#!/usr/bonsaitools/bin/perl -w
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Terry Weissman <terry@mozilla.org>,
# Bryce Nesbitt <bryce-mozilla@nextbus.com>

# To recreate the shadow database,  run "processmail regenerate" .

use diagnostics;
use strict;

require "globals.pl";

$| = 1;

umask(0);

$::lockcount = 0;
my $regenerate = 0;
my $nametoexclude = "";

my @forcecc;

sub Lock {
    if ($::lockcount <= 0) {
        $::lockcount = 0;
        if (!open(LOCKFID, ">>data/maillock")) {
            mkdir "data", 0777;
            chmod 0777, "data";
            open(LOCKFID, ">>data/maillock") || die "Can't open lockfile.";
        }
        my $val = flock(LOCKFID,2);
        if (!$val) { # '2' is magic 'exclusive lock' const.
            print "Lock failed: $val\n";
        }
        chmod 0666, "data/maillock";
    }
    $::lockcount++;
}

sub Unlock {
    $::lockcount--;
    if ($::lockcount <= 0) {
        flock(LOCKFID,8);       # '8' is magic 'unlock' const.
        close LOCKFID;
    }
}

sub FileSize {
    my ($filename) = (@_);
    my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
        $atime,$mtime,$ctime,$blksize,$blocks)
        = stat($filename);
    if (defined $size) {
        return $size;
    }
    return -1;
}



sub Different {
    my ($file1, $file2) = (@_);
    my $size1 = FileSize($file1);
    my $size2 = FileSize($file2);
    if ($size1 != $size2) {
        return 1;
    }
    open(FID1, "<$file1") || die "Can't open $file1";
    open(FID2, "<$file2") || die "Can't open $file2";
    my $d1; 
    my $d2; 
    if (read(FID1, $d1, $size1) ne $size1) {
        die "Can't read $size1 bytes from $file1";
    }
    if (read(FID2, $d2, $size2) ne $size2) {
        die "Can't read $size2 bytes from $file2";
    }
    close FID1;
    close FID2;
    return ($d1 ne $d2);
}


sub DescCC {
    my ($cclist) = (@_);
    if (scalar(@$cclist) <= 0) {
        return "";
    }
    return "Cc: " . join(", ", @$cclist) . "\n";
}


sub DescDependencies {
    my ($id) = (@_);
    if (!Param("usedependencies")) {
        return "";
    }
    my $result = "";
    my $me = "blocked";
    my $target = "dependson";
    my $title = "BugsThisDependsOn";
    for (1..2) {
        SendSQL("select $target from dependencies where $me = $id order by $target");
        my @list;
        while (MoreSQLData()) {
            push(@list, FetchOneColumn());
        }
        if (@list) {
            my @verbose;
            my $count = 0;
            foreach my $i (@list) {
                SendSQL("select bug_status, resolution from bugs where bug_id = $i");
                my ($bug_status, $resolution) = (FetchSQLData());
                my $desc;
                if ($bug_status eq "NEW" || $bug_status eq "ASSIGNED" ||
                    $bug_status eq "REOPENED") {
                    $desc = "";
                } else {
                    $desc = "[$resolution]";
                }
                push(@verbose, $i . "$desc");
                $count++;
            }
            if ($count > 5) {
                $result .= "$title: Big list (more than 5) has been omitted\n";
            } else {
                $result .= "$title: " . join(', ', @verbose) . "\n";
            }
        }
        my $tmp = $me;
        $me = $target;
        $target = $tmp;
        $title = "OtherBugsDependingOnThis";
    }
    return $result;
}



sub GetBugText {
    my ($id) = (@_);
    undef %::bug;
    
    my @collist = ("bug_id", "product", "version", "rep_platform", "op_sys",
                   "bug_status", "resolution", "priority", "bug_severity",
                   "assigned_to", "reporter", "bug_file_loc",
                   "short_desc", "component", "qa_contact", "target_milestone",
                   "status_whiteboard", "groupset");

    my $query = "select " . join(", ", @collist) .
        " from bugs where bug_id = $id";

    SendSQL($query);

    my @row;
    if (!(@row = FetchSQLData())) {
        return "";
    }
    foreach my $field (@collist) {
        $::bug{$field} = shift @row;
        if (!defined $::bug{$field}) {
            $::bug{$field} = "";
        }
    }

    $::bug{'assigned_to'} = DBID_to_name($::bug{'assigned_to'});
    $::bug{'reporter'} = DBID_to_name($::bug{'reporter'});
    my $qa_contact = "";
    my $target_milestone = "";
    my $status_whiteboard = "";
    if (Param('useqacontact') && $::bug{'qa_contact'} > 0) {
        $::bug{'qa_contact'} = DBID_to_name($::bug{'qa_contact'});
        $qa_contact = "QAContact: $::bug{'qa_contact'}\n";
    } else {
        $::bug{'qa_contact'} = "";
    }
    if (Param('usetargetmilestone') && $::bug{'target_milestone'} ne "") {
        $target_milestone = "TargetMilestone: $::bug{'target_milestone'}\n";
    }
    if (Param('usestatuswhiteboard') && $::bug{'status_whiteboard'} ne "") {
        $status_whiteboard = "StatusWhiteboard: $::bug{'status_whiteboard'}\n";
    }

