<?php

namespace App\Database\Migrations;

use CodeIgniter\Database\Migration;

class CreateEnrollmentExceptions extends Migration
{
    public function up()
    {
        if ($this->db->tableExists('enrollment_exceptions')) {
            return;
        }

        $this->forge->addField([
            'id' => ['type' => 'INT', 'constraint' => 11, 'unsigned' => true, 'auto_increment' => true],
            'parent_id' => ['type' => 'INT', 'constraint' => 11, 'unsigned' => true],
            'student_id' => ['type' => 'INT', 'constraint' => 11, 'unsigned' => true],
            'school_year' => ['type' => 'VARCHAR', 'constraint' => 20],
            'source_school_year' => ['type' => 'VARCHAR', 'constraint' => 20, 'null' => true],
            'status' => ['type' => 'VARCHAR', 'constraint' => 20, 'default' => 'active'],
            'reason_code' => ['type' => 'VARCHAR', 'constraint' => 80],
            'reason_note' => ['type' => 'TEXT'],
            'bypassed_rule_codes_json' => ['type' => 'TEXT', 'null' => true],
            'created_by' => ['type' => 'INT', 'constraint' => 11, 'unsigned' => true, 'null' => true],
            'approved_by' => ['type' => 'INT', 'constraint' => 11, 'unsigned' => true, 'null' => true],
            'starts_at' => ['type' => 'DATETIME', 'null' => true],
            'expires_at' => ['type' => 'DATETIME', 'null' => true],
            'used_at' => ['type' => 'DATETIME', 'null' => true],
            'enrollment_id' => ['type' => 'INT', 'constraint' => 11, 'unsigned' => true, 'null' => true],
            'revoked_at' => ['type' => 'DATETIME', 'null' => true],
            'revoked_by' => ['type' => 'INT', 'constraint' => 11, 'unsigned' => true, 'null' => true],
            'revocation_reason' => ['type' => 'TEXT', 'null' => true],
            'created_at' => ['type' => 'DATETIME', 'null' => true],
            'updated_at' => ['type' => 'DATETIME', 'null' => true],
        ]);
        $this->forge->addKey('id', true);
        $this->forge->addKey(['parent_id', 'student_id', 'school_year', 'status'], false, false, 'idx_enrollment_exceptions_scope_status');
        $this->forge->addKey(['student_id', 'school_year'], false, false, 'idx_enrollment_exceptions_student_year');
        $this->forge->addKey(['status', 'expires_at'], false, false, 'idx_enrollment_exceptions_status_expiry');
        $this->forge->createTable('enrollment_exceptions', true);
    }

    public function down()
    {
        $this->forge->dropTable('enrollment_exceptions', true);
    }
}