using System; using System.IO; using StardewModdingAPI.Framework.Serialisation; namespace StardewModdingAPI.Framework.ModHelpers { /// <summary>Provides simplified APIs for writing mods.</summary> internal class ModHelper : BaseHelper, IModHelper, IDisposable { /********* ** Properties *********/ /// <summary>Encapsulates SMAPI's JSON file parsing.</summary> private readonly JsonHelper JsonHelper; /********* ** Accessors *********/ /// <summary>The full path to the mod's folder.</summary> public string DirectoryPath { get; } /// <summary>An API for loading content assets.</summary> public IContentHelper Content { get; } /// <summary>An API for accessing private game code.</summary> public IReflectionHelper Reflection { get; } /// <summary>an API for fetching metadata about loaded mods.</summary> public IModRegistry ModRegistry { get; } /// <summary>An API for managing console commands.</summary> public ICommandHelper ConsoleCommands { get; } /// <summary>An API for reading translations stored in the mod's <c>i18n</c> folder, with one file per locale (like <c>en.json</c>) containing a flat key => value structure. Translations are fetched with locale fallback, so missing translations are filled in from broader locales (like <c>pt-BR.json</c> < <c>pt.json</c> < <c>default.json</c>).</summary> public ITranslationHelper Translation { get; } /********* ** Public methods *********/ /// <summary>Construct an instance.</summary> /// <param name="modID">The mod's unique ID.</param> /// <param name="modDirectory">The full path to the mod's folder.</param> /// <param name="jsonHelper">Encapsulate SMAPI's JSON parsing.</param> /// <param name="contentHelper">An API for loading content assets.</param> /// <param name="commandHelper">An API for managing console commands.</param> /// <param name="modRegistry">an API for fetching metadata about loaded mods.</param> /// <param name="reflectionHelper">An API for accessing private game code.</param> /// <param name="translationHelper">An API for reading translations stored in the mod's <c>i18n</c> folder.</param> /// <exception cref="ArgumentNullException">An argument is null or empty.</exception> /// <exception cref="InvalidOperationException">The <paramref name="modDirectory"/> path does not exist on disk.</exception> public ModHelper(string modID, string modDirectory, JsonHelper jsonHelper, IContentHelper contentHelper, ICommandHelper commandHelper, IModRegistry modRegistry, IReflectionHelper reflectionHelper, ITranslationHelper translationHelper) : base(modID) { // validate directory if (string.IsNullOrWhiteSpace(modDirectory)) throw new ArgumentNullException(nameof(modDirectory)); if (!Directory.Exists(modDirectory)) throw new InvalidOperationException("The specified mod directory does not exist."); // initialise this.DirectoryPath = modDirectory; this.JsonHelper = jsonHelper ?? throw new ArgumentNullException(nameof(jsonHelper)); this.Content = contentHelper ?? throw new ArgumentNullException(nameof(contentHelper)); this.ModRegistry = modRegistry ?? throw new ArgumentNullException(nameof(modRegistry)); this.ConsoleCommands = commandHelper ?? throw new ArgumentNullException(nameof(commandHelper)); this.Reflection = reflectionHelper ?? throw new ArgumentNullException(nameof(reflectionHelper)); this.Translation = translationHelper ?? throw new ArgumentNullException(nameof(translationHelper)); } /**** ** Mod config file ****/ /// <summary>Read the mod's configuration file (and create it if needed).</summary> /// <typeparam name="TConfig">The config class type. This should be a plain class that has public properties for the settings you want. These can be complex types.</typeparam> public TConfig ReadConfig<TConfig>() where TConfig : class, new() { TConfig config = this.ReadJsonFile<TConfig>("config.json") ?? new TConfig(); this.WriteConfig(config); // create file or fill in missing fields return config; } /// <summary>Save to the mod's configuration file.</summary> /// <typeparam name="TConfig">The config class type.</typeparam> /// <param name="config">The config settings to save.</param> public void WriteConfig<TConfig>(TConfig config) where TConfig : class, new() { this.WriteJsonFile("config.json", config); } /**** ** Generic JSON files ****/ /// <summary>Read a JSON file.</summary> /// <typeparam name="TModel">The model type.</typeparam> /// <param name="path">The file path relative to the mod directory.</param> /// <returns>Returns the deserialised model, or <c>null</c> if the file doesn't exist or is empty.</returns> public TModel ReadJsonFile<TModel>(string path) where TModel : class { path = Path.Combine(this.DirectoryPath, path); return this.JsonHelper.ReadJsonFile<TModel>(path); } /// <summary>Save to a JSON file.</summary> /// <typeparam name="TModel">The model type.</typeparam> /// <param name="path">The file path relative to the mod directory.</param> /// <param name="model">The model to save.</param> public void WriteJsonFile<TModel>(string path, TModel model) where TModel : class { path = Path.Combine(this.DirectoryPath, path); this.JsonHelper.WriteJsonFile(path, model); } /**** ** Disposal ****/ /// <summary>Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.</summary> public void Dispose() { // nothing to dispose yet } } }