<?php

if (!defined('IN_WACKO'))
{
	exit;
}

##########################################################
##	Appearance settings									##
##########################################################

$module['config_appearance'] = [
		'order'	=> 201,
		'cat'	=> 'preferences',
		'status'=> !RECOVERY_MODE,
	];

##########################################################

function admin_config_appearance($engine, $module)
{
?>
	<h1><?php echo $engine->_t($module)['title']; ?></h1>
	<br>
	<p>
		<?php echo $engine->_t('AppearanceSettingsInfo');?>
	</p>
	<br>
	<?php
	$action = $_POST['_action'] ?? null;

	// functions
	$valid_color = function ($color)
	{
		if (preg_match('/^(
			(\#([a-fA-F\d]{3}|[a-fA-F\d]{6}))|        # color value
				(rgb\((\d{1,3}%?,){2}\d{1,3}%?\))        # rgb triplet
			)$/x', $color))
		{
			return $color;
		}
	};

	$remove_file = function ($file) use ($engine)
	{
		if (!in_array($file, ['favicon', 'logo']))
		{
			return;
		}

		$yeah['favicon']	= $engine->db->site_favicon;
		$yeah['logo']		= $engine->db->site_logo;

		$file_name = Ut::join_path(IMAGE_DIR, $yeah[$file]);

		clearstatcache();

		if (unlink($file_name))
		{
			$engine->set_message($engine->_t('FileRemovedFromFS'), 'success');

			$config['site_' . $file]		= '';

			if ($file == 'logo')
			{
				$config['logo_display']		= 0;
				$config['logo_height']		= '';
				$config['logo_width']		= '';
			}

			$engine->db->_set($config);
		}
		else
		{
			$permissions = substr(sprintf('%o', fileperms($file_name)), -4);
			$engine->set_message('File permissions <code>' . $file_name . '</code> ' . $permissions, 'error');

			$engine->set_message($engine->_t('FileRemovedFromFSError'), 'error');
		}
	};

	$upload_file = function ($file) use ($engine, $remove_file)
	{
		if (!in_array($file, ['favicon', 'logo']))
		{
			return;
		}

		$error		= '';
		$orig_name	= basename($_FILES[$file]['name']);
		$tmp_name	= $_FILES[$file]['tmp_name'];

		// 1. check out $data
		$_data	= explode('.', $orig_name);
		$ext	= $_data[count($_data) - 1];
		unset($_data[count($_data) - 1]);

		// 3. extensions
		$ext					= strtolower($ext);

		$image['favicon']		= ['gif', 'ico' , 'jpeg', 'jpe', 'jpg', 'png', 'svg'];
		$image['logo']			= $engine::EXT['bitmap'];
		// calculate reasonable filesize: Pixels * Bit Depth
		// - GIF/PNG palette-based images (up to 8-bit)
		// - Non-palette images (JPEG/PNG/TIFF/SVG) are 0, 8, or 16.
		$max_size['favicon']	= 64 * 64 * 8;
		$max_size['logo']		= 1024 * 1024 * 2;

		if (in_array($ext, $image[$file]))
		{
			if (is_writable(IMAGE_DIR . '/'))
			{
				if ($_FILES[$file]['size'] > ($max_size[$file]))
				{
					$error = $engine->_t('UploadMaxSizeReached');
				}

				$size			= [0, 0];
				$size			= @getimagesize($tmp_name);

				if ($file == 'logo')
				{
					$config['logo_height']			= (int) $size[1];
					$config['logo_width']			= (int) $size[0];
				}
				else if ($file == 'favicon'
					&& ($size[0] > 64 || $size[1] > 64))
				{
					$error = $engine->_t('SiteFaviconTooBig') . ' <code>' . (int) $size[0] . ' × ' . (int) $size[1] . $engine->_t('UnitPixel') . '</code>';
				}

				if (!$error)
				{
					// remove old image from FS, extension of new file may differ
					$yeah['favicon']	= $engine->db->site_favicon;
					$yeah['logo']		= $engine->db->site_logo;

					if ($yeah[$file])
					{
						$remove_file($file);
					}

					$result_name	= $file . '.' . $ext;

					if ($file == 'logo')
					{
						$size			= [0, 0];
						$size			= @getimagesize($tmp_name);

						$config['logo_height']			= (int) $size[1];
						$config['logo_width']			= (int) $size[0];
					}

					move_uploaded_file($tmp_name, Ut::join_path(IMAGE_DIR, $result_name));
					chmod(Ut::join_path(IMAGE_DIR, $result_name), CHMOD_FILE);

					$config['site_' . $file]		= $result_name;

					$engine->db->_set($config);

					$engine->set_message($engine->_t('UploadDone'), 'success');
				}
				else
				{
					$engine->set_message($error, 'error');
				}
			}
			else
			{
				$engine->set_message(Ut::perc_replace($engine->_t('DirNotWritable'), '<code>' . IMAGE_DIR . '/' . '</code>'), 'error');
			}
		}
		else
		{
			$engine->set_message($engine->_t('UploadNotAPicture'), 'error');
		}
	};

