1 | <?php |
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2 | /** |
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3 | * PHP Billing Library |
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4 | * |
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5 | * @link https://github.com/hiqdev/php-billing |
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6 | * @package php-billing |
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7 | * @license BSD-3-Clause |
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8 | * @copyright Copyright (c) 2017-2018, HiQDev (http://hiqdev.com/) |
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9 | */ |
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10 | |||
11 | namespace hiqdev\php\billing\charge\modifiers; |
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12 | |||
13 | use hiqdev\php\billing\action\ActionInterface; |
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14 | use hiqdev\php\billing\charge\Charge; |
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15 | use hiqdev\php\billing\charge\ChargeInterface; |
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16 | use hiqdev\php\billing\charge\ChargeModifier; |
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17 | |||
18 | /** |
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19 | * Class FullCombination combines charges from all formulas from $left and $right parts of condition |
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20 | * |
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21 | * @author Dmytro Naumenko <[email protected]> |
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22 | */ |
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23 | class FullCombination implements ChargeModifier |
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24 | { |
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25 | /** |
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26 | * @var ChargeModifier |
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27 | */ |
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28 | protected $left; |
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29 | /** |
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30 | * @var ChargeModifier |
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31 | */ |
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32 | protected $right; |
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33 | |||
34 | 1 | public function __construct(ChargeModifier $left, ChargeModifier $right) |
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35 | { |
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36 | 1 | $this->left = $left; |
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37 | 1 | $this->right = $right; |
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38 | 1 | } |
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39 | |||
40 | /** |
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41 | * {@inheritdoc} |
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42 | */ |
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43 | public function modifyCharge(?ChargeInterface $charge, ActionInterface $action): array |
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44 | { |
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45 | $leftCharges = [$charge]; |
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46 | $rightCharges = [$charge]; |
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47 | |||
48 | if ($this->left->isSuitable($charge, $action)) { |
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49 | $leftCharges = $this->left->modifyCharge($charge, $action); |
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50 | if ($charge && empty($leftCharges)) { |
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51 | return []; // If there was at least one charge, but it disappeared – modifier does not want this charge to happen. Stop. |
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52 | } |
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53 | } |
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54 | |||
55 | /** @var Charge $leftTotal */ |
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56 | /** @var Charge $charge */ |
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57 | $leftTotal = $this->chargesSum($charge, $leftCharges); |
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58 | if ($this->right->isSuitable($leftTotal, $action)) { |
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59 | $dirtyRightCharges = $this->right->modifyCharge($leftTotal, $action); |
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60 | if ($leftTotal && empty($dirtyRightCharges)) { |
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61 | return []; // If there was a charge, but it disappeared – modifier does not want this charge to happen. Stop. |
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62 | } |
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63 | |||
64 | // Drop $leftTotal from $rightCharges array |
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65 | $rightCharges = array_filter($dirtyRightCharges, function (ChargeInterface $charge) use ($leftTotal) { |
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66 | return $charge !== $leftTotal; |
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67 | }); |
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68 | |||
69 | if (\count($rightCharges) === \count($dirtyRightCharges)) { // Original $leftTotal was not returned |
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70 | return $rightCharges; |
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71 | } |
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72 | } |
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73 | |||
74 | if ($charge && $leftTotal) { |
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75 | // If we had charge and left hand total charge – pass comments and events that were probably generated in left total |
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76 | if ($leftTotal->getComment()) { |
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77 | $charge->setComment($leftTotal->getComment()); |
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78 | } |
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79 | |||
80 | $events = $leftTotal->releaseEvents(); |
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81 | if (!empty($events)) { |
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82 | foreach ($events as $event) { |
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83 | $charge->recordThat($event); |
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84 | } |
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85 | } |
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86 | } |
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87 | |||
88 | return $this->unique(array_merge($leftCharges, $rightCharges)); |
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89 | } |
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90 | |||
91 | /** |
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92 | * {@inheritdoc} |
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93 | */ |
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94 | public function isSuitable(?ChargeInterface $charge, ActionInterface $action): bool |
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95 | { |
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96 | return $this->left->isSuitable($charge, $action) || $this->right->isSuitable($charge, $action); |
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97 | } |
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98 | |||
99 | /** |
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100 | * @param ChargeInterface[] $charges |
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101 | * @return ChargeInterface[] unique charges |
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102 | */ |
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103 | private function unique(array $charges): array |
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104 | { |
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105 | $hashes = []; |
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106 | $result = []; |
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107 | |||
108 | foreach ($charges as $charge) { |
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109 | $hash = spl_object_hash($charge); |
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110 | if (isset($hashes[$hash])) { |
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111 | continue; |
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112 | } |
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113 | $hashes[$hash] = true; |
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114 | $result[] = $charge; |
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115 | } |
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116 | |||
117 | return $result; |
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118 | } |
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119 | |||
120 | /** |
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121 | * @param ChargeInterface $originalCharge |
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122 | * @param ChargeInterface[] $producedCharges |
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123 | * @return ChargeInterface|null |
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124 | * @throws \Exception |
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125 | */ |
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126 | private function chargesSum(?ChargeInterface $originalCharge, array $producedCharges): ?ChargeInterface |
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127 | { |
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128 | if ($originalCharge === null) { |
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129 | return null; |
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130 | } |
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131 | |||
132 | $sum = $originalCharge->getSum(); |
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133 | |||
134 | $additionalCharges = []; |
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135 | foreach ($producedCharges as $charge) { |
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136 | if ($originalCharge === $charge) { |
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137 | continue; |
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138 | } |
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139 | |||
140 | $additionalCharges[] = $charge; |
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141 | $sum = $sum->add($charge->getSum()); |
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142 | } |
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143 | |||
144 | if (empty($additionalCharges)) { |
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145 | return $originalCharge; |
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146 | } |
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147 | |||
148 | $tempCharge = new Charge( |
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149 | $originalCharge->getId(), |
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150 | $originalCharge->getType(), |
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151 | $originalCharge->getTarget(), |
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152 | $originalCharge->getAction(), |
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153 | $originalCharge->getPrice(), |
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154 | $originalCharge->getUsage(), |
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155 | $sum, |
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156 | $originalCharge->getBill() |
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157 | ); |
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158 | if ($originalCharge->getComment() !== null) { |
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159 | $tempCharge->setComment($originalCharge->getComment()); |
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160 | } |
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161 | if ($originalCharge->getParent() !== null) { |
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162 | $tempCharge->setParent($originalCharge->getParent()); |
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163 | } |
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164 | |||
165 | return $tempCharge; |
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166 | } |
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167 | } |
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168 |