<?php

namespace App\Models;

use CodeIgniter\Model;

class DailyLearningLogModel extends Model
{
    protected $table = 'daily_learning_log';
    protected $primaryKey = 'num';
    protected $allowedFields = [
        'user_id', 'user_email', 'todate', 'start_time', 'end_time',
        'total_time', 'daily_words', 'repetition_count', 'interrupted_key','last_json_key', 'created_at'
    ];

    public function logDailyLearning($data)
    {
        $existingLog = $this->where('user_id', $data['user_id'])->where('todate', $data['todate'])->first();
        if (!$existingLog){
            $log = $this->where('user_id', $data['user_id'])
                ->orderBy('todate', 'desc')
                ->limit(1)
                ->first();

            if($log) {
                $interruptedKeys = json_decode($log['interrupted_key'], true);
                $maxkey = max(array_keys($interruptedKeys)) + 1;
            }else{
                $maxkey = 1;
            }

            $learningInfojosn = json_decode($data['learningInfo'])->learning_data;
            $learningInfo = json_decode($learningInfojosn,true);

            $studyData = [];
            for ($i = $maxkey; $i < $maxkey + $data['daily_words']; $i++) {
                if (isset($learningInfo[$i])) {
                    $studyData[$i] = $learningInfo[$i];
                } else {
                    break;
                }
            }
            $data['interrupted_key'] = json_encode($studyData);
            $data['last_json_key'] = $maxkey;

            $this->insert($data);
            $num = $this->getInsertID();
        }else{
            $num = $existingLog['num'];
        }
        $returndata = $this->where('num', $num)->first();
        return $returndata;
    }

    public function logDailyLearning_mod($data)
    {
        try {
            $existingLog = $this->where('user_id', $data['user_id'])->where('todate', $data['todate'])->first();
            if ($existingLog) {
                $log = $this->where('user_id', $data['user_id'])->where('todate <>', $data['todate'])
                    ->orderBy('todate', 'desc')
                    ->limit(1)
                    ->first();
                if ($log) {
                    $interruptedKeys = json_decode($log['interrupted_key'], true);
                    $maxkey = max(array_keys($interruptedKeys)) + 1;
                } else {
                    $maxkey = 1;
                }

                $learningInfo = json_decode($data['learningInfo'], true);  //전체 학습데이터

                $studyData = [];
                for ($i = $maxkey; $i < $maxkey + $data['daily_words']; $i++) {
                    if (isset($learningInfo[$i])) {
                        $studyData[$i] = $learningInfo[$i];
                    } else {
                        break;
                    }
                }
                $data['interrupted_key'] = json_encode($studyData);
                $data['last_json_key'] = $maxkey;

                $this->update($existingLog['num'], $data);
                $num = $existingLog['num'];

                $returndata = $this->where('num', $num)->first();
                return $returndata;

            }else{
                throw new \Exception("The 'email' index is not defined in the provided data.");
            }
        }catch(\Exception $e){
            log_message('error', 'today date null: ' . $e->getMessage());
            throw $e; // Re-throw exception to be handled by the calling code
        }

    }

    public function getInterruptedKey($userId, $date)
    {
        return $this->select('interrupted_key')->where('user_id', $userId)->where('date', $date)->first();
    }
}