58 lines
1.7 KiB
C#
58 lines
1.7 KiB
C#
using Microsoft.Extensions.Logging;
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namespace AssetManager.Infrastructure.Services;
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/// <summary>
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/// Mock 汇率服务（占位实现，后续接入真实汇率源）
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/// </summary>
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public class MockExchangeRateService : IExchangeRateService
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{
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private readonly ILogger<MockExchangeRateService> _logger;
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// 固定的 Mock 汇率（以 2026 年初为基准）
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private readonly Dictionary<string, decimal> _mockRates = new()
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{
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{ "CNY-USD", 0.14m },
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{ "USD-CNY", 7.10m },
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{ "CNY-HKD", 1.09m },
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{ "HKD-CNY", 0.92m },
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{ "USD-HKD", 7.75m },
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{ "HKD-USD", 0.13m },
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{ "CNY-CNY", 1.00m },
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{ "USD-USD", 1.00m },
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{ "HKD-HKD", 1.00m }
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};
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public MockExchangeRateService(ILogger<MockExchangeRateService> logger)
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{
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_logger = logger;
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}
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public Task<decimal> GetExchangeRateAsync(string fromCurrency, string toCurrency)
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{
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_logger.LogInformation("Mock 获取汇率: {FromCurrency} -> {ToCurrency}", fromCurrency, toCurrency);
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string key = $"{fromCurrency}-{toCurrency}";
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if (_mockRates.TryGetValue(key, out decimal rate))
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{
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return Task.FromResult(rate);
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}
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// 默认返回 1（同币种或不支持的币种）
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return Task.FromResult(1.00m);
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}
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public Task<decimal> ConvertAmountAsync(decimal amount, string fromCurrency, string toCurrency)
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{
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_logger.LogInformation("Mock 转换金额: {Amount} {FromCurrency} -> {ToCurrency}", amount, fromCurrency, toCurrency);
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if (fromCurrency == toCurrency)
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{
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return Task.FromResult(amount);
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}
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return GetExchangeRateAsync(fromCurrency, toCurrency)
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.ContinueWith(t => amount * t.Result);
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}
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}
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