From 28b9892486303248437213ac84db5332dc8306d6 Mon Sep 17 00:00:00 2001
From: Matthew Hodgson <matthew@matrix.org>
Date: Wed, 30 Mar 2016 21:25:18 +0100
Subject: [PATCH] burndown generator

---
 scripts/issues-burndown.pl | 124 +++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 scripts/issues-burndown.pl

diff --git a/scripts/issues-burndown.pl b/scripts/issues-burndown.pl
new file mode 100644
index 00000000..7d0f3409
--- /dev/null
+++ b/scripts/issues-burndown.pl
@@ -0,0 +1,124 @@
+#!/usr/bin/env perl
+
+use warnings;
+use strict;
+
+use Net::GitHub;
+use DateTime;
+use DateTime::Format::ISO8601;
+
+my $gh = Net::GitHub->new(
+    login => 'ara4n', pass => 'secret'
+);
+
+$gh->set_default_user_repo('vector-im', 'vector-web'); 
+
+my @issues = $gh->issue->repos_issues({ state => 'all', milestone => 3 });
+while ($gh->issue->has_next_page) {
+    push @issues, $gh->issue->next_page;
+}
+
+# we want:
+# day by day:
+# split by { open, closed }
+# split by { bug, feature, neither }
+# each split by { p1, p2, p3, p4, p5, unprioritised }  <- priority
+# each split by { minor, major, critical, cosmetic, network, no-severity }  <- severity
+# then split (with overlap between the groups) as { total, tag1, tag2, ... }?
+
+# ...and then all over again split by milestone.
+
+my $days = {};
+my $schema = {};
+my $now = DateTime->now();
+
+foreach my $issue (@issues) {
+    next if ($issue->{pull_request});
+    
+    # use Data::Dumper;
+    # print STDERR Dumper($issue);
+
+    my @label_list = map { $_->{name} } @{$issue->{labels}};
+    my $labels = {};
+    $labels->{$_} = 1 foreach (@label_list);
+    $labels->{bug}++ if ($labels->{cosmetic} && !$labels->{bug} && !$labels->{feature});
+
+    my $extract_labels = sub {
+        my $label = undef;
+        foreach (@_) {
+            $label ||= $_ if (delete $labels->{$_});
+        }
+        return $label;
+    };
+
+    my $state = $issue->{state};
+    my $type = &$extract_labels(qw(bug feature)) || "neither";
+    my $priority = &$extract_labels(qw(p1 p2 p3 p4 p5)) || "unprioritised";
+    my $severity = &$extract_labels(qw(minor major critical cosmetic network)) || "no-severity";
+
+    my $start = DateTime::Format::ISO8601->parse_datetime($issue->{created_at});
+
+    do {
+        my $ymd = $start->ymd();
+
+        $days->{ $ymd }->{ 'created' }->{ $type }->{ $priority }->{ $severity }->{ total }++;
+        $schema->{ 'created' }->{ $type }->{ $priority }->{ $severity }->{ total }++;
+        foreach (keys %$labels) {
+            $days->{ $ymd }->{ 'created' }->{ $type }->{ $priority }->{ $severity }->{ $_ }++;
+            $schema->{ 'created' }->{ $type }->{ $priority }->{ $severity }->{ $_ }++;
+        }
+
+        $start = $start->add(days => 1);
+    } while (DateTime->compare($start, $now) < 0);
+
+    if ($state eq 'closed') {
+        my $end = DateTime::Format::ISO8601->parse_datetime($issue->{closed_at});
+        do {
+            my $ymd = $end->ymd();
+
+            $days->{ $ymd }->{ 'resolved' }->{ $type }->{ $priority }->{ $severity }->{ total }++;
+            $schema->{ 'resolved' }->{ $type }->{ $priority }->{ $severity }->{ total }++;
+            foreach (keys %$labels) {
+                $days->{ $ymd }->{ 'resolved' }->{ $type }->{ $priority }->{ $severity }->{ $_ }++;
+                $schema->{ 'resolved' }->{ $type }->{ $priority }->{ $severity }->{ $_ }++;
+            }
+
+            $end = $end->add(days => 1);
+        } while (DateTime->compare($end, $now) < 0);
+    }
+}
+
+print "day,";
+foreach my $state (sort keys %{$schema}) {
+    foreach my $type (grep { /^(bug|feature)$/ } sort keys %{$schema->{$state}}) {
+        foreach my $priority (grep { /^(p1|p2)$/ } sort keys %{$schema->{$state}->{$type}}) {
+            foreach my $severity (sort keys %{$schema->{$state}->{$type}->{$priority}}) {
+                # foreach my $tag (sort keys %{$schema->{$state}->{$type}->{$priority}->{$severity}}) {
+                #     print "\"$type\n$priority\n$severity\n$tag\",";
+                # }
+                print "\"$state\n$type\n$priority\n$severity\",";
+            }
+        }
+    }
+}
+print "\n";
+
+foreach my $day (sort keys %$days) {
+    print "$day,";
+    foreach my $state (sort keys %{$schema}) {
+        foreach my $type (grep { /^(bug|feature)$/ } sort keys %{$schema->{$state}}) {
+            foreach my $priority (grep { /^(p1|p2)$/ } sort keys %{$schema->{$state}->{$type}}) {
+                foreach my $severity (sort keys %{$schema->{$state}->{$type}->{$priority}}) {
+                    # foreach my $tag (sort keys %{$schema->{$state}->{$type}->{$priority}->{$severity}}) {
+                    #     print $days->{$day}->{$state}->{$type}->{$priority}->{$severity}->{$tag} || 0;
+                    #     print ",";
+                    # }
+                    print $days->{$day}->{$state}->{$type}->{$priority}->{$severity}->{total} || 0;
+                    print ",";
+                }
+            }
+        }
+    }
+    print "\n";
+}
+