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/*
 * Copyright 2015 Austin Keener, Michael Ritter, Florian Spieß, and the JDA contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.dv8tion.jda.internal.utils;

import gnu.trove.map.TLongObjectMap;
import gnu.trove.map.hash.TLongObjectHashMap;
import net.dv8tion.jda.api.utils.data.DataArray;
import net.dv8tion.jda.api.utils.data.DataObject;

import javax.annotation.Nullable;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAccessor;
import java.util.*;
import java.util.function.Consumer;
import java.util.function.ToLongFunction;
import java.util.stream.Collector;
import java.util.stream.Collectors;

/**
 * This class has major inspiration from Lang 3
 *
 * 

Specifically StringUtils.java and ExceptionUtils.java */ public final class Helpers { private static final ZoneOffset OFFSET = ZoneOffset.of("+00:00"); @SuppressWarnings("rawtypes") private static final Consumer EMPTY_CONSUMER = (v) -> {}; @SuppressWarnings("unchecked") public static Consumer emptyConsumer() { return (Consumer) EMPTY_CONSUMER; } public static OffsetDateTime toOffset(long instant) { return OffsetDateTime.ofInstant(Instant.ofEpochMilli(instant), OFFSET); } public static long toTimestamp(String iso8601String) { TemporalAccessor joinedAt = DateTimeFormatter.ISO_OFFSET_DATE_TIME.parse(iso8601String); return Instant.from(joinedAt).toEpochMilli(); } public static OffsetDateTime toOffsetDateTime(@Nullable TemporalAccessor temporal) { if (temporal == null) { return null; } else if (temporal instanceof OffsetDateTime) { return (OffsetDateTime) temporal; } else { ZoneOffset offset; try { offset = ZoneOffset.from(temporal); } catch (DateTimeException ignore) { offset = ZoneOffset.UTC; } try { LocalDateTime ldt = LocalDateTime.from(temporal); return OffsetDateTime.of(ldt, offset); } catch (DateTimeException ignore) { try { Instant instant = Instant.from(temporal); return OffsetDateTime.ofInstant(instant, offset); } catch (DateTimeException ex) { throw new DateTimeException("Unable to obtain OffsetDateTime from TemporalAccessor: " + temporal + " of type " + temporal.getClass().getName(), ex); } } } } // locale-safe String#format public static String format(String format, Object... args) { return String.format(Locale.ROOT, format, args); } // ## StringUtils ## public static boolean isEmpty(final CharSequence seq) { return seq == null || seq.length() == 0; } public static boolean containsWhitespace(final CharSequence seq) { if (isEmpty(seq)) return false; for (int i = 0; i < seq.length(); i++) { if (Character.isWhitespace(seq.charAt(i))) return true; } return false; } public static boolean isBlank(final CharSequence seq) { if (isEmpty(seq)) return true; for (int i = 0; i < seq.length(); i++) { if (!Character.isWhitespace(seq.charAt(i))) return false; } return true; } public static int countMatches(final CharSequence seq, final char c) { if (isEmpty(seq)) return 0; int count = 0; for (int i = 0; i < seq.length(); i++) { if (seq.charAt(i) == c) count++; } return count; } public static String truncate(final String input, final int maxWidth) { if (input == null) return null; Checks.notNegative(maxWidth, "maxWidth"); if (input.length() <= maxWidth) return input; if (maxWidth == 0) return ""; return input.substring(0, maxWidth); } public static String rightPad(final String input, final int size) { int pads = size - input.length(); if (pads <= 0) return input; StringBuilder out = new StringBuilder(input); for (int i = pads; i > 0; i--) out.append(' '); return out.toString(); } public static String leftPad(final String input, final int size) { int pads = size - input.length(); if (pads <= 0) return input; StringBuilder out = new StringBuilder(); for (int i = pads; i > 0; i--) out.append(' '); return out.append(input).toString(); } public static boolean isNumeric(final String input) { if (isEmpty(input)) return false; for (char c : input.toCharArray()) { if (!Character.isDigit(c)) return false; } return true; } public static int codePointLength(final CharSequence string) { return (int) string.codePoints().count(); } public static String[] split(String input, String match) { List out = new ArrayList<>(); int i = 0; while (i < input.length()) { int j = input.indexOf(match, i); if (j == -1) { out.add(input.substring(i)); break; } out.add(input.substring(i, j)); i = j + match.length(); } return out.toArray(new String[0]); } // ## CollectionUtils ## public static boolean deepEquals(Collection first, Collection second) { if (first == second) return true; if (first == null || second == null || first.size() != second.size()) return false; for (Iterator itFirst = first.iterator(), itSecond = second.iterator(); itFirst.hasNext(); ) { Object elementFirst = itFirst.next(); Object elementSecond = itSecond.next(); if (!Objects.equals(elementFirst, elementSecond)) return false; } return true; } public static boolean deepEqualsUnordered(Collection first, Collection second) { if (first == second) return true; if (first == null || second == null) return false; return first.size() == second.size() && second.containsAll(first); } public static > EnumSet copyEnumSet(Class clazz, Collection col) { return col == null || col.isEmpty() ? EnumSet.noneOf(clazz) : EnumSet.copyOf(col); } @SafeVarargs public static Set setOf(T... elements) { Set set = new HashSet<>(elements.length); Collections.addAll(set, elements); return set; } @SafeVarargs public static List listOf(T... elements) { return Collections.unmodifiableList(Arrays.asList(elements)); } public static TLongObjectMap convertToMap(ToLongFunction getId, DataArray array) { TLongObjectMap map = new TLongObjectHashMap<>(); for (int i = 0; i < array.length(); i++) { DataObject obj = array.getObject(i); long objId = getId.applyAsLong(obj); map.put(objId, obj); } return map; } // ## ExceptionUtils ## public static T appendCause(T throwable, Throwable cause) { Throwable t = throwable; while (t.getCause() != null) t = t.getCause(); t.initCause(cause); return throwable; } public static boolean hasCause(Throwable throwable, Class cause) { Throwable cursor = throwable; while (cursor != null) { if (cause.isInstance(cursor)) return true; cursor = cursor.getCause(); } return false; } public static Collector> toUnmodifiableList() { return Collectors.collectingAndThen(Collectors.toList(), Collections::unmodifiableList); } public static Collector toDataArray() { return Collector.of(DataArray::empty, DataArray::add, DataArray::addAll); } }





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