1 | <?php |
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2 | |||
3 | namespace Shetabit\Captcha; |
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4 | |||
5 | use Shetabit\Captcha\Contracts\DriverInterface; |
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6 | use Shetabit\Captcha\Exceptions\DriverNotFoundException; |
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7 | use Shetabit\Captcha\Provider\CaptchaServiceProvider; |
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8 | |||
9 | class CaptchaManager |
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10 | { |
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11 | protected $serviceProvider; |
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12 | |||
13 | /** |
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14 | * Captcha Configuration. |
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15 | * |
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16 | * @var array |
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17 | */ |
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18 | protected $config; |
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19 | |||
20 | /** |
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21 | * Captcha Driver Settings. |
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22 | * |
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23 | * @var array |
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24 | */ |
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25 | protected $settings; |
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26 | |||
27 | /** |
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28 | * Captcha Driver Name. |
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29 | * |
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30 | * @var string |
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31 | */ |
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32 | protected $driver; |
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33 | |||
34 | /** |
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35 | * Captcha Driver Instance. |
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36 | * |
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37 | * @var object |
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38 | */ |
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39 | protected $driverInstance; |
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40 | |||
41 | /** |
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42 | * CaptchaManager constructor. |
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43 | * |
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44 | * CaptchaManager constructor. |
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45 | * @param CaptchaServiceProvider $serviceProvider |
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46 | * @param $config |
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47 | * @throws \Exception |
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48 | */ |
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49 | public function __construct(CaptchaServiceProvider $serviceProvider, $config) |
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50 | { |
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51 | $this->serviceProvider = $serviceProvider; |
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52 | $this->config = $config; |
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53 | |||
54 | $this->via($this->config['default']); |
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55 | } |
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56 | |||
57 | /** |
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58 | * Set driver. |
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59 | * |
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60 | * @param $driver |
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61 | * @return $this |
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62 | * @throws \Exception |
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63 | */ |
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64 | private function via($driver) |
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65 | { |
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66 | $this->driver = $driver; |
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67 | $this->validateDriver(); |
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68 | $this->settings = $this->config['drivers'][$driver]; |
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69 | |||
70 | return $this; |
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71 | } |
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72 | |||
73 | /** |
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74 | * Prepare driver's instance to load requirements if needed. |
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75 | * |
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76 | * @return mixed|object |
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77 | * @throws \Exception |
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78 | */ |
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79 | public function prepareDriver() |
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80 | { |
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81 | $this->driverInstance = $this->getDriverInstance(); |
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82 | |||
83 | return $this->driverInstance; |
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84 | } |
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85 | |||
86 | /** |
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87 | * Generate the captcha |
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88 | * |
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89 | * @return mixed |
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90 | * @throws \Exception |
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91 | */ |
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92 | public function generate() |
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93 | { |
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94 | return $this->getDriverInstance()->generate(); |
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95 | } |
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96 | |||
97 | /** |
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98 | * Verify CAPTCHA with given token. |
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99 | * |
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100 | * @param null|$token |
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101 | * @return mixed |
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102 | * @throws \Exception |
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103 | */ |
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104 | public function verify($token = null) |
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105 | { |
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106 | return $this->getDriverInstance()->verify($token); |
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107 | } |
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108 | |||
109 | /** |
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110 | * Retrieve current driver instance or generate new one. |
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111 | * |
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112 | * @return mixed |
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113 | * @throws \Exception |
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114 | */ |
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115 | protected function getDriverInstance() |
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116 | { |
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117 | if (!empty($this->driverInstance)) { |
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118 | return $this->driverInstance; |
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119 | } |
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120 | |||
121 | return $this->getFreshDriverInstance(); |
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122 | } |
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123 | |||
124 | /** |
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125 | * Get new driver instance |
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126 | * |
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127 | * @return mixed |
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128 | * @throws \Exception |
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129 | */ |
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130 | protected function getFreshDriverInstance() |
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131 | { |
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132 | $this->validateDriver(); |
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133 | $class = $this->config['map'][$this->driver]; |
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134 | |||
135 | if (!empty($this->callbackUrl)) { // use custom callbackUrl if exists |
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136 | $this->settings['callbackUrl'] = $this->callbackUrl; |
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137 | } |
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138 | |||
139 | return new $class($this->serviceProvider, $this->settings); |
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140 | } |
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141 | |||
142 | /** |
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143 | * Validate driver. |
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144 | * |
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145 | * @throws \Exception |
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146 | */ |
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147 | protected function validateDriver() |
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148 | { |
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149 | if (empty($this->driver)) { |
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150 | throw new DriverNotFoundException('Driver not selected or default driver does not exist.'); |
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151 | } |
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152 | |||
153 | if (empty($this->config['drivers'][$this->driver]) || empty($this->config['map'][$this->driver])) { |
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154 | throw new DriverNotFoundException('Driver not found in config file. Try updating the package.'); |
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155 | } |
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156 | |||
157 | if (!class_exists($this->config['map'][$this->driver])) { |
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158 | throw new DriverNotFoundException('Driver source not found. Please update the package.'); |
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159 | } |
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160 | |||
161 | $reflect = new \ReflectionClass($this->config['map'][$this->driver]); |
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162 | |||
163 | if (!$reflect->implementsInterface(DriverInterface::class)) { |
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164 | throw new \Exception("Driver must be an instance of Contracts\DriverInterface."); |
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165 | } |
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166 | } |
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167 | } |
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168 |