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using System.Diagnostics.CodeAnalysis;
using System.Reflection;
using Harmony;
using StardewModdingAPI.Framework.Patching;
using StardewValley;
namespace StardewModdingAPI.Patches
{
/// <summary>A Harmony patch for the <see cref="Dialogue"/> constructor which intercepts invalid dialogue lines and logs an error instead of crashing.</summary>
internal class CheckEventPreconditionErrorPatch : IHarmonyPatch
{
/*********
** Fields
*********/
/// <summary>Writes messages to the console and log file on behalf of the game.</summary>
private static IMonitor MonitorForGame;
/// <summary>Whether the method is currently being intercepted.</summary>
private static bool IsIntercepted;
/*********
** Accessors
*********/
/// <summary>A unique name for this patch.</summary>
public string Name => $"{nameof(CheckEventPreconditionErrorPatch)}";
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
/// <param name="monitorForGame">Writes messages to the console and log file on behalf of the game.</param>
public CheckEventPreconditionErrorPatch(IMonitor monitorForGame)
{
CheckEventPreconditionErrorPatch.MonitorForGame = monitorForGame;
}
/// <summary>Apply the Harmony patch.</summary>
/// <param name="harmony">The Harmony instance.</param>
public void Apply(HarmonyInstance harmony)
{
harmony.Patch(
original: AccessTools.Method(typeof(GameLocation), "checkEventPrecondition"),
prefix: new HarmonyMethod(this.GetType(), nameof(CheckEventPreconditionErrorPatch.Prefix))
);
}
/*********
** Private methods
*********/
/// <summary>The method to call instead of the GameLocation.CheckEventPrecondition.</summary>
/// <param name="__instance">The instance being patched.</param>
/// <param name="__result">The return value of the original method.</param>
/// <param name="precondition">The precondition to be parsed.</param>
/// <param name="__originalMethod">The method being wrapped.</param>
/// <returns>Returns whether to execute the original method.</returns>
/// <remarks>This method must be static for Harmony to work correctly. See the Harmony documentation before renaming arguments.</remarks>
[SuppressMessage("ReSharper", "InconsistentNaming", Justification = "Argument names are defined by Harmony.")]
private static bool Prefix(GameLocation __instance, ref int __result, string precondition, MethodInfo __originalMethod)
{
if (CheckEventPreconditionErrorPatch.IsIntercepted)
return true;
try
{
CheckEventPreconditionErrorPatch.IsIntercepted = true;
__result = (int)__originalMethod.Invoke(__instance, new object[] { precondition });
return false;
}
catch (TargetInvocationException ex)
{
__result = -1;
CheckEventPreconditionErrorPatch.MonitorForGame.Log($"Failed parsing event precondition ({precondition}):\n{ex.InnerException}", LogLevel.Error);
return false;
}
finally
{
CheckEventPreconditionErrorPatch.IsIntercepted = false;
}
}
}
}
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