<?php

/*
 * This file is part of RaspiSMS.
 *
 * (c) Pierre-Lin Bonnemaison <plebwebsas@gmail.com>
 *
 * This source file is subject to the GPL-3.0 license that is bundled
 * with this source code in the file LICENSE.
 */

namespace controllers\internals;

    class Scheduled extends StandardController
    {
        protected $model = null;

        /**
         * Get the model for the Controller
         * @return \descartes\Model
         */
        protected function get_model () : \descartes\Model
        {
            $this->model = $this->model ?? new \models\Scheduled($this->bdd);
            return $this->model;
        } 

        /**
         * Create a scheduled
         * @param int $id_user : User to insert scheduled for
         * @param $at : Scheduled date to send
         * @param string $text : Text of the message
         * @param ?string $origin : Origin number of the message, null by default
         * @param bool $flash : Is the sms a flash sms, by default false
         * @param array $numbers : Numbers to send message to
         * @param array $contacts_ids : Contact ids to send message to
         * @param array $groups_ids : Group ids to send message to
         * @param array $conditional_group_ids : Conditional Groups ids to send message to
         * @return bool : false on error, new id on success
         */
        public function create (int $id_user, $at, string $text, ?string $origin = null, bool $flash = false, array $numbers = [], array $contacts_ids = [], array $groups_ids = [], array $conditional_group_ids = [])
        {
            $scheduled = [ 
                'id_user' => $id_user,
                'at' => $at,
                'text' => $text,
                'origin' => $origin,
                'flash' => $flash,
            ];

            if ($origin)
            {
                $internal_phone = new Phone($this->bdd);
                $find_phone = $internal_phone->get_by_number_and_user($id_user, $origin);

                if (!$find_phone)
                {
                    return false;
                }
            }
            
            
            $id_scheduled = $this->get_model()->insert($scheduled);
            if (!$id_scheduled)
            {
                $date = date('Y-m-d H:i:s');
                $internal_event = new Event($this->bdd);
                $internal_event->create($id_user, 'SCHEDULED_ADD', 'Ajout d\'un Sms pour le ' . $date . '.');
                return false;
            }

            foreach ($numbers as $number)
            {
                $this->get_model()->insert_scheduled_number($id_scheduled, $number);
            }

            $internal_contact = new Contact($this->bdd);
            foreach ($contacts_ids as $contact_id)
            {
                $find_contact = $internal_contact->get_for_user($id_user, $contact_id);
                if (!$find_contact)
                {
                    continue;
                }

                $this->get_model()->insert_scheduled_contact_relation($id_scheduled, $contact_id);
            }

            $internal_group = new Group($this->bdd);
            foreach ($groups_ids as $group_id)
            {
                $find_group = $internal_group->get_for_user($id_user, $group_id);
                if (!$find_group)
                {
                    continue;
                }

                $this->get_model()->insert_scheduled_group_relation($id_scheduled, $group_id);
            }
            
            $internal_conditional_group = new ConditionalGroup($this->bdd);
            foreach ($conditional_group_ids as $conditional_group_id)
            {
                $find_group = $internal_conditional_group->get_for_user($id_user, $conditional_group_id);
                if (!$find_group)
                {
                    continue;
                }

                $this->get_model()->insert_scheduled_conditional_group_relation($id_scheduled, $conditional_group_id);
            }

            return $id_scheduled;
        }


        /**
         * Update a scheduled
         * @param int $id_user : User to insert scheduled for
         * @param int $id_scheduled : Scheduled id
         * @param $at : Scheduled date to send
         * @param string $text : Text of the message
         * @param ?string $origin : Origin number of the message, null by default
         * @param bool $flash : Is the sms a flash sms, by default false
         * @param array $numbers : Numbers to send message to
         * @param array $contacts_ids : Contact ids to send message to
         * @param array $groups_ids : Group ids to send message to
         * @param array $conditional_group_ids : Conditional Groups ids to send message to
         * @return bool : false on error, new id on success
         */
        public function update_for_user (int $id_user, int $id_scheduled, $at, string $text, ?string $origin = null, bool $flash = false, array $numbers = [], array $contacts_ids = [], array $groups_ids = [], array $conditional_group_ids = [])
        {
            $scheduled = [ 
                'id_user' => $id_user,
                'at' => $at,
                'text' => $text,
                'origin' => $origin,
                'flash' => $flash,
            ];


            if ($origin)
            {
                $internal_phone = new Phone($this->bdd);
                $find_phone = $internal_phone->get_by_number_and_user($id_user, $origin);

                if (!$find_phone)
                {
                    return false;
                }
            }

