<?php

namespace cx_newsletter;

class send_log_repository 
extends repository {
    public function load_all(
        campaign $target, 
        ?int $limit = null, 
        ?bool $sended = null
    ) : array {
        if (!$target->has_id()) {
            throw $this->get_blank_id_exception();
        }

        $campaigns = $this->get_tables()->campaigns();
        $customers = $this->get_tables()->customers();
        $send_log = $this->get_tables()->send_log();

        $query = new \cx_appengine\string_builder();
        $query->push('select '.$customers.'.id as customer ');
        $query->push('from '.$campaigns.' ');
        $query->push('inner join '.$customers.' ');
        $query->push('left outer join '.$send_log.' ');
        $query->push('on '.$customers.'.id='.$send_log.'.customer ');
        $query->push('and '.$campaigns.'.id='.$send_log.'.campaign ');
        $query->push('where '.$campaigns.'.id='.$target->get_id().' ');
        $query->push('and '.$campaigns.'.test='.$customers.'.tester ');

        if ($target->group !== null and $target->group->has_id()) {
            $query->push('and '.$customers.'.grouped=');
            $query->push(strval($target->group->get_id().' '));
        }

        if ($target->type === campaign_type::email) {
            $query->push('and '.$customers.'.email != "" ');
        } elseif ($target->type === campaign_type::sms) {
            $query->push('and '.$customers.'.phone_number != "" ');
        }
        
        if ($sended === false) {
            $query->push('and '.$send_log.'.id is NULL ');
        } elseif ($sended === true) {
            $query->push('and '.$send_log.'.id is not NULL ');
        }

        $query->push($this->parse_limit($limit));

        $result = $this->get_database()->get_results($query->get(), ARRAY_A);

        if ($result === null) {
            throw $this->get_exception('load_all');
        }

        $next = [];
        $mapper = new customers_mapper(
            $this->get_database(),
            $this->get_tables()
        );

        foreach ($result as $row) {
            $customer = new customer($row['customer']);
            $customer = $mapper->complete($customer);

            array_push($next, $customer);
        }

        return $next;
    }

    public function mark_send(campaign $from, customer $who) : self {
        if (!$from->has_id() or !$who->has_id()) {
            throw $this->get_blank_id_exception();
        }

        $log = [];
        $log['campaign'] = $from->get_id();
        $log['customer'] = $who->get_id();
        $log['sended'] = \current_time('mysql', 1);

        $this->get_database()->insert($this->get_tables()->send_log(), $log);
    
        return $this;
    }

    public function count(campaign $target, ?bool $sended = null) : int {
        if (!$target->has_id()) {
            throw $this->get_blank_id_exception();
        }

        $campaigns = $this->get_tables()->campaigns();
        $customers = $this->get_tables()->customers();
        $send_log = $this->get_tables()->send_log();

        $query = new \cx_appengine\string_builder();
        $query->push('select count('.$customers.'.id) ');
        $query->push('from '.$campaigns.' ');
        $query->push('inner join '.$customers.' ');
        $query->push('left outer join '.$send_log.' ');
        $query->push('on '.$customers.'.id='.$send_log.'.customer ');
        $query->push('and '.$campaigns.'.id='.$send_log.'.campaign ');
        $query->push('where '.$campaigns.'.id='.$target->get_id().' ');
        $query->push('and '.$campaigns.'.test='.$customers.'.tester ');
        
        if ($target->type === campaign_type::email) {
            $query->push('and '.$customers.'.email != "" ');
        } elseif ($target->type === campaign_type::sms) {
            $query->push('and '.$customers.'.phone_number != "" ');
        }
   
        if ($sended === false) {
            $query->push('and '.$send_log.'.id is NULL ');
        } elseif ($sended === true) {
            $query->push('and '.$send_log.'.id is not NULL ');
        }

        if ($target->group !== null and $target->group->has_id()) {
            $query->push('and '.$customers.'.grouped=');
            $query->push(strval($target->group->get_id().' '));
        }

        $result = $this->get_database()->get_var($query->get());
        
        if ($result === null) {
            throw $this->get_exception('count');
        }
        
        return intval($result);
    }
}