package warningnotify

import (
	"context"
	"errors"
	"testing"

	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/consts"
)

type failureRecordingSender struct{ calls int }

func (sender *failureRecordingSender) Send(ctx context.Context, batch Batch) error {
	sender.calls++
	return errors.New("send failed")
}

func TestDispatchContinuesAfterDeliveryFailure(t *testing.T) {
	sender := &failureRecordingSender{}
	restore := SetSender(sender)
	defer restore()
	events := []Event{{TenantID: "tenant", ItemType: 1, ItemCode: "card", Category: "traffic", WarnMethods: MethodEmail, WarnEmails: "xxx@example.com", AppNotifyEnabled: true}}
	expected := len(BuildBatches(events))
	if expected < 2 {
		t.Fatal("expected multiple channels")
	}
	if err := Dispatch(context.Background(), events); err == nil {
		t.Fatal("failure must propagate")
	}
	if sender.calls != expected {
		t.Fatalf("calls=%d expected=%d", sender.calls, expected)
	}
}

func TestBuildBatchesOnlyCreatesPlatformAndConfiguredChannels(t *testing.T) {
	batches := BuildBatches([]Event{{
		Business:         BusinessSimWarning,
		TenantID:         "tenant",
		ItemCode:         "card-1",
		WarnMethods:      MethodEmail,
		WarnEmails:       "xxx@example.com",
		AppNotifyEnabled: false,
	}})

	methods := make(map[string]bool, len(batches))
	for _, batch := range batches {
		methods[batch.Method] = true
	}

	for _, method := range []string{MethodPlatform, MethodEmail} {
		if !methods[method] {
			t.Errorf("expected %q batch to be generated", method)
		}
	}
	if methods[MethodWechat] {
		t.Error("wechat subscription batch must not be generated")
	}
}

func TestBuildBatchesIgnoresLegacyWechatFlag(t *testing.T) {
	for _, enabled := range []bool{false, true} {
		for _, business := range []string{BusinessSimWarning, BusinessTrafficCutoff} {
			batches := BuildBatches([]Event{{
				Business:         business,
				TenantID:         "tenant",
				ItemCode:         "card-1",
				AppNotifyEnabled: enabled,
			}})
			if len(batches) != 1 || batches[0].Method != MethodPlatform {
				t.Errorf("business=%q enabled=%t: expected platform only, got %+v", business, enabled, batches)
			}
		}
	}
}

func TestEnterpriseWarningRecipientEligibility(t *testing.T) {
	if !enterpriseWarningRecipientEligible(consts.SysUserTypeSys, 175, 175, "") {
		t.Fatal("same-organization enterprise creator should be eligible")
	}
	for _, test := range []struct {
		name       string
		userType   string
		userDeptID int64
		cardDeptID int64
	}{
		{name: "app user", userType: consts.SysUserTypeAPP, userDeptID: 175, cardDeptID: 175},
		{name: "different organization", userType: consts.SysUserTypeSys, userDeptID: 176, cardDeptID: 175},
		{name: "missing organization", userType: consts.SysUserTypeSys, userDeptID: 0, cardDeptID: 175},
	} {
		t.Run(test.name, func(t *testing.T) {
			if enterpriseWarningRecipientEligible(test.userType, test.userDeptID, test.cardDeptID, "") {
				t.Fatal("recipient should not be eligible")
			}
		})
	}
}
func TestEnterpriseWarningAncestorScope(t *testing.T) {
	for _, test := range []struct {
		name      string
		ancestors string
		expected  bool
	}{
		{"direct descendant", "0,100,175,", true},
		{"deep descendant", "0,100,175,185", true},
		{"whitespace", "0, 175 ,185", true},
		{"partial identifier", "0,100,1175,1750", false},
		{"unrelated branch", "0,100,176", false},
		{"missing path", "", false},
	} {
		t.Run(test.name, func(t *testing.T) {
			if actual := enterpriseWarningRecipientEligible(consts.SysUserTypeSys, 175, 195, test.ancestors); actual != test.expected {
				t.Fatalf("eligible = %v, want %v", actual, test.expected)
			}
		})
	}
}

func TestWechatTokenInvalidCodes(t *testing.T) {
	for _, code := range []int{40001, 40014, 42001} {
		if !warningWechatTokenInvalid(code) {
			t.Fatalf("code %d must refresh token", code)
		}
	}
	for _, code := range []int{0, 43101, 47003, 40003} {
		if warningWechatTokenInvalid(code) {
			t.Fatalf("code %d must not refresh token", code)
		}
	}
}

func TestWechatDefaultTemplateMatchesMiniProgram(t *testing.T) {
	const expected = "DMDP2PKktdtG1ES_3Ic1JcR0LGELQmWE6LunYyerHCY"
	if actual := wechatTemplateID(nil, consts.WarningWechatTemplateIDDefault); actual != expected {
		t.Fatalf("default template = %q, expected %q", actual, expected)
	}
}

func TestTrafficCutoffPlatformRecipientsExcludeCreator(t *testing.T) {
	got := platformAgentRecipientIDs(BusinessTrafficCutoff, []int64{130}, 1)
	if len(got) != 1 || got[0] != 130 {
		t.Fatalf("traffic cutoff recipients = %v, want [130] without admin creator 1", got)
	}
}

func TestOtherPlatformRecipientsRetainCreator(t *testing.T) {
	got := platformAgentRecipientIDs(BusinessSimWarning, []int64{130}, 1)
	if len(got) != 2 || got[0] != 130 || got[1] != 1 {
		t.Fatalf("regular warning recipients = %v, want [130 1]", got)
	}
}