Reworked the Config system

DiscordBotCore/Others/Settings/ICustomSettingsDictionary.cs

@@ -0,0 +1,136 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace DiscordBotCore.Others.Settings;
+
+internal interface ICustomSettingsDictionary<TKey,TValue>
+{
+    /// <summary>
+    /// Adds an element to the custom settings dictionary
+    /// </summary>
+    /// <param name="key">The key</param>
+    /// <param name="value">The value</param>
+    void Add(TKey key, TValue value);
+
+    /// <summary>
+    /// Sets the value of a key in the custom settings dictionary
+    /// </summary>
+    /// <param name="key">The key</param>
+    /// <param name="value">The value</param>
+    void Set(TKey key, TValue value);
+
+    /// <summary>
+    /// Gets the value of a key in the custom settings dictionary. If the T type is different then the TValue type, it will try to convert it.
+    /// </summary>
+    /// <param name="key">The key</param>
+    /// <param name="defaultValue">The default value to be returned if the searched value is not found</param>
+    /// <typeparam name="T">The type of the returned value</typeparam>
+    /// <returns></returns>
+    T Get<T>(TKey key, T defaultValue);
+
+    /// <summary>
+    /// Gets the value of a key in the custom settings dictionary. If the T type is different then the TValue type, it will try to convert it.
+    /// </summary>
+    /// <param name="key">The key</param>
+    /// <typeparam name="T">The type of the returned value</typeparam>
+    /// <returns></returns>
+    T? Get<T>(TKey key);
+
+    /// <summary>
+    /// Get a list of values from the custom settings dictionary
+    /// </summary>
+    /// <param name="key">The key</param>
+    /// <param name="defaultValue">The default list to be returned if nothing is found</param>
+    /// <typeparam name="T">The type of the returned value</typeparam>
+    /// <returns></returns>
+    List<T> GetList<T>(TKey key, List<T> defaultValue);
+
+    /// <summary>
+    /// Remove a key from the custom settings dictionary
+    /// </summary>
+    /// <param name="key">The key</param>
+    void Remove(TKey key);
+    
+    /// <summary>
+    /// Get the enumerator of the custom settings dictionary
+    /// </summary>
+    /// <returns></returns>
+    IEnumerator<KeyValuePair<TKey, TValue>> GetEnumerator();
+
+    /// <summary>
+    /// Clear the custom settings dictionary
+    /// </summary>
+    void Clear();
+
+    /// <summary>
+    /// Check if the custom settings dictionary contains a key
+    /// </summary>
+    /// <param name="key">The key</param>
+    /// <returns></returns>
+    bool ContainsKey(TKey key);
+
+    /// <summary>
+    /// Filter the custom settings dictionary based on a predicate
+    /// </summary>
+    /// <param name="predicate">The predicate</param>
+    /// <returns></returns>
+    IEnumerable<KeyValuePair<TKey, TValue>> Where(Func<KeyValuePair<TKey, TValue>, bool> predicate);
+
+    /// <summary>
+    /// Filter the custom settings dictionary based on a predicate
+    /// </summary>
+    /// <param name="predicate">The predicate</param>
+    IEnumerable<KeyValuePair<TKey, TValue>> Where(Func<KeyValuePair<TKey, TValue>, int, bool> predicate);
+
+    /// <summary>
+    /// Filter the custom settings dictionary based on a predicate
+    /// </summary>
+    /// <param name="selector">The predicate</param>
+    IEnumerable<TResult> Where<TResult>(Func<KeyValuePair<TKey, TValue>, TResult> selector);
+
+    /// <summary>
+    /// Filter the custom settings dictionary based on a predicate
+    /// </summary>
+    /// <param name="selector">The predicate</param>
+    IEnumerable<TResult> Where<TResult>(Func<KeyValuePair<TKey, TValue>, int, TResult> selector);
+
+    /// <summary>
+    /// Get the first element of the custom settings dictionary based on a predicate
+    /// </summary>
+    /// <param name="predicate">The predicate</param>
+    KeyValuePair<TKey, TValue> FirstOrDefault(Func<KeyValuePair<TKey, TValue>, bool> predicate);
+
+    /// <summary>
+    /// Get the first element of the custom settings dictionary
+    /// </summary>
+    /// <returns></returns>
+    KeyValuePair<TKey, TValue> FirstOrDefault();
+
+    /// <summary>
+    /// Checks if the custom settings dictionary contains all the keys
+    /// </summary>
+    /// <param name="keys">A list of keys</param>
+    /// <returns></returns>
+    bool ContainsAllKeys(params TKey[] keys);
+
+    /// <summary>
+    /// Try to get the value of a key in the custom settings dictionary
+    /// </summary>
+    /// <param name="key">The key</param>
+    /// <param name="value">The value</param>
+    /// <returns></returns>
+    bool TryGetValue(TKey key, out TValue? value);
+    
+    /// <summary>
+    /// Save the custom settings dictionary to a file
+    /// </summary>
+    /// <returns></returns>
+    Task SaveToFile();
+    
+    /// <summary>
+    /// Load the custom settings dictionary from a file
+    /// </summary>
+    /// <returns></returns>
+    Task LoadFromFile();
+}