添加信用额度功能：在账户模型中新增信用额度字段，更新相关请求和响应结构，修改账户创建和修改逻辑，更新界面以支持信用额度的显示和编辑。

pkg/api/accounts.go

@@ -713,6 +713,9 @@ func (a *AccountsApi) createNewAccountModel(uid int64, accountCreateReq *models.
 
 	if !isSubAccount && accountCreateReq.Category == models.ACCOUNT_CATEGORY_CREDIT_CARD {
 		accountExtend.CreditCardStatementDate = &accountCreateReq.CreditCardStatementDate
+		if accountCreateReq.CreditLimit > 0 {
+			accountExtend.CreditLimit = &accountCreateReq.CreditLimit
+		}
 	}
 
 	return &models.Account{
@@ -769,6 +772,9 @@ func (a *AccountsApi) getToUpdateAccount(uid int64, accountModifyReq *models.Acc
 
 	if !isSubAccount && accountModifyReq.Category == models.ACCOUNT_CATEGORY_CREDIT_CARD {
 		newAccountExtend.CreditCardStatementDate = &accountModifyReq.CreditCardStatementDate
+		if accountModifyReq.CreditLimit > 0 {
+			newAccountExtend.CreditLimit = &accountModifyReq.CreditLimit
+		}
 	}
 
 	newAccount := &models.Account{
@@ -804,6 +810,12 @@ func (a *AccountsApi) getToUpdateAccount(uid int64, accountModifyReq *models.Acc
 		return newAccount
 	}
 
+	if newAccountExtend.CreditLimit != oldAccountExtend.CreditLimit {
+		if newAccountExtend.CreditLimit == nil || oldAccountExtend.CreditLimit == nil || *newAccountExtend.CreditLimit != *oldAccountExtend.CreditLimit {
+			return newAccount
+		}
+	}
+
 	return nil
 }
 

pkg/models/account.go

@@ -90,7 +90,8 @@ type Account struct {
 
 // AccountExtend represents account extend data stored in database
 type AccountExtend struct {
-	CreditCardStatementDate *int `json:"creditCardStatementDate"`
+	CreditCardStatementDate *int   `json:"creditCardStatementDate"`
+	CreditLimit             *int64 `json:"creditLimit"`
 }
 
 // AccountCreateRequest represents all parameters of account creation request
@@ -105,6 +106,7 @@ type AccountCreateRequest struct {
 	BalanceTime             int64                   `json:"balanceTime"`
 	Comment                 string                  `json:"comment" binding:"max=255"`
 	CreditCardStatementDate int                     `json:"creditCardStatementDate" binding:"min=0,max=28"`
+	CreditLimit             int64                   `json:"creditLimit" binding:"min=0"`
 	SubAccounts             []*AccountCreateRequest `json:"subAccounts" binding:"omitempty"`
 	ClientSessionId         string                  `json:"clientSessionId"`
 }
@@ -121,6 +123,7 @@ type AccountModifyRequest struct {
 	BalanceTime             *int64                  `json:"balanceTime" binding:"omitempty"`
 	Comment                 string                  `json:"comment" binding:"max=255"`
 	CreditCardStatementDate int                     `json:"creditCardStatementDate" binding:"min=0,max=28"`
+	CreditLimit             int64                   `json:"creditLimit" binding:"min=0"`
 	Hidden                  bool                    `json:"hidden"`
 	SubAccounts             []*AccountModifyRequest `json:"subAccounts" binding:"omitempty"`
 	ClientSessionId         string                  `json:"clientSessionId"`
@@ -171,6 +174,7 @@ type AccountInfoResponse struct {
 	Balance                 int64                    `json:"balance"`
 	Comment                 string                   `json:"comment"`
 	CreditCardStatementDate *int                     `json:"creditCardStatementDate,omitempty"`
+	CreditLimit             *int64                   `json:"creditLimit,omitempty"`
 	DisplayOrder            int32                    `json:"displayOrder"`
 	IsAsset                 bool                     `json:"isAsset,omitempty"`
 	IsLiability             bool                     `json:"isLiability,omitempty"`
@@ -181,10 +185,14 @@ type AccountInfoResponse struct {
 // ToAccountInfoResponse returns a view-object according to database model
 func (a *Account) ToAccountInfoResponse() *AccountInfoResponse {
 	var creditCardStatementDate *int
+	var creditLimit *int64
 
