fnash /
graphql-qb
| Total Complexity | 53 |
| Total Lines | 357 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like QueryTrait often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use QueryTrait, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 5 | trait QueryTrait |
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| 6 | { |
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| 7 | private static $operationNamePlaceholder = '_operationNamePlaceholder_'; |
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| 8 | |||
| 9 | /** |
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| 10 | * @var string |
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| 11 | */ |
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| 12 | public $operationName; |
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| 13 | |||
| 14 | /** |
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| 15 | * @var array |
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| 16 | */ |
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| 17 | public $variables = []; |
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| 18 | |||
| 19 | /** |
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| 20 | * @var bool |
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| 21 | */ |
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| 22 | public $isRootQuery = true; |
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| 23 | |||
| 24 | /** |
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| 25 | * @var array |
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| 26 | */ |
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| 27 | public $type = []; |
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| 28 | |||
| 29 | /** |
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| 30 | * @var array |
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| 31 | */ |
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| 32 | public $args = []; |
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| 33 | |||
| 34 | /** |
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| 35 | * @var array |
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| 36 | */ |
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| 37 | public $fields = []; |
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| 38 | |||
| 39 | /** |
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| 40 | * @var array |
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| 41 | */ |
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| 42 | public $skipIf = []; |
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| 43 | |||
| 44 | /** |
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| 45 | * @var array |
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| 46 | */ |
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| 47 | public $includeIf = []; |
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| 48 | |||
| 49 | /** |
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| 50 | * @var array |
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| 51 | */ |
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| 52 | public $fragments = []; |
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| 53 | |||
| 54 | /** |
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| 55 | * @param null $type |
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| 56 | * @param array $args |
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| 57 | * @param array $fields |
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| 58 | * |
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| 59 | * @return self |
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| 60 | */ |
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| 61 | public static function create($type = null, array $args = [], array $fields = []) |
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| 62 | { |
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| 63 | return new self($type, $args, $fields); |
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| 64 | } |
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| 65 | |||
| 66 | /** |
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| 67 | * @param string $operationName |
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| 68 | * |
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| 69 | * @return self |
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| 70 | */ |
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| 71 | public function operationName(string $operationName) |
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| 72 | { |
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| 73 | $this->operationName = $operationName; |
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| 74 | |||
| 75 | return $this; |
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| 76 | } |
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| 77 | |||
| 78 | /** |
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| 79 | * @param $operationName |
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| 80 | * @param $variables |
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| 81 | * |
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| 82 | * @return string |
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| 83 | */ |
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| 84 | private static function printQuery($operationName, $variables): string |
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| 85 | { |
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| 86 | if (null === $operationName) { |
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| 87 | if (\count($variables)) { |
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| 88 | $operationName = static::$operationNamePlaceholder; |
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| 89 | } else { |
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| 90 | return ''; |
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| 91 | } |
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| 92 | } |
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| 93 | |||
| 94 | return sprintf('%s %s %s', static::KEYWORD, $operationName, static::printVariables($variables)); |
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| 95 | } |
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| 96 | |||
| 97 | /** |
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| 98 | * @param array $variables |
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| 99 | * |
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| 100 | * @return self |
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| 101 | */ |
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| 102 | public function variables(array $variables = []) |
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| 103 | { |
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| 104 | foreach ($variables as $variableName => $variableType) { |
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| 105 | $this->variables[(string) $variableName] = (string) $variableType; |
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| 106 | } |
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| 107 | |||
| 108 | return $this; |
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| 109 | } |
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| 110 | |||
| 111 | /** |
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| 112 | * @param array $value |
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| 113 | * |
