<?php

// load csv
$csv = fopen($argv[1], 'r');
$dsn = $argv[2];
$user = $argv[3];
$pass = $argv[4];
$output_file = $argv[5];

$output_fh = fopen($output_file, "w");

// connect to db
$db = new PDO($dsn, $user, $pass);

// prepared statement
$sth = $db->prepare('insert into warranty_serial (id, sku, date_create, source, meta_info) values (:serial, :sku, :date_create, :source, :meta_info)');

// go through rows
$source = 'motiv';
while (($row = fgetcsv($csv)) !== false)
{
    // TODO: verify if these are still the headers if there are headers
    // possible lines in output file:
    // (1) header in csv file
    // SerialNumber,Sku,DispatchStatus,CreatedDate,InventoryStatus,CategoryID,CategoryName
    // (2) No available data
    // (3) CH2000012071,WCHD23BL-CPN00-LX,0,2020-08-11 04:05:27.090,0,4,CHAMPION MF
    // (4) Empty line

    // check if csv file has a header by checking contents of line
    if (($row[0] == 'SerialNumber') || ($row[1] == 'Sku') ||
        ($row[2] == 'DispatchStatus') || ($row[3] == 'CreatedDate') ||
        ($row[4] == 'InventoryStatus') || ($row[5] == 'CategoryID') ||
        ($row[6] == 'CategoryName'))
    {
        // skip the header
        error_log('Skipping the headers... ');
        continue;
    }

    // check if No available data
    if ($row[0] == 'No available data')
    {
        // skip the line
        error_log('No available data, skipping the line...');
        continue;
    }

    // check if new line
    if (empty($row[0]))
    {
        // skip
        error_log('Skipping empty line...');
        continue;
    }
 
    // sample of line in output file:
    // serial number, sku, dispatch status, created date, inventory status, category id, category name
    // CH2000012071,WCHD23BL-CPN00-LX,0,2020-08-11 04:05:27.090,0,4,CHAMPION MF
    $serial = trim(strtoupper($row[0]));
    $sku = trim(strtoupper($row[1]));
    $dispatch_status = trim($row[2]);
    $date_create = $row[3];
    $inventory_status = trim($row[4]);
    $cat_id = trim($row[5]);
    $cat_name = trim(strtoupper($row[6]));

    $meta_info = [
        'dispatch_status' => $dispatch_status,
        'inventory_status' => $inventory_status,
        'category_id' => $cat_id,
        'category_name' => $cat_name,
    ];

    $info = json_encode($meta_info);

    error_log('Processing ' . $serial . ' and ' . $sku);

    if ($sku == 'N/A')
        $sku = null;

    $res = $sth->execute([
        ':serial' => $serial,
        ':sku' => $sku,
        ':date_create' => $date_create,
        ':source' => $source,
        ':meta_info' => $info,
    ]);

    if (!$res)
    {
        // log the error
        $err = $sth->errorInfo();
        $err_message =  "$serial - ERROR - " . $err[2] . "\n";
        fwrite($output_fh, $err_message);
    }
    else
    {
        // log successful adding of serial
        $message = "$serial - SUCCESS - " . "\n";
        fwrite($output_fh, $message);
    }
}

// close file
fclose($csv);
fclose($output_fh);