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| 1 | <?php |
| 2 | |
| 3 | namespace Olz\Utils; |
| 4 | |
| 5 | use League\CommonMark\Environment\Environment; |
| 6 | use League\CommonMark\Extension\Attributes\AttributesExtension; |
| 7 | use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; |
| 8 | use League\CommonMark\Extension\GithubFlavoredMarkdownExtension; |
| 9 | use League\CommonMark\MarkdownConverter; |
| 10 | use Olz\Entity\Roles\Role; |
| 11 | use Olz\Roles\Components\OlzRoleInfoModal\OlzRoleInfoModal; |
| 12 | |
| 13 | class HtmlUtils { |
| 14 | use WithUtilsTrait; |
| 15 | |
| 16 | public string $prefix_regex = '<a ([^>]*)href=[\'"]mailto:'; |
| 17 | public string $subject_regex = '\?subject=([^\'"]*)'; |
| 18 | public string $suffix_regex = '[\'"]([^>]*)>([^<@]*)([^<]*)<\/a>'; |
| 19 | public string $olz_email_regex = ''; |
| 20 | public string $email_regex = '([A-Z0-9a-z._%+-]+)@([A-Za-z0-9.-]+\.[A-Za-z]{2,64})'; |
| 21 | |
| 22 | /** @param array<string, mixed> $override_config */ |
| 23 | public function renderMarkdown(string $markdown, array $override_config = []): string { |
| 24 | $default_config = [ |
| 25 | 'html_input' => 'escape', |
| 26 | 'allow_unsafe_links' => false, |
| 27 | 'max_nesting_level' => 100, |
| 28 | ]; |
| 29 | $config = array_merge($default_config, $override_config); |
| 30 | |
| 31 | $environment = new Environment($config); |
| 32 | $environment->addExtension(new CommonMarkCoreExtension()); |
| 33 | $environment->addExtension(new GithubFlavoredMarkdownExtension()); |
| 34 | $environment->addExtension(new AttributesExtension()); |
| 35 | $converter = new MarkdownConverter($environment); |
| 36 | $rendered = $converter->convert($markdown); |
| 37 | $postprocessed = $this->postprocess(strval($rendered)); |
| 38 | return "<div class='rendered-markdown'>{$postprocessed}</div>"; |
| 39 | } |
| 40 | |
| 41 | public function postprocess(string $html): string { |
| 42 | return $this->replaceEmailAdresses($html); |
| 43 | } |
| 44 | |
| 45 | public function replaceEmailAdresses(string $html): string { |
| 46 | $role_repo = $this->entityManager()->getRepository(Role::class); |
| 47 | $host = $this->envUtils()->getEmailForwardingHost(); |
| 48 | $esc_host = preg_quote($host); |
| 49 | $this->olz_email_regex = '([A-Z0-9a-z._%+-]+)@'.$esc_host; |
| 50 | |
| 51 | $html = str_replace(['<p>', '<p ', '</p>'], ['<div>', '<div ', '</div>'], $html); |
| 52 | |
| 53 | preg_match_all( |
| 54 | "/{$this->prefix_regex}{$this->olz_email_regex}{$this->subject_regex}{$this->suffix_regex}/", |
| 55 | $html, |
| 56 | $matches, |
| 57 | ); |
| 58 | for ($i = 0; $i < count($matches[0]); $i++) { |
| 59 | $username = $matches[2][$i]; |
| 60 | // TODO: Only active roles! |
| 61 | $role = $role_repo->findOneBy(['username' => $username]); |
| 62 | if ($role) { |
| 63 | $prefix = $this->getPrefix($matches[1][$i]); |
| 64 | $username = preg_quote($username); |
| 65 | $email = "{$username}@{$host}"; |
| 66 | $subject = $this->getSubject($matches[3][$i]); |
| 67 | $suffix = $this->getSuffix($matches[4][$i], $matches[5][$i], $matches[6][$i]); |
| 68 | $html = preg_replace( |
| 69 | "/{$prefix}{$email}{$subject}{$suffix}/", |
| 70 | $this->escapeDollar(OlzRoleInfoModal::render([ |
| 71 | 'role' => $role, |
| 72 | 'text' => $matches[5][$i] ?: null, |
| 73 | ])), |
| 74 | $html |
| 75 | ); |
| 76 | $this->generalUtils()->checkNotNull($html, "String replacement failed"); |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | preg_match_all( |
| 81 | "/{$this->prefix_regex}{$this->olz_email_regex}{$this->suffix_regex}/", |
| 82 | $html, |
| 83 | $matches, |
| 84 | ); |
| 85 | for ($i = 0; $i < count($matches[0]); $i++) { |
| 86 | $username = $matches[2][$i]; |
| 87 | // TODO: Only active roles! |
| 88 | $role = $role_repo->findOneBy(['username' => $username]); |
| 89 | if ($role) { |
| 90 | $prefix = $this->getPrefix($matches[1][$i]); |