	// remove logo
	if (isset($_POST['remove_logo']))
	{
		$remove_file('logo');

		$engine->http->redirect($engine->href());
	}

	// remove favicon
	if (isset($_POST['remove_favicon']))
	{
		$remove_file('favicon');

		$engine->http->redirect($engine->href());
	}

	// update settings
	if ($action == 'appearance')
	{
		if (isset($_FILES['logo']['tmp_name']) && is_uploaded_file($_FILES['logo']['tmp_name']))
		{
			$upload_file('logo');
		}
		else
		{
			$config['logo_height']			= (int) ($_POST['logo_height']	?? null);
			$config['logo_width']			= (int) ($_POST['logo_width']	?? null);
		}

		if (isset($_FILES['favicon']['tmp_name']) && is_uploaded_file($_FILES['favicon']['tmp_name']))
		{
			$upload_file('favicon');
		}

		$config['logo_display']				= (int) ($_POST['logo_display'] ?? null);
		$config['theme_color']				= (string) $valid_color(($_POST['theme_color'] ?? null));
		$config['theme']					= (string) $engine->validate_theme(($_POST['theme'] ?? null));

		if (isset($_POST['allow_themes']) && is_array($_POST['allow_themes']))
		{
			$allow_themes = array_map(
				function($theme) use ($engine) {
					return $engine->validate_theme($theme);
				},
				$_POST['allow_themes']
			);
			$allow_themes = array_unique($allow_themes);

			$config['allow_themes'] = (string) implode(',', $allow_themes);
		}
		else
		{
			$config['allow_themes'] = '0';
		}

		$config['allow_themes_per_page']	= (int) ($_POST['themes_per_page'] ?? null);

		$engine->db->_set($config);

		$engine->log(1, $engine->_t('AppearanceSettingsUpdated', SYSTEM_LANG));
		$engine->set_message($engine->_t('AppearanceSettingsUpdated'), 'success');
		$engine->http->redirect($engine->href());
	}

	echo $engine->form_open('appearance', ['form_more' => ' enctype="multipart/form-data" ']);

	?>
	<table class="setting formation">
		<colgroup>
			<col span="1">
			<col span="1">
		</colgroup>
		<tr>
			<th colspan="2">
				<br>
				<?php echo $engine->_t('LogoSection');?>
			</th>
		</tr>
		<tr class="hl-setting">
			<td class="label">
				<label for="logo"><strong><?php echo $engine->_t('SiteLogo');?></strong><br>
				<small><?php echo $engine->_t('SiteLogoInfo');?></small></label>
			</td>
			<td>
			<?php if (file_exists(Ut::join_path(IMAGE_DIR, $engine->db->site_logo)) && $engine->db->site_logo)
			{?>
				<img src="<?php echo Ut::join_path(IMAGE_DIR, $engine->db->site_logo); ?>" alt="" height="<?php echo $engine->db->logo_height; ?>" width="<?php echo $engine->db->logo_width; ?>"><br>
				<button type="submit" id="remove_logo" name="remove_logo"><?php echo $engine->_t('Remove'); ?></button>
			<?php }
				// SVG format is intentionally excluded ?>
				<input type="file" name="logo" id="logo_upload" accept=".avif, .gif, .jpg, .jxl, .png, .webp, image/avif, image/gif, image/jpeg, image/jxl, image/png, image/svg+xml, image/webp">
			</td>
		</tr>
		<?php
		if ($engine->db->site_logo)
		{
		?>
		<tr class="lined">
			<td colspan="2"></td>
		</tr>
		<tr class="hl-setting">
			<td class="label">
				<label for="logo_width"><strong><?php echo $engine->_t('LogoDimensions');?></strong><br>
				<small><?php echo $engine->_t('LogoDimensionsInfo');?></small></label>
			</td>
			<td>
			<?php	// TODO: add option to reset dimensions to default image size
					// + option to 'readonly / disable' input fields
			?>
				<input type="number" min="16" maxlength="3" style="width: 50px;" id="logo_width" name="logo_width" value="<?php echo (int) $engine->db->logo_width;?>"> × <input type="number" min="16" maxlength="3" style="width:50px;" id="logo_height" name="logo_height" value="<?php echo (int) $engine->db->logo_height; ?>"> <?php echo $engine->_t('UnitPixel'); ?>
			</td>
		</tr>
		<?php } ?>
		<tr class="lined">
			<td colspan="2"></td>
		</tr>
		<tr class="hl-setting">
			<td class="label">
				<label for="logo_display"><strong><?php echo $engine->_t('LogoDisplayMode');?></strong><br>
				<small><?php echo $engine->_t('LogoDisplayModeInfo');?></small></label>
			</td>
			<td>
				<select id="logo_display" name="logo_display" style="width: 200px;">
					<option value="0" <?php echo ($engine->db->logo_display  == 0  ? ' selected' : ''); ?>><?php echo $engine->_t('LogoOff');?></option>
					<option value="1" <?php echo ($engine->db->logo_display  == 1  ? ' selected' : ''); ?>><?php echo $engine->_t('LogoOnly');?></option>
					<option value="2" <?php echo ($engine->db->logo_display  == 2  ? ' selected' : ''); ?>><?php echo $engine->_t('LogoAndTitle');?></option>
				</select>
			</td>
		</tr>
		<tr>
			<th colspan="2">
				<br>
				<?php echo $engine->_t('FaviconSection');?>
			</th>
		</tr>
		<tr class="hl-setting">
			<td class="label">
				<label for="logo"><strong><?php echo $engine->_t('SiteFavicon');?></strong><br>
				<small><?php echo $engine->_t('SiteFaviconInfo');?></small></label>
			</td>
			<td>
			<?php if (file_exists(Ut::join_path(IMAGE_DIR, $engine->db->site_favicon)) && $engine->db->site_favicon)
			{?>
				<img src="<?php echo Ut::join_path(IMAGE_DIR, $engine->db->site_favicon); ?>" alt="Site Favicon" class="favicon"><br>
				<button type="submit" id="remove_favicon" name="remove_favicon"><?php echo $engine->_t('Remove'); ?></button>
			<?php }?>
				<input type="file" name="favicon" id="favicon_upload" accept=".gif, .ico, .jpg, .png, .svg, .webp, image/gif, image/x-icon, image/jpeg, image/png, image/svg+xml, image/webp">
			</td>
		</tr>
		<tr class="lined">
			<td colspan="2"></td>
		</tr>
		<tr class="hl-setting">
			<td class="label">
				<label for="theme_color"><strong><?php echo $engine->_t('ThemeColor');?></strong><br>
				<small><?php echo $engine->_t('ThemeColorInfo');?></small></label>
			</td>
			<td>
				<input type="color" id="theme_color" name="theme_color" value="<?php echo Ut::html($engine->db->theme_color);?>">
			</td>
		</tr>
		<tr>
			<th colspan="2">
				<br>
				<?php echo $engine->_t('LayoutSection');?>
			</th>
		</tr>
		<tr class="hl-setting">
			<td class="label">
				<label for="theme"><strong><?php echo $engine->_t('Theme');?></strong><br>
				<small><?php echo $engine->_t('ThemeInfo');?></small></label>
			</td>
			<td>
				<select id="theme" name="theme">
				<?php
					$themes = $engine->available_themes();

