<?php
//======================================================================================
//
// Function: Call api's and refresh Token if needed
//
// Programmer: AR
// Date      : 2025-03-11
//
// Copyright Reeft A/S (c) - 2025
//======================================================================================

//======================================================================================	
// Set session
//======================================================================================			
if(!isset($_SESSION))
{ 
	session_start();
}

function makeApiCall($url, $headers = [], $data = null, $apiType = 'GET') {
	
    // Initialize cURL session
    $ch = curl_init($url);

    // Set default headers including the token from session
    $defaultHeaders = [
        "Authorization: Bearer " . $_SESSION['token'], // Use the current token from session
        //"Content-Type: application/json"
    ];

    // Merge custom headers with default ones
    $headers = array_merge($defaultHeaders, $headers);

    // Set cURL options
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    if ($apiType == 'POST') {
		curl_setopt($ch, CURLOPT_POST, true);
		curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
	} else if ($apiType == 'PUT') {
		curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");
		curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
	} else {
		curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
	}

    // Execute the request
    $result = curl_exec($ch);
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

    // Check for cURL error
    if (curl_errno($ch)) {
        $error_msg = "cURL error: " . curl_error($ch);
        curl_close($ch);
        return ['error' => $error_msg];
    }
	
    // Close cURL resource
    curl_close($ch);

    // Handle response based on HTTP status code
    if ($httpCode == 401) { // Unauthorized, refresh the token and retry
        $result = refreshTokenAndRetry($url, $headers, $data, $apiType); // Retry with the new token
	} else if ($httpCode == 200 || $httpCode == 201 || $httpCode == 204) { 
		if (is_string($result) && !is_array(json_decode($result, true))) {
			$data = trim($result, '"'); // Remove any enclosing quotes
		} else {
			$data = json_decode($result, true);
		}
		return ['data' => $data];  // success
    } else { // Handle other HTTP codes
        return ['error' => "HTTP Response: " . $httpCode];
    }

    return $result;
}



function refreshTokenAndRetry($url, $headers = [], $data = null, $apiType = 'GET') {
	
	global $rftUrl, $_SESSION;
	$apiUrl = $rftUrl . '/Authentication/RefreshToken/Gps'; 
	
	$refreshToken = $_SESSION['refreshToken'];

	// cURL setup
	$ch = curl_init($apiUrl);
	$refreshHeaders = [
		'Content-Type: application/json',
		'Accept: application/json',
	];
	
	// Remove old token and merge headers
	unset($headers[0]);
	unset($headers[1]);
    $headers = array_merge($refreshHeaders, $headers);	
	
	$data = [
		'refreshToken' => $refreshToken
	];
	
	$dataJson = json_encode($data);

	// cURL options
	curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
	curl_setopt($ch, CURLOPT_POST, true); // Explicitly set the method to POST
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $dataJson);

	// Execute cURL request
	$response = curl_exec($ch);  
	$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
	if (curl_errno($ch)) {
		$curlError = curl_error($ch);
	} else {
		$curlError = false;
	}
	
	// Close cURL resource
	curl_close($ch);
	
	$hasError = 'N';
	$errorMessage =  '';

	if ($curlError) {
		$errorMessage = 'error: cURL error calling Authentication/refreshToken/Gps - ' . $curlError .' refreshToken: '. $refreshToken;
		$hasError = 'Y';
	}
	
	if ($httpCode != 200 && $httpCode != 201 && $httpCode != 204){
		$errorMessage = 'error: httpCode recieved calling Authentication/refreshToken/Gps - ' . $httpCode.' Token: '. $refreshToken;
		$hasError = 'Y';
	} 
	
	if ($hasError == 'N') {
		$data = json_decode($response, true);
		$_SESSION['token'] 						= $data["token"];
		$_SESSION['token'] 						= $data["token"];
		$_SESSION['refreshToken']				= $data["refreshToken"];
		
		// Now retry the original API call with the new token
        return makeApiCall($url, $headers, $data, $apiType);
	} else {
		return ['error' => "Failed to refresh token: " . $errorMessage];
	}
}

function fetchPaginatedData($url, $headers = [], $data = null, $apiType = 'GET') {
    $allRecords = []; // To store merged data
    $pageNumber = 1; // Start from the first page
    $totalPages = 1; // Default value

    do {
        // Build the URL for the current page
		if ($apiType == 'POST') {
			$paginatedUrl = $url;
			$data["pageNumber"] = $pageNumber;
		} else {
			$paginatedUrl = $url . "&PageNumber=" . $pageNumber;
		}

        // Call the API using makeApiCall
        $response = makeApiCall($paginatedUrl, $headers, $data, $apiType);

        // Check for errors in the response
        if (isset($response['error'])) {
            return ['error' => $response['error']]; // Return the error response
        }

        // Extract the data
        $responseData = $response['data'];

        // Check if 'list' exists and merge it
        if (isset($responseData['list']) && is_array($responseData['list'])) {
            $allRecords = array_merge($allRecords, $responseData['list']);
        }

        // If 'pager' exists, update the total page count
        if (isset($responseData['pager']['pageCount'])) {
            $totalPages = $responseData['pager']['pageCount'];
        } else {
            // No pager means no pagination, break after the first call
            break;
        }

        $pageNumber++; // Move to the next page

    } while ($pageNumber <= $totalPages);

    // Return the merged data
    return ['data' => $allRecords];
}



?>