IConfigRepository

IConfigRepository.cs

/// <summary>
/// Interface for configuration repository.
/// </summary>
public interface IConfigRepository
{
    Dictionary<string, string> GetSection(string sectionName);

    string? GetValue(
        string sectionName,
        string key);
}

/// <summary>
/// Repository for accessing configuration settings for the application from config.json file.
/// </summary>
public class JsonConfigRepository : IConfigRepository
{
    private readonly IConfiguration _config; 
    
    public JsonConfigRepository(IConfiguration config)
    {
        _config = config;
    }
    
    /// <summary>
    /// Get section by name from config.json file.
    /// </summary>
    /// <param name="sectionName"></param>
    /// <returns>Dictionary of strings for each key value pair listed under give section name. Returns null if Section name doesnt exist.</returns>
    public Dictionary<string, string> GetSection(string sectionName)
    {
        return _config.GetSection(sectionName)
            .GetChildren()
            .ToDictionary(x => x.Key, x => x.Value ?? string.Empty);
    }
    
    /// <summary>
    /// Get value from section by key from config.json file.
    /// </summary>
    /// <param name="sectionName">name of section key lives under</param>
    /// <param name="key">Key name associated with value.</param>
    /// <returns>string value under given sectionName and Key. May be null if value was not found.</returns>
    public string? GetValue(string sectionName, string key)
    {
        return _config.GetSection(sectionName)?[key];
    }
}