private void OutputTypeConversion(TypeScriptWriter writer, string lvalue, ApiTypeDesc type, bool toTypeScript)
{
var converter = getConverter(type);
if (converter == null)
{
return;
}
MarkUsedConverters(converter, toTypeScript);
writer.WriteLine($"if ({lvalue})");
using (writer.Indent())
writer.WriteLine($"{lvalue} = this.{converter.FunctionName(toTypeScript)}({lvalue});");
}
protected void OutputInterface(TypeScriptWriter writer, ApiInterfaceDesc i)
{
writer.Write($"interface {getName(i.TsName)}");
if (i.Extends.Any())
{
writer.Write(" extends ");
writer.Write(i.Extends.Select(e => getNamespace(e.TsName) == getNamespace(i.TsName) ? getName(e.TsName) : e.TsName).Order().JoinString(", "));
}
writer.WriteLine(" {");
using (writer.Indent())
{
foreach (var prop in i.Properties.OrderBy(p => p.TsName))
{
writer.WriteLine($"{prop.TsName}: {prop.TsType.GetTypeScript()};");
}
}
writer.WriteLine("}");
}
protected void OutputEnum(TypeScriptWriter writer, ApiEnumDesc e)
{
writer.WriteLine($"type {getName(e.TsName)} = {e.Values.Select(v => v.TsName).Order().JoinString(" | ", "\"", "\"")};");
}
public void Output(TypeScriptWriter writer, ApiDesc api)
{
writer.WriteLine("// AUTOGENERATED FILE - any manual changes will be lost");
writer.WriteLine();
if (api.Imports.Count > 0)
{
foreach (var import in api.Imports.Order())
{
writer.WriteLine(import);
}
writer.WriteLine();
}
writer.WriteLine("declare global {");
writer.WriteLine();
using (writer.Indent())
{
var namespaces = api.Interfaces.Values.Select(i => getNamespace(i.TsName)).Concat(api.Enums.Values.Select(e => getNamespace(e.TsName))).Distinct().Order();
foreach (var ns in new string[] { null }.Concat(namespaces))
{
var enums = api.Enums.Values.Where(e => getNamespace(e.TsName) == ns).OrderBy(e => e.TsName).ToList();
var interfaces = api.Interfaces.Values.Where(i => getNamespace(i.TsName) == ns).OrderBy(e => e.TsName).ToList();
if (enums.Count == 0 && interfaces.Count == 0)
{
continue;
}
if (ns != null)
{
writer.WriteLine($"namespace {ns} {{");
writer.WriteLine();
}
using (writer.Indent(ns != null))
{
foreach (var e in enums)
{
OutputEnum(writer, e);
writer.WriteLine();
}
foreach (var i in interfaces)
{
OutputInterface(writer, i);
writer.WriteLine();
}
}
if (ns != null)
{
writer.WriteLine("}");
writer.WriteLine();
}
}
}
writer.WriteLine("}");
writer.WriteLine();
writer.WriteLine("export class Services {");
using (writer.Indent())
{
foreach (var svc in api.Services.OrderBy(s => s.Name))
{
writer.WriteLine($"public readonly {svc.Name}: {svc.Name}Service;");
}
writer.WriteLine();
writer.WriteLine("public constructor(hostname: string) {");
using (writer.Indent())
{
foreach (var svc in api.Services.OrderBy(s => s.Name))
{
writer.WriteLine($"this.{svc.Name} = new {svc.Name}Service(hostname);");
}
}
writer.WriteLine("}");
}
writer.WriteLine("}");
writer.WriteLine();
foreach (var svc in api.Services.OrderBy(s => s.Name))
{
OutputService(writer, svc);
writer.WriteLine();
}
}
protected void OutputService(TypeScriptWriter writer, ApiServiceDesc s)
{
_convertersUsedFrom = new HashSet <TypeConverter>();
_convertersUsedTo = new HashSet <TypeConverter>();
writer.WriteLine($"export class {s.Name}Service extends ApiServiceBase {{");
writer.WriteLine();
using (writer.Indent())
{
writer.WriteLine("private _hostname: string;");
writer.WriteLine();
writer.WriteLine("public constructor(hostname: string) {");
using (writer.Indent())
{
writer.WriteLine("super();");
writer.WriteLine("this._hostname = (hostname.substr(-1) == '/') ? hostname : hostname + '/';");
}
writer.WriteLine("}");
writer.WriteLine();
foreach (var method in s.Methods.OrderBy(m => m.TsName))
{
foreach (var httpMethod in method.HttpMethods.Order())
{
bool canDirectReturn = getConverter(method.TsReturnType) == null;
writer.Write($"public {(canDirectReturn ? "" : "async ")}{getMethodName(method, httpMethod)}(");
bool first = true;
foreach (var p in method.Parameters)
