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package com.oracle.truffle.js.test.polyglot;

import org.graalvm.polyglot.Context;
import org.graalvm.polyglot.HostAccess;
import org.graalvm.polyglot.Value;
import org.junit.Assert;
import org.junit.Test;

import com.oracle.truffle.js.test.JSTest;

Testing behavior around Maps, Arrays, Lists and the conversion between them.
Similar tests for the ScriptEngine are in com.oracle.truffle.js.scriptengine.test.MapTest.
/**
 * Testing behavior around Maps, Arrays, Lists and the conversion between them.
 *
 * Similar tests for the ScriptEngine are in com.oracle.truffle.js.scriptengine.test.MapTest.
 */
public class MapTest {

    @Test
    /**
     * Regression test for github.com/graalvm/graaljs/issues/214 is actually working when a Context
     * is used.
     */
    public void testJavaScriptArrayViaContext() {
        try (Context context = JSTest.newContextBuilder("js").build()) {
            Value result = context.eval("js", "['a', 'b', 'c']");

            Assert.assertTrue(result.hasArrayElements());
            Assert.assertEquals(3, result.getArraySize());
            Assert.assertEquals("a", result.getArrayElement(0).asString());
            Assert.assertEquals("b", result.getArrayElement(1).asString());
            Assert.assertEquals("c", result.getArrayElement(2).asString());
        }
    }

    @Test
    /**
     * Regression test for github.com/graalvm/graaljs/issues/211.
     *
     * JavaScript's Map type is no supported type in interop, so it does not automatically translate
     * to a Java Map.
     */
    public void testJavaScriptMapNoInterop() {
        String sourceJSMap = "var map = new Map(); map.set('mapkey', 'mapvalue'); map;";
        String sourceObject = "var obj = {}; obj.objkey = 'objvalue'; obj;";

        try (Context context = JSTest.newContextBuilder("js").build()) {
            Value jsMap = context.eval("js", sourceJSMap);

            // JSMap is no interop type, so getMember fails
            Assert.assertEquals(null, jsMap.getMember("mapkey"));
            // instead, you need to invoke `get`
            Assert.assertEquals("mapvalue", jsMap.invokeMember("get", "mapkey").asString());

            Value jsObj = context.eval("js", sourceObject);
            // works as expected on plain Object
            Assert.assertEquals("objvalue", jsObj.getMember("objkey").asString());
        }
    }

    @Test
    /**
     * Regression test for github.com/graalvm/graaljs/issues/203.
     *
     * According to issue, iteration over a Java HashMap returns wrong value. Actually, the problem
     * is that the property access is not mapped to Map.get().
     */
    public void testMapIterationContext() {
        String source = "var HashMap = Java.type('java.util.HashMap'); \n" +
                        "var map = new HashMap();\n" +
                        "map.put(1, 'A');\n" +
                        "map.get(1);\n" +
                        "var str='';\n" +
                        "for (var key in map) {\n" +
                        "    str += key;\n" +
                        "    str += map[key];\n" +
                        "    str += map.get(key);\n" +
                        "}; str;";
        try (Context context = JSTest.newContextBuilder("js").allowHostAccess(HostAccess.ALL).allowHostClassLookup(c -> true).build()) {
            Value result = context.eval("js", source);
            Assert.assertEquals("1undefinedA", result.asString());
        }
    }

    @Test
    public void testListIterationContext() {
        String source = "var ArrayList = Java.type('java.util.ArrayList');\n" +
                        "var list = new ArrayList();\n" +
                        "list.add(42);\n" +
                        "list.add(\"ab\");\n" +
                        "list.add({});\n" +
                        "var str='';\n" +
                        "for (var idx in list) {\n" +
                        "    str += '|'+idx;\n" +
                        "    str += ''+list[idx];\n" +
                        "}; str;";
        try (Context context = JSTest.newContextBuilder("js").allowHostAccess(HostAccess.ALL).allowHostClassLookup(c -> true).build()) {
            Value result = context.eval("js", source);
            Assert.assertEquals("|042|1ab|2[object Object]", result.asString());
        }
    }

}