| 91 | $username = preg_quote($username); |
| 92 | $email = "{$username}@{$host}"; |
| 93 | $suffix = $this->getSuffix($matches[3][$i], $matches[4][$i], $matches[5][$i]); |
| 94 | $html = preg_replace( |
| 95 | "/{$prefix}{$email}{$suffix}/", |
| 96 | $this->escapeDollar(OlzRoleInfoModal::render([ |
| 97 | 'role' => $role, |
| 98 | 'text' => $matches[4][$i] ?: null, |
| 99 | ])), |
| 100 | $html |
| 101 | ); |
| 102 | $this->generalUtils()->checkNotNull($html, "String replacement failed"); |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | preg_match_all( |
| 107 | "/(\\s|^){$this->olz_email_regex}([\\s,\\.!\\?]|$)/", |
| 108 | $html, |
| 109 | $matches, |
| 110 | ); |
| 111 | for ($i = 0; $i < count($matches[0]); $i++) { |
| 112 | $username = $matches[2][$i]; |
| 113 | // TODO: Only active roles! |
| 114 | $role = $role_repo->findOneBy(['username' => $username]); |
| 115 | if ($role) { |
| 116 | $username = preg_quote($username); |
| 117 | $email = "{$username}@{$host}"; |
| 118 | $html = preg_replace( |
| 119 | "/{$email}/", |
| 120 | $this->escapeDollar(OlzRoleInfoModal::render(['role' => $role])), |
| 121 | $html |
| 122 | ); |
| 123 | $this->generalUtils()->checkNotNull($html, "String replacement failed"); |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | $html = preg_replace( |
| 128 | "/{$this->prefix_regex}{$this->email_regex}{$this->subject_regex}{$this->suffix_regex}/", |
| 129 | "<script>olz.MailTo(\"\$2\", \"\$3\", \"\$6\" + \"\$7\", \"\$4\")</script>", |
| 130 | $html |
| 131 | ); |
| 132 | $this->generalUtils()->checkNotNull($html, "String replacement failed"); |
| 133 | $html = preg_replace( |
| 134 | "/{$this->prefix_regex}{$this->email_regex}{$this->suffix_regex}/", |
| 135 | "<script>olz.MailTo(\"\$2\", \"\$3\", \"\$5\" + \"\$6\")</script>", |
| 136 | $html |
| 137 | ); |
| 138 | $this->generalUtils()->checkNotNull($html, "String replacement failed"); |
| 139 | $html = preg_replace( |
| 140 | "/(\\s|^){$this->email_regex}([\\s,\\.!\\?]|$)/", |
| 141 | "\$1<script>olz.MailTo(\"\$2\", \"\$3\", \"E-Mail\")</script>\$4", |
| 142 | $html |
| 143 | ); |
| 144 | $this->generalUtils()->checkNotNull($html, "String replacement failed"); |
| 145 | return $html; |
| 146 | } |
| 147 | |
| 148 | /** @param array<string, string> $image_hrefs */ |
| 149 | public function getImageSrcHtml(array $image_hrefs): string { |
| 150 | $keys = array_keys($image_hrefs); |
| 151 | if (count($keys) < 1) { |
| 152 | return ''; |
| 153 | } |
| 154 | $default_src = $image_hrefs['1x'] ?? $image_hrefs[$keys[0]]; |
| 155 | if (count($keys) < 2) { |
| 156 | return <<<ZZZZZZZZZZ |
| 157 | src='{$default_src}' |
| 158 | ZZZZZZZZZZ; |
| 159 | } |
| 160 | $srcset = implode(",\n ", array_map(function ($key) use ($image_hrefs) { |
| 161 | $value = $image_hrefs[$key]; |
| 162 | return "{$value} {$key}"; |
| 163 | }, $keys)); |
| 164 | return <<<ZZZZZZZZZZ |
| 165 | srcset=' |
| 166 | {$srcset} |
| 167 | ' |
| 168 | src='{$default_src}' |
| 169 | ZZZZZZZZZZ; |
| 170 | } |
| 171 | |
| 172 | protected function getPrefix(string $match): string { |
| 173 | $esc_match = preg_quote($match); |
| 174 | return "<a {$esc_match}href=['\"]mailto:"; |
| 175 | } |
| 176 | |
| 177 | protected function getSubject(string $match): string { |
| 178 | $esc_match = preg_quote($match); |
| 179 | return "\\?subject={$esc_match}"; |
| 180 | } |
| 181 | |
| 182 | protected function getSuffix(string $match1, string $match2, string $match3): string { |
| 183 | $esc_match1 = preg_quote($match1); |
| 184 | $esc_match2 = preg_quote($match2); |
| 185 | $esc_match3 = preg_quote($match3); |
| 186 | return "['\"]{$esc_match1}>{$esc_match2}{$esc_match3}<\\/a>"; |
| 187 | } |
| 188 | |
| 189 | protected function escapeDollar(string $replacement): string { |
| 190 | return str_replace('$', '\$', $replacement); |
| 191 | } |
| 192 | |
| 193 | public static function fromEnv(): self { |
| 194 | return new self(); |
| 195 | } |
| 196 | } |