{
if (!first)
{
writer.Write(", ");
}
writer.Write($"{p.TsName}: {p.TsType.GetTypeScript()}");
first = false;
}
writer.WriteLine($"): {string.Format(ReturnTypeTemplate, method.TsReturnType.GetTypeScript())} {{");
using (writer.Indent())
{
var url = method.UrlPath;
bool first2 = true;
foreach (var p in method.Parameters.Where(p => p.Location == ParameterLocation.QueryString).OrderBy(p => p.TsName))
{
url += (first2 ? '?' : '&') + p.TsName + "=${encodeURIComponent('' + " + p.TsName + ")}";
first2 = false;
}
writer.WriteLine($"let url = this._hostname + `{url}`;");
// Output parameter type conversions
foreach (var p in method.Parameters)
{
OutputTypeConversion(writer, p.TsName, p.TsType, toTypeScript: false);
}
// Build request body
var bodyParams = method.Parameters.Where(p => p.Location == ParameterLocation.RequestBody).OrderBy(p => p.TsName).ToList();
if (bodyParams.Count > 0 && httpMethod == "GET")
{
throw new InvalidOperationException($"GET requests must not have any body parameters. Offending parameter: {bodyParams[0].TsName}, method {method.Method.Name}, controller {s.Controller.FullName}");
}
if (bodyParams.Count > 1 && (method.BodyEncoding == BodyEncoding.Raw || method.BodyEncoding == BodyEncoding.Json))
{
throw new InvalidOperationException($"The body encoding for this method allows for at most one body parameter. Offending parameters: [{bodyParams.Select(p => p.TsName).JoinString(", ")}], method {method.Method.Name}, controller {s.Controller.FullName}");
}
var bodyCode = "";
if (bodyParams.Count > 0)
{
if (method.BodyEncoding == BodyEncoding.Raw)
{
bodyCode = $", body: {bodyParams[0].TsName}";
}
else if (method.BodyEncoding == BodyEncoding.Json)
{
bodyCode = $", body: JSON.stringify({bodyParams[0].TsName}), headers: {{ 'Content-Type': 'application/json' }}";
}
else if (method.BodyEncoding == BodyEncoding.FormUrlEncoded)
{
writer.WriteLine("let __body = new URLSearchParams();");
foreach (var bp in bodyParams)
{
writer.WriteLine($"__body.append('{bp.TsName}', '' + {bp.TsName});");
}
bodyCode = ", body: __body";
}
else if (method.BodyEncoding == BodyEncoding.MultipartFormData)
{
writer.WriteLine("let __body = new FormData();");
foreach (var bp in bodyParams)
{
writer.WriteLine($"__body.append('{bp.TsName}', '' + {bp.TsName});");
}
bodyCode = ", body: __body";
throw new NotImplementedException("FormData encoding is not fully implemented."); // no support for file name, parameter is always stringified with no support for Blob
}
else
{
throw new Exception($"Unexpected {nameof(method.BodyEncoding)}: {method.BodyEncoding}");
}
}
// Output call
var sendCookies = s.SendCookies == SendCookies.Always ? "include" : s.SendCookies == SendCookies.SameOriginOnly ? "same-origin" : s.SendCookies == SendCookies.Never ? "omit" : throw new Exception();
if (canDirectReturn)
{
writer.Write("return ");
}
else
{
writer.Write("let result = await ");
}
writer.WriteLine($"this.{httpMethod}<{method.TsReturnType.GetTypeScript()}>(url, {{ credentials: '{sendCookies}'{bodyCode} }});");
if (!canDirectReturn)
{
// Output return type conversion
OutputTypeConversion(writer, "result", method.TsReturnType, toTypeScript: true);
writer.WriteLine("return result;");
}
}
writer.WriteLine("}");
writer.WriteLine();
}
}
// Output type converters
foreach (var tc in _typeConverters.Values.Where(c => c != null).OrderBy(c => c.ForType.GetHash()))
{
if (_convertersUsedFrom.Contains(tc))
{
writer.WriteLine($"private {tc.FunctionName(toTypeScript: false)}(val: {tc.ForType.GetTypeScript()}): any {{");
using (writer.Indent())
tc.WriteFunctionBody(writer, false);
writer.WriteLine("}");
writer.WriteLine();
}
if (_convertersUsedTo.Contains(tc))
{
writer.WriteLine($"private {tc.FunctionName(toTypeScript: true)}(val: any): {tc.ForType.GetTypeScript()} {{");
using (writer.Indent())
tc.WriteFunctionBody(writer, true);
writer.WriteLine("}");
writer.WriteLine();
}
}
}
writer.WriteLine("}");
}