<?php

namespace App\Database\Migrations;

use CodeIgniter\Database\Migration;

class SeedNewStudentAssessmentQuestions extends Migration
{
    private const POOL_NAME = 'New Student Assessment';

    private const QUESTIONS = [
        [
            'type' => 'essay',
            'text' => 'What is the student’s Islamic education background?',
        ],
        [
            'type' => 'short_answer',
            'text' => 'What is the student’s Arabic competency level?',
        ],
        [
            'type' => 'short_answer',
            'text' => 'What is the student’s English competency level?',
        ],
        [
            'type' => 'essay',
            'text' => 'Has the student attended any Sunday/Islamic school in the past? If YES, which one?',
        ],
        [
            'type' => 'essay',
            'text' => 'Has the student memorized any Surahs? If yes, which one(s)?',
        ],
        [
            'type' => 'essay',
            'text' => 'Why have the parents chosen AlRahma Sunday School for their child(ren)?',
        ],
        [
            'type' => 'essay',
            'text' => 'Any serious/special medical condition about the student which we have to be aware of?',
        ],
        [
            'type' => 'essay',
            'text' => 'If surnames of enrolled students are different, please confirm if they are all siblings; if NOT, then please specify their relationship to each other:',
        ],
        [
            'type' => 'essay',
            'text' => 'Any other questions / concerns that the parents may have?',
        ],
    ];

    public function up(): void
    {
        if (! $this->db->tableExists('question_pools') || ! $this->db->tableExists('assessment_questions')) {
            return;
        }

        $pool = $this->db->table('question_pools')
            ->select('id')
            ->where('name', self::POOL_NAME)
            ->get()
            ->getRowArray();

        if ($pool === null) {
            $now = date('Y-m-d H:i:s');
            $this->db->table('question_pools')->insert([
                'name' => self::POOL_NAME,
                'subject_tag' => 'New Student Intake',
                'created_by' => null,
                'created_at' => $now,
                'updated_at' => $now,
            ]);
            $poolId = (int) $this->db->insertID();
        } else {
            $poolId = (int) $pool['id'];
        }

        if ($poolId <= 0) return;

        $now = date('Y-m-d H:i:s');
        $maxOrder = $this->db->table('assessment_questions')->selectMax('order_index')->where('pool_id', $poolId)->get()->getRowArray();
        $nextOrder = ((int) ($maxOrder['order_index'] ?? 0)) + 1;
        foreach (self::QUESTIONS as $question) {
            $exists = $this->db->table('assessment_questions')
                ->where('pool_id', $poolId)
                ->where('text', $question['text'])
                ->countAllResults() > 0;
            if ($exists) continue;

            $this->db->table('assessment_questions')->insert([
                'pool_id' => $poolId,
                'type' => $question['type'],
                'text' => $question['text'],
                'options' => null,
                'correct_answer' => null,
                'points' => 0,
                'order_index' => $nextOrder++,
                'created_at' => $now,
                'updated_at' => $now,
            ]);
        }
    }

    public function down(): void
    {
        if (! $this->db->tableExists('question_pools') || ! $this->db->tableExists('assessment_questions')) {
            return;
        }

        $pool = $this->db->table('question_pools')->select('id')->where('name', self::POOL_NAME)->get()->getRowArray();
        if ($pool === null) return;

        $poolId = (int) $pool['id'];
        foreach (array_column(self::QUESTIONS, 'text') as $text) {
            $question = $this->db->table('assessment_questions')->select('id')->where(['pool_id' => $poolId, 'text' => $text])->get()->getRowArray();
            if ($question === null) continue;
            if ($this->db->tableExists('assessment_form_questions')
                && $this->db->table('assessment_form_questions')->where('question_id', (int) $question['id'])->countAllResults() > 0) {
                continue;
            }
            $this->db->table('assessment_questions')->where('id', (int) $question['id'])->delete();
        }

        $hasQuestions = $this->db->table('assessment_questions')->where('pool_id', $poolId)->countAllResults() > 0;
        $hasForms = $this->db->tableExists('assessment_forms')
            && $this->db->table('assessment_forms')->where('pool_id', $poolId)->countAllResults() > 0;
        if (! $hasQuestions && ! $hasForms) {
            $this->db->table('question_pools')->where('id', $poolId)->delete();
        }
    }
}