/*
 * Copyright (c) 2007-present, Stephen Colebourne & Michael Nascimento Santos
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 *  * Neither the name of JSR-310 nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.threeten.bp.format;

import static org.testng.Assert.assertEquals;
import static org.testng.Assert.fail;
import static org.threeten.bp.temporal.ChronoField.NANO_OF_SECOND;
import static org.threeten.bp.temporal.ChronoField.SECOND_OF_MINUTE;

import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import org.threeten.bp.DateTimeException;
import org.threeten.bp.LocalTime;
import org.threeten.bp.format.DateTimeFormatterBuilder.FractionPrinterParser;
import org.threeten.bp.temporal.MockFieldValue;
import org.threeten.bp.temporal.TemporalField;

/**
 * Test FractionPrinterParser.
 */
@Test
public class TestFractionPrinterParser extends AbstractTestPrinterParser {

    //-----------------------------------------------------------------------
    // print
    //-----------------------------------------------------------------------
    @Test(expectedExceptions=DateTimeException.class)
    public void test_print_emptyCalendrical() throws Exception {
        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, 0, 9, true);
        pp.print(printEmptyContext, buf);
    }

    public void test_print_append() throws Exception {
        printContext.setDateTime(LocalTime.of(12, 30, 40, 3));
        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, 0, 9, true);
        buf.append("EXISTING");
        pp.print(printContext, buf);
        assertEquals(buf.toString(), "EXISTING.000000003");
    }

    //-----------------------------------------------------------------------
    @DataProvider(name="Nanos")
    Object[][] provider_nanos() {
        return new Object[][] {
            {0, 9, 0,           ""},
            {0, 9, 2,           ".000000002"},
            {0, 9, 20,          ".00000002"},
            {0, 9, 200,         ".0000002"},
            {0, 9, 2000,        ".000002"},
            {0, 9, 20000,       ".00002"},
            {0, 9, 200000,      ".0002"},
            {0, 9, 2000000,     ".002"},
            {0, 9, 20000000,    ".02"},
            {0, 9, 200000000,   ".2"},
            {0, 9, 1,           ".000000001"},
            {0, 9, 12,          ".000000012"},
            {0, 9, 123,         ".000000123"},
            {0, 9, 1234,        ".000001234"},
            {0, 9, 12345,       ".000012345"},
            {0, 9, 123456,      ".000123456"},
            {0, 9, 1234567,     ".001234567"},
            {0, 9, 12345678,    ".012345678"},
            {0, 9, 123456789,   ".123456789"},

            {1, 9, 0,           ".0"},
            {1, 9, 2,           ".000000002"},
            {1, 9, 20,          ".00000002"},
            {1, 9, 200,         ".0000002"},
            {1, 9, 2000,        ".000002"},
            {1, 9, 20000,       ".00002"},
            {1, 9, 200000,      ".0002"},
            {1, 9, 2000000,     ".002"},
            {1, 9, 20000000,    ".02"},
            {1, 9, 200000000,   ".2"},

            {2, 3, 0,           ".00"},
            {2, 3, 2,           ".000"},
            {2, 3, 20,          ".000"},
            {2, 3, 200,         ".000"},
            {2, 3, 2000,        ".000"},
            {2, 3, 20000,       ".000"},
            {2, 3, 200000,      ".000"},
            {2, 3, 2000000,     ".002"},
            {2, 3, 20000000,    ".02"},
            {2, 3, 200000000,   ".20"},
            {2, 3, 1,           ".000"},
            {2, 3, 12,          ".000"},
            {2, 3, 123,         ".000"},
            {2, 3, 1234,        ".000"},
            {2, 3, 12345,       ".000"},
            {2, 3, 123456,      ".000"},
            {2, 3, 1234567,     ".001"},
            {2, 3, 12345678,    ".012"},
            {2, 3, 123456789,   ".123"},

            {6, 6, 0,           ".000000"},
            {6, 6, 2,           ".000000"},
            {6, 6, 20,          ".000000"},
            {6, 6, 200,         ".000000"},
            {6, 6, 2000,        ".000002"},
            {6, 6, 20000,       ".000020"},
            {6, 6, 200000,      ".000200"},
            {6, 6, 2000000,     ".002000"},
            {6, 6, 20000000,    ".020000"},
            {6, 6, 200000000,   ".200000"},
            {6, 6, 1,           ".000000"},
            {6, 6, 12,          ".000000"},
            {6, 6, 123,         ".000000"},
            {6, 6, 1234,        ".000001"},
            {6, 6, 12345,       ".000012"},
            {6, 6, 123456,      ".000123"},
            {6, 6, 1234567,     ".001234"},
            {6, 6, 12345678,    ".012345"},
            {6, 6, 123456789,   ".123456"},
       };
    }

