<?php

namespace LDC\LDCCRM\Models;

use LDC\LDCCRM\Enums\QuestionType;
use LDC\LDCCRM\Utils;
use TypeError;

/**
 * This class represents a question
 * It has some static methods to retrieve questions and answers
 *
 * @property string $id The question id
 * @property string $question The actual question as a string
 * @property \LDC\LDCCRM\Enums\QuestionType $type
 * The question type to display,
 * it also hints wether it can accept one or multiple responses,
 * so only checkbox allows multiple responses
 * @property \LDC\LDCCRM\Models\Answer[] $answers An array with answers
 *
 * @category Api Models
 * @package LDCCrmClient
 * @subpackage models
 * @author Jérémy Munsch <jeremy.munsch@ldc.fr>
 */
class Question extends CrmClientModel
{
    /**
     * The question id
     *
     * Required
     * Field Type bigInt
     *
     * @var integer
     */
    private $id;

    /**
     * The actual question as a string
     *
     * Required
     * Max length 255
     * Field Type varchar
     *
     * @var string
     */
    private $question = null;

    /**
     * The question type
     *
     * Validate: in QuestionType::toValues()
     *
     * Required
     * Field Type tinyInteger
     *
     * @var \LDC\LDCCRM\Enums\QuestionType
     */
    private $type = null;

    /**
     * The question answers
     *
     * \LDC\LDCCRM\Models\Answer
     *
     * @var array
     */
    private $answers = [];

    /**
     * The crm customer fields
     *
     * @var array
     */
    protected $modelFields = [
        'id', 'question', 'type', 'answers'
    ];

    /**
     * Validation rules
     *
     * @var array
     */
    protected static $validation = [
        'id' => 'required|int',
        'question' => 'required|string|max:255',
        'type' => ['required'],
        'answers' => 'required|array'
    ];

    /**
     * Question
     *
     * @param array $properties
     * @throws \LDC\LDCCRM\Exceptions\ValidationException If a field could not be validated.
     */
    public function __construct(array $properties = [])
    {
        parent::__construct();
        $this->fill($properties);
        return $this;
    }

    /**
     * General accessor
     *
     * @param string $field
     * @return mixed
     */
    public function __get(string $field)
    {
        $props = \array_diff(
            $this->modelFields,
            $this->invisibleFields
        );
        if (in_array($field, $props)) {
            if ($field === 'type' and !\is_object($this->{$field})) {
                return QuestionType::make($this->{$field});
            }
        }
        return parent::__get($field);
    }

    /**
     * Set prop on the model.
     *
     * @param string $field
     * @param mixed  $value
     * @return void
     * @throws \LDC\LDCCRM\Exceptions\ValidationException If a field could not be validated.
     * @throws \LDC\LDCCRM\Exceptions\AccessError If trying to set a value on a unknown property.
     */
    public function __set(string $field, $value): void
    {
        if ($field === 'type') {
            $value = (\is_object($value) and
                get_class($value) === QuestionType::class) ? $value->value : $value;
        }
        parent::__set($field, $value);
    }

    /**
     * Fill values into model using validation rules.
     *
     * @param array $properties
     * @return void
     * @throws \LDC\LDCCRM\Exceptions\ValidationException If a field could not be validated.
     */
    public function fill(array $properties)
    {
        if (isset($properties['type'])) {
            try {
                $properties['type'] = (\is_object($properties['type']) and
                    get_class($properties['type']) === QuestionType::class) ?
                    $properties['type']->value : (ctype_digit($properties['type']) ?
                        (int)$properties['type'] : $properties['type']);
            } catch (TypeError | \BadMethodCallException $e) {
                // * Cast anyway
                $properties['type'] = (int)$properties['type'];
            }
        }
        parent::fill($properties);
    }

    /**
     * Validate all model properties
     *
     * @param array $ignore
     * @return array the validated values
     * @throws \LDC\LDCCRM\Exceptions\ValidationException If a field could not be validated.
     */
    protected function validateAllValues(array $ignore = []): array
    {
        $out = [];
        if (!\in_array('type', $ignore)) {
            try {
                $this->validateValue('type', QuestionType::make(Utils::getRawProperty($this, 'type')));
            } catch (TypeError | \BadMethodCallException $e) {
                // Use this to throw validation error.
                $this->validateValue('type', Utils::getRawProperty($this, 'type'));
            }
            $out['type'] = Utils::getRawProperty($this, 'type');
        }
        return array_merge($out, parent::validateAllValues(array_merge(['type'], $ignore)));
    }

