import com.ibm.icu.text.UnicodeSet;
import com.ibm.icu.lang.UCharacter
import com.ibm.icu.util.VersionInfo
import java.nio.file.*

def outputFile = Paths.get(args[0])

StringBuilder sb = new StringBuilder()
[ "Emoji", "Emoji_Modifier", "Emoji_Modifier_Base", "Extended_Pictographic" ].each { setName ->
  UnicodeSet set = new UnicodeSet("[:" + setName + ":]")
  sb.append(setName + " = [")
  for (UnicodeSet.EntryRange range : set.ranges()) {
    if (range.codepoint == range.codepointEnd) {
      sb.append("\\u{" + Integer.toHexString(range.codepoint).toUpperCase(Locale.ROOT) + "}")
    } else {
      sb.append("\\u{" + Integer.toHexString(range.codepoint).toUpperCase(Locale.ROOT) + "}-\\u{" + Integer.toHexString(range.codepointEnd).toUpperCase(Locale.ROOT) + "}")
    }
  }
  sb.append("]\n")
}

def icuVersion = VersionInfo.ICU_VERSION.toString()
def unicodeVersion = UCharacter.getUnicodeVersion().toString()

def code = """
// DO NOT EDIT THIS FILE! Use "gradlew generateEmojiProperties" to recreate.
// The data was generated using ICU4J v${icuVersion}, unicode version: ${unicodeVersion}.

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

${sb.toString()}
"""
outputFile.setText(code, "UTF-8")