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/*
 * SonarQube
 * Copyright (C) 2009-2016 SonarSource SA
 * mailto:contact AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.server.es;

import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.common.settings.ImmutableSettings;

class DefaultIndexSettings {

  private DefaultIndexSettings() {
    // only static stuff
  }

  static ImmutableSettings.Builder defaults() {
    return ImmutableSettings.builder()
      .put(IndexMetaData.SETTING_NUMBER_OF_SHARDS, 1)
      .put(IndexMetaData.SETTING_NUMBER_OF_REPLICAS, 0)
      .put("index.refresh_interval", "30s")
      .put("index.mapper.dynamic", false)

      // Sortable text analyzer
      .put("index.analysis.analyzer.sortable.type", "custom")
      .put("index.analysis.analyzer.sortable.tokenizer", "keyword")
      .putArray("index.analysis.analyzer.sortable.filter", "trim", "lowercase")

      // Edge NGram index-analyzer
      .put("index.analysis.analyzer.index_grams.type", "custom")
      .put("index.analysis.analyzer.index_grams.tokenizer", "whitespace")
      .putArray("index.analysis.analyzer.index_grams.filter", "trim", "lowercase", "gram_filter")

      // Edge NGram search-analyzer
      .put("index.analysis.analyzer.search_grams.type", "custom")
      .put("index.analysis.analyzer.search_grams.tokenizer", "whitespace")
      .putArray("index.analysis.analyzer.search_grams.filter", "trim", "lowercase")

      // Word index-analyzer
      .put("index.analysis.analyzer.index_words.type", "custom")
      .put("index.analysis.analyzer.index_words.tokenizer", "standard")
      .putArray("index.analysis.analyzer.index_words.filter",
        "standard", "word_filter", "lowercase", "stop", "asciifolding", "porter_stem")

      // Word search-analyzer
      .put("index.analysis.analyzer.search_words.type", "custom")
      .put("index.analysis.analyzer.search_words.tokenizer", "standard")
      .putArray("index.analysis.analyzer.search_words.filter",
        "standard", "lowercase", "stop", "asciifolding", "porter_stem")

      // English HTML analyzer
      .put("index.analysis.analyzer.html_analyzer.type", "custom")
      .put("index.analysis.analyzer.html_analyzer.tokenizer", "standard")
      .putArray("index.analysis.analyzer.html_analyzer.filter",
        "standard", "lowercase", "stop", "asciifolding", "porter_stem")
      .putArray("index.analysis.analyzer.html_analyzer.char_filter", "html_strip")

      // Edge NGram filter
      .put("index.analysis.filter.gram_filter.type", "edgeNGram")
      .put("index.analysis.filter.gram_filter.min_gram", 2)
      .put("index.analysis.filter.gram_filter.max_gram", 15)
      .putArray("index.analysis.filter.gram_filter.token_chars", "letter", "digit", "punctuation", "symbol")

      // Word filter
      .put("index.analysis.filter.word_filter.type", "word_delimiter")
      .put("index.analysis.filter.word_filter.generate_word_parts", true)
      .put("index.analysis.filter.word_filter.catenate_words", true)
      .put("index.analysis.filter.word_filter.catenate_numbers", true)
      .put("index.analysis.filter.word_filter.catenate_all", true)
      .put("index.analysis.filter.word_filter.split_on_case_change", true)
      .put("index.analysis.filter.word_filter.preserve_original", true)
      .put("index.analysis.filter.word_filter.split_on_numerics", true)
      .put("index.analysis.filter.word_filter.stem_english_possessive", true)

      // Path Analyzer
      .put("index.analysis.analyzer.path_analyzer.type", "custom")
      .put("index.analysis.analyzer.path_analyzer.tokenizer", "path_hierarchy")

      // UUID Module analyzer
      .put("index.analysis.tokenizer.dot_tokenizer.type", "pattern")
      .put("index.analysis.tokenizer.dot_tokenizer.pattern", "\\.")
      .put("index.analysis.analyzer.uuid_analyzer.type", "custom")
      .putArray("index.analysis.analyzer.uuid_analyzer.filter", "trim")
      .put("index.analysis.analyzer.uuid_analyzer.tokenizer", "dot_tokenizer");

  }
}