namespace World\Earth\Europe\Hungary;

use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use App\Models\Question;
use App\Models\Solution;
use App\Models\Knowledge;
use Udemy;
use Google;
use StackOverFlow;
use GPT;

class Labodi_David extends People
{
use HasMotivation, HasGoals;

    protected $fillable = ['coffee', 'knowledge'];

    public function __construct()
    {
        $this->middleware(['PreventRequestsWithoutCoffee', 'IT_Administrator', 'Programmer']);
    }
    
    /**
     * Find the solution to a question.
     *
     * @param  Question  $question
     * @return Solution
     */
    public function findSolution(Question $question): Solution
    {
        if ($this->knowledge->contains($question)) {
            return $this->knowledge()->getSolution($question);
        }
        
        return $this->learn($question)->getSolution();
    }
    
    /**
     * Learn about a question and gather knowledge.
     *
     * @param  Question  $question
     * @return Knowledge
     * @throws CoffeeNotFoundException
     */
    private function learn(Question $question): Knowledge
    {
        $knowledge = new Knowledge();
        if ($this->hasDrankCoffee()) {
            while (!$knowledge->hasInformation()){
                $knowledge->collectInformation([
                    Google::search($question),
                    StackOverFlow::search($question),
                    GPT::ask($question)
                ]);
            }
            return $this->knowledge()->save($knowledge);
        } else {
            throw new CoffeeNotFoundException();
        }
    }
    
    /**
     * Get the knowledge relation.
     *
     * @return BelongsToMany
     */
    public function knowledge(): BelongsToMany
    {
        return $this->belongsToMany(Knowledge::class);
    }
    
    /**
     * Check if David has drank coffee.
     *
     * @return bool
     */
    private function hasDrankCoffee(): bool
    {
        return !empty($this->coffee);
    }
}