    @Test(dataProvider="Nanos")
    public void test_print_nanos(int minWidth, int maxWidth, int value, String result) throws Exception {
        printContext.setDateTime(new MockFieldValue(NANO_OF_SECOND, value));
        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, minWidth, maxWidth, true);
        pp.print(printContext, buf);
        if (result == null) {
            fail("Expected exception");
        }
        assertEquals(buf.toString(), result);
    }

    @Test(dataProvider="Nanos")
    public void test_print_nanos_noDecimalPoint(int minWidth, int maxWidth, int value, String result) throws Exception {
        printContext.setDateTime(new MockFieldValue(NANO_OF_SECOND, value));
        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, minWidth, maxWidth, false);
        pp.print(printContext, buf);
        if (result == null) {
            fail("Expected exception");
        }
        assertEquals(buf.toString(), (result.startsWith(".") ? result.substring(1) : result));
    }

    //-----------------------------------------------------------------------
    @DataProvider(name="Seconds")
    Object[][] provider_seconds() {
        return new Object[][] {
            {0, 9, 0,  ""},
            {0, 9, 3,  ".05"},
            {0, 9, 6,  ".1"},
            {0, 9, 9,  ".15"},
            {0, 9, 12, ".2"},
            {0, 9, 15, ".25"},
            {0, 9, 30, ".5"},
            {0, 9, 45, ".75"},

            {2, 2, 0,  ".00"},
            {2, 2, 3,  ".05"},
            {2, 2, 6,  ".10"},
            {2, 2, 9,  ".15"},
            {2, 2, 12, ".20"},
            {2, 2, 15, ".25"},
            {2, 2, 30, ".50"},
            {2, 2, 45, ".75"},
        };
    }

    @Test(dataProvider="Seconds")
    public void test_print_seconds(int minWidth, int maxWidth, int value, String result) throws Exception {
        printContext.setDateTime(new MockFieldValue(SECOND_OF_MINUTE, value));
        FractionPrinterParser pp = new FractionPrinterParser(SECOND_OF_MINUTE, minWidth, maxWidth, true);
        pp.print(printContext, buf);
        if (result == null) {
            fail("Expected exception");
        }
        assertEquals(buf.toString(), result);
    }

    @Test(dataProvider="Seconds")
    public void test_print_seconds_noDecimalPoint(int minWidth, int maxWidth, int value, String result) throws Exception {
        printContext.setDateTime(new MockFieldValue(SECOND_OF_MINUTE, value));
        FractionPrinterParser pp = new FractionPrinterParser(SECOND_OF_MINUTE, minWidth, maxWidth, false);
        pp.print(printContext, buf);
        if (result == null) {
            fail("Expected exception");
        }
        assertEquals(buf.toString(), (result.startsWith(".") ? result.substring(1) : result));
    }

    //-----------------------------------------------------------------------
    // parse
    //-----------------------------------------------------------------------
    @Test(dataProvider="Nanos")
    public void test_reverseParse(int minWidth, int maxWidth, int value, String result) throws Exception {
        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, minWidth, maxWidth, true);
        int newPos = pp.parse(parseContext, result, 0);
        assertEquals(newPos, result.length());
        int expectedValue = fixParsedValue(maxWidth, value);
        assertParsed(parseContext, NANO_OF_SECOND, value == 0 && minWidth == 0 ? null : (long) expectedValue);
    }

    @Test(dataProvider="Nanos")
    public void test_reverseParse_noDecimalPoint(int minWidth, int maxWidth, int value, String result) throws Exception {
        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, minWidth, maxWidth, false);
        int newPos = pp.parse(parseContext, result, (result.startsWith(".") ? 1 : 0));
        assertEquals(newPos, result.length());
        int expectedValue = fixParsedValue(maxWidth, value);
        assertParsed(parseContext, NANO_OF_SECOND, value == 0 && minWidth == 0 ? null : (long) expectedValue);
    }

