App\Model\EditCounter::getLongestBlockSeconds()

Complexity

Conditions	15
Paths	30

Size

Total Lines	71
Code Lines	29

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public function getLongestBlockSeconds()
    {
        if (isset($this->longestBlockSeconds)) {
            return $this->longestBlockSeconds;
        }

        $blocks = $this->getBlocks('received', false);
        $this->longestBlockSeconds = false;

        // If there was never a block, the longest was zero seconds.
        if (empty($blocks)) {
            return 0;
        }

        /**
         * Keep track of the last block so we can determine the duration
         * if the current block in the loop is an unblock.
         * @var int[] $lastBlock
         *   [
         *     Unix timestamp,
         *     Duration in seconds (-1 if indefinite)
         *   ]
         */
        $lastBlock = [null, null];

        foreach (array_values($blocks) as $block) {
            [$timestamp, $duration] = $this->parseBlockLogEntry($block);

            if ('block' === $block['log_action']) {
                // This is a new block, so first see if the duration of the last
                // block exceeded our longest duration. -1 duration means indefinite.
                if ($lastBlock[1] > $this->longestBlockSeconds || -1 === $lastBlock[1]) {
                    $this->longestBlockSeconds = $lastBlock[1];
                }

                // Now set this as the last block.
                $lastBlock = [$timestamp, $duration];
            } elseif ('unblock' === $block['log_action']) {
                // The last block was lifted. So the duration will be the time from when the
                // last block was set to the time of the unblock.
                $timeSinceLastBlock = $timestamp - $lastBlock[0];
                if ($timeSinceLastBlock > $this->longestBlockSeconds) {
                    $this->longestBlockSeconds = $timeSinceLastBlock;

                    // Reset the last block, as it has now been accounted for.
                    $lastBlock = [null, null];
                }
            } elseif ('reblock' === $block['log_action'] && -1 !== $lastBlock[1]) {
                // The last block was modified. So we will adjust $lastBlock to include
                // the difference of the duration of the new reblock, and time since the last block.
                // $lastBlock is left unchanged if its duration was indefinite.
                $timeSinceLastBlock = $timestamp - $lastBlock[0];
                $lastBlock[1] = $timeSinceLastBlock + $duration;
            }
        }

        // If the last block was indefinite, we'll return that as the longest duration.
        if (-1 === $lastBlock[1]) {
            return -1;
        }

        // Test if the last block is still active, and if so use the expiry as the duration.
        $lastBlockExpiry = $lastBlock[0] + $lastBlock[1];
        if ($lastBlockExpiry > time() && $lastBlockExpiry > $this->longestBlockSeconds) {
            $this->longestBlockSeconds = $lastBlock[1];
        // Otherwise, test if the duration of the last block is now the longest overall.
        } elseif ($lastBlock[1] > $this->longestBlockSeconds) {
            $this->longestBlockSeconds = $lastBlock[1];
        }

        return $this->longestBlockSeconds;
    }