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| /* | |
| Creates TypeScript models from CSharp models | |
| - TypeScript model is set by config key TsModelsPath | |
| - CSharp models namespace is set by config key ModelNamespace | |
| 1) Add to your Program.cs: | |
| if (ModelBuilder.Build(args)) | |
| { | |
| return; | |
| } | |
| 2) Call with: "dotnet run -- build-models" | |
| */ | |
| using System.Reflection; | |
| using System.Text; | |
| namespace MyNamespace.Scripts; | |
| public static class ModelBuilder | |
| { | |
| private static bool IsNullable(this Type type) => type == typeof(string) || type.IsClass | |
| ? true | |
| : type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>); | |
| private static bool IsDict(this Type type) => type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Dictionary<,>); | |
| private static bool IsList(this Type type) => type.IsGenericType && type.GetGenericTypeDefinition() == typeof(List<>); | |
| private static string ToTsType(this Type? type) => type switch | |
| { | |
| Type t when t == typeof(string) => "string", | |
| Type t when t == typeof(List<string>) => "string[]", | |
| Type t when t == typeof(int) || t == typeof(int?) => "number", | |
| Type t when t == typeof(bool) || t == typeof(bool?) => "boolean", | |
| Type t when t.IsList() => $"I{t.GenericTypeArguments?.FirstOrDefault()?.ToTsType()}[]", | |
| Type t when t.IsDict() => $"Record<{t.GenericTypeArguments?.FirstOrDefault()?.ToTsType()}, {t.GenericTypeArguments?.LastOrDefault()?.ToTsType()}>", | |
| Type t when t.IsClass => $"I{t.Name}", | |
| _ => "any" | |
| }; | |
| public static bool Build(string[] args) | |
| { | |
| if (!(args.Length == 1 && args[0] == "build-models")) | |
| { | |
| return false; | |
| } | |
| var config = new ConfigurationBuilder() | |
| .AddJsonFile("appsettings.json", false, false) | |
| .AddJsonFile("appsettings.Development.json", false, false) | |
| .Build(); | |
| var filePath = config.GetValue<string>("TsModelsPath"); | |
| if (filePath is null) | |
| { | |
| Console.WriteLine("ERROR: ConfigModelsPath is not set."); | |
| return true; | |
| } | |
| var modelNamespace = config.GetValue<string>("ModelNamespace"); | |
| if (filePath is null) | |
| { | |
| Console.WriteLine("ERROR: ModelNamespace is not set."); | |
| return true; | |
| } | |
| StringBuilder sb = new(); | |
| sb.AppendLine("/*auto generated*/"); | |
| foreach (var modelClass in Assembly.Load(modelNamespace?.Split('.')[0] ?? "") | |
| .GetTypes() | |
| .Where(t => string.Equals(t.Namespace, modelNamespace, StringComparison.Ordinal)) ?? Enumerable.Empty<Type>()) | |
| { | |
| sb.AppendLine(); | |
| sb.AppendLine($"interface I{modelClass.Name} {{"); | |
| foreach (var prop in modelClass.GetProperties()) | |
| { | |
| var type = prop.PropertyType.ToTsType(); | |
| var nullable = prop.PropertyType.IsNullable(); | |
| var name = string.Concat(prop.Name[0].ToString().ToLower(), prop.Name[1..]); | |
| sb.AppendLine($" {name}{(nullable ? "?" : "")}: {type};"); | |
| } | |
| sb.AppendLine("}"); | |
| } | |
| File.WriteAllText(filePath, sb.ToString()); | |
| Console.WriteLine($"{filePath} written successfully"); | |
| return true; | |
| } | |
| } |
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