branch_status

#!/usr/bin/env php
<?php

    $wd = getcwd();

    $ref = $argv[1] ?? '' ?: 'master';

    $git_dir = shell_exec('git rev-parse --show-toplevel');

    if(!$git_dir) {
        fprintf(STDERR, 'Not inside a git path');
        exit(1);
    }

    $list_raw = explode(PHP_EOL, trim(shell_exec("git branch --list --format '%(objectname) %(refname:short)  %(committerdate)'")));
    $branches = [];
    $shas = [];
    foreach($list_raw as $row)
    {
        $columns = explode(' ', $row, 3);
        $columns = array_values(array_filter($columns));
        $branches[$columns[1]] = [
            'sha' => $columns[0],
            'name' => $columns[1],
            'date' => $columns[2],
            'time' => strtotime($columns[2]),
        ];
        $shas[$columns[0]] = [];
    }
    foreach(array_keys($shas) as $sha)
    {
        $log = trim(shell_exec('git log --oneline ' . $ref . '..' . $sha));
        if($log)
        {
            $shas[$sha] = count(explode(PHP_EOL, $log));
            continue;
        }

        $log = trim(shell_exec('git log --oneline ' . $sha . '..' . $ref));
        if($log)
        {
            $shas[$sha] = -count(explode(PHP_EOL, $log));
            continue;
        }

        $shas[$sha] = 0;
    }
    foreach(array_keys($branches) as $branch)
    {
        $branches[$branch]['commits'] = $shas[$branches[$branch]['sha']];
    }

    if(empty($branches[$ref]))
    {
        $branches[$ref] = [
            'sha' => $ref,
            'name' => $ref,
            'date' => null,
            'time' => 0,
            'commits' => 0,
        ];
    }

    usort($branches, function($a, $b) {
        if($a['commits'] < 1 && $b['commits'] > 0)
        {
            return 1;
        }
        if($a['commits'] > 0 && $b['commits'] < 1)
        {
            return -1;
        }
        if($a['time'] !== $b['time'])
        {
            return $b['time'] - $a['time'];
        }
        if($a['commits'] !== $b['commits'])
        {
            return $b['commits'] - $a['commits'];
        }
        return strcmp($a['name'], $b['name']);
    });

    $timelimit = time() - 12*3600;

    foreach($branches as $branch)
    {
        if($branch['commits']) {
            printf(
                "%5d  %10s  %s\n",
                $branch['commits'],
                date($branch['time'] < $timelimit ? 'Y-m-d' : ' H:i:s ', $branch['time']),
                $branch['name']
            );
        } else {
            echo '                -- ', $branch['name'], ' --', PHP_EOL;
        }
    }