 	if a.ParentAccountId == LevelOneAccountParentId && a.Category == ACCOUNT_CATEGORY_CREDIT_CARD {
 		if a.Extend != nil {
 			creditCardStatementDate = a.Extend.CreditCardStatementDate
+			if a.Extend.CreditLimit != nil && *a.Extend.CreditLimit > 0 {
+				creditLimit = a.Extend.CreditLimit
+			}
 		} else {
 			creditCardStatementDate = &defaultCreditCardAccountStatementDate
 		}
@@ -202,6 +210,7 @@ func (a *Account) ToAccountInfoResponse() *AccountInfoResponse {
 		Balance:                 a.Balance,
 		Comment:                 a.Comment,
 		CreditCardStatementDate: creditCardStatementDate,
+		CreditLimit:             creditLimit,
 		DisplayOrder:            a.DisplayOrder,
 		IsAsset:                 assetAccountCategory[a.Category],
 		IsLiability:             liabilityAccountCategory[a.Category],

src/locales/en.json

@@ -1860,6 +1860,8 @@
     "Balance Time": "Balance Time",
     "Sub-account Balance Time": "Sub-account Balance Time",
     "Statement Date": "Statement Date",
+    "Credit Limit": "Credit Limit",
+    "Available": "Available",
     "Description": "Description",
     "Your account description (optional)": "Your account description (optional)",
     "Your sub-account description (optional)": "Your sub-account description (optional)",

src/locales/zh_Hans.json

@@ -1860,6 +1860,8 @@
     "Balance Time": "余额时间",
     "Sub-account Balance Time": "子账户余额时间",
     "Statement Date": "账单日",
+    "Credit Limit": "信用额度",
+    "Available": "可用额度",
     "Description": "描述",
     "Your account description (optional)": "你的账户描述 (可选)",
     "Your sub-account description (optional)": "你的子账户描述 (可选)",

src/models/account.ts

@@ -17,6 +17,7 @@ export class Account implements AccountInfoResponse {
     public balanceTime?: number;
     public comment: string;
     public creditCardStatementDate?: number;
+    public creditLimit?: number;
     public displayOrder: number;
     public visible: boolean;
     public subAccounts?: Account[];
@@ -24,7 +25,7 @@ export class Account implements AccountInfoResponse {
     private readonly _isAsset?: boolean;
     private readonly _isLiability?: boolean;
 
-    protected constructor(id: string, name: string, parentId: string, category: number, type: number, icon: string, color: string, currency: string, balance: number, comment: string, displayOrder: number, visible: boolean, balanceTime?: number, creditCardStatementDate?: number, isAsset?: boolean, isLiability?: boolean, subAccounts?: Account[]) {
+    protected constructor(id: string, name: string, parentId: string, category: number, type: number, icon: string, color: string, currency: string, balance: number, comment: string, displayOrder: number, visible: boolean, balanceTime?: number, creditCardStatementDate?: number, isAsset?: boolean, isLiability?: boolean, subAccounts?: Account[], creditLimit?: number) {
         this.id = id;
         this.name = name;
         this.parentId = parentId;
@@ -39,6 +40,7 @@ export class Account implements AccountInfoResponse {
         this.displayOrder = displayOrder;
         this.visible = visible;
         this.creditCardStatementDate = creditCardStatementDate;
+        this.creditLimit = creditLimit;
         this._isAsset = isAsset;
         this._isLiability = isLiability;
 
@@ -95,7 +97,8 @@ export class Account implements AccountInfoResponse {
             this.comment === other.comment &&
             this.displayOrder === other.displayOrder &&
             this.visible === other.visible &&
-            this.creditCardStatementDate === other.creditCardStatementDate;
+            this.creditCardStatementDate === other.creditCardStatementDate &&
+            this.creditLimit === other.creditLimit;
 
         if (!isEqual) {
             return false;
@@ -130,6 +133,7 @@ export class Account implements AccountInfoResponse {
         this.balanceTime = other.balanceTime;
         this.comment = other.comment;
         this.creditCardStatementDate = other.creditCardStatementDate;
+        this.creditLimit = other.creditLimit;
         this.visible = other.visible;
     }
 
