Jason
88 lines
2.9 KiB
C#
88 lines
2.9 KiB
C#
using System.Text.Json;
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using PrintService.Models;
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namespace PrintService.Services;
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/// <summary>
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/// Loads printer-config.json (global and local), merging local over global.
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/// Mirrors the same logic used in PrintServiceTray.
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/// </summary>
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public class ConfigurationService
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{
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private readonly string _globalConfigPath;
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private readonly string _localConfigPath;
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private readonly ILogger<ConfigurationService> _logger;
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public ConfigurationService(ILogger<ConfigurationService> logger)
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{
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_logger = logger;
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_globalConfigPath = Path.Combine(
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Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData),
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"LAAPC", "printer-config.json");
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_localConfigPath = Path.Combine(
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Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
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"LAAPC", "printer-config.json");
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}
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/// <summary>
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/// Load merged configuration. Returns an empty config (not null) if no files exist.
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/// </summary>
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public PrinterConfiguration Load()
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{
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var config = new PrinterConfiguration();
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if (File.Exists(_globalConfigPath))
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{
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try
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{
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var json = File.ReadAllText(_globalConfigPath);
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var global = JsonSerializer.Deserialize<PrinterConfiguration>(json);
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if (global != null)
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config = global;
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}
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catch (Exception ex)
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{
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_logger.LogWarning(ex, "Failed to read global printer config from {Path}", _globalConfigPath);
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}
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}
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if (File.Exists(_localConfigPath))
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{
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try
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{
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var json = File.ReadAllText(_localConfigPath);
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var local = JsonSerializer.Deserialize<PrinterConfiguration>(json);
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if (local != null)
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{
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// Local overrides global per document type
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foreach (var kvp in local.DocumentTypes)
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config.DocumentTypes[kvp.Key] = kvp.Value;
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}
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}
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catch (Exception ex)
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{
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_logger.LogWarning(ex, "Failed to read local printer config from {Path}", _localConfigPath);
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}
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}
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if (config.DocumentTypes.Count == 0)
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_logger.LogWarning("No document types found in printer-config.json. Checked: {Global} and {Local}",
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_globalConfigPath, _localConfigPath);
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return config;
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}
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/// <summary>
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/// Get a single document type config by name (case-insensitive).
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/// </summary>
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public DocumentTypeConfig? GetDocumentType(string documentType)
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{
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var config = Load();
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return config.DocumentTypes
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.FirstOrDefault(kvp => kvp.Key.Equals(documentType, StringComparison.OrdinalIgnoreCase))
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.Value;
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}
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}
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