/*
 * 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.
 */

 // This is the Node.js test driver for the standard Apache Thrift
 // test service. The driver invokes every function defined in the
 // Thrift Test service with a representative range of parameters.
 //
 // The ThriftTestDriver function requires a client object
 // connected to a server hosting the Thrift Test service and
 // supports an optional callback function which is called with
 // a status message when the test is complete.

var test = require('tape');
//var assert = require('assert');
var ttypes = require('./gen-nodejs/ThriftTest_types');
var TException = require('thrift').Thrift.TException;
var Int64 = require('node-int64');
var testCases = require('./test-cases');

exports.ThriftTestDriver = function(client, callback) {

  test('NodeJS Style Callback Client Tests', function(assert) {

    var checkRecursively = makeRecursiveCheck(assert);

    function makeAsserter(assertionFn) {
      return function(c) {
        var fnName = c[0];
        var expected = c[1];
        client[fnName](expected, function(err, actual) {
          assert.error(err, fnName + ': no callback error');
          assertionFn(actual, expected, fnName);
        })
      };
    }

    testCases.simple.forEach(makeAsserter(function(a, e, m){
      if (a instanceof Int64) {
        var e64 = e instanceof Int64 ? e : new Int64(e);
        assert.deepEqual(a.buffer, e64.buffer, m);
      } else {
        assert.equal(a, e, m);
      }
    }));
    testCases.deep.forEach(makeAsserter(assert.deepEqual));
    testCases.deepUnordered.forEach(makeAsserter(makeUnorderedDeepEqual(assert)));

    var arr = [];
    for (var i = 0; i < 256; ++i) {
      arr[i] = 255 - i;
    }
    var buf = new Buffer(arr);
    client.testBinary(buf, function(err, response) {
      assert.error(err, 'testBinary: no callback error');
      assert.equal(response.length, 256, 'testBinary');
      assert.deepEqual(response, buf, 'testBinary(Buffer)');
    });
    var buf = new Buffer(arr);
    client.testBinary(buf.toString('binary'), function(err, response) {
      assert.error(err, 'testBinary: no callback error');
      assert.equal(response.length, 256, 'testBinary');
      assert.deepEqual(response, buf, 'testBinary(string)');
    });

    client.testMapMap(42, function(err, response) {
      var expected = {
        "4": {"1":1, "2":2, "3":3, "4":4},
        "-4": {"-4":-4, "-3":-3, "-2":-2, "-1":-1}
      };
      assert.error(err, 'testMapMap: no callback error');
      assert.deepEqual(expected, response, 'testMapMap');
    });

    client.testStruct(testCases.out, function(err, response) {
      assert.error(err, 'testStruct: no callback error');
      checkRecursively(testCases.out, response, 'testStruct');
    });

    client.testNest(testCases.out2, function(err, response) {
      assert.error(err, 'testNest: no callback error');
      checkRecursively(testCases.out2, response, 'testNest');
    });

    client.testInsanity(testCases.crazy, function(err, response) {
      assert.error(err, 'testInsanity: no callback error');
      checkRecursively(testCases.insanity, response, 'testInsanity');
    });

    client.testInsanity(testCases.crazy2, function(err, response) {
      assert.error(err, 'testInsanity2: no callback error');
      checkRecursively(testCases.insanity, response, 'testInsanity2');
    });

    client.testException('TException', function(err, response) {
      assert.ok(err instanceof TException, 'testException: correct error type');
      assert.ok(!response, 'testException: no response');
    });

    client.testException('Xception', function(err, response) {
      assert.ok(err instanceof ttypes.Xception, 'testException: correct error type');
      assert.ok(!response, 'testException: no response');
      assert.equal(err.errorCode, 1001, 'testException: correct error code');
      assert.equal('Xception', err.message, 'testException: correct error message');
    });

    client.testException('no Exception', function(err, response) {
      assert.error(err, 'testException: no callback error');
      assert.ok(!response, 'testException: no response');
    });

    client.testOneway(0, function(err, response) {
      assert.error(err, 'testOneway: no callback error');
      assert.strictEqual(response, undefined, 'testOneway: void response');
    });

    checkOffByOne(function(done) {
      client.testI32(-1, function(err, response) {
        assert.error(err, 'checkOffByOne: no callback error');
        assert.equal(-1, response);
        assert.end();
        done();
      });
    }, callback);

