Implement bank transfer app flows

Thijooree iOS/API/Models/BankModels.swift

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+import Foundation
+
+// MARK: - Unified bank data models
+// These aggregate MIB, BML, and Fahipay responses into a common schema.
+// All types are Codable for cache serialisation and Hashable for use in SwiftUI ForEach.
+
+struct BankAccount: Identifiable, Codable, Hashable {
+    let id: String               // Synthetic: "\(bank)_\(accountNumber)_\(loginTag)"
+    let bank: String             // "MIB" | "BML" | "FAHIPAY"
+    let profileName: String
+    let profileType: String
+    let productCode: String
+    let accountNumber: String
+    let accountBriefName: String
+    let currencyName: String     // "MVR" | "USD" | ...
+    let accountTypeName: String
+    let availableBalance: Double
+    let currentBalance: Double
+    let blockedAmount: Double
+    let mvrBalance: Double?      // Converted balance when currency != MVR
+    let statusDesc: String
+    let profileImageHash: String?
+    let loginTag: String         // loginId that owns this account
+    let profileId: String?
+    let internalId: String?
+
+    var isActive: Bool {
+        statusDesc.lowercased().contains("active")
+    }
+
+    var formattedAvailableBalance: String {
+        "\(currencyName) \(Self.balanceFormatter.string(from: NSNumber(value: availableBalance)) ?? "0.00")"
+    }
+
+    private static let balanceFormatter: NumberFormatter = {
+        let f = NumberFormatter()
+        f.numberStyle = .decimal
+        f.minimumFractionDigits = 2
+        f.maximumFractionDigits = 2
+        return f
+    }()
+}
+
+struct BankContact: Identifiable, Codable, Hashable {
+    let id: String               // Unique composite across banks
+    let benefNo: String
+    let benefName: String
+    let benefNickName: String?
+    let benefAccount: String
+    let benefType: String        // "MIB" | "LOCAL" | "SWIFT" | "BML" | "FAHIPAY"
+    let bankColor: String?
+    let benefBankName: String?
+    let bankCode: String?
+    let benefStatus: String
+    let transferCyDesc: String?
+    let customerImgHash: String?
+    let benefCategoryId: String?
+    let profileId: String?
+    let source: String           // "MIB" | "BML" | "FAHIPAY"
+
+    var displayName: String {
+        if let nick = benefNickName, !nick.isEmpty { return nick }
+        return benefName
+    }
+}
+
+struct BankTransaction: Identifiable, Codable, Hashable {
+    let id: String
+    let date: Date
+    let description: String
+    let amount: Double           // Positive = credit, negative = debit
+    let currency: String
+    let counterpartyName: String?
+    let reference: String?
+    let accountNumber: String
+    let accountDisplayName: String
+    let source: String           // "MIB" | "BML" | "BML_CARD" | "FAHIPAY"
+    let iconUrl: String?
+
+    var isCredit: Bool { amount >= 0 }
+
+    var formattedAmount: String {
+        let sign = isCredit ? "+" : "-"
+        let abs = Self.amountFormatter.string(from: NSNumber(value: Swift.abs(amount))) ?? "0.00"
+        return "\(sign) \(currency) \(abs)"
+    }
+
+    private static let amountFormatter: NumberFormatter = {
+        let f = NumberFormatter()
+        f.numberStyle = .decimal
+        f.minimumFractionDigits = 2
+        f.maximumFractionDigits = 2
+        return f
+    }()
+}
+
+struct BankContactCategory: Identifiable, Codable, Hashable {
+    let id: String
+    let categoryName: String
+    let numBenef: Int
+    let source: String           // "MIB" | "FAHIPAY"
+}
+
+struct BankNotification: Identifiable, Codable, Hashable {
+    let id: String
+    let title: String
+    let body: String
+    let date: Date
+    var isRead: Bool
+    let source: String
+}
+
+// MARK: - Transfer
+
+struct TransferResult: Codable {
+    let success: Bool
+    let transactionId: String?
+    let reference: String?
+    let date: Date?
+    let errorMessage: String?
+}
+
+struct TransferReceiptData: Sendable, Equatable {
+    let fromAccountNumber: String
+    let fromBankName: String
+    let toAccountNumber: String
+    let toAccountName: String
+    let amount: Double
+    let currency: String
+    let reference: String
+    let date: String
+    let message: String
+}
+
+struct RecentPick: Identifiable, Codable, Hashable {
+    let id: String
+    let benefName: String
+    let benefAccount: String
+    let transferNetwork: String  // TransferNetwork.rawValue
+    let bankName: String?
+    let lastUsed: Date
+}
+
+// MARK: - Connectivity
+
+enum ConnectivityError: String, CaseIterable, Codable {
+    case noInternet = "NO_INTERNET"
+    case mib        = "MIB"
+    case bml        = "BML"
+    case fahipay    = "FAHIPAY"
+}