<?php
class Receive extends MY_Controller
{
    var $db_onedev;

    public function index()
    {
       echo "Dummy API Untuk Menerima Hasil Scan KTP QR1000";
    }
 
    public function __construct()
    {
       parent::__construct();
       $this->db_onedev = $this->load->database("onedev", true);
    }

    public function receive()
    {
        try {
            // Receive all payload from POST request json
            $data = json_decode(file_get_contents('php://input'), true);
            if (empty($data)) {
                $this->sys_error("Tidak ada data yang diterima");
                exit;
            }
            
            $this->db_onedev->trans_begin();
    
            $now = date('Y-m-d H:i:s');
            
            $sql = "INSERT INTO temp_ocrktp (dariQr1000, createdAt, updatedAt) 
                    VALUES (?, ?, ?)";
            
            $params = [
                json_encode($data), // Store complete payload as JSON in dariQr1000
                $now,              // createdAt
                $now               // updatedAt
            ];
    
            $query = $this->db_onedev->query($sql, $params);
            
            if (!$query) {
                throw new Exception("Database error: " . json_encode($this->db_onedev->error()));
            }
    
            if ($this->db_onedev->trans_status() === FALSE) {
                $this->db_onedev->trans_rollback();
                throw new Exception("Transaction failed");
            }
    
            $this->db_onedev->trans_commit();
            $this->sys_ok("Berhasil menerima data");
            
        } catch (Exception $e) {
            $this->db_onedev->trans_rollback();
            $this->sys_error($e->getMessage());
            exit;
        }
    }

    public function to_qwen() {
        try {
            // Validate input
            $prm = $this->sys_input;
            $fileDataBase64 = $prm['fileDataBase64'] ?? null;
            if (empty($fileDataBase64)) {
                throw new Exception("No image data received");
            }
            // Start database transaction
            $this->db_onedev->trans_begin();
    
            // Store base64 to temp_ocrktp.base64img
            $sql = "UPDATE temp_ocrktp 
                    SET base64img = ? 
                    WHERE id = (
                        SELECT id FROM (
                            SELECT MAX(id) as id 
                            FROM temp_ocrktp
                        ) as latest
                    )";
            $params = [
                $fileDataBase64
            ];
            $query = $this->db_onedev->query($sql, $params);
            if (!$query) {
                throw new Exception("Database error: " . json_encode($this->db_onedev->error()));
            }

            // Validate base64 format
            if (!preg_match('/^data:image\/(\w+);base64,/', $fileDataBase64)) {
                throw new Exception("Invalid image format");
            }
    
            // Clean base64 string
            $fileDataBase64 = preg_replace('/^data:image\/(\w+);base64,/', '', $fileDataBase64);
            $file = base64_decode($fileDataBase64);
            
            if ($file === false) {
                throw new Exception("Failed to decode base64 image");
            }

            // Store base64 to temp_ocrktp.base64img
            $sql = "UPDATE temp_ocrktp 
                    SET base64imgCleaned = ? 
                    WHERE id = (
                        SELECT id FROM (
                            SELECT MAX(id) as id 
                            FROM temp_ocrktp
                        ) as latest
                    )";
            $params = [
                $fileDataBase64
            ];
            $query = $this->db_onedev->query($sql, $params);
            if (!$query) {
                throw new Exception("Database error: " . json_encode($this->db_onedev->error()));
            }
    
            $uploadDir = "/home/one/project/one/one-media/scan-ktp/";
    
            // Generate filename and save image
            $date = date('YmdHis');
            $newFilename = "ktp-" . $date . ".jpg";
            $filePath = $uploadDir . $newFilename;
    
            if (file_put_contents($filePath, $file) === false) {
                throw new Exception("Failed to save image file");
            }
    
            // Perform OCR
            $this->load->library('Ocr_oroute');
            $this->ocr_oroute->modelName = "qwen/qwen-vl-plus";

            $image_path = $uploadDir . $newFilename;
            $result = $this->ocr_oroute->extract_ocr($image_path);

            $data = $result['data'] ?? null;
            
            if (empty($result)) {
                throw new Exception("OCR process failed or returned empty result");
            }
    
            $now = date('Y-m-d H:i:s');
    
            // Update the latest record with OCR results
            $sql = "UPDATE temp_ocrktp 
                    SET dariQwen = ?, 
                        updatedAt = ? 
                    WHERE id = (
                        SELECT id FROM (
                            SELECT MAX(id) as id 
                            FROM temp_ocrktp
                        ) as latest
                    )";
    
            $params = [
                json_encode($data), // Store OCR result as JSON
                $now
            ];
    
            $query = $this->db_onedev->query($sql, $params);
    
            if (!$query) {
                throw new Exception("Database error: " . json_encode($this->db_onedev->error()));
            }
    
            if ($this->db_onedev->affected_rows() === 0) {
                throw new Exception("No records found to update");
            }
    
            if ($this->db_onedev->trans_status() === FALSE) {
                throw new Exception("Transaction failed");
            }
    
            $this->db_onedev->trans_commit();
    
            // Return success response with OCR results
            
            $this->sys_ok($result);
    
        } catch (Exception $e) {
            // Rollback transaction if active
            if ($this->db_onedev->trans_status() !== NULL) {
                $this->db_onedev->trans_rollback();
            }
            
            // Delete uploaded file if it exists
            if (isset($filePath) && file_exists($filePath)) {
                unlink($filePath);
            }
    
            $this->sys_error($e->getMessage());
            exit;
        }
    }

}