feat: add configuration service and its model class

src/CloudflareDnsync.Abstractions/IDnsyncConfigService.cs

@@ -0,0 +1,6 @@
+namespace CloudflareDnsync.Abstractions;
+
+public interface IDnsyncConfigService
+{
+
+}

src/CloudflareDnsync.Models/DnsyConfiguration.cs

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+using System.Diagnostics.CodeAnalysis;
+using Newtonsoft.Json;
+
+namespace CloudflareDnsync.Models;
+
+public sealed class DnsyConfiguration
+{
+    [JsonProperty("name")]
+    public string Name { get; set; } = null!;
+
+    [JsonProperty("api_key")]
+    public string? ApiKey { get; set; }
+
+    [JsonProperty("api_email")]
+    public string? ApiEmail { get; set; }
+
+    [JsonProperty("token")]
+    public string? Token { get; set; }
+
+    [JsonProperty("record_id")]
+    public string Id { get; set; } = null!;
+
+    [JsonProperty("zone_id")]
+    public string ZoneId { get; set; } = null!;
+
+    [JsonProperty("proxy")]
+    public bool UseProxy { get; set; }
+
+    [JsonProperty("record_type")]
+    public RecordType Type { get; set; }
+
+    [JsonIgnore]
+    [MemberNotNullWhen(false, nameof(ApiKey))]
+    [MemberNotNullWhen(false, nameof(ApiEmail))]
+    [MemberNotNullWhen(true, nameof(Token))]
+    public bool IsUsingToken => !string.IsNullOrWhiteSpace(Token);
+
+    public enum RecordType
+    {
+        A,
+        AAAA
+    }
+}

src/CloudflareDnsync.Services/DnsyncConfigService.cs

@@ -0,0 +1,32 @@
+using CloudflareDnsync.Abstractions;
+using CloudflareDnsync.Models;
+using Newtonsoft.Json;
+
+namespace CloudflareDnsync.Services;
+
+public sealed class DnsyncConfigService : IDnsyncConfigService
+{
+    private const string ConfigurationFile = ".dnsync.json";
+
+    private readonly string _configPath = Path.Combine(
+        Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
+        ConfigurationFile);
+
+    public DnsyncConfigService()
+    {
+        if (!IsConfigExists)
+        {
+            var configCreationTask = CreateConfigAsync();
+            configCreationTask.Wait();
+        }
+    }
+
+    private Task CreateConfigAsync()
+    {
+        List<DnsyConfiguration> configurations = [];
+        var json = JsonConvert.SerializeObject(configurations, Formatting.Indented);
+        return File.WriteAllTextAsync(_configPath, json);
+    }
+
+    private bool IsConfigExists => File.Exists(_configPath);
+}