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

import static com.oracle.truffle.js.lang.JavaScriptLanguage.ID;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

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

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

public class ParseIntTest {

    @Test
    public void testJSONParseNumber() {
        try (Context context = JSTest.newContextBuilder().build()) {
            Value result;
            result = context.eval(ID, "parseInt('-0')");
            assertTrue(result.fitsInDouble());
            assertEquals(Double.valueOf(-0.0), Double.valueOf(result.asDouble()));
            result = context.eval(ID, "parseInt(new String('-0'))");
            assertTrue(result.fitsInDouble());
            assertEquals(Double.valueOf(-0.0), Double.valueOf(result.asDouble()));
        }
    }

    @Test
    public void testSpecializations() {
        try (Context context = JSTest.newContextBuilder().build()) {
            Value result;

            // parseIntStringInt10
            result = context.eval(ID, "parseInt('12345', 10)");
            assertTrue(result.fitsInInt());
            assertEquals(12345, result.asInt());

            result = context.eval(ID, "parseInt('3', 10)"); // check short input
            assertTrue(result.fitsInInt());
            assertEquals(3, result.asInt());

            // parseIntStringInt10 with whitespace
            result = context.eval(ID, "parseInt('\t 12345 \t', 10)");
            assertTrue(result.fitsInInt());
            assertEquals(12345, result.asInt());

            // parseIntGeneric
            result = context.eval(ID, "parseInt('12345', 9)");
            assertTrue(result.fitsInInt());
            assertEquals(8303, result.asInt());

            // parseIntGeneric with whitespace
            result = context.eval(ID, "parseInt('\t 12345 \t', 9)");
            assertTrue(result.fitsInInt());
            assertEquals(8303, result.asInt());

            // parseIntGeneric with whitespace and hexStart
            result = context.eval(ID, "parseInt('\t -0xABCDEF \t', 16)");
            assertTrue(result.fitsInInt());
            assertEquals(-11259375, result.asInt());

            result = context.eval(ID, "parseInt('\t 3 \t', 16)"); // check short input
            assertTrue(result.fitsInInt());
            assertEquals(3, result.asInt());

            // parseIntGeneric with hexStart
            result = context.eval(ID, "parseInt('  0xA  ', 16)");
            assertTrue(result.fitsInInt());
            assertEquals(10, result.asInt());
        }
    }

    @Test
    public void testInvalid() {
        try (Context context = JSTest.newContextBuilder().build()) {
            Value result;

            result = context.eval(ID, "parseInt('', 10)");
            assertTrue(result.fitsInDouble());
            assertTrue(Double.isNaN(result.asDouble()));

            result = context.eval(ID, "parseInt('0x  ', 16)");
            assertTrue(result.fitsInDouble());
            assertTrue(Double.isNaN(result.asDouble()));

            // identify valid part of string
            result = context.eval(ID, "parseInt('  1234---  ', 10)");
            assertTrue(result.fitsInInt());
            assertEquals(1234, result.asInt());
        }
    }

    @Test
    public void testLongs() {
        try (Context context = JSTest.newContextBuilder().build()) {
            assertEquals(-1234567890L, parseInt("-1234567890", 10, context).asLong());
            assertEquals(1234567890L, parseInt("+1234567890", 10, context).asLong());
            assertEquals(1234567890L, parseInt("1234567890", 10, context).asLong());
            assertEquals(162254319L, parseInt("9abcdef", 16, context).asLong());

            assertEquals(9223372036854778000d, parseInt("1104332401304422434310342411", 5, context).asDouble(), 0.000001);
        }
    }

    @Test
    public void testNegativeZero() {
        try (Context context = JSTest.newContextBuilder().build()) {
            assertTrue(JSRuntime.isNegativeZero(parseInt("-0.000001", 10, context).asDouble()));
            assertTrue(JSRuntime.isNegativeZero(parseInt("-0.0000000000000001", 10, context).asDouble()));
            assertTrue(JSRuntime.isNegativeZero(parseInt("-0", 10, context).asDouble()));
            assertTrue(JSRuntime.isNegativeZero(parseInt("-000000000000000000", 16, context).asDouble()));
        }
    }

    private static Value parseInt(String string, int radix, Context context) {
        return context.eval(ID, "parseInt('" + string + "', " + radix + ");");
    }

    @Test
    public void testGR25478() {
        try (Context context = JSTest.newContextBuilder().build()) {
            Value result = context.eval(ID, "parseInt('18446462598732840000\" at LowLevelInterpreter.asm:194', 10)");
            assertTrue(result.fitsInDouble());
            assertEquals(18446462598732840000d, result.asDouble(), 0.000001);

            result = context.eval(ID, "parseInt('-10000000000000', 10)");
            assertTrue(result.fitsInDouble());
            assertEquals(-10000000000000d, result.asDouble(), 0.000001);

        }
    }
}