@@ -181,6 +185,7 @@ export class Account implements AccountInfoResponse {
             balanceTime: (parentAccount || this.type === AccountType.SingleAccount.type) && this.balanceTime ? this.balanceTime : 0,
             comment: this.comment,
             creditCardStatementDate: !parentAccount && this.category === AccountCategory.CreditCard.type ? this.creditCardStatementDate : undefined,
+            creditLimit: !parentAccount && this.category === AccountCategory.CreditCard.type ? (this.creditLimit ?? 0) : undefined,
             subAccounts: !parentAccount ? subAccountCreateRequests : undefined,
             clientSessionId: !parentAccount ? clientSessionId : undefined
         };
@@ -214,6 +219,7 @@ export class Account implements AccountInfoResponse {
             balanceTime: parentAccount && (!this.id || this.id === '0') ? this.balanceTime : undefined,
             comment: this.comment,
             creditCardStatementDate: !parentAccount && this.category === AccountCategory.CreditCard.type ? this.creditCardStatementDate : undefined,
+            creditLimit: !parentAccount && this.category === AccountCategory.CreditCard.type ? (this.creditLimit ?? 0) : undefined,
             hidden: !this.visible,
             subAccounts: !parentAccount ? subAccountModifyRequests : undefined,
             clientSessionId: !parentAccount ? clientSessionId : undefined
@@ -365,7 +371,9 @@ export class Account implements AccountInfoResponse {
             this.balanceTime,
             this.creditCardStatementDate,
             this.isAsset,
-            this.isLiability
+            this.isLiability,
+            undefined,
+            this.creditLimit
         );
     }
 
@@ -387,7 +395,9 @@ export class Account implements AccountInfoResponse {
             this.creditCardStatementDate,
             this.isAsset,
             this.isLiability,
-            typeof(this.subAccounts) !== 'undefined' ? Account.cloneAccounts(this.subAccounts) : undefined);
+            typeof(this.subAccounts) !== 'undefined' ? Account.cloneAccounts(this.subAccounts) : undefined,
+            this.creditLimit
+        );
     }
 
     public createNewSubAccount(currency: string, balanceTime: number): Account {
@@ -446,7 +456,8 @@ export class Account implements AccountInfoResponse {
             accountResponse.creditCardStatementDate,
             accountResponse.isAsset,
             accountResponse.isLiability,
-            accountResponse.subAccounts ? Account.ofMulti(accountResponse.subAccounts) : undefined
+            accountResponse.subAccounts ? Account.ofMulti(accountResponse.subAccounts) : undefined,
+            accountResponse.creditLimit
         );
     }
 
@@ -560,7 +571,8 @@ export class AccountWithDisplayBalance extends Account {
             account.creditCardStatementDate,
             account.isAsset,
             account.isLiability,
-            account.subAccounts
+            account.subAccounts,
+            account.creditLimit
         );
 
         this.displayBalance = displayBalance;
@@ -582,6 +594,7 @@ export interface AccountCreateRequest {
     readonly balanceTime: number;
     readonly comment: string;
     readonly creditCardStatementDate?: number;
+    readonly creditLimit?: number;
     readonly subAccounts?: AccountCreateRequest[];
     readonly clientSessionId?: string;
 }
@@ -597,6 +610,7 @@ export interface AccountModifyRequest {
     readonly balanceTime?: number;
     readonly comment: string;
     readonly creditCardStatementDate?: number;
+    readonly creditLimit?: number;
     readonly hidden: boolean;
     readonly subAccounts?: AccountModifyRequest[];
     readonly clientSessionId?: string;
@@ -614,6 +628,7 @@ export interface AccountInfoResponse {
     readonly balance: number;
     readonly comment: string;
     readonly creditCardStatementDate?: number;
+    readonly creditLimit?: number;
     readonly displayOrder: number;
     readonly isAsset?: boolean;
     readonly isLiability?: boolean;

src/views/mobile/accounts/EditPage.vue

@@ -201,6 +201,24 @@
                 </list-item-selection-popup>
             </f7-list-item>
 
+            <f7-list-item
+                link="#" no-chevron
+                class="list-item-with-header-and-title"
+                :header="tt('Credit Limit')"
+                :title="formatCreditLimitDisplay(account)"
+                v-if="isAccountSupportCreditCardStatementDate"
+                @click="accountContext.showCreditLimitSheet = true"
+            >
+                <number-pad-sheet :min-value="0"
+                                  :max-value="TRANSACTION_MAX_AMOUNT"
+                                  :currency="account.currency"
+                                  :flip-negative="false"
+                                  v-model:show="accountContext.showCreditLimitSheet"
+                                  :model-value="account.creditLimit ?? 0"
+                                  @update:model-value="account.creditLimit = $event > 0 ? $event : undefined"
+                ></number-pad-sheet>
+            </f7-list-item>
+
             <f7-list-item
                 link="#" no-chevron
                 class="list-item-with-header-and-title"
@@ -334,6 +352,24 @@
                 </list-item-selection-popup>
             </f7-list-item>
 
