'use strict';
module.exports = function generate_custom(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 $errorKeyword;
  var $data = 'data' + ($dataLvl || '');
  var $valid = 'valid' + $lvl;
  var $errs = 'errs__' + $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;
  }
  var $rule = this,
    $definition = 'definition' + $lvl,
    $rDef = $rule.definition,
    $closingBraces = '';
  var $compile, $inline, $macro, $ruleValidate, $validateCode;
  if ($isData && $rDef.$data) {
    $validateCode = 'keywordValidate' + $lvl;
    var $validateSchema = $rDef.validateSchema;
    out += ' var ' + ($definition) + ' = RULES.custom[\'' + ($keyword) + '\'].definition; var ' + ($validateCode) + ' = ' + ($definition) + '.validate;';
  } else {
    $ruleValidate = it.useCustomRule($rule, $schema, it.schema, it);
    if (!$ruleValidate) return;
    $schemaValue = 'validate.schema' + $schemaPath;
    $validateCode = $ruleValidate.code;
    $compile = $rDef.compile;
    $inline = $rDef.inline;
    $macro = $rDef.macro;
  }
  var $ruleErrs = $validateCode + '.errors',
    $i = 'i' + $lvl,
    $ruleErr = 'ruleErr' + $lvl,
    $asyncKeyword = $rDef.async;
  if ($asyncKeyword && !it.async) throw new Error('async keyword in sync schema');
  if (!($inline || $macro)) {
    out += '' + ($ruleErrs) + ' = null;';
  }
  out += 'var ' + ($errs) + ' = errors;var ' + ($valid) + ';';
  if ($isData && $rDef.$data) {
    $closingBraces += '}';
    out += ' if (' + ($schemaValue) + ' === undefined) { ' + ($valid) + ' = true; } else { ';
    if ($validateSchema) {
      $closingBraces += '}';
      out += ' ' + ($valid) + ' = ' + ($definition) + '.validateSchema(' + ($schemaValue) + '); if (' + ($valid) + ') { ';
    }
  }
  if ($inline) {
    if ($rDef.statements) {
      out += ' ' + ($ruleValidate.validate) + ' ';
    } else {
      out += ' ' + ($valid) + ' = ' + ($ruleValidate.validate) + '; ';
    }
  } else if ($macro) {
    var $it = it.util.copy(it);
    var $closingBraces = '';
    $it.level++;
    var $nextValid = 'valid' + $it.level;
    $it.schema = $ruleValidate.validate;
    $it.schemaPath = '';
    var $wasComposite = it.compositeRule;
    it.compositeRule = $it.compositeRule = true;
    var $code = it.validate($it).replace(/validate\.schema/g, $validateCode);
    it.compositeRule = $it.compositeRule = $wasComposite;
    out += ' ' + ($code);
  } else {
    var $$outStack = $$outStack || [];
    $$outStack.push(out);
    out = '';
    out += '  ' + ($validateCode) + '.call( ';
    if (it.opts.passContext) {
      out += 'this';
    } else {
      out += 'self';
    }
    if ($compile || $rDef.schema === false) {
      out += ' , ' + ($data) + ' ';
    } else {
      out += ' , ' + ($schemaValue) + ' , ' + ($data) + ' , validate.schema' + (it.schemaPath) + ' ';
    }
    out += ' , (dataPath || \'\')';
    if (it.errorPath != '""') {
      out += ' + ' + (it.errorPath);
    }
    var $parentData = $dataLvl ? 'data' + (($dataLvl - 1) || '') : 'parentData',
      $parentDataProperty = $dataLvl ? it.dataPathArr[$dataLvl] : 'parentDataProperty';
    out += ' , ' + ($parentData) + ' , ' + ($parentDataProperty) + ' , rootData )  ';
    var def_callRuleValidate = out;
    out = $$outStack.pop();
    if ($rDef.errors === false) {
      out += ' ' + ($valid) + ' = ';
      if ($asyncKeyword) {
        out += '' + (it.yieldAwait);
      }
      out += '' + (def_callRuleValidate) + '; ';
    } else {
      if ($asyncKeyword) {
        $ruleErrs = 'customErrors' + $lvl;
        out += ' var ' + ($ruleErrs) + ' = null; try { ' + ($valid) + ' = ' + (it.yieldAwait) + (def_callRuleValidate) + '; } catch (e) { ' + ($valid) + ' = false; if (e instanceof ValidationError) ' + ($ruleErrs) + ' = e.errors; else throw e; } ';
      } else {
        out += ' ' + ($ruleErrs) + ' = null; ' + ($valid) + ' = ' + (def_callRuleValidate) + '; ';
      }
    }
  }
  if ($rDef.modifying) {
    out += ' if (' + ($parentData) + ') ' + ($data) + ' = ' + ($parentData) + '[' + ($parentDataProperty) + '];';
  }
  out += '' + ($closingBraces);
  if ($rDef.valid) {
    if ($breakOnError) {
      out += ' if (true) { ';
    }
  } else {
    out += ' if ( ';
    if ($rDef.valid === undefined) {
      out += ' !';
      if ($macro) {
        out += '' + ($nextValid);
      } else {
        out += '' + ($valid);
      }
    } else {
      out += ' ' + (!$rDef.valid) + ' ';
    }
    out += ') { ';
    $errorKeyword = $rule.keyword;
    var $$outStack = $$outStack || [];
    $$outStack.push(out);
    out = '';
    var $$outStack = $$outStack || [];
    $$outStack.push(out);
    out = ''; /* istanbul ignore else */
