.Fatalf("unexpected payload count: %d", len(payloads))
	}
	got := payloads[0].Audience["registration_id"]
	if len(got) != 1 || got[0] != "offline-token" {
		t.Fatalf("unexpected registration ids: %#v", got)
	}
}

func TestPreparePayloadsDoesNotDropRecipientWithDeliveredSession(t *testing.T) {
	oldTokens := store.DevicePushTokens
	uid := types.Uid(42)
	store.DevicePushTokens = &testDevicePushTokenStore{devices: map[types.Uid][]types.DeviceDef{
		uid: {{DeviceId: "push-token", Platform: "ios"}},
	}}
	defer func() { store.DevicePushTokens = oldTokens }()
	useAlias := false
	config := &configType{Title: "MeetingIM", DefaultTTLSeconds: 86400, CallTTLSeconds: 60, UseAlias: &useAlias}
	payloads, _ := preparePayloads(&push.Receipt{
		TenantID: 7,
		To: map[types.Uid]push.Recipient{
			uid: {Delivered: 1},
		},
		Payload: push.Payload{What: push.ActMsg, Topic: "grpTopic", SeqId: 9, Timestamp: time.Now()},
	}, config)
	if len(payloads) != 1 {
		t.Fatalf("unexpected payload count: %d", len(payloads))
	}
	if payloads[0].Message == nil || payloads[0].Message.Extras["silent"] != "true" {
		t.Fatalf("expected silent payload for delivered recipient: %#v", payloads[0])
	}
}

func TestBuildPayloadUsesShortTTLForCalls(t *testing.T) {
	expiresAt := time.Now().Add(30 * time.Second).UTC().Format(time.RFC3339Nano)
	config := &configType{Title: "MeetingIM", DefaultTTLSeconds: 86400, CallTTLSeconds: 60}
	payload := buildPayload(map[string][]string{"alias": {"usr1"}}, "p2pTopic", map[string]string{
		"type":           "call_invite",
		"topic":          "p2pTopic",
		"seq":            "30",
		"call_type":      "audio",
		"caller_display": "张三",
		"expires_at":     expiresAt,
	}, 0, config)
	if payload.Options.TimeToLive > 30 {
		t.Fatalf("unexpected ttl: %d", payload.Options.TimeToLive)
	}
	if payload.Notification.Android.Title != "语音通话" {
		t.Fatalf("unexpected title: %s", payload.Notification.Android.Title)
	}
	if payload.Notification.IOS.Category != callCategory {
		t.Fatalf("unexpected iOS category: %s", payload.Notification.IOS.Category)
	}
	if payload.Notification.IOS.ContentAvailable != 1 {
		t.Fatalf("unexpected iOS content-available: %d", payload.Notification.IOS.ContentAvailable)
	}
	if payload.Notification.IOS.Alert.Body != "张三邀请你语音通话" {
		t.Fatalf("unexpected body: %s", payload.Notification.IOS.Alert.Body)
	}
}

func TestPushDataExtractsCallFields(t *testing.T) {
	expiresAt := time.Date(2026, 9, 4, 10, 0, 30, 0, time.UTC)
	data, err := pushData(push.Payload{
		What:      push.ActMsg,
		Topic:     "p2pTopic",
		From:      "usrCaller",
		SeqId:     30,
		Webrtc:    "started",
		ExpiresAt: &expiresAt,
		Content: map[string]any{
			"callId":         "call_1",
			"callType":       "audio",
			"caller_display": "张三",
		},
		Timestamp: time.Date(2026, 9, 4, 10, 0, 0, 0, time.UTC),
	})
	if err != nil {
		t.Fatalf("push data: %v", err)
	}
	if data["type"] != "call_invite" || data["call_id"] != "call_1" || data["call_type"] != "audio" || data["caller_id"] != "usrCaller" {
		t.Fatalf("unexpected call data: %#v", data)
	}
	if data["expires_at"] != expiresAt.Format(time.RFC3339Nano) {
		t.Fatalf("unexpected expires_at: %#v", data)
	}
	if data["caller_display"] != "张三" {
		t.Fatalf("unexpected caller_display: %#v", data)
	}
}

func TestPreparePayloadsDropsExpiredCallInvite(t *testing.T) {
	uid := types.Uid(42)
	expiresAt := time.Now().Add(-time.Second)
	config := &configType{Title: "MeetingIM", DefaultTTLSeconds: 86400, CallTTLSeconds: 30}
	payloads, uids := preparePayloads(&push.Receipt{
		TenantID: 7,
		To: map[types.Uid]push.Recipient{
			uid: {},
		},
		Payload: push.Payload{
			What:      push.ActMsg,
			Topic:     "p2pTopic",
			SeqId:     30,
			Webrtc:    "started",
			ExpiresAt: &expiresAt,
			Timestamp: time.Now().Add(-time.Minute),
		},
	}, config)
	if len(payloads) != 0 || len(uids) != 0 {
		t.Fatalf("expired call invite should be dropped: payloads=%d uids=%#v", len(payloads), uids)
	}
}

func TestSendPayloadUsesBasicAuth(t *testing.T) {
	var gotAuth string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotAuth = r.Header.Get("Authorization")
		if r.URL.Path != "/v3/push" {
			t.Fatalf("unexpected path: %s", r.URL.Path)
		}
		var payload jpushPayload
		if err := json.NewDecoder(r.Body).Decode(&payload); err != nil {
			t.Fatalf("decode payload: %v", err)
		}
		if payload.Audience["alias"][0] != "usr1" {
			t.Fatalf("unexpected audience: %#v", payload.Audience)
		}
		w.WriteHeader(http.StatusOK)
		w.Write([]byte(`{"sendno":"0","msg_id":"1"}`))
	}))
	defer srv.Close()
	config := &configType{AppKey: "key", MasterSecret: "secret", APIDomain: srv.URL, PushPath: "/v3/push"}
	err := sendPayload(&jpushPayload{
		Platform: "all",
		Audience: map[string][]string{"alias": {"usr1"}},
		Message:  &jpushMessage{MsgContent: "hello"},
		Options:  jpushOptions{TimeToLive: 60},
	}, config, srv.Client())
	if err != nil {
		t.Fatalf("send payload: %v", err)
	}
	wantAuth := "Basic " + base64.StdEncoding.EncodeToString([]byte("key:secret"))
	if gotAuth != wantAuth {
		t.Fatalf("unexpected auth: got %s want %s", gotAuth, wantAuth)
	}
}