104 lines
3.9 KiB
C#
104 lines
3.9 KiB
C#
using FinlyticNews.Database;
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using FinlyticNews.Entities;
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using Microsoft.EntityFrameworkCore;
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namespace FinlyticNews.Services;
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/// <summary>
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/// Service interface for retrieving and persisting runtime settings in PostgreSQL for FinlyticNews.
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/// </summary>
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public interface ISettingsDbService
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{
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/// <summary>
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/// Retrieves current news settings from database, initializing default values if empty.
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/// </summary>
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Task<NewsSettingsEntity> GetSettingsAsync();
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/// <summary>
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/// Persists updated settings to PostgreSQL.
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/// </summary>
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Task<NewsSettingsEntity> SaveSettingsAsync(NewsSettingsEntity settings);
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/// <summary>
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/// Updates settings from a key-value dictionary received via Admin Panel MQTT events.
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/// </summary>
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Task UpdateSettingsFromDictionaryAsync(Dictionary<string, string> dictionary);
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}
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/// <summary>
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/// EF Core implementation of <see cref="ISettingsDbService"/>.
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/// </summary>
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public class SettingsDbService : ISettingsDbService
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{
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private readonly NewsDbContext _context;
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/// <summary>
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/// Initializes a new instance of the <see cref="SettingsDbService"/> class.
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/// </summary>
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/// <param name="context">The database context mapping database tables.</param>
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public SettingsDbService(NewsDbContext context)
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{
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_context = context;
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}
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/// <inheritdoc />
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public async Task<NewsSettingsEntity> GetSettingsAsync()
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{
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var settings = await _context.Settings.AsNoTracking().FirstOrDefaultAsync();
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if (settings == null)
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{
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settings = new NewsSettingsEntity { Id = Guid.NewGuid() };
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_context.Settings.Add(settings);
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await _context.SaveChangesAsync();
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_context.ChangeTracker.Clear();
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}
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return settings;
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}
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/// <inheritdoc />
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public async Task<NewsSettingsEntity> SaveSettingsAsync(NewsSettingsEntity settings)
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{
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var existing = await _context.Settings.FirstOrDefaultAsync();
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if (existing == null)
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{
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if (settings.Id == Guid.Empty) settings.Id = Guid.NewGuid();
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_context.Settings.Add(settings);
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}
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else
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{
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existing.PollingFrequencyMinutes = settings.PollingFrequencyMinutes;
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existing.ArticleRetentionDays = settings.ArticleRetentionDays;
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existing.DefaultPageSize = settings.DefaultPageSize;
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existing.ScrapingIntervalMinutes = settings.ScrapingIntervalMinutes;
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existing.N8nWebhookUrl = settings.N8nWebhookUrl;
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existing.UpdatedAt = settings.UpdatedAt;
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_context.Settings.Update(existing);
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}
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await _context.SaveChangesAsync();
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return settings;
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}
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/// <inheritdoc />
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public async Task UpdateSettingsFromDictionaryAsync(Dictionary<string, string> dictionary)
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{
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var settings = await GetSettingsAsync();
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foreach (var (key, value) in dictionary)
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{
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if (string.Equals(key, "PollingFrequencyMinutes", StringComparison.OrdinalIgnoreCase) && int.TryParse(value, out var pfm))
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settings.PollingFrequencyMinutes = pfm;
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else if (string.Equals(key, "ArticleRetentionDays", StringComparison.OrdinalIgnoreCase) && int.TryParse(value, out var ard))
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settings.ArticleRetentionDays = ard;
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else if (string.Equals(key, "DefaultPageSize", StringComparison.OrdinalIgnoreCase) && int.TryParse(value, out var dps))
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settings.DefaultPageSize = dps;
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else if (string.Equals(key, "ScrapingIntervalMinutes", StringComparison.OrdinalIgnoreCase) && int.TryParse(value, out var sim))
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settings.ScrapingIntervalMinutes = sim;
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else if (string.Equals(key, "N8nWebhookUrl", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(value))
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settings.N8nWebhookUrl = value.Trim();
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}
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settings.UpdatedAt = DateTime.UtcNow;
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await SaveSettingsAsync(settings);
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}
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}
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