Git My Pants

git-my-pants

#!/opt/local/bin/php
<?php

$baseShas = array(
    'master' => 'a89471b',
    'develop' => '38d6412',
);
$permaBranches = array(
    'master',
    'staging',
    'develop',
    'v3beta',
    'api',
);
$branchBases = array();
foreach ($baseShas as $base => $sha) {
    $branchBases = array_merge(
        $branchBases,
        array_fill_keys(
            explode("\n", preg_replace('/^[ \*]*/m', '', trim(`git branch --contains $sha`))),
            $base
        ));
}


$gitList = `git for-each-ref --sort='authordate' --format='%(authordate:short):%(refname):%(upstream:short)' refs/heads | sed -e 's-refs/heads/--'`;

$branches = explode("\n", trim($gitList));
$pants = array();
$maxMsgLength = 0;
$maxActLength = 0;
$maxBranchLength = 0;
foreach ($branches as $dateBranch) {
    list($date, $branch, $remote) = explode(':', $dateBranch);
    if (array_key_exists($branch, $baseShas)) {
        continue;
    }

    $maxBranchLength = max($maxBranchLength, strlen($branch));
    $msg = 'unknown';
    $action = 'wtf';
    if (strtotime($date) < strtotime("-270 days")) {
        $msg = "freakin ancient, buddy";
        $action = 'reconsider';
    } elseif (array_key_exists($branch, $branchBases)) {
        $base = $branchBases[$branch];
        $aheadBehind = trim(`git rev-list --left-right $branch...$base --`);
        $ahead = substr_count($aheadBehind, '<');
        $behind = substr_count($aheadBehind, '>');
        if ($ahead && $behind) {
            $msg = "$base: $ahead ahead, $behind behind";
            $action = 'rebase';
            if ($remote) {
                $action = 'pull / merge';
            }
        } elseif ($ahead) {
            $msg = "$base: $ahead ahead";
            $action = 'share / PR';
            if (
                ('develop' == $base && 'v3beta' == $branch)
                ||
                ('master' == $base && 'staging' == $branch)
            ) {
                $action = 'merge / deploy';
            }
        } elseif ($behind) {
            $msg = "$base: $behind behind";
            $action = 'delete';
            if (in_array($branch, $permaBranches)) {
                $action = 'backport';
            }
        } else {
            $msg = "$base: spot on";
            $action = 'delete';
        }
        if ('delete' == $action && in_array($branch, $permaBranches)) {
            $action = 'just chill';
        }
    }
    $pants[] = array(
        'date' => $date,
        'branch' => $branch,
        'msg' => $msg,
        'action' => $action,
    );
    $maxMsgLength = max($maxMsgLength, strlen($msg));
    $maxActLength = max($maxActLength, strlen($action));
}

$cols = "%-". $maxBranchLength ."s  %-". ($maxActLength +2) ."s  %s   %-". $maxMsgLength ."s\n";
$header = sprintf(
    $cols,
    "branch",
    " action",
    "last work ",
    "state"
    );
echo $header . str_repeat('-', strlen($header)) ."\n";
$pants = array_reverse($pants);
foreach ($pants as $foundMyPants) {
    printf(
        $cols,
        $foundMyPants['branch'],
        '['. $foundMyPants['action'] .']',
        $foundMyPants['date'],
        $foundMyPants['msg']
        );
}

echo <<<EOS

TODO:

√ 1. reorg columns: branch, action, date, comparison status
2. compare to the remote branch, to know if it should be pushed or pulled, etc.
3. compare the stashes to the branches, and include possible stash actions in
   the action recommendation
4. crop display width to window width (preferably by trimming the branch name)


EOS;