/*jshint globalstrict:false, strict:false, maxlen: 500 */
/*global assertUndefined, assertEqual, assertTrue, assertFalse, fail, db._query */

////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2017 ArangoDB GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Andrey Abramov
/// @author Vasiliy Nabatchikov
////////////////////////////////////////////////////////////////////////////////

var jsunity = require("jsunity");
var db = require("@arangodb").db;
var analyzers = require("@arangodb/analyzers");

////////////////////////////////////////////////////////////////////////////////
/// @brief test suite
////////////////////////////////////////////////////////////////////////////////

function iResearchFeatureAqlTestSuite () {
  return {
    setUpAll : function () {
    },

    tearDownAll : function () {
    },

////////////////////////////////////////////////////////////////////////////////
/// @brief IResearchAnalyzerFeature tests
////////////////////////////////////////////////////////////////////////////////

    testAnalyzers: function() {
      let oldList = analyzers.toArray();
      assertTrue(Array === oldList.constructor);

      // creation
      analyzers.save("testAnalyzer", "identity", "test properties", [ "frequency" ]);

      // properties
      let analyzer = analyzers.analyzer(db._name() + "::testAnalyzer");
      assertTrue(null !== analyzer);
      assertEqual(db._name() + "::testAnalyzer", analyzer.name());
      assertEqual("identity", analyzer.type());
      assertEqual("test properties", analyzer.properties());
      assertTrue(Array === analyzer.features().constructor);
      assertEqual(1, analyzer.features().length);
      assertEqual([ "frequency" ], analyzer.features());
      analyzer = undefined; // release reference

      // listing
      let list = analyzers.toArray();
      assertTrue(Array === list.constructor);
      assertEqual(oldList.length + 1, list.length);
      list = undefined; // release reference

      // force server-side V8 garbage collection
      if (db._connection !== undefined) { // client test
        let url = require('internal').arango.getEndpoint().replace('tcp', 'http');
        url += '/_admin/execute?returnAsJSON=true';
        let options = require('@arangodb/process-utils').makeAuthorizationHeaders({
          username: 'root',
          password: ''
        });
        options.method = 'POST';
        require('internal').download(url, 'require("internal").wait(0.1, true);', options);
      } else {
        require("internal").wait(0.1, true);
      }

      // removal
      analyzers.remove(db._name() + "::testAnalyzer");
      assertTrue(null === analyzers.analyzer(db._name() + "::testAnalyzer"));
      assertEqual(oldList.length, analyzers.toArray().length);
    },

   testAnalyzersFeatures: function() {
      try {
       analyzers.save("testAnalyzer", "identity", "test properties", [ "unknown" ]);
       fail(); // unsupported feature
      } catch(e) {
      }

      try {
       analyzers.save("testAnalyzer", "identity", "test properties", [ "position" ]);
       fail(); // feature with dependency
      } catch(e) {
      }

      // feature with dependency satisfied
      analyzers.save("testAnalyzer", "identity", "test properties", [ "frequency", "position" ]);
      analyzers.remove("testAnalyzer", true);
    },

    testAnalyzersPrefix: function() {
      let dbName = "TestDB";

      try { db._dropDatabase(dbName); } catch (e) {}
      db._createDatabase(dbName);
      db._useDatabase(dbName);

      let oldList = analyzers.toArray();
      assertTrue(Array === oldList.constructor);

      // creation
      db._useDatabase("_system");
      analyzers.save("testAnalyzer", "identity", "system properties", [ "frequency" ]);
      db._useDatabase(dbName);
      analyzers.save("testAnalyzer", "identity", "user properties", [ "norm" ]);

      // retrieval (system)
      db._useDatabase("_system");

      {
        let analyzer = analyzers.analyzer("testAnalyzer");
        assertTrue(null !== analyzer);
        assertEqual(db._name() + "::testAnalyzer", analyzer.name());
        assertEqual("identity", analyzer.type());
        assertEqual("system properties", analyzer.properties());
        assertTrue(Array === analyzer.features().constructor);
        assertEqual(1, analyzer.features().length);
        assertEqual([ "frequency" ], analyzer.features());
      }

      {
        let analyzer = analyzers.analyzer(dbName + "::testAnalyzer");
        assertTrue(null !== analyzer);
        assertEqual(dbName + "::testAnalyzer", analyzer.name());
        assertEqual("identity", analyzer.type());
        assertEqual("user properties", analyzer.properties());
        assertTrue(Array === analyzer.features().constructor);
        assertEqual(1, analyzer.features().length);
        assertEqual([ "norm" ], analyzer.features());
      }

      // retrieval (dbName)
      db._useDatabase(dbName);

      {
        let analyzer = analyzers.analyzer("testAnalyzer");
        assertTrue(null !== analyzer);
        assertEqual(db._name() + "::testAnalyzer", analyzer.name());
        assertEqual("identity", analyzer.type());
        assertEqual("user properties", analyzer.properties());
        assertTrue(Array === analyzer.features().constructor);
        assertEqual(1, analyzer.features().length);
        assertEqual([ "norm" ], analyzer.features());
      }

      {
        let analyzer = analyzers.analyzer("::testAnalyzer");
        assertTrue(null !== analyzer);
        assertEqual("_system::testAnalyzer", analyzer.name());
        assertEqual("identity", analyzer.type());
        assertEqual("system properties", analyzer.properties());
        assertTrue(Array === analyzer.features().constructor);
        assertEqual(1, analyzer.features().length);
        assertEqual([ "frequency" ], analyzer.features());
      }

      // listing
      let list = analyzers.toArray();
      assertTrue(Array === list.constructor);
      assertEqual(oldList.length + 2, list.length);