+            <f7-list-item
+                link="#" no-chevron
+                class="list-item-with-header-and-title"
+                :header="tt('Credit Limit')"
+                :title="formatCreditLimitDisplay(account)"
+                v-if="isAccountSupportCreditCardStatementDate"
+                @click="accountContext.showCreditLimitSheet = true"
+            >
+                <number-pad-sheet :min-value="0"
+                                  :max-value="TRANSACTION_MAX_AMOUNT"
+                                  :currency="account.currency"
+                                  :flip-negative="false"
+                                  v-model:show="accountContext.showCreditLimitSheet"
+                                  :model-value="account.creditLimit ?? 0"
+                                  @update:model-value="account.creditLimit = $event > 0 ? $event : undefined"
+                ></number-pad-sheet>
+            </f7-list-item>
+
             <f7-list-item :title="tt('Visible')" v-if="editAccountId">
                 <f7-toggle :checked="account.visible" @toggle:change="account.visible = $event"></f7-toggle>
             </f7-list-item>
@@ -550,6 +586,7 @@ interface AccountContext {
     showColorSelectionSheet: boolean;
     showCurrencyPopup: boolean;
     showCreditCardStatementDatePopup: boolean;
+    showCreditLimitSheet: boolean;
     showBalanceSheet: boolean;
     showBalanceDateTimeSheet: boolean;
     balanceDateTimeSheetMode: string;
@@ -600,6 +637,7 @@ const DEFAULT_ACCOUNT_CONTEXT: AccountContext = {
     showColorSelectionSheet: false,
     showCurrencyPopup: false,
     showCreditCardStatementDatePopup: false,
+    showCreditLimitSheet: false,
     showBalanceSheet: false,
     showBalanceDateTimeSheet: false,
     balanceDateTimeSheetMode: 'time'
@@ -621,6 +659,13 @@ function formatAccountDisplayBalance(selectedAccount: Account): string {
     return formatAmountToLocalizedNumeralsWithCurrency(balance, selectedAccount.currency);
 }
 
+function formatCreditLimitDisplay(selectedAccount: Account): string {
+    if (!selectedAccount.creditLimit) {
+        return tt('Not set');
+    }
+    return formatAmountToLocalizedNumeralsWithCurrency(selectedAccount.creditLimit, selectedAccount.currency);
+}
+
 function formatAccountBalanceDate(account: Account): string {
     if (!isDefined(account.balanceTime)) {
         return '';

src/views/mobile/accounts/ListPage.vue

@@ -113,6 +113,7 @@
                             <div class="nested-list-item-title">
                                 <span>{{ account.name }}</span>
                                 <div class="item-footer" v-if="account.comment">{{ account.comment }}</div>
+                                <div class="item-footer" v-if="account.creditLimit">{{ tt('Available') }}: {{ getRemainingCredit(account) }}</div>
                             </div>
                             <div class="nested-list-item-after" v-if="account.type === AccountType.MultiSubAccounts.type">
                                 <span>{{ accountBalance(account) }}</span>
@@ -241,7 +242,7 @@ const props = defineProps<{
     f7router: Router.Router;
 }>();
 
-const { tt, getCurrentLanguageTextDirection } = useI18n();
+const { tt, getCurrentLanguageTextDirection, formatAmountToLocalizedNumeralsWithCurrency } = useI18n();
 const { showAlert, showToast, routeBackOnError } = useI18nUIComponents();
 
 const {
@@ -288,6 +289,14 @@ const noAvailableAccount = computed<boolean>(() => {
     }
 });
 
+function getRemainingCredit(account: Account): string {
+    if (!account.creditLimit) {
+        return '';
+    }
+    const remaining = account.creditLimit + account.balance; // balance is negative for credit cards
+    return formatAmountToLocalizedNumeralsWithCurrency(remaining, account.currency);
+}
+
 function hasAccount(accountCategory: AccountCategory, visibleOnly: boolean): boolean {
     return accountsStore.hasAccount(accountCategory, visibleOnly);
 }