feat: print kms keys as cli tables

web/utils.php

@@ -0,0 +1,44 @@
+<?php
+
+function getLang(): string { // kms-server working language
+    // load from env
+    return 'zh-cn';
+}
+
+function stringLen(string $str): int { // string length (chinese -> 2)
+    return (strlen($str) + mb_strlen($str)) / 2; // chinese character occupy 3-bytes in utf-8
+}
+
+function stringGen(int $length, string $fillStr = ' '): string { // generate a string of specified length
+    return str_pad('', $length, $fillStr);
+}
+
+function loadGvlks(bool $isWinServer = false): array { // load kms client keys from assets
+    $assetPath = '../assets/gvlk/' . getLang() . '.json';
+    $gvlkData = json_decode(file_get_contents($assetPath), true);
+    return $isWinServer ? $gvlkData['win-server'] : $gvlkData['win'];
+}
+
+function showCliTable(string $title, array $content): void { // print cli table with two columns
+    $leftLen = 0;
+    $rightLen = 0;
+    foreach ($content as $col_1 => $col_2) { // found the longest length
+        $leftLen = ($leftLen < stringLen($col_1)) ? stringLen($col_1) : $leftLen;
+        $rightLen = ($rightLen < stringLen($col_2)) ? stringLen($col_2) : $rightLen;
+    }
+    $titleOffset = floor(($leftLen + $rightLen + 7 - stringLen($title)) / 2);
+
+    echo stringGen($titleOffset) . $title . PHP_EOL; // show table title
+    echo '┏' . stringGen($leftLen + $rightLen + 5, '-') . '┓' . PHP_EOL;
+    foreach ($content as $col_1 => $col_2) { // show table body
+        echo '| ' . $col_1 . stringGen($leftLen - stringLen($col_1)) . ' | ';
+        echo $col_2 . stringGen($rightLen - stringLen($col_2)) . ' |' . PHP_EOL;
+    }
+    echo '┗' . stringGen($leftLen + $rightLen + 5, '-') . '┛' . PHP_EOL;
+}
+
+echo PHP_EOL;
+foreach (loadGvlks(false) as $version => $content) {
+    showCliTable($version, $content);
+    echo PHP_EOL;
+}