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| 114 | * @return string |
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| 115 | */ |
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| 116 | private static function printVariables(array $value): string |
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| 117 | { |
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| 118 | if (!\count($value)) { |
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| 119 | return ''; |
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| 120 | } |
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| 121 | |||
| 122 | $variables = []; |
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| 123 | |||
| 124 | foreach ($value as $variableName => $variableType) { |
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| 125 | $variables[] = sprintf('%s: %s', $variableName, $variableType); |
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| 126 | } |
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| 127 | |||
| 128 | return sprintf('(%s)', implode(', ', $variables)); |
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| 129 | } |
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| 130 | |||
| 131 | /** |
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| 132 | * @param array $args |
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| 133 | * |
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| 134 | * @return self |
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| 135 | */ |
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| 136 | public function arguments(array $args = []) |
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| 145 | } |
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| 146 | |||
| 147 | /** |
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| 148 | * @param array $value |
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| 149 | * |
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| 150 | * @return string |
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| 151 | */ |
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| 152 | private static function printArgs(array $value): string |
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| 153 | { |
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| 154 | if (!count($value)) { |
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| 155 | return ''; |
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| 156 | } |
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| 157 | |||
| 158 | $args = []; |
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| 159 | foreach ($value as $argName => $argValue) { |
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| 160 | if (\is_string($argValue) && '$' !== $argValue[0]) { |
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| 161 | $argValue = sprintf('"%s"', $argValue); |
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| 162 | } |
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| 163 | |||
| 164 | if (\is_bool($argValue) || \is_float($argValue)) { |
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| 165 | $argValue = var_export($argValue, true); |
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| 166 | } |
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| 167 | |||
| 168 | $args[] = sprintf('%s: %s', $argName, $argValue); |
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| 169 | } |
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| 170 | |||
| 171 | return sprintf('(%s)', implode(', ', $args)); |
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| 172 | } |
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| 173 | |||
| 174 | /** |
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| 175 | * @param array $fields |
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| 176 | * |
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| 177 | * @return self |
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| 178 | */ |
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| 179 | public function fields(array $fields = []) |
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| 199 | } |
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| 200 | |||
| 201 | /** |
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| 202 | * @param array $fields |
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| 203 | * |
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| 204 | * @return self |
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| 205 | */ |
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| 206 | public function removeFields(array $fields = []): Query |
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| 213 | } |
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| 214 | |||
| 215 | /** |
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| 216 | * @param array $value |
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| 217 | * @param array $skipIf |
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| 218 | * @param array $includeIf |
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| 219 | * |
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| 220 | * @return string |
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| 221 | */ |
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| 222 | private static function printFields(array $value, array $skipIf = [], array $includeIf = []): string |
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| 223 | { |
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| 224 | $fields = []; |
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| 225 | |||
| 226 | foreach ($value as $fieldAlias => $field) { |
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| 227 | $directive = ''; |
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| 228 | |||
| 229 | if (\is_string($field)) { |
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| 230 | if ($fieldAlias !== $field) { |
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| 231 | if (array_key_exists($fieldAlias, $skipIf)) { |
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| 232 | $directive = sprintf('@skip(if: %s)', $skipIf[$fieldAlias]); |
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| 233 | } elseif (array_key_exists($fieldAlias, $includeIf)) { |
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| 234 | $directive = sprintf('@include(if: %s)', $includeIf[$fieldAlias]); |
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| 235 | } |
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| 236 | |||
| 237 | $fields[] = sprintf('%s: %s %s', $fieldAlias, $field, $directive); |
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| 238 | } else { |
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| 239 | if (array_key_exists($field, $skipIf)) { |
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| 240 | $directive = sprintf('@skip(if: %s)', $skipIf[$field]); |
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| 241 | } elseif (array_key_exists($field, $includeIf)) { |
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| 242 | $directive = sprintf('@include(if: %s)', $includeIf[$field]); |
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| 243 | } |
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| 244 | |||
| 245 | $fields[] = sprintf('%s %s', $field, $directive); |
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| 246 | } |
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| 247 | } |