    if (it.createErrors !== false) {
      out += ' { keyword: \'' + ($errorKeyword || 'custom') + '\' , dataPath: (dataPath || \'\') + ' + (it.errorPath) + ' , schemaPath: ' + (it.util.toQuotedString($errSchemaPath)) + ' , params: { keyword: \'' + ($rule.keyword) + '\' } ';
      if (it.opts.messages !== false) {
        out += ' , message: \'should pass "' + ($rule.keyword) + '" keyword validation\' ';
      }
      if (it.opts.verbose) {
        out += ' , schema: validate.schema' + ($schemaPath) + ' , parentSchema: validate.schema' + (it.schemaPath) + ' , data: ' + ($data) + ' ';
      }
      out += ' } ';
    } else {
      out += ' {} ';
    }
    var __err = out;
    out = $$outStack.pop();
    if (!it.compositeRule && $breakOnError) { /* istanbul ignore if */
      if (it.async) {
        out += ' throw new ValidationError([' + (__err) + ']); ';
      } else {
        out += ' validate.errors = [' + (__err) + ']; return false; ';
      }
    } else {
      out += ' var err = ' + (__err) + ';  if (vErrors === null) vErrors = [err]; else vErrors.push(err); errors++; ';
    }
    var def_customError = out;
    out = $$outStack.pop();
    if ($inline) {
      if ($rDef.errors) {
        if ($rDef.errors != 'full') {
          out += '  for (var ' + ($i) + '=' + ($errs) + '; ' + ($i) + '<errors; ' + ($i) + '++) { var ' + ($ruleErr) + ' = vErrors[' + ($i) + ']; if (' + ($ruleErr) + '.dataPath === undefined) ' + ($ruleErr) + '.dataPath = (dataPath || \'\') + ' + (it.errorPath) + '; if (' + ($ruleErr) + '.schemaPath === undefined) { ' + ($ruleErr) + '.schemaPath = "' + ($errSchemaPath) + '"; } ';
          if (it.opts.verbose) {
            out += ' ' + ($ruleErr) + '.schema = ' + ($schemaValue) + '; ' + ($ruleErr) + '.data = ' + ($data) + '; ';
          }
          out += ' } ';
        }
      } else {
        if ($rDef.errors === false) {
          out += ' ' + (def_customError) + ' ';
        } else {
          out += ' if (' + ($errs) + ' == errors) { ' + (def_customError) + ' } else {  for (var ' + ($i) + '=' + ($errs) + '; ' + ($i) + '<errors; ' + ($i) + '++) { var ' + ($ruleErr) + ' = vErrors[' + ($i) + ']; if (' + ($ruleErr) + '.dataPath === undefined) ' + ($ruleErr) + '.dataPath = (dataPath || \'\') + ' + (it.errorPath) + '; if (' + ($ruleErr) + '.schemaPath === undefined) { ' + ($ruleErr) + '.schemaPath = "' + ($errSchemaPath) + '"; } ';
          if (it.opts.verbose) {
            out += ' ' + ($ruleErr) + '.schema = ' + ($schemaValue) + '; ' + ($ruleErr) + '.data = ' + ($data) + '; ';
          }
          out += ' } } ';
        }
      }
    } else if ($macro) {
      out += '   var err =   '; /* istanbul ignore else */
      if (it.createErrors !== false) {
        out += ' { keyword: \'' + ($errorKeyword || 'custom') + '\' , dataPath: (dataPath || \'\') + ' + (it.errorPath) + ' , schemaPath: ' + (it.util.toQuotedString($errSchemaPath)) + ' , params: { keyword: \'' + ($rule.keyword) + '\' } ';
        if (it.opts.messages !== false) {
          out += ' , message: \'should pass "' + ($rule.keyword) + '" keyword validation\' ';
        }
        if (it.opts.verbose) {
          out += ' , schema: validate.schema' + ($schemaPath) + ' , parentSchema: validate.schema' + (it.schemaPath) + ' , data: ' + ($data) + ' ';
        }
        out += ' } ';
      } else {
        out += ' {} ';
      }
      out += ';  if (vErrors === null) vErrors = [err]; else vErrors.push(err); errors++; ';
      if (!it.compositeRule && $breakOnError) { /* istanbul ignore if */
        if (it.async) {
          out += ' throw new ValidationError(vErrors); ';
        } else {
          out += ' validate.errors = vErrors; return false; ';
        }
      }
    } else {
      if ($rDef.errors === false) {
        out += ' ' + (def_customError) + ' ';
      } else {
        out += ' if (Array.isArray(' + ($ruleErrs) + ')) { if (vErrors === null) vErrors = ' + ($ruleErrs) + '; else vErrors = vErrors.concat(' + ($ruleErrs) + '); errors = vErrors.length;  for (var ' + ($i) + '=' + ($errs) + '; ' + ($i) + '<errors; ' + ($i) + '++) { var ' + ($ruleErr) + ' = vErrors[' + ($i) + ']; if (' + ($ruleErr) + '.dataPath === undefined) ' + ($ruleErr) + '.dataPath = (dataPath || \'\') + ' + (it.errorPath) + ';  ' + ($ruleErr) + '.schemaPath = "' + ($errSchemaPath) + '";  ';
        if (it.opts.verbose) {
          out += ' ' + ($ruleErr) + '.schema = ' + ($schemaValue) + '; ' + ($ruleErr) + '.data = ' + ($data) + '; ';
        }
        out += ' } } else { ' + (def_customError) + ' } ';
      }
    }
    out += ' } ';
    if ($breakOnError) {
      out += ' else { ';
    }
  }
  return out;
}