<?php
/*
 SPDX-License-Identifier: AGPL-3.0-only
 SPDX-FileCopyrightText: © 2024 Millions Missing FRANCE <info@millionsmissing.fr>
 */

namespace Modules\MMFRestrictedCustomers;

use App\CustomerChannel;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Storage;
use Watson\Rememberable\Rememberable;
use Modules\MMFRestrictedCustomers\Mailbox;
use App\Customer as BaseCustomer;

class Customer extends BaseCustomer {
	/**
	 * Attributes fillable using fill() method.
	 *
	 * @var [type]
	 */
	protected $fillable = [
		// Default list, imported from BaseCustomer.
		'first_name',
		'last_name',
		'company',
		'job_title',
		'address',
		'city',
		'state',
		'zip',
		'country',
		'photo_url',
		'age',
		'gender',
		'notes',
		'channel',
		'channel_id',
		'social_profiles',
		// Addition specific to this package.
		'mailbox_id',
	];

	/**
	 * Get the Mailbox that is allowed to access this Customer information.
	 */
	public function mailbox() {
		return $this->belongsTo(Mailbox::class);
	}

    /**
     * Create customer or get existing and fill empty fields.
     *
     * @param string $email
     * @param array  $data  [description]
     *
     * @return [type] [description]
     */
	public static function create($email, $data = []) {
		$new = false;

		$email = Email::sanitizeEmail($email);
		if (!$email) {
			return null;
		}
		$email_obj = Email::where('email', $email)->first();
		if ($email_obj) {
			$customer = $email_obj->customer;

			// In case somehow the email has no customer.
			if (!$customer) {
				// Customer will be saved and connected to the email later.
				$customer = new self();
			}

			// Update name if empty.
			/*if (empty($customer->first_name) && !empty($data['first_name'])) {
				$customer->first_name = $data['first_name'];
				if (empty($customer->last_name) && !empty($data['last_name'])) {
					$customer->last_name = $data['last_name'];
				}
				$customer->save();
			}*/
		} else {
			$customer = new self();
			$email_obj = new Email();
			$email_obj->email = $email;

			$new = true;
		}
		// Ensure that the Mailbox relationship is set, if provided.
		if ( in_array('mailbox_id', $data) )
			$customer->mailbox_id = $data['mailbox_id'];

		// Set empty fields
		if ($customer->setData($data, false) || !$customer->id) {
			$customer->save();
		}

		if (empty($email_obj->id) || !$email_obj->customer_id || $email_obj->customer_id != $customer->id) {
			// Email may have been set in setData().
			$save_email = true;
			if (!empty($data['emails']) && is_array($data['emails'])) {
				foreach ($data['emails'] as $data_email) {
					if (is_string($data_email) && $data_email == $email) {
						$save_email = false;
						break;
					}
					if (is_array($data_email) && !empty($data_email['value']) && $data_email['value'] == $email) {
						$save_email = false;
						break;
					}
				}
			}
			if ($save_email) {
				$email_obj->customer()->associate($customer);
				$email_obj->save();
			}
		}

		// Todo: check phone uniqueness.

		if ($new) {
			\Eventy::action('customer.created', $customer);
		}

		return $customer;
	}

    /**
     * Set empty fields.
     */
	public function setData($data, $replace_data = true, $save = false) {
		// Set the Mailbox this Customer should be linked to.
		// TODO: Throw an error if the Mailbox is not set.
		if ( isset($data['mailbox']) ) {
			// TODO: Check that the current user is allowed to access this Mailbox.
			$data['mailbox_id'] = $data['mailbox'];
			unset($data['mailbox']);
		}

		return parent::setData($data, $replace_data, $save);
	}

	/**
	 * Only return a Customer instance if it is available to the current User.
	 *
	 * @param  int    $id
	 * @param  array  $columns
	 * @return mixed|static
	 */
	public static function find($id, $columns = ['*']) {
		// Get the list of Mailboxes the current User has access to.
		$user = auth()->user();
		$mailboxes = $user->mailboxesIdsCanView();

		$customer = self
			::where('id', '=', $id)
			->whereIn('mailbox_id', $mailboxes)
			->first($columns);
	}

	/**
	 * Get the Mailboxes this Customer is linked to through Conversations.
	 *
	 * @return array
	 */
	public function mailboxesThroughConversations() {
		return $this
			->conversations
			->pluck('mailbox')
			->unique();
	}

	/**
	 * If this Customer is linked to a single Mailbox through Conversations, link it to it.
	 */
	public function linkToMailboxThroughConversations() {
		$mailboxes = $this->mailboxesThroughConversations();
		if ( $mailboxes->count() == 1 ) {
			$this->mailbox_id = $mailboxes->first()->id;
			$this->save();
		}
	}

	/**
	 * Set customer emails.
	 *
	 * @param array $emails
	 */
	public function syncEmails($emails) {
		if (is_array($emails)) {
			$deleted_emails = [];
			foreach ($this->emails as $email) {
				foreach ($emails as $email_address) {
					if (Email::sanitizeEmail($email->email) == Email::sanitizeEmail($email_address)) {
						continue 2;
					}
				}
				$deleted_emails[] = $email;
			}
			$mailbox = $this->mailbox;
			foreach ($emails as $email_address) {
				$email_address = Email::sanitizeEmail($email_address);
				if (!$email_address) {
					continue;
				}
				$email = Email
					::whereInMailbox($mailbox)
					->where('email', $email_address)
					->first();
				$new_emails = [];
				if ($email) {
					// Assign email to current customer
					if ($email->customer_id != $this->id) {
						$email->customer()->associate($this);
						$email->save();
					}
				} else {
					$new_emails[] = new Email(['email' => $email_address]);
				}
				if ($new_emails) {
					$this->emails()->saveMany($new_emails);
				}
			}

			foreach ($deleted_emails as $email) {
				if (Conversation::where('customer_email', $email->email)->exists()) {
					// Create customers for deleted emails
					// if there is a conversation with 'customer_email'.
					$customer = new self();
					$customer->save();
					$email->customer()->associate($customer);
					$email->save();
				} else {
					// Simply delete an email.
					$email->delete();
				}
			}
		}
	}

	/**
	 * Add new email to customer.
	 */
	public function addEmail($email_address, $check_if_exists = false) {
		// Check if email already exists and belongs to another customer.
		if ($check_if_exists) {
			$mailbox = $this->mailbox;
			$email = Email
				::whereInMailbox($mailbox)
				->where('email', $email_address)
				->first();
			if ($email && !empty($email->customer_id)) {
				return false;
			}
		}
		$new_email = new Email(['email' => $email_address]);
		$this->emails()->save($new_email);
	}
}