'use strict';
module.exports = function generate_uniqueItems(it, $keyword, $ruleType) {
  var out = ' ';
  var $lvl = it.level;
  var $dataLvl = it.dataLevel;
  var $schema = it.schema[$keyword];
  var $schemaPath = it.schemaPath + it.util.getProperty($keyword);
  var $errSchemaPath = it.errSchemaPath + '/' + $keyword;
  var $breakOnError = !it.opts.allErrors;
  var $data = 'data' + ($dataLvl || '');
  var $valid = 'valid' + $lvl;
  var $isData = it.opts.$data && $schema && $schema.$data,
    $schemaValue;
  if ($isData) {
    out +=
      ' var schema' +
      $lvl +
      ' = ' +
      it.util.getData($schema.$data, $dataLvl, it.dataPathArr) +
      '; ';
    $schemaValue = 'schema' + $lvl;
  } else {
    $schemaValue = $schema;
  }
  if (($schema || $isData) && it.opts.uniqueItems !== false) {
    if ($isData) {
      out +=
        ' var ' +
        $valid +
        '; if (' +
        $schemaValue +
        ' === false || ' +
        $schemaValue +
        ' === undefined) ' +
        $valid +
        ' = true; else if (typeof ' +
        $schemaValue +
        " != 'boolean') " +
        $valid +
        ' = false; else { ';
    }
    out +=
      ' var i = ' +
      $data +
      '.length , ' +
      $valid +
      ' = true , j; if (i > 1) { ';
    var $itemType = it.schema.items && it.schema.items.type,
      $typeIsArray = Array.isArray($itemType);
    if (
      !$itemType ||
      $itemType == 'object' ||
      $itemType == 'array' ||
      ($typeIsArray &&
        ($itemType.indexOf('object') >= 0 || $itemType.indexOf('array') >= 0))
    ) {
      out +=
        ' outer: for (;i--;) { for (j = i; j--;) { if (equal(' +
        $data +
        '[i], ' +
        $data +
        '[j])) { ' +
        $valid +
        ' = false; break outer; } } } ';
    } else {
      out +=
        ' var itemIndices = {}, item; for (;i--;) { var item = ' +
        $data +
        '[i]; ';
      var $method = 'checkDataType' + ($typeIsArray ? 's' : '');
      out +=
        ' if (' +
        it.util[$method]($itemType, 'item', it.opts.strictNumbers, true) +
        ') continue; ';
      if ($typeIsArray) {
        out += " if (typeof item == 'string') item = '\"' + item; ";
      }
      out +=
        " if (typeof itemIndices[item] == 'number') { " +
        $valid +
        ' = false; j = itemIndices[item]; break; } itemIndices[item] = i; } ';
    }
    out += ' } ';
    if ($isData) {
      out += '  }  ';
    }
    out += ' if (!' + $valid + ') {   ';
    var $$outStack = $$outStack || [];
    $$outStack.push(out);
    out = ''; /* istanbul ignore else */
    if (it.createErrors !== false) {
      out +=
        " { keyword: '" +
        'uniqueItems' +
        "' , dataPath: (dataPath || '') + " +
        it.errorPath +
        ' , schemaPath: ' +
        it.util.toQuotedString($errSchemaPath) +
        ' , params: { i: i, j: j } ';
      if (it.opts.messages !== false) {
        out +=
          " , message: 'should NOT have duplicate items (items ## ' + j + ' and ' + i + ' are identical)' ";
      }
      if (it.opts.verbose) {
        out += ' , schema:  ';
        if ($isData) {
          out += 'validate.schema' + $schemaPath;
        } else {
          out += '' + $schema;
        }
        out +=
          '         , parentSchema: validate.schema' +
          it.schemaPath +
          ' , data: ' +
          $data +
          ' ';
      }
      out += ' } ';
    } else {
      out += ' {} ';
    }
    var __err = out;
    out = $$outStack.pop();
    if (!it.compositeRule && $breakOnError) {
      /* istanbul ignore if */
      if (it.async) {
        out += ' throw new ValidationError([' + __err + ']); ';
      } else {
        out += ' validate.errors = [' + __err + ']; return false; ';
      }
    } else {
      out +=
        ' var err = ' +
        __err +
        ';  if (vErrors === null) vErrors = [err]; else vErrors.push(err); errors++; ';
    }
    out += ' } ';
    if ($breakOnError) {
      out += ' else { ';
    }
  } else {
    if ($breakOnError) {
      out += ' if (true) { ';
    }
  }
  return out;
};