					foreach ($themes as $theme)
					{
						echo '<option value="' . $theme . '" ' . ($engine->db->theme == $theme ? 'selected' : '') . '>' . $theme . '</option>';
					}
				?>
				</select>
			</td>
		</tr>
		<tr class="lined">
			<td colspan="2"></td>
		</tr>
		<tr class="hl-setting">
			<td class="label">
				<label for=""><strong><?php echo $engine->_t('ThemesAllowed');?></strong><br>
				<small><?php echo $engine->_t('ThemesAllowedInfo');?></small></label>
			</td>
			<td>
			<?php
				if (isset($engine->db->allow_themes))
				{
					$theme_list = explode(',', $engine->db->allow_themes);
				}
				else
				{
					$theme_list= [];
				}

				$themes = $engine->available_themes();

				echo "<table>\n\t<tr>\n";

				foreach ($themes as $n => $theme)
				{
					echo	"\t\t<td>\n\t\t\t" . '<input type="checkbox" name="allow_themes[' . $n . ']" id="theme_' . $n . '" value="' . $theme . '" ' . (in_array($theme, $theme_list) ? ' checked' : ''). '>' . "\n\t\t\t" .
							'<label for="theme_' . $n . '">' . $theme . '</label>' . "\n\t\t</td>\n";

					// modulus operator: every third loop add a break
					if ($n % 3 == 0)
					{
						echo "\t</tr>\n\t<tr>\n";
					}
				}

				echo "\t</tr>\n</table>";
				?>
			</td>
		</tr>
		<tr class="lined">
			<td colspan="2"></td>
		</tr>
		<tr class="hl-setting">
			<td class="label">
				<strong><?php echo $engine->_t('ThemesPerPage');?></strong><br>
				<small><?php echo $engine->_t('ThemesPerPageInfo');?></small>
			</td>
			<td>
				<input type="radio" id="themes_per_page_on" name="themes_per_page" value="1"<?php echo ($engine->db->allow_themes_per_page == 1 ? ' checked' : '');?>>
				<label for="themes_per_page_on"><?php echo $engine->_t('On');?></label>
				<input type="radio" id="themes_per_page_off" name="themes_per_page" value="0"<?php echo ($engine->db->allow_themes_per_page == 0 ? ' checked' : '');?>>
				<label for="themes_per_page_off"><?php echo $engine->_t('Off');?></label>
			</td>
		</tr>
	</table>
	<br>
	<div class="center">
		<button type="submit" id="submit"><?php echo $engine->_t('SaveButton');?></button>
		<button type="reset" id="button"><?php echo $engine->_t('ResetButton');?></button>
	</div>
<?php
	echo $engine->form_close();
}