            $success = (bool) $this->get_model()->update_for_user($id_user, $id_scheduled, $scheduled);

            $this->get_model()->delete_scheduled_numbers($id_scheduled);
            $this->get_model()->delete_scheduled_contact_relations($id_scheduled);
            $this->get_model()->delete_scheduled_group_relations($id_scheduled);
            $this->get_model()->delete_scheduled_conditional_group_relations($id_scheduled);

            foreach ($numbers as $number)
            {
                $this->get_model()->insert_scheduled_number($id_scheduled, $number);
            }
            
            $internal_contact = new Contact($this->bdd);
            foreach ($contacts_ids as $contact_id)
            {
                $find_contact = $internal_contact->get_for_user($id_user, $contact_id);
                if (!$find_contact)
                {
                    continue;
                }

                $this->get_model()->insert_scheduled_contact_relation($id_scheduled, $contact_id);
            }

            $internal_group = new Group($this->bdd);
            foreach ($groups_ids as $group_id)
            {
                $find_group = $internal_group->get_for_user($id_user, $group_id);
                if (!$find_group)
                {
                    continue;
                }

                $this->get_model()->insert_scheduled_group_relation($id_scheduled, $group_id);
            }
            
            $internal_conditional_group = new ConditionalGroup($this->bdd);
            foreach ($conditional_group_ids as $conditional_group_id)
            {
                $find_group = $internal_conditional_group->get_for_user($id_user, $conditional_group_id);
                if (!$find_group)
                {
                    continue;
                }

                $this->get_model()->insert_scheduled_conditional_group_relation($id_scheduled, $conditional_group_id);
            }

            return true;
        }


        /**
         * Get messages scheduled before a date for a number and a user
         * @param int $id_user : User id
         * @param $date : Date before which we want messages
         * @param string $number : Number for which we want messages
         * @return array
         */
        public function gets_before_date_for_number_and_user (int $id_user, $date, string $number)
        {
            return $this->get_model()->gets_before_date_for_number_and_user($id_user, $date, $number);
        }


        /**
         * Get all messages to send and the number to use to send theme
         * @return array : [['id_scheduled', 'text', 'origin', 'destination', 'flash'], ...]
         */
        public function get_smss_to_send ()
        {
            $smss_to_send = [];
            
            $internal_templating = new \controllers\internals\Templating();
            $internal_setting = new \controllers\internals\Setting($this->bdd);
            $internal_group = new \controllers\internals\Group($this->bdd);
            $internal_conditional_group = new \controllers\internals\ConditionalGroup($this->bdd);
            $internal_phone = new \controllers\internals\Phone($this->bdd);

            $users_settings = [];
            $users_phones = [];

            $now = new \DateTime();
            $now = $now->format('Y-m-d H:i:s');
            $scheduleds = $this->get_model()->gets_before_date($now);
            foreach ($scheduleds as $scheduled)
            {
                if (!isset($users_settings[$scheduled['id_user']]))
                {
                    $users_settings[$scheduled['id_user']] = [];
                    
                    $settings = $internal_setting->gets_for_user($scheduled['id_user']);
                    foreach ($settings as $name => $value)
                    {
                        $users_settings[$scheduled['id_user']][$name] = $value;
                    }
                }

                if (!isset($users_phones[$scheduled['id_user']]))
                {
                    $users_phones[$scheduled['id_user']] = [];

                    $phones = $internal_phone->gets_for_user($scheduled['id_user']);
                    foreach ($phones as $phone)
                    {
                        $users_phones[$scheduled['id_user']][] = $phone;
                    }
                }

                $messages = [];

                //Add messages for numbers
                $numbers = $this->get_numbers($scheduled['id']);
                foreach ($numbers as $number)
                {
                    $message = [
                        'id_scheduled' => $scheduled['id'],
                        'origin' => $scheduled['origin'],
                        'destination' => $number['number'],
                        'flash' => $scheduled['flash'],
                    ];

                    if ($message['origin'] == null)
                    {
                        $k = array_rand($users_phones[$scheduled['id_user']]);
                        $rnd_phone = $users_phones[$scheduled['id_user']][$k];
                        $message['origin'] = $rnd_phone['number'];
                    }

                    if ((int) ($users_settings[$scheduled['id_user']]['templating'] ?? false))
                    {
                        $render = $internal_templating->render($scheduled['text']);

