69 lines
2.9 KiB
C#
69 lines
2.9 KiB
C#
using Newtonsoft.Json.Linq;
|
|
using System;
|
|
using System.Threading.Tasks;
|
|
|
|
namespace Kerobot
|
|
{
|
|
/// <summary>
|
|
/// Base class for a Kerobot module. A module implements a user-facing feature and is expected to directly handle
|
|
/// user input (both by means of configuration and incoming Discord events) and process it accordingly.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// Implementing classes should not rely on local/instance variables to store data. Make use of
|
|
/// <see cref="CreateGuildStateAsync(JToken)"/> and <see cref="GetGuildState{T}(ulong)"/>.
|
|
/// </remarks>
|
|
public abstract class ModuleBase
|
|
{
|
|
private readonly Kerobot _kb;
|
|
|
|
/// <summary>
|
|
/// Retrieves the Kerobot instance.
|
|
/// </summary>
|
|
public Kerobot Kerobot => _kb;
|
|
|
|
/// <summary>
|
|
/// When a module is loaded, this constructor is called.
|
|
/// Services are available at this point. Do not attempt to communicate to Discord within the constructor.
|
|
/// </summary>
|
|
public ModuleBase(Kerobot kb) => _kb = kb;
|
|
|
|
/// <summary>
|
|
/// Gets the module name.
|
|
/// This value is derived from the class's name. It is used in configuration and logging.
|
|
/// </summary>
|
|
public string Name => GetType().Name;
|
|
|
|
/// <summary>
|
|
/// Called when a guild becomes available. The implementing class should construct an object to hold
|
|
/// data specific to the corresponding guild for use during runtime.
|
|
/// </summary>
|
|
/// <param name="config">JSON token holding module configuration specific to this guild.</param>
|
|
/// <returns>
|
|
/// An object containing state and/or configuration information for the guild currently being processed.
|
|
/// </returns>
|
|
public abstract Task<object> CreateGuildStateAsync(JToken config);
|
|
|
|
/// <summary>
|
|
/// Retrieves the state object that corresponds with the given guild.
|
|
/// </summary>
|
|
/// <typeparam name="T">The state object's type.</typeparam>
|
|
/// <param name="guildId">The guild ID for which to retrieve the state object.</param>
|
|
/// <returns>The state object cast in the given type, or Default(T) if none exists.</returns>
|
|
/// <exception cref="InvalidCastException">
|
|
/// Thrown if the stored state object cannot be cast as specified.
|
|
/// </exception>
|
|
protected T GetGuildState<T>(ulong guildId) => Kerobot.GetGuildState<T>(guildId, GetType());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Represents errors that occur when a module attempts to create a new guild state object.
|
|
/// </summary>
|
|
public class ModuleLoadException : Exception
|
|
{
|
|
/// <summary>
|
|
/// Initializes this exception class with the specified error message.
|
|
/// </summary>
|
|
/// <param name="message"></param>
|
|
public ModuleLoadException(string message) : base(message) { }
|
|
}
|
|
}
|