clqms-be/app/Controllers/Contact.php

<?php
namespace App\Controllers;

use CodeIgniter\API\ResponseTrait;
use CodeIgniter\Controller;

use App\Models\ContactModel;
use App\Models\ContactDetailModel;

class Contact extends Controller {
    use ResponseTrait;

    protected $db;
    protected $contactRule;

    public function __construct() {
        $this->db = \Config\Database::connect();
        $this->contactRule = [ 'NameFirst' => 'required' ];
    }

    public function index() {
        $model = new ContactModel();
        $rows = $model->getContacts();
        
        if (empty($rows)) {
            return $this->respond([
                'status'  => 'success',
                'message' => "no Data.",
                'data'    => $rows,
            ], 200);
        }

        return $this->respond([
            'status' => 'success',
            'message'=> "fetch success",
            'data'   => $rows,
        ], 200);
    }

    public function show($ContactID = null) {
        $model = new ContactModel();
        $rows = $model->getContactWithDetail($ContactID);

        if (empty($rows)) {
            return $this->respond([
                'status'  => 'success',
                'message' => "Data not found.",
                'data'    => [],
            ], 200);
        }

        return $this->respond([
            'status' => 'success', 
            'message'=> "Data fetched successfully",
            'data'   => $rows,
        ], 200);
    }

    public function delete() {
        try {
            $input = $this->request->getJSON(true);
            $ContactID = $input["ContactID"];
            if (!$ContactID) {
                return $this->failValidationErrors('ContactID is required.');
            }

            $contact = $this->db->table('contact')->where('ContactID', $ContactID)->get()->getRow();
            if (!$contact) {
                return $this->failNotFound("data with {$ContactID} not found.");
            }

            $this->db->table('contact')->where('ContactID', $ContactID)->update(['EndDate' => NOW()]);

            return $this->respondDeleted([
                'status' => 'success',
                'message' => "Contact with {$ContactID} deleted successfully."
            ]);
 
        } catch (\Throwable $e) {
            // Ensure rollback if something goes wrong
            if ($this->db->transStatus() !== false) {
                $this->db->transRollback();
            }
            return $this->failServerError('Something went wrong: ' . $e->getMessage());
        }
    }

    public function save() {
        $input = $this->request->getJSON(true);
        $contactModel = new ContactModel();
        $detailModel  = new ContactDetailModel();
        $db   = \Config\Database::connect();

        $db->transStart();

        try {
            if (!empty($input['ContactID'])) {
                $ContactID = $input['ContactID'];
                if (!$contactModel->update($ContactID, $input)) { throw new \RuntimeException('Failed to update contact'); }
            } else {
                $ContactID = $contactModel->insert($input, true);
                if (!$ContactID) { throw new \RuntimeException('Failed to insert contact'); }
            }

            if(isset($input['Details'])) {
                $result = $detailModel->syncDetails($ContactID, $input['Details']);
                if ($result['status'] !== 'success') {
                    throw new \RuntimeException('Failed to sync details: ' . $result['message']);
                }
            }

            $db->transComplete();

            if ($db->transStatus() === false) {
                throw new \RuntimeException('Transaction failed');
            }

            return $this->respondCreated([
                'status'    => 'success',
                'ContactID' => $ContactID,
            ]);
        } catch (\Throwable $e) {
            $db->transRollback();
            log_message('error', 'saveContact error: ' . $e->getMessage());
            return $this->fail([
                'status'  => 'error',
                'message' => $e->getMessage(),
            ], 500);
        }
    }
}