                        if (!$render['success'])
                        {
                            continue;
                        }

                        $message['text'] = $render['result'];
                    }
                    else
                    {
                        $message['text'] = $scheduled['text'];
                    }

                    $messages[] = $message;
                }


                //Add messages for contacts
                $contacts = $this->get_contacts($scheduled['id']);

                $groups = $this->get_groups($scheduled['id']);
                foreach ($groups as $group)
                {
                    $contacts_to_add = $internal_group->get_contacts($group['id']);
                    $contacts = array_merge($contacts, $contacts_to_add);
                }

                $conditional_groups = $this->get_conditional_groups($scheduled['id']);
                foreach ($conditional_groups as $conditional_group)
                {
                    $contacts_to_add = $internal_conditional_group->get_contacts_for_condition_and_user($scheduled['id_user'], $conditional_group['condition']);
                    $contacts = array_merge($contacts, $contacts_to_add);
                }

                $added_contacts = [];
                foreach ($contacts as $contact)
                {
                    if ($added_contacts[$contact['id']] ?? false)
                    {
                        continue;
                    }

                    $added_contacts[$contact['id']] = true;

                    $message = [
                        'id_scheduled' => $scheduled['id'],
                        'origin' => $scheduled['origin'],
                        'destination' => $number['number'],
                        'flash' => $scheduled['flash'],
                    ];
                    
                    if ($message['origin'] == null)
                    {
                        $k = array_rand($users_phones[$scheduled['id_user']]);
                        $rnd_phone = $users_phones[$scheduled['id_user']][$k];
                        $message['origin'] = $rnd_phone['number'];
                    }
                    
                    if ((int) ($users_settings[$scheduled['id_user']]['templating'] ?? false))
                    {
                        $contact['datas'] = json_decode($contact['datas'], true);
                        $datas = ['contact' => $contact];
                        $render = $internal_templating->render($scheduled['text'], $datas);

                        if (!$render['success'])
                        {
                            continue;
                        }

                        $message['text'] = $render['result'];
                    }
                    else
                    {
                        $message['text'] = $scheduled['text'];
                    }

                    $messages[] = $message;
                }

                foreach ($messages as $message)
                {
                    //Remove empty messages
                    if (trim($message['text']) == '')
                    {
                        continue;
                    }

                    $smss_to_send[] = $message;
                }
            }

            return $smss_to_send;
        }
        
        
        /**
         * Send a scheduled message
         * @param int $id_scheduled : Id of the message to send
         * @param string $text : Text of the message
         * @param string $origin : Origin of the message
         * @param string $destination : Destination of the message
         * @param bool $flash : Is the message a flash sms
         * return bool: false on error, true else
         */
        public function send (int $id_scheduled, string $text, string $origin, string $destination, bool $flash) : bool
        {
            //TODO : Do the sending (càd, instanciate a phone adapter and send the message)

            $now = new \DateTime();
            $at = $now->format('Y-m-d H:i:s');
            $internal_sended = new \controllers\internals\Sended($this->bdd);
            $this->delete($id_scheduled); 
            return $internal_sended->create($at, $text, $origin, $destination, $flash);
        }
        
        
        /**
         * Return numbers for a scheduled message
         * @param int $id_scheduled : Scheduled id
         * @return array
         */
        public function get_numbers(int $id_scheduled)
        {
            return $this->get_model()->get_numbers($id_scheduled);
        }


        /**
         * Return contacts for a scheduled message
         * @param int $id_scheduled : Scheduled id
         * @return array
         */
        public function get_contacts(int $id_scheduled)
        {
            return $this->get_model()->get_contacts($id_scheduled);
        }


        /**
         * Return groups for a scheduled message
         * @param int $id_scheduled : Scheduled id
         * @return array
         */
        public function get_groups(int $id_scheduled)
        {
            return $this->get_model()->get_groups($id_scheduled);
        }
        
        
        /**
         * Return conditional groups for a scheduled message
         * @param int $id_scheduled : Scheduled id
         * @return array
         */
        public function get_conditional_groups(int $id_scheduled)
        {
            return $this->get_model()->get_conditional_groups($id_scheduled);
        }
    }