/*
 * Copyright (C)2005-2019 Haxe Foundation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

package cpp.cppia;

import haxe.macro.Compiler;
import haxe.macro.Context;
import haxe.macro.Type;
#if !macro
#if cppia
@:build(cpp.cppia.HostClasses.exclude())
#end
class HostClasses {}
#else
import Sys;
import haxe.Constraints;

@:noPackageRestrict
class HostClasses {
	static var classes = [
		"cpp.Lib",
		"cpp.NativeArray",
		"cpp.NativeString",
		"cpp.vm.Debugger",
		"sys.thread.Deque",
		"sys.thread.Lock",
		"sys.thread.Mutex",
		"sys.thread.Thread",
		"sys.thread.Tls",
		"sys.thread.Semaphore",
		"sys.thread.Condition",
		"cpp.vm.ExecutionTrace",
		"cpp.vm.Gc",
		"cpp.vm.Profiler",
		"cpp.vm.Unsafe",
		"cpp.vm.WeakRef",
		"cpp.Object",
		"cpp.Int64",
		"cpp.Finalizable",
		"Std",
		"StringBuf",
		"sys.FileSystem",
		"sys.io.File",
		"sys.io.FileInput",
		"sys.io.Process",
		"sys.net.UdpSocket",
		"sys.net.Socket",
		"sys.ssl.Certificate",
		"sys.ssl.Digest",
		"sys.ssl.Key",
		"sys.ssl.Socket",
		"Enum",
		"EnumValue",
		// "Sys",
		"Type",
		"Xml",
		"Date",
		"Lambda",
		"DateTools",
		"List",
		"Math",
		"Reflect",
		"StringBuf",
		"StringTools",
		"haxe.ds.IntMap",
		"haxe.ds.ObjectMap",
		"haxe.ds.StringMap",
		"haxe.ds.BalancedTree",
		"haxe.NativeStackTrace",
		"haxe.Serializer",
		"haxe.Unserializer",
		"haxe.Resource",
		"haxe.Template",
		"haxe.Utf8",
		"haxe.Log",
		"haxe.zip.Compress",
		"haxe.zip.Uncompress",
		"haxe.crypto.BaseCode",
		"haxe.crypto.Sha256",
		"haxe.crypto.Hmac",
		"haxe.crypto.Crc32",
		"haxe.crypto.Base64",
		"haxe.crypto.Adler32",
		"haxe.crypto.Md5",
		"haxe.crypto.Sha1",
		"haxe.io.BufferInput",
		"haxe.io.Bytes",
		"haxe.io.BytesBuffer",
		"haxe.io.BytesData",
		"haxe.io.BytesInput",
		"haxe.io.BytesOutput",
		"haxe.io.Eof",
		"haxe.io.Error",
		"haxe.io.FPHelper",
		"haxe.io.Input",
		"haxe.io.Output",
		"haxe.io.Path",
		"haxe.io.StringInput",
		"haxe.xml.Parser",
		"haxe.Json",
		"haxe.NativeStackTrace",
		"haxe.Resource",
		"haxe.Utf8",
		"haxe.Int64",
		"haxe.Int32",
		"haxe.Serializer",
		"haxe.Unserializer",
		"haxe.ds.ArraySort",
		"haxe.ds.GenericStack",
		"haxe.ds.ObjectMap",
		"haxe.ds.Vector",
		"haxe.ds.BalancedTree",
		"haxe.ds.HashMap",
		"haxe.ds.Option",
		"haxe.ds.WeakMap",
		"haxe.ds.EnumValueMap",
		"haxe.ds.IntMap",
		"haxe.ds.Int64Map",
		"haxe.ds.StringMap",
		"haxe.iterators.MapKeyValueIterator",
		"StdTypes",
		"Array",
		"Class",
		"Date",
		"EReg",
		"Enum",
		"EnumValue",
		// "IntIterator",
		"List",
		"Map",
		"String",
		"haxe.atomic.AtomicInt"
	];

	static function parseClassInfo(externs:Map<String, Bool>, filename:String) {
		if (sys.FileSystem.exists(filename)) {
			var file = sys.io.File.read(filename);
			try {
				while (true) {
					var line = file.readLine();
					var parts = line.split(" ");
					if (parts[0] == "class" || parts[0] == "interface" || parts[0] == "enum")
						externs.set(parts[1], true);
				}
			} catch (e:Dynamic) {}
			if (file != null)
				file.close();
		}
	}

	static function onGenerateCppia(types:Array<Type>):Void {
		var externs = new Map<String, Bool>();
		externs.set("Sys", true);
		externs.set("haxe.IMap", true);
		externs.set("haxe.crypto.HashMethod", true);
		externs.set("haxe._Int64.Int64_Impl_", true);
		externs.set("haxe._Int64.___Int64", true);
		externs.set("haxe._Int32.Int32_Impl_", true);
		externs.set("haxe._Int32.___Int32", true);
		// Hidden in implementation classes
		// externs.set("sys.db.RecordType",true);
		externs.set("sys.net._Socket.SocketInput", true);
		externs.set("sys.net._Socket.SocketOutput", true);
		externs.set("sys.ssl._Socket.SocketInput", true);
		externs.set("sys.ssl._Socket.SocketOutput", true);
		externs.set("sys.thread._Thread.HaxeThread",true);
		externs.set("haxe.ds.TreeNode", true);
		externs.set("haxe.xml.XmlParserException", true);
		for (e in classes)
			externs.set(e, true);

		var define = Context.defined("dll_import") ? Context.definedValue("dll_import") : "1";
		if (define != "1")
			parseClassInfo(externs, define);
		else {
			var tried = new Map<String, Bool>();
			for (path in Context.getClassPath())
				if (!tried.exists(path)) {
					tried.set(path, true);
					parseClassInfo(externs, path + "/export_classes.info");
				}
		}

		for (type in types) {
			switch (type) {
				case TInst(classRef, params):
					if (externs.exists(classRef.toString()))
						classRef.get().exclude();
				case TEnum(enumRef, params):
					if (externs.exists(enumRef.toString()))
						enumRef.get().exclude();
				default:
			}
		}
	}

	// Exclude the standard classes, and any described in 'export_classes.info' files found in the classpath
	public static function exclude() {
		if (Context.defined("cppia"))
			Context.onGenerate(onGenerateCppia);
		else
			Context.error("cpp.cppia.excludeHostFiles is only for cppia code", Context.currentPos());
		return Context.getBuildFields();
	}

	// Ensure that the standard classes are included in the host
	public static function include() {
		Compiler.keep("haxe.IMap");
		Compiler.keep("haxe.crypto.HashMethod");
		Compiler.keep("haxe._Int64.Int64_Impl_");
		Compiler.keep("haxe._Int32.Int32_Impl_");
		Compiler.keep("haxe._Int64.___Int64");
		Compiler.keep("haxe._Int32.___Int32");
		for (cls in classes) {
			Context.getModule(cls);
			Compiler.keep(cls);
		}
		return Context.getBuildFields();
	}
}
#end