      // removal
      analyzers.remove("testAnalyzer", true);
      assertTrue(null === analyzers.analyzer("testAnalyzer"));
      analyzers.remove("::testAnalyzer", true);
      assertTrue(null === analyzers.analyzer("::testAnalyzer"));
      assertEqual(oldList.length, analyzers.toArray().length);

      db._useDatabase("_system");
      db._dropDatabase(dbName);
   },

////////////////////////////////////////////////////////////////////////////////
/// @brief IResearchFeature tests
////////////////////////////////////////////////////////////////////////////////

    testDefaultAnalyzers : function() {
      // invalid
      {
        try {
          db._query("RETURN TOKENS('a quick brown fox jumps', 'invalid')").toArray();
          fail();
        } catch (err) {
          assertEqual(err.errorNum, require("internal").errors.ERROR_BAD_PARAMETER.code);
        }
      }

      // text_de
      {
        let result = db._query(
          "RETURN TOKENS('a quick brown fox jumps', 'text_de')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "a", "quick", "brown", "fox", "jumps" ], result[0]);
      }

      // text_en
      {
        let result = db._query(
          "RETURN TOKENS('a quick brown fox jumps', 'text_en')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "a", "quick", "brown", "fox", "jump" ], result[0]);
      }

      // text_es
      {
        let result = db._query(
          "RETURN TOKENS('a quick brown fox jumps', 'text_es')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "a", "quick", "brown", "fox", "jumps" ], result[0]);
      }

      // text_fi
      {
        let result = db._query(
          "RETURN TOKENS('a quick brown fox jumps', 'text_fi')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "a", "quick", "brow", "fox", "jumps" ], result[0]);
      }

      // text_fr
      {
        let result = db._query(
          "RETURN TOKENS('a quick brown fox jumps', 'text_fr')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "a", "quick", "brown", "fox", "jump" ], result[0]);
      }

      // text_it
      {
        let result = db._query(
          "RETURN TOKENS('a quick brown fox jumps', 'text_it')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "a", "quick", "brown", "fox", "jumps" ], result[0]);
      }

      // text_nl
      {
        let result = db._query(
          "RETURN TOKENS('a quick brown fox jumps', 'text_nl')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "a", "quick", "brown", "fox", "jump" ], result[0]);
      }

      // text_no
      {
        let result = db._query(
          "RETURN TOKENS('a quick brown fox jumps', 'text_no')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "a", "quick", "brown", "fox", "jump" ], result[0]);
      }

      // text_pt
      {
        let result = db._query(
          "RETURN TOKENS('a quick brown fox jumps', 'text_pt')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "a", "quick", "brown", "fox", "jumps" ], result[0]);
      }

      // text_ru (codepoints)
      {
        let result = db._query(
          "RETURN TOKENS('ArangoDB - \u044D\u0442\u043E \u043C\u043D\u043E\u0433\u043E\u043C\u043E\u0434\u0435\u043B\u044C\u043D\u0430\u044F \u0431\u0430\u0437\u0430 \u0434\u0430\u043D\u043D\u044B\u0445', 'text_ru')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "arangodb", "\u044D\u0442", "\u043C\u043D\u043E\u0433\u043E\u043C\u043E\u0434\u0435\u043B\u044C\u043D", "\u0431\u0430\u0437", "\u0434\u0430\u043D" ], result[0]);
        assertEqual([ "arangodb", "эт", "многомодельн", "баз", "дан" ], result[0]);
      }

      // text_ru (unicode)
      {
        let result = db._query(
          "RETURN TOKENS('ArangoDB - это многомодельная база данных', 'text_ru')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "arangodb", "\u044D\u0442", "\u043C\u043D\u043E\u0433\u043E\u043C\u043E\u0434\u0435\u043B\u044C\u043D", "\u0431\u0430\u0437", "\u0434\u0430\u043D" ], result[0]);
        assertEqual([ "arangodb", "эт", "многомодельн", "баз", "дан" ], result[0]);
      }

      // text_sv
      {
        let result = db._query(
          "RETURN TOKENS('a quick brown fox jumps', 'text_sv')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(5, result[0].length);
        assertEqual([ "a", "quick", "brown", "fox", "jump" ], result[0]);
      }

      // text_zh (codepoints)
      {
        let result = db._query(
           "RETURN TOKENS('ArangoDB \u662F\u4E00\u4E2A\u591A\u6A21\u578B\u6570\u636E\u5E93\u3002', 'text_zh')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(7, result[0].length);
        assertEqual([ "arangodb", "\u662F", "\u4E00\u4E2A", "\u591A", "\u6A21\u578B", "\u6570\u636E", "\u5E93" ], result[0]);
        assertEqual([ "arangodb", "是", "一个", "多", "模型", "数据", "库" ], result[0]);
      }

      // text_zh (unicode)
      {
        let result = db._query(
          "RETURN TOKENS('ArangoDB 是一个多模型数据库。', 'text_zh')",
          null,
          { }
        ).toArray();
        assertEqual(1, result.length);
        assertTrue(Array === result[0].constructor);
        assertEqual(7, result[0].length);
        assertEqual([ "arangodb", "\u662F", "\u4E00\u4E2A", "\u591A", "\u6A21\u578B", "\u6570\u636E", "\u5E93" ], result[0]);
        assertEqual([ "arangodb", "是", "一个", "多", "模型", "数据", "库" ], result[0]);
      }

    },

  };
}

////////////////////////////////////////////////////////////////////////////////
/// @brief executes the test suite
////////////////////////////////////////////////////////////////////////////////

jsunity.run(iResearchFeatureAqlTestSuite);

return jsunity.done();