    @Test(dataProvider="Nanos")
    public void test_reverseParse_followedByNonDigit(int minWidth, int maxWidth, int value, String result) throws Exception {
        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, minWidth, maxWidth, true);
        int newPos = pp.parse(parseContext, result + " ", 0);
        assertEquals(newPos, result.length());
        int expectedValue = fixParsedValue(maxWidth, value);
        assertParsed(parseContext, NANO_OF_SECOND, value == 0 && minWidth == 0 ? null : (long) expectedValue);
    }

//    @Test(dataProvider="Nanos")
//    public void test_reverseParse_followedByNonDigit_noDecimalPoint(int minWidth, int maxWidth, int value, String result) throws Exception {
//        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, minWidth, maxWidth, false);
//        int newPos = pp.parse(parseContext, result + " ", (result.startsWith(".") ? 1 : 0));
//        assertEquals(newPos, result.length());
//        int expectedValue = fixParsedValue(maxWidth, value);
//        assertParsed(parseContext, NANO_OF_SECOND, value == 0 && minWidth == 0 ? null : (long) expectedValue);
//    }

    @Test(dataProvider="Nanos")
    public void test_reverseParse_preceededByNonDigit(int minWidth, int maxWidth, int value, String result) throws Exception {
        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, minWidth, maxWidth, true);
        int newPos = pp.parse(parseContext, " " + result, 1);
        assertEquals(newPos, result.length() + 1);
        int expectedValue = fixParsedValue(maxWidth, value);
        assertParsed(parseContext, NANO_OF_SECOND, value == 0 && minWidth == 0 ? null : (long) expectedValue);
    }

    private int fixParsedValue(int maxWidth, int value) {
        if (maxWidth < 9) {
            int power = (int) Math.pow(10, (9 - maxWidth));
            value = (value / power) * power;
        }
        return value;
    }

    @Test(dataProvider="Seconds")
    public void test_reverseParse_seconds(int minWidth, int maxWidth, int value, String result) throws Exception {
        FractionPrinterParser pp = new FractionPrinterParser(SECOND_OF_MINUTE, minWidth, maxWidth, true);
        int newPos = pp.parse(parseContext, result, 0);
        assertEquals(newPos, result.length());
        assertParsed(parseContext, SECOND_OF_MINUTE, value == 0 && minWidth == 0 ? null : (long) value);
    }

    private void assertParsed(DateTimeParseContext context, TemporalField field, Long value) {
        if (value == null) {
            assertEquals(context.getParsed(field), null);
        } else {
            assertEquals(context.getParsed(field), value);
        }
    }

    //-----------------------------------------------------------------------
    @DataProvider(name="ParseNothing")
    Object[][] provider_parseNothing() {
        return new Object[][] {
            {new FractionPrinterParser(NANO_OF_SECOND, 3, 6, true), "", 0, ~0},
            {new FractionPrinterParser(NANO_OF_SECOND, 3, 6, true), "A", 0, ~0},
            {new FractionPrinterParser(NANO_OF_SECOND, 3, 6, true), ".", 0, ~1},
            {new FractionPrinterParser(NANO_OF_SECOND, 3, 6, true), ".5", 0, ~1},
            {new FractionPrinterParser(NANO_OF_SECOND, 3, 6, true), ".51", 0, ~1},
            {new FractionPrinterParser(NANO_OF_SECOND, 3, 6, true), ".A23456", 0, ~1},
            {new FractionPrinterParser(NANO_OF_SECOND, 3, 6, true), ".1A3456", 0, ~1},
        };
    }

    @Test(dataProvider = "ParseNothing")
    public void test_parse_nothing(FractionPrinterParser pp, String text, int pos, int expected) {
        int newPos = pp.parse(parseContext, text, pos);
        assertEquals(newPos, expected);
        assertEquals(parseContext.getParsed(NANO_OF_SECOND), null);
    }

    //-----------------------------------------------------------------------
    public void test_toString() throws Exception {
        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, 3, 6, true);
        assertEquals(pp.toString(), "Fraction(NanoOfSecond,3,6,DecimalPoint)");
    }

    public void test_toString_noDecimalPoint() throws Exception {
        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, 3, 6, false);
        assertEquals(pp.toString(), "Fraction(NanoOfSecond,3,6)");
    }

}
