<?php

namespace App\Database\Migrations;

use CodeIgniter\Database\Migration;

class AddAuditFieldsToDoctorSpecializations extends Migration
{
    public function up(): void
    {
        if (! $this->db->tableExists('doctor_specializations')) {
            return;
        }

        $fields = [];

        if (! $this->db->fieldExists('status', 'doctor_specializations')) {
            $fields['status'] = [
                'type'       => 'TINYINT',
                'constraint' => 1,
                'default'    => 1,
                'after'      => 'specialization_id',
            ];
        }

        if (! $this->db->fieldExists('created_at', 'doctor_specializations')) {
            $fields['created_at'] = [
                'type' => 'DATETIME',
                'null' => true,
                'after' => 'status',
            ];
        }

        if (! $this->db->fieldExists('updated_at', 'doctor_specializations')) {
            $fields['updated_at'] = [
                'type' => 'DATETIME',
                'null' => true,
                'after' => 'created_at',
            ];
        }

        if (! $this->db->fieldExists('created_by', 'doctor_specializations')) {
            $fields['created_by'] = [
                'type'     => 'INT',
                'unsigned' => true,
                'null'     => true,
                'after'    => 'updated_at',
            ];
        }

        if (! $this->db->fieldExists('updated_by', 'doctor_specializations')) {
            $fields['updated_by'] = [
                'type'     => 'INT',
                'unsigned' => true,
                'null'     => true,
                'after'    => 'created_by',
            ];
        }

        if ($fields !== []) {
            $this->forge->addColumn('doctor_specializations', $fields);
        }

        $now = date('Y-m-d H:i:s');

        $this->db->table('doctor_specializations')->set([
            'status'     => 1,
            'created_at' => $now,
            'updated_at' => $now,
        ])->update();
    }

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

        foreach (['updated_by', 'created_by', 'updated_at', 'created_at', 'status'] as $field) {
            if ($this->db->fieldExists($field, 'doctor_specializations')) {
                $this->forge->dropColumn('doctor_specializations', $field);
            }
        }
    }
}