    // * PUBLIC METHODS

    /**
     * Get all questions only
     *
     * @return array of \LDC\LDCCRM\Models\Question
     * @throws \LDC\LDCCRM\Exceptions\CrmException If an error occurs on server side or on getting response.
     * @throws \LDC\LDCCRM\Exceptions\ApiErrorException If any error or \LDC\LDCCRM\Enums\ApiError occurs.
     * @phpcs:ignore Squiz.Commenting.FunctionCommentThrowTag.WrongNumber
     */
    public static function all(): array
    {
        static::setUpApiInterface();
        $request = Utils::getResquest('apiV2.questions.index');

        $response = static::$apiInterface->call($request);
        $out      = [];
        foreach ($response->data as $question) {
            $answers             = \array_map(function ($answer) {
                return new Answer($answer);
            }, $question['answers']);
            $question['answers'] = $answers;
            $out[]               = new self($question);
        }
        return $out;
    }

    /**
     * Get all the questions with customer answers
     *
     * @param \LDC\LDCCRM\Models\Customer $customer
     * @return array
     *
     *   [
     *        0 => [
     *             'question' => \LDC\LDCCRM\Models\Question,
     *             'customerAnswers' => \LDC\LDCCRM\Models\Answer[]
     *        ]
     *   ]
     *
     * with \LDC\LDCCRM\Models\Question[]
     * and the customer \LDC\LDCCRM\Models\Answer[]
     * @throws \LDC\LDCCRM\Exceptions\ValidationException If a customer's hashcode could not be validated.
     * @throws \LDC\LDCCRM\Exceptions\CrmException If an error occurs on server side or on getting response.
     * @throws \LDC\LDCCRM\Exceptions\ApiErrorException If any error or \LDC\LDCCRM\Enums\ApiError occurs.
     * Possibles are : - modelNotFound, If the customer could not be found(CRM side).
     * @phpcs:ignore Squiz.Commenting.FunctionCommentThrowTag.WrongNumber
     */
    public static function allWithCustomerAnswers(Customer $customer): array
    {
        self::assertValidHascode($customer->hashcode);
        static::setUpApiInterface();
        $request = Utils::getResquest('apiV2.questions.indexWithResponse', [
            'serviceCustomer' => $customer->hashcode
        ]);

        $response = static::$apiInterface->call($request);
        $out      = [];
        foreach ($response->data as $question) {
            $answers         = \array_map(function ($answer) {
                return new Answer($answer);
            }, $question['answers']);
            $customerAnswers = \array_map(function ($answer) {
                return new Answer($answer);
            }, $question['customerAnswers']);
            unset($question['customerAnswers']);
            $question['answers'] = $answers;
            $out[]               = [
                'question' => new self($question),
                'customerAnswers' => $customerAnswers,
            ];
        }
        return $out;
    }

    /**
     * Get unanswered question for a specific customer
     *
     * @param \LDC\LDCCRM\Models\Customer $customer
     * @return array of \LDC\LDCCRM\Models\Question
     * @throws \LDC\LDCCRM\Exceptions\ValidationException If a customer's hashcode could not be validated.
     * @throws \LDC\LDCCRM\Exceptions\CrmException If an error occurs on server side or on getting response.
     * @throws \LDC\LDCCRM\Exceptions\ApiErrorException If any error or \LDC\LDCCRM\Enums\ApiError occurs.
     * Possibles are : - modelNotFound, If the customer could not be found(CRM side).
     * @phpcs:ignore Squiz.Commenting.FunctionCommentThrowTag.WrongNumber
     */
    public static function unansweredBy(Customer $customer): array
    {
        self::assertValidHascode($customer->hashcode);
        static::setUpApiInterface();
        $request = Utils::getResquest(
            'apiV2.questions.unAnsweredBy',
            ['serviceCustomer' => $customer->hashcode]
        );

        $response = static::$apiInterface->call($request);
        $out      = [];
        foreach ($response->data as $question) {
            $answers             = \array_map(function ($answer) {
                return new Answer($answer);
            }, $question['answers']);
            $question['answers'] = $answers;
            $out[]               = new self($question);
        }
        return $out;
    }

    /**
     * Serialize this object to an array
     *
     * @return array
     */
    public function jsonSerialize()
    {
        return [
            'id' => $this->id,
            'question' => $this->question,
            'type' => $this->type,
            'answers' => $this->answers
        ];
    }
}