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minimalistic-wallpaper-collection
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Display image contents instead of redirecting if small enough (#78)

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Jonah Lawrence 2022-10-08 20:41:06 -06:00 committed by GitHub
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2 changed files with 55 additions and 7 deletions
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4
README.md
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@ -34,6 +34,10 @@ https://minimalistic-wallpaper.demolab.com/?random=3
This API can be used for setting daily wallpapers on a mobile device by combining it with an app such as IFTTT. This API can be used for setting daily wallpapers on a mobile device by combining it with an app such as IFTTT.
> **Note**
> By default, the API will fetch the image from GitHub and return it as content if it is smaller than 4.5MB.
> To force the API to redirect to the image on GitHub instead, add `&redirect=1` to the end of the URL.
## Contributing ## Contributing
All images appearing in the images directory contain the author (sometimes this is the original artist, for others, this is a Reddit user who shared the image or a website the image was found on in cases where the original artist is unknown) and the title or description of the wallpaper. All images appearing in the images directory contain the author (sometimes this is the original artist, for others, this is a Reddit user who shared the image or a website the image was found on in cases where the original artist is unknown) and the title or description of the wallpaper.

58
api/index.php
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@ -1,5 +1,12 @@
<?php <?php
/**
* Fetch the contents of a URL with cURL
*
* @param string $url The URL to fetch
* @param string $userAgent The user agent to use
* @return string The contents of the URL
*/
function curlGetContents($url, $userAgent) function curlGetContents($url, $userAgent)
{ {
$ch = curl_init(); $ch = curl_init();
@ -16,6 +23,39 @@ function curlGetContents($url, $userAgent)
return $response; return $response;
} }
/**
* Fetch an image, if it is larger than 4.5MB, redirect to it
* otherwise, return the image as content
*
* @param string $url The URL to fetch
* @param string $userAgent The user agent to use
* @param bool $redirect Whether to force a redirect
*/
function displayImage($url, $userAgent, $redirect)
{
// don't need to fetch the image if we're redirecting
$contents = $redirect ? "" : curlGetContents($url, $userAgent);
// redirect if redirect is set or the image is larger than 4.5MB
if ($redirect || strlen($contents) > 4500000) {
header("Location: $url");
exit;
}
// set content type
if (preg_match("/\.(jpg|jpeg)$/", $url)) {
header('Content-Type: image/jpeg');
} elseif (preg_match("/\.(png)$/", $url)) {
header('Content-Type: image/png');
} elseif (preg_match("/\.(gif)$/", $url)) {
header('Content-Type: image/gif');
}
// set default filename
header('Content-Disposition: inline; filename="' . basename($url) . '"');
// output the image
exit($contents);
}
$REPO = "DenverCoder1/minimalistic-wallpaper-collection"; $REPO = "DenverCoder1/minimalistic-wallpaper-collection";
$BRANCH_NAME = "main"; $BRANCH_NAME = "main";
@ -30,19 +70,23 @@ $IMGPROXY_PREFIX = "https://dc1imgproxy.fly.dev/x/rs:auto:332:200:1/plain/" . ur
// API url to get a listing of images in the directory on GitHub // API url to get a listing of images in the directory on GitHub
$GITHUB_API_URL = "https://api.github.com/repos/$REPO/contents/$IMAGES_DIRECTORY/"; $GITHUB_API_URL = "https://api.github.com/repos/$REPO/contents/$IMAGES_DIRECTORY/";
// whether to force a redirect to the image instead of displaying it directly
$redirect = isset($_GET['redirect']) ? $_GET['redirect'] === "1" : false;
// if the current URL is in the form "/images/...", show the image
if (preg_match("/\/images\/(.*)$/", $_SERVER['REQUEST_URI'], $matches)) {
$image_path = $BASE_URL . $matches[1];
displayImage($image_path, $REPO, $redirect);
}
// fetch the list of images from GitHub
$images = json_decode(curlGetContents($GITHUB_API_URL, $REPO)); $images = json_decode(curlGetContents($GITHUB_API_URL, $REPO));
// if the random query string parameter is set, pick a random image // if the random query string parameter is set, pick a random image
if (isset($_GET['random'])) { if (isset($_GET['random'])) {
// get the image url // get the image url
$random_image_path = $images[array_rand($images)]->download_url; $random_image_path = $images[array_rand($images)]->download_url;
header("Location: $random_image_path"); displayImage($random_image_path, $REPO, $redirect);
}
// if the current URL is in the form "/images/...", show the image
if (preg_match("/\/images\/(.*)$/", $_SERVER['REQUEST_URI'], $matches)) {
$image_path = $BASE_URL . $matches[1];
header("Location: $image_path");
} }
?> ?>
<!DOCTYPE html> <!DOCTYPE html>