package service

import (
	"fmt"
	"strings"
	"testing"

	"affiliate_dash/internal/model"
)

func TestCreateAPIClientEnforcesPerMerchantLimit(t *testing.T) {
	db := newServiceTestDB(t)
	codec, err := NewSecretCodec("test-master-key")
	if err != nil {
		t.Fatalf("codec: %v", err)
	}
	svc := NewMerchantService(db, codec, NewTenantService(db))
	merchant := model.Merchant{Code: "merchant-api-limit", Name: "限数商户", Status: model.MerchantStatusActive}
	if err := db.Create(&merchant).Error; err != nil {
		t.Fatalf("create merchant: %v", err)
	}
	for i := 0; i < MaxAPIClientsPerMerchant; i++ {
		if _, err := svc.CreateAPIClient(merchant.ID, CreateAPIClientInput{
			Name:   fmt.Sprintf("key-%d", i),
			Scopes: "products:read",
		}, 1); err != nil {
			t.Fatalf("create client %d: %v", i, err)
		}
	}
	_, err = svc.CreateAPIClient(merchant.ID, CreateAPIClientInput{
		Name:   "overflow",
		Scopes: "products:read",
	}, 1)
	if err == nil || !strings.Contains(err.Error(), fmt.Sprintf("最多可创建 %d 个", MaxAPIClientsPerMerchant)) {
		t.Fatalf("expected per-merchant limit error, got %v", err)
	}
}

func TestMerchantCustomRoleIsScopedAndCanCreateEmployee(t *testing.T) {
	db := newServiceTestDB(t)
	merchantA := model.Merchant{Code: "team-merchant-a", Name: "团队商户 A", Status: model.MerchantStatusActive}
	merchantB := model.Merchant{Code: "team-merchant-b", Name: "团队商户 B", Status: model.MerchantStatusActive}
	actor := model.User{Username: "team-owner", PasswordHash: "hash", Role: model.RoleMerchant, Status: 1}
	if err := db.Create(&merchantA).Error; err != nil {
		t.Fatalf("create merchant A: %v", err)
	}
	if err := db.Create(&merchantB).Error; err != nil {
		t.Fatalf("create merchant B: %v", err)
	}
	if err := db.Create(&actor).Error; err != nil {
		t.Fatalf("create actor: %v", err)
	}

	svc := NewMerchantService(db, nil, NewTenantService(db))
	role, err := svc.CreateRole(merchantA.ID, MerchantRoleInput{
		Code:        "after-sales",
		Name:        "客服",
		Permissions: []string{model.PermissionOrdersManage},
	}, actor.ID)
	if err != nil {
		t.Fatalf("create custom role: %v", err)
	}

	member, err := svc.AddMember(merchantA.ID, AddMemberInput{
		Username: "merchant-a-support",
		Password: "password123",
		Nickname: "客服小李",
		Role:     role.Code,
	}, actor.ID)
	if err != nil {
		t.Fatalf("create employee: %v", err)
	}
	if member.User == nil || member.User.Username != "merchant-a-support" || member.Role != "after-sales" {
		t.Fatalf("unexpected member: %+v", member)
	}
	if !member.IsDefault {
		t.Fatal("new employee should default to the merchant that created it")
	}

	if _, err := svc.AddMember(merchantB.ID, AddMemberInput{
		Username: "merchant-b-support",
		Password: "password123",
		Role:     role.Code,
	}, actor.ID); err == nil {
		t.Fatal("expected merchant A role to be rejected for merchant B")
	}
}

func TestDefaultMerchantRolesCanBeEdited(t *testing.T) {
	db := newServiceTestDB(t)
	merchant := model.Merchant{Code: "default-roles", Name: "默认角色商户", Status: model.MerchantStatusActive}
	actor := model.User{Username: "default-role-owner", PasswordHash: "hash", Role: model.RoleMerchant, Status: 1}
	if err := db.Create(&merchant).Error; err != nil {
		t.Fatalf("create merchant: %v", err)
	}
	if err := db.Create(&actor).Error; err != nil {
		t.Fatalf("create actor: %v", err)
	}
	if err := createDefaultMerchantRoles(db, merchant.ID); err != nil {
		t.Fatalf("create default roles: %v", err)
	}

	svc := NewMerchantService(db, nil, NewTenantService(db))
	roles, err := svc.ListRoles(merchant.ID)
	if err != nil {
		t.Fatalf("list roles: %v", err)
	}
	var finance model.MerchantRole
	var hasSupport bool
	for _, role := range roles {
		if role.Code == model.MemberRoleFinance {
			finance = role
		}
		if role.Code == "support" && role.Name == "客服" {
			hasSupport = true
		}
	}
	if finance.ID == 0 || !hasSupport {
		t.Fatalf("expected editable finance and support roles, got %+v", roles)
	}
	updated, err := svc.UpdateRole(merchant.ID, finance.ID, MerchantRoleInput{
		Name:        "财务主管",
		Permissions: []string{model.PermissionWalletView},
	}, actor.ID)
	if err != nil {
		t.Fatalf("update finance role: %v", err)
	}
	if updated.Name != "财务主管" || updated.Permissions != model.PermissionWalletView {
		t.Fatalf("unexpected updated role: %+v", updated)
	}
}