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| 248 | |||
| 249 | if ($field instanceof self) { |
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| 250 | $field->isRootQuery = false; |
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| 251 | |||
| 252 | if (array_key_exists($fieldAlias, $skipIf)) { |
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| 253 | $directive = sprintf('@skip(if: %s)', $skipIf[$fieldAlias]); |
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| 254 | } elseif (array_key_exists($fieldAlias, $includeIf)) { |
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| 255 | $directive = sprintf('@include(if: %s)', $includeIf[$fieldAlias]); |
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| 256 | } |
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| 257 | |||
| 258 | if (null !== $field->type) { |
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| 259 | $fieldAlias = sprintf('%s: %s', $fieldAlias, $field->type); |
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| 260 | } |
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| 261 | |||
| 262 | $fields[] = sprintf('%s %s { %s }', $fieldAlias, $directive, static::printFields($field->fields)); |
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| 263 | } |
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| 264 | } |
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| 265 | |||
| 266 | return implode(', ', $fields); |
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| 267 | } |
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| 268 | |||
| 269 | /** |
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| 270 | * @param array $values |
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| 271 | * |
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| 272 | * @return self |
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| 273 | */ |
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| 274 | public function skipIf(array $values = []) |
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| 275 | { |
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| 276 | foreach ($values as $field => $argument) { |
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| 277 | $this->skipIf[$field] = $argument; |
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| 278 | } |
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| 279 | |||
| 280 | return $this; |
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| 281 | } |
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| 282 | |||
| 283 | /** |
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| 284 | * @param array $values |
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| 285 | * |
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| 286 | * @return self |
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| 287 | */ |
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| 288 | public function includeIf(array $values = []) |
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| 289 | { |
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| 290 | foreach ($values as $field => $argument) { |
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| 291 | $this->includeIf[$field] = $argument; |
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| 292 | } |
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| 293 | |||
| 294 | return $this; |
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| 295 | } |
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| 296 | |||
| 297 | public function __toString() |
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| 298 | { |
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| 299 | if ($this->isRootQuery) { |
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| 300 | $query = sprintf('%s { %s %s { %s } } %s', static::printQuery($this->operationName, $this->variables), static::printType($this->type), static::printArgs($this->args), static::printFields($this->fields, $this->skipIf, $this->includeIf), static::printFragments($this->fragments)); |
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| 301 | } else { |
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| 302 | $query = sprintf('%s { %s }', static::printType($this->type), static::printFields($this->fields, $this->skipIf, $this->includeIf)); |
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| 303 | } |
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| 304 | |||
| 305 | $query = \GraphQL\Language\Printer::doPrint(\GraphQL\Language\Parser::parse((string) $query)); |
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| 306 | |||
| 307 | $query = str_replace(static::$operationNamePlaceholder, static::GENERATED_NAME_PREFIX.sha1($query), $query); |
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| 308 | |||
| 309 | return $query; |
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| 310 | } |
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| 311 | |||
| 312 | /** |
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| 313 | * @param Fragment $fragment |
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| 314 | * |
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| 315 | * @return $this |
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| 316 | */ |
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| 317 | public function addFragment(Fragment $fragment) |
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| 322 | } |
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| 323 | |||
| 324 | /** |
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| 325 | * @param $value |
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| 326 | * |
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| 327 | * @return string |
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| 328 | */ |
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| 329 | private function printFragments($value) |
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| 330 | { |
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| 331 | $fragments = ''; |
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| 332 | foreach ($value as $fragment) { |
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| 333 | $fragments .= (string) $fragment; |
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| 334 | } |
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| 335 | |||
| 336 | return $fragments; |
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| 337 | } |
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| 338 | |||
| 339 | /** |
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| 340 | * @param null $type |
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| 341 | * @param array $args |
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| 342 | * @param array $fields |
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| 343 | */ |
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| 344 | private function __construct($type = null, array $args = [], array $fields = []) |
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| 351 | } |
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| 352 | |||
| 353 | private static function printType($value): string |
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| 362 | } |
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| 363 | } |
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| 364 | } |
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| 365 | } |
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| 366 |
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