106 lines
3.8 KiB
PHP
106 lines
3.8 KiB
PHP
<?php
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class TickModel {
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// Everything in this class just reads from and writes to the filesystem
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// It doesn't maintain state, so everything's just a static function
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public static function streamTicks(int $limit, int $offset = 0): Generator {
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$tick_files = glob(TICKS_DIR . '/*/*/*.txt');
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usort($tick_files, fn($a, $b) => strcmp($b, $a)); // sort filenames in reverse chronological order
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$count = 0;
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foreach ($tick_files as $file) {
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// read all the ticks from the current file and reverse the order
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// so the most recent ones are first
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//
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// each file is a single day, so we never hold more than
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// one day's ticks in memory
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$lines = array_reverse(
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file($file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES)
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);
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// split the path to the current file into the date components
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$pathParts = explode('/', str_replace('\\', '/', $file));
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// assign the different components to the appropriate part of the date
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$year = $pathParts[count($pathParts) - 3];
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$month = $pathParts[count($pathParts) - 2];
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$day = pathinfo($pathParts[count($pathParts) - 1], PATHINFO_FILENAME);
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foreach ($lines as $line) {
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// just keep skipping ticks until we get to the starting point
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if ($offset > 0) {
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$offset--;
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continue;
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}
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// Ticks are pipe-delimited: timestamp|text
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// But just in case a tick contains a pipe, only split on the first one that occurs
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list($time, $mood, $tick) = explode('|', $line, 3);
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// Build the timestamp from the date and time
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// Ticks are always stored in UTC
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$timestampUTC = "$year-$month-$day $time";
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yield [
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'timestamp' => $timestampUTC,
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'mood' => $mood,
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'tick' => $tick,
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];
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if (++$count >= $limit) {
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return;
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}
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}
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}
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}
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public static function save(string $tick, string $mood=''): void {
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// build the tick path and filename from the current time
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$now = new DateTime('now', new DateTimeZone('UTC'));
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$year = $now->format('Y');
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$month = $now->format('m');
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$day = $now->format('d');
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$time = $now->format('H:i:s');
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// build the full path to the tick file
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$dir = TICKS_DIR . "/$year/$month";
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$filename = "$dir/$day.txt";
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// create the directory if it doesn't exist
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if (!is_dir($dir)) {
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mkdir($dir, 0770, true);
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}
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// write the tick to the file (the file will be created if it doesn't exist)
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$content = $time . '|' . $mood . '|' . $tick . "\n";
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file_put_contents($filename, $content, FILE_APPEND);
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}
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public static function get(string $y, string $m, string $d, string $H, string $i, string $s): array{
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$tickTime = new DateTime("$y-$m-$d $H:$i:$s");
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$timestamp = "$H:$i:$s";
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$file = TICKS_DIR . "/$y/$m/$d.txt";
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if (!file_exists($file)) {
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http_response_code(404);
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echo "Tick not found: $file.";
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exit;
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}
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$lines = file($file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
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foreach ($lines as $line) {
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if (str_starts_with($line, $timestamp)) {
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echo $line;
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exit;
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list($time, $emoji, $tick) = explode('|', $line, 3);
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return [
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'tickTime' => $tickTime,
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'emoji' => $emoji,
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'tick' => $tick,
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'config' => ConfigModel::load(),
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];
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}
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}
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}
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}
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