<?php
 
 namespace Illuminate\View\Compilers\Concerns;
 
 trait CompilesConditionals
 {
     /**
      * Identifier for the first case in switch statement.
      *
      * @var bool
      */
     protected $firstCaseInSwitch = true;
 
     /**
      * Compile the if-auth statements into valid PHP.
      *
      * @param  string|null  $guard
      * @return string
      */
     protected function compileAuth($guard = null)
     {
         $guard = is_null($guard) ? '()' : $guard;
 
         return "<?php if(auth()->guard{$guard}->check()): ?>";
     }
 
     /**
      * Compile the else-auth statements into valid PHP.
      *
      * @param  string|null  $guard
      * @return string
      */
     protected function compileElseAuth($guard = null)
     {
         $guard = is_null($guard) ? '()' : $guard;
 
         return "<?php elseif(auth()->guard{$guard}->check()): ?>";
     }
 
     /**
      * Compile the end-auth statements into valid PHP.
      *
      * @return string
      */
     protected function compileEndAuth()
     {
         return '<?php endif; ?>';
     }
 
     /**
      * Compile the if-guest statements into valid PHP.
      *
      * @param  string|null  $guard
      * @return string
      */
     protected function compileGuest($guard = null)
     {
         $guard = is_null($guard) ? '()' : $guard;
 
         return "<?php if(auth()->guard{$guard}->guest()): ?>";
     }
 
     /**
      * Compile the else-guest statements into valid PHP.
      *
      * @param  string|null  $guard
      * @return string
      */
     protected function compileElseGuest($guard = null)
     {
         $guard = is_null($guard) ? '()' : $guard;
 
         return "<?php elseif(auth()->guard{$guard}->guest()): ?>";
     }
 
     /**
      * Compile the end-guest statements into valid PHP.
      *
      * @return string
      */
     protected function compileEndGuest()
     {
         return '<?php endif; ?>';
     }
 
     /**
      * Compile the has-section statements into valid PHP.
      *
      * @param  string  $expression
      * @return string
      */
     protected function compileHasSection($expression)
     {
         return "<?php if (! empty(trim(\$__env->yieldContent{$expression}))): ?>";
     }
 
     /**
      * Compile the if statements into valid PHP.
      *
      * @param  string  $expression
      * @return string
      */
     protected function compileIf($expression)
     {
         return "<?php if{$expression}: ?>";
     }
 
     /**
      * Compile the unless statements into valid PHP.
      *
      * @param  string  $expression
      * @return string
      */
     protected function compileUnless($expression)
     {
         return "<?php if (! {$expression}): ?>";
     }
 
     /**
      * Compile the else-if statements into valid PHP.
      *
      * @param  string  $expression
      * @return string
      */
     protected function compileElseif($expression)
     {
         return "<?php elseif{$expression}: ?>";
     }
 
     /**
      * Compile the else statements into valid PHP.
      *
      * @return string
      */
     protected function compileElse()
     {
         return '<?php else: ?>';
     }
 
     /**
      * Compile the end-if statements into valid PHP.
      *
      * @return string
      */
     protected function compileEndif()
     {
         return '<?php endif; ?>';
     }
 
     /**
      * Compile the end-unless statements into valid PHP.
      *
      * @return string
      */
     protected function compileEndunless()
     {
         return '<?php endif; ?>';
     }
 
     /**
      * Compile the if-isset statements into valid PHP.
      *
      * @param  string  $expression
      * @return string
      */
     protected function compileIsset($expression)
     {
         return "<?php if(isset{$expression}): ?>";
     }
 
     /**
      * Compile the end-isset statements into valid PHP.
      *
      * @return string
      */
     protected function compileEndIsset()
     {
         return '<?php endif; ?>';
     }
 
     /**
      * Compile the switch statements into valid PHP.
      *
      * @param  string  $expression
      * @return string
      */
     protected function compileSwitch($expression)
     {
         $this->firstCaseInSwitch = true;
 
         return "<?php switch{$expression}:";
     }
 
     /**
      * Compile the case statements into valid PHP.
      *
      * @param  string  $expression
      * @return string
      */
     protected function compileCase($expression)
     {
         if ($this->firstCaseInSwitch) {
             $this->firstCaseInSwitch = false;
 
             return "case {$expression}: ?>";
         }
 
         return "<?php case {$expression}: ?>";
     }
 
     /**
      * Compile the default statements in switch case into valid PHP.
      *
      * @return string
      */
     protected function compileDefault()
     {
         return '<?php default: ?>';
     }
 
     /**
      * Compile the end switch statements into valid PHP.
      *
      * @return string
      */
     protected function compileEndSwitch()
     {
         return '<?php endswitch; ?>';
     }
 }