  });
};

exports.ThriftTestDriverPromise = function(client, callback) {

  test('Q Promise Client Tests', function(assert) {

    var checkRecursively = makeRecursiveCheck(assert);

    function fail(msg) {
      return function() {
        assert.fail(msg);
      }
    }

    function makeAsserter(assertionFn) {
      return function(c) {
        var fnName = c[0];
        var expected = c[1];
        client[fnName](expected)
          .then(function(actual) {
            assertionFn(actual, expected, fnName);
          })
          .fail(fail('fnName'));
      };
    }

    testCases.simple.forEach(makeAsserter(function(a, e, m){
      if (a instanceof Int64) {
        var e64 = e instanceof Int64 ? e : new Int64(e);
        assert.deepEqual(a.buffer, e64.buffer, m);
      } else {
        assert.equal(a, e, m);
      }
    }));
    testCases.deep.forEach(makeAsserter(assert.deepEqual));
    testCases.deepUnordered.forEach(makeAsserter(makeUnorderedDeepEqual(assert)));

    client.testStruct(testCases.out)
      .then(function(response) {
        checkRecursively(testCases.out, response, 'testStruct');
      })
      .fail(fail('testStruct'));

    client.testNest(testCases.out2)
      .then(function(response) {
        checkRecursively(testCases.out2, response, 'testNest');
      })
      .fail(fail('testNest'));

    client.testInsanity(testCases.crazy)
      .then(function(response) {
        checkRecursively(testCases.insanity, response, 'testInsanity');
      })
      .fail(fail('testInsanity'));

    client.testInsanity(testCases.crazy2)
      .then(function(response) {
        checkRecursively(testCases.insanity, response, 'testInsanity2');
      })
      .fail(fail('testInsanity2'));

    client.testException('TException')
      .then(function(response) {
        fail('testException: TException');
      })
      .fail(function(err) {
        assert.ok(err instanceof TException);
      });

    client.testException('Xception')
      .then(function(response) {
        fail('testException: Xception');
      })
      .fail(function(err) {
        assert.ok(err instanceof ttypes.Xception);
        assert.equal(err.errorCode, 1001);
        assert.equal('Xception', err.message);
      });

    client.testException('no Exception')
      .then(function(response) {
        assert.equal(undefined, response); //void
      })
      .fail(fail('testException'));

    client.testOneway(0)
      .then(function(response) {
        assert.strictEqual(response, undefined, 'testOneway: void response')
      })
      .fail(fail('testOneway: should not reject'));

    checkOffByOne(function(done) {
      client.testI32(-1)
        .then(function(response) {
            assert.equal(-1, response);
            assert.end();
            done();
        })
        .fail(fail('checkOffByOne'));
    }, callback);
  });
};


// Helper Functions
// =========================================================

function makeRecursiveCheck(assert) {

  return function (map1, map2, msg) {
    var equal = true;

    var equal = checkRecursively(map1, map2);

    assert.ok(equal, msg);

    // deepEqual doesn't work with fields using node-int64
    function checkRecursively(map1, map2) {
      if (typeof map1 !== 'function' && typeof map2 !== 'function') {
        if (!map1 || typeof map1 !== 'object') {
          //Handle int64 types (which use node-int64 in Node.js JavaScript)
          if ((typeof map1 === "number") && (typeof map2 === "object") &&
              (map2.buffer) && (map2.buffer instanceof Buffer) && (map2.buffer.length === 8)) {
            var n = new Int64(map2.buffer);
            return map1 === n.toNumber();
          } else {
            return map1 == map2;
          }
        } else {
          return Object.keys(map1).every(function(key) {
            return checkRecursively(map1[key], map2[key]);
          });
        }
      }
    }
  }
}

function checkOffByOne(done, callback) {

  var retry_limit = 30;
  var retry_interval = 100;
  var test_complete = false;
  var retrys = 0;

  /**
   * redo a simple test after the oneway to make sure we aren't "off by one" --
   * if the server treated oneway void like normal void, this next test will
   * fail since it will get the void confirmation rather than the correct
   * result. In this circumstance, the client will throw the exception:
   *
   * Because this is the last test against the server, when it completes
   * the entire suite is complete by definition (the tests run serially).
   */
  done(function() {
    test_complete = true;
  });

  //We wait up to retry_limit * retry_interval for the test suite to complete
  function TestForCompletion() {
    if(test_complete && callback) {
      callback("Server successfully tested!");
    } else {
      if (++retrys < retry_limit) {
        setTimeout(TestForCompletion, retry_interval);
      } else if (callback) {
        callback("Server test failed to complete after " +
                 (retry_limit * retry_interval / 1000) + " seconds");
      }
    }
  }

  setTimeout(TestForCompletion, retry_interval);
}

function makeUnorderedDeepEqual(assert) {
  return function(actual, expected, name) {
    assert.equal(actual.length, expected.length, name);
    for (var k in actual) {
      var found = false;
      for (var k2 in expected) {
        if (actual[k] === expected[k2]) {
          found = true;
        }
      }
      if (!found) {
        assert.fail('Unexpected value ' + actual[k] + ' with key ' + k);
      }
    }
  };
}
