52 lines
1.8 KiB
C#
52 lines
1.8 KiB
C#
using System.Security.Cryptography;
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using System.Text;
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using DysonNetwork.Shared.Cache;
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using DysonNetwork.Shared.Proto;
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using Microsoft.AspNetCore.Authorization;
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using Microsoft.AspNetCore.Mvc;
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namespace DysonNetwork.Sphere.Translation;
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[ApiController]
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[Route("/api/translate")]
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public class TranslationController(ITranslationProvider provider, ICacheService cache) : ControllerBase
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{
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private const string CacheKeyPrefix = "translation:";
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private static string GenerateCacheKey(string text, string targetLanguage)
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{
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var inputBytes = Encoding.UTF8.GetBytes($"{text}:{targetLanguage}");
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var hashBytes = SHA256.HashData(inputBytes);
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return $"{CacheKeyPrefix}{Convert.ToHexString(hashBytes)}";
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}
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[HttpPost]
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[Authorize]
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public async Task<ActionResult<string>> Translate(
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[FromBody] string text,
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[FromQuery(Name = "to")] string targetLanguage,
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[FromQuery(Name = "from")] string? sourceLanguage
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)
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{
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if (HttpContext.Items["CurrentUser"] is not Account currentUser) return Unauthorized();
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if (currentUser.PerkSubscription is null)
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return StatusCode(403, "You need a subscription to use this feature.");
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// Generate cache key
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var cacheKey = GenerateCacheKey(text, targetLanguage);
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// Try to get from cache first
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var (found, cachedResult) = await cache.GetAsyncWithStatus<string>(cacheKey);
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if (found && cachedResult != null)
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return Ok(cachedResult);
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// If not in cache, translate and cache the result
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var result = await provider.Translate(text, targetLanguage);
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if (!string.IsNullOrEmpty(result))
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{
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await cache.SetAsync(cacheKey, result, TimeSpan.FromHours(24)); // Cache for 24 hours
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}
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return result;
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}
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} |