/*
 * 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 php;

import haxe.ds.StringMap;
import php.*;
import php.reflection.ReflectionClass;

/**
	Platform-specific PHP Library. Provides some platform-specific functions
	for the PHP target, such as conversion from Haxe types to native types
	and vice-versa.
**/
class Lib {
	/**
		Print the specified value on the default output.
	**/
	public static inline function print(v:Dynamic):Void {
		Global.echo(Std.string(v));
	}

	/**
		Print the specified value on the default output followed by
		a newline character.
	**/
	public static function println(v:Dynamic):Void {
		print(v);
		print("\n");
	}

	/**
		Displays structured information about one or more expressions
		that includes its type and value. Arrays and objects are
		explored recursively with values indented to show structure.
	**/
	public static inline function dump(v:Dynamic):Void {
		Global.var_dump(v);
	}

	/**
		Serialize using native PHP serialization. This will return a binary
		`String` that can be stored for long term usage.
	**/
	public static inline function serialize(v:Dynamic):String {
		return Global.serialize(v);
	}

	/**
		Unserialize a `String` using native PHP serialization. See `php.Lib.serialize()`.
	**/
	public static inline function unserialize(s:String):Dynamic {
		return Global.unserialize(s);
	}

	/**
		Find out whether an extension is loaded.
	**/
	public static inline function extensionLoaded(name:String) {
		return Global.extension_loaded(name);
	}

	public static inline function isCli():Bool {
		return 0 == Global.strncasecmp(Const.PHP_SAPI, 'cli', 3);
	}

	/**
		Output file content from the given file name.
	**/
	public static inline function printFile(file:String) {
		return Global.fpassthru(Global.fopen(file, "r"));
	}

	public static inline function toPhpArray(a:Array<Dynamic>):NativeArray {
		return @:privateAccess a.arr;
	}

	public static inline function toHaxeArray(a:NativeArray):Array<Dynamic> {
		return @:privateAccess Array.wrap(a);
	}

	public static function hashOfAssociativeArray<T>(arr:NativeAssocArray<T>):StringMap<T> {
		var result = new StringMap();
		@:privateAccess result.data = arr;
		return result;
	}

	public static inline function associativeArrayOfHash(hash:haxe.ds.StringMap<Dynamic>):NativeArray {
		return @:privateAccess hash.data;
	}

	public static function objectOfAssociativeArray(arr:NativeArray):Dynamic {
		Syntax.foreach(arr, function(key:Scalar, value:Dynamic) {
			if (Global.is_array(value)) {
				arr[key] = objectOfAssociativeArray(value);
			}
		});
		return Boot.createAnon(arr);
	}

	public static inline function associativeArrayOfObject(ob:Dynamic):NativeArray {
		return Syntax.array(ob);
	}

	/**
		See the documentation for the equivalent PHP function for details on usage:
		<http://php.net/manual/en/function.mail.php>
	**/
	public static inline function mail(to:String, subject:String, message:String, ?additionalHeaders:String, ?additionalParameters:String):Bool {
		return Global.mail(to, subject, message, additionalHeaders, additionalParameters);
	}

	/**
		Rethrows an exception.
		If `e` is not a value caught in `try...catch` or if called outside of `catch` block, then `e` is thrown as
		a new exception.
	**/
	extern public static inline function rethrow(e:Dynamic) {
		if (Syntax.code("isset($__hx__caught_e, $__hx__real_e)") && e == Syntax.code("$__hx__real_e")) {
			Syntax.code("throw $__hx__caught_e");
		}
		throw e;
	}

	/**
		Tries to load all compiled php files and returns list of types.
	**/
	public static function getClasses():Dynamic {
		if (!loaded) {
			loaded = true;
			var reflection = new ReflectionClass(Boot.getPhpName('php.Boot'));
			loadLib(Global.dirname(reflection.getFileName(), 2));
		}

		var result:Dynamic = {};
		Syntax.foreach(Boot.getRegisteredAliases(), function(phpName:String, haxeName:String) {
			var parts = haxeName.split('.');
			var obj = result;
			while (parts.length > 1) {
				var pack = parts.shift();
				if (Syntax.field(obj, pack) == null) {
					Syntax.setField(obj, pack, {});
				}
				obj = Syntax.field(obj, pack);
			}
			Syntax.setField(obj, parts[0], Boot.getClass(phpName));
		});

		return result;
	}

	static var loaded:Bool = false;

	/**
		Loads types defined in the specified directory.
	**/
	public static function loadLib(pathToLib:String):Void {
		var absolutePath = Global.realpath(pathToLib);
		if (absolutePath == false)
			throw 'Failed to read path: $pathToLib';
		Syntax.foreach(Global.glob('$absolutePath/*.php'), function(_, fileName) {
			if (!Global.is_dir(fileName)) {
				Global.require_once(fileName);
			}
		});
		Syntax.foreach(Global.glob('$absolutePath/*', Const.GLOB_ONLYDIR), function(_, dirName) {
			loadLib(dirName);
		});
	}
}
