var sanitize = require('../../../sanitiser/_ids');

var delimiter = ':';
var type_mapping = require('../../../helper/type_mapping');
var inputs = {
  valid: [ 'geoname:1', 'osmnode:2', 'admin0:53', 'osmway:44', 'geoname:5' ],
  invalid: [ ':', '', '::', 'geoname:', ':234', 'gibberish:23' ]
};

var formatError = function(input) {
  return 'id `' + input + ' is invalid: must be of the format type:id for ex: \'geoname:4163334\'';
};
var lengthError = 'invalid param \'ids\': length must be >0';
var defaultMissingTypeError = function(input) {
    var type = input.split(delimiter)[0];
    return type + ' is invalid. It must be one of these values - [' + type_mapping.types_list.join(', ') + ']';
  };

module.exports.tests = {};

module.exports.tests.invalid_ids = function(test, common) {
  test('invalid id: empty string', function(t) {
    var raw = { ids: '' };
    var clean = {};

    var messages = sanitize(raw, clean);

    t.equal(messages.errors[0], lengthError, 'ids length error returned');
    t.equal(clean.ids, undefined, 'ids unset in clean object');
    t.end();
  });

  test('invalid id: single colon', function(t) {
    var raw = { ids: ':' };
    var clean = {};

    var messages = sanitize(raw, clean);

    t.equal(messages.errors[0], formatError(':'), 'format error returned');
    t.equal(clean.ids, undefined, 'ids unset in clean object');
    t.end();
  });

  test('invalid id: double colon', function(t) {
    var raw = { ids: '::' };
    var clean = {};

    var messages = sanitize(raw, clean);

    t.equal(messages.errors[0], formatError('::'), 'format error returned');
    t.equal(clean.ids, undefined, 'ids unset in clean object');
    t.end();
  });

  test('invalid id: only type section present', function(t) {
    var raw = { ids: 'geoname:' };
    var clean = {};

    var messages = sanitize(raw, clean);

    t.equal(messages.errors[0], formatError('geoname:'), 'format error returned');
    t.equal(clean.ids, undefined, 'ids unset in clean object');
    t.end();
  });

  test('invalid id: only type id section present', function(t) {
    var raw = { ids: ':234' };
    var clean = {};

    var messages = sanitize(raw, clean);

    t.equal(messages.errors[0], formatError(':234'), 'format error returned');
    t.equal(clean.ids, undefined, 'ids unset in clean object');
    t.end();
  });

  test('invalid id: type name invalid', function(t) {
    var raw = { ids: 'gibberish:23' };
    var clean = {};

    var messages = sanitize(raw, clean);

    t.equal(messages.errors[0], defaultMissingTypeError('gibberish:23'), 'format error returned');
    t.equal(clean.ids, undefined, 'ids unset in clean object');
    t.end();
  });
};

module.exports.tests.valid_ids = function(test, common) {
  test('ids: valid input', function(t) {
    inputs.valid.forEach( function( input ){
      var input_parts = input.split(delimiter);
      var expected_clean = { ids: [ { id: input_parts[1], types: [ input_parts[0] ]} ]};
      var raw = {  ids: input };
      var clean = {};

      var messages = sanitize( raw, clean );

      t.deepEqual( messages.errors, [], 'no error (' + input + ')' );
      t.deepEqual( clean, expected_clean, 'clean set correctly (' + input + ')');
    });
    t.end();
  });

  test('ids: valid input with multiple values' , function(t) {
    var raw = { ids: inputs.valid.join(',') };
    var clean = {};
    var expected_clean={
      ids: [],
    };
    // construct the expected id and type for each valid input
    inputs.valid.forEach( function( input ){
      var input_parts = input.split(delimiter);
      expected_clean.ids.push({ id: input_parts[1], types: [ input_parts[0] ]});
    });

    var messages = sanitize( raw, clean );

    t.deepEqual( messages.errors, [], 'no errors' );
    t.deepEqual( clean, expected_clean, 'clean set correctly' );
    t.end();
  });
};

module.exports.tests.array_of_ids = function(test, common) {
  // see https://github.com/pelias/api/issues/272
  test('array of ids sent by queryparser', function(t) {
    var raw = { ids: ['geoname:2', 'oswmay:4'] };
    var clean = {};

    var messages = sanitize( raw, clean);

    t.deepEqual( messages.errors, ['`ids` parameter specified multiple times.'], 'error sent' );
    t.deepEqual( clean.ids, undefined, 'response is empty due to error' );
    t.end();
  });
};

module.exports.tests.multiple_ids = function(test, common) {
  test('duplicate ids', function(t) {
    var expected_clean = { ids: [ { id: '1', types: [ 'geoname' ] }, { id: '2', types: [ 'osmnode' ] } ] };
    var raw = { ids: 'geoname:1,osmnode:2' };
    var clean = {};

    var messages = sanitize( raw, clean);

    t.deepEqual( messages.errors, [], 'no errors' );
    t.deepEqual( messages.warnings, [], 'no warnings' );
    t.deepEqual(clean, expected_clean, 'clean set correctly');
    t.end();
  });
};

module.exports.tests.de_dupe = function(test, common) {
  test('duplicate ids', function(t) {
    var expected_clean = { ids: [ { id: '1', types: [ 'geoname' ] }, { id: '2', types: [ 'osmnode' ] } ] };
    var raw = { ids: 'geoname:1,osmnode:2,geoname:1' };
    var clean = {};

    var messages = sanitize( raw, clean );

    t.deepEqual( messages.errors, [], 'no errors' );
    t.deepEqual( messages.warnings, [], 'no warnings' );
    t.deepEqual(clean, expected_clean, 'clean set correctly');
    t.end();
  });
};

module.exports.all = function (tape, common) {
  function test(name, testFunction) {
    return tape('SANTIZE _ids ' + name, testFunction);
  }

  for( var testCase in module.exports.tests ){
    module.exports.tests[testCase](test, common);
  }
};