<?php

namespace App\Database\Migrations;

use CodeIgniter\Database\Migration;

/**
 * Fresh-install schema. Uses IF NOT EXISTS so existing databases keep working.
 */
class InitAppointmentSchema extends Migration
{
    public function up(): void
    {
        $this->forge->addField([
            'id'         => ['type' => 'INT', 'unsigned' => true, 'auto_increment' => true],
            'first_name' => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => true],
            'last_name'  => ['type' => 'VARCHAR', 'constraint' => 50, 'null' => true],
            'email'      => ['type' => 'VARCHAR', 'constraint' => 191],
            'password'   => ['type' => 'VARCHAR', 'constraint' => 255],
            'role'       => ['type' => 'VARCHAR', 'constraint' => 20],
            'status'     => ['type' => 'VARCHAR', 'constraint' => 20, 'null' => true],
        ]);
        $this->forge->addKey('id', true);
        $this->forge->addUniqueKey('email');
        $this->forge->createTable('users', true);

        $this->forge->addField([
            'id'              => ['type' => 'INT', 'unsigned' => true, 'auto_increment' => true],
            'user_id'         => ['type' => 'INT', 'unsigned' => true],
            'specialization'  => ['type' => 'VARCHAR', 'constraint' => 191, 'null' => true],
            'experience'      => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
            'fees'            => ['type' => 'DECIMAL', 'constraint' => '10,2', 'null' => true],
            'available_from'  => ['type' => 'TIME', 'null' => true],
            'available_to'    => ['type' => 'TIME', 'null' => true],
        ]);
        $this->forge->addKey('id', true);
        $this->forge->addKey('user_id');
        $this->forge->createTable('doctors', true);

        $this->forge->addField([
            'id'       => ['type' => 'INT', 'unsigned' => true, 'auto_increment' => true],
            'user_id'  => ['type' => 'INT', 'unsigned' => true],
            'age'      => ['type' => 'INT', 'null' => true],
            'gender'   => ['type' => 'VARCHAR', 'constraint' => 20, 'null' => true],
            'phone'    => ['type' => 'VARCHAR', 'constraint' => 30, 'null' => true],
        ]);
        $this->forge->addKey('id', true);
        $this->forge->addKey('user_id');
        $this->forge->createTable('patients', true);

        $this->forge->addField([
            'id'                 => ['type' => 'INT', 'unsigned' => true, 'auto_increment' => true],
            'patient_id'         => ['type' => 'INT', 'unsigned' => true],
            'doctor_id'          => ['type' => 'INT', 'unsigned' => true],
            'appointment_date'   => ['type' => 'DATE'],
            'appointment_time'   => ['type' => 'TIME'],
            'status'             => ['type' => 'ENUM', 'constraint' => ['pending', 'approved', 'rejected'], 'default' => 'pending'],
        ]);
        $this->forge->addKey('id', true);
        $this->forge->addKey(['doctor_id', 'appointment_date', 'appointment_time']);
        $this->forge->addKey('patient_id');
        $this->forge->createTable('appointments', true);
    }

    public function down(): void
    {
        $this->forge->dropTable('appointments', true);
        $this->forge->dropTable('patients', true);
        $this->forge->dropTable('doctors', true);
        $this->forge->dropTable('users', true);
    }
}