    $::bug{'long_desc'} = GetLongDescriptionAsText($id);

    my @cclist;
    @cclist = split(/,/, ShowCcList($id));
    my @voterlist;
    SendSQL("select profiles.login_name from votes, profiles where votes.bug_id = $id and profiles.userid = votes.who");
    while (MoreSQLData()) {
        my $v = FetchOneColumn();
        push(@voterlist, $v);
    }
    $::bug{'cclist'} = join(',', @cclist);
    $::bug{'voterlist'} = join(',', @voterlist);

    if (Param("prettyasciimail")) {
        $^A = "";
        my $temp = formline <<'END',$::bug{'short_desc'},$id,$::bug{'product'},$::bug{'bug_status'},$::bug{'version'},$::bug{'resolution'},$::bug{'rep_platform'},$::bug{'bug_severity'},$::bug{'op_sys'},$::bug{'priority'},$::bug{'component'},$::bug{'assigned_to'},$::bug{'reporter'},$qa_contact,DescCC(\@cclist),$target_milestone,${status_whiteboard},$::bug{'bug_file_loc'},DescDependencies($id);
+============================================================================+
| @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
+----------------------------------------------------------------------------+
|        Bug #: @<<<<<<<<<<<                Product: @<<<<<<<<<<<<<<<<<<<<<< |
|       Status: @<<<<<<<<<<<<<<<<<<         Version: @<<<<<<<<<<<<<<<<<<<<<< |
|   Resolution: @<<<<<<<<<<<<<<<<<<        Platform: @<<<<<<<<<<<<<<<<<<<<<< |
|     Severity: @<<<<<<<<<<<<<<<<<<      OS/Version: @<<<<<<<<<<<<<<<<<<<<<< |
|     Priority: @<<<<<<<<<<<<<<<<<<       Component: @<<<<<<<<<<<<<<<<<<<<<< |
+----------------------------------------------------------------------------+
|  Assigned To: @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
|  Reported By: @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
|  ~QA Contact: ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
|  ~   CC list: ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
+----------------------------------------------------------------------------+
| ~  Milestone: ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
|~  Whiteboard: ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
|          URL: @<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
|~Dependencies: ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
+============================================================================+
|                              DESCRIPTION                                   |
END

    my $prettymail = $^A . $::bug{'long_desc'};
        return $prettymail;


    } else {
        return "Bug\#: $id
Product: $::bug{'product'}
Version: $::bug{'version'}
Platform: $::bug{'rep_platform'}
OS/Version: $::bug{'op_sys'}
Status: $::bug{'bug_status'}   
Resolution: $::bug{'resolution'}
Severity: $::bug{'bug_severity'}
Priority: $::bug{'priority'}
Component: $::bug{'component'}
AssignedTo: $::bug{'assigned_to'}                            
ReportedBy: $::bug{'reporter'}               
$qa_contact$target_milestone${status_whiteboard}URL: $::bug{'bug_file_loc'}
" . DescCC(\@cclist) . "Summary: $::bug{'short_desc'}
" . DescDependencies($id) . "
$::bug{'long_desc'}
";
}

}


my $didexclude = 0;
my %seen;
my @sentlist;
sub fixaddresses {
    my ($field, $list) = (@_);
    my @result;
    foreach my $i (@$list) {
        if (!defined $i || $i eq "") {
            next;
        }
        SendSQL("select emailnotification, groupset & $::bug{'groupset'} from profiles where login_name = " .
                SqlQuote($i));
        my ($emailnotification, $groupset) = (FetchSQLData());
        if ($groupset ne $::bug{'groupset'}) {
            next;
        }
        if ($emailnotification eq "CConly") {
            if ($field ne "cc") {
                next;
            }
        }
        if ($emailnotification eq "ExcludeSelfChanges" &&
           (lc($i) eq $nametoexclude)) {
            $didexclude = 1;
            next;
        }
        
        if (!defined $::nomail{$i} && !defined $seen{$i}) {
            push(@result, $i . Param('emailsuffix'));
            $seen{$i} = 1;
        }
    }
    return join(", ",  @result);
}


sub Log {
    my ($str) = (@_);
    Lock();
    open(FID, ">>data/maillog") || die "Can't write to data/maillog";
    print FID time2str("%D %H:%M", time()) . ": $str\n";
    close FID;
    Unlock();
}
    

sub FormatTriple {
    my ($a, $b, $c) = (@_);
    $^A = "";
    my $temp = formline << 'END', $a, $b, $c;
^>>>>>>>>>>>>>>>>>>|^<<<<<<<<<<<<<<<<<<<<<<<<<<<|^<<<<<<<<<<<<<<<<<<<<<<<<<<~~
END
    ; # This semicolon appeases my emacs editor macros. :-)
    return $^A;
}
    
sub FormatDouble {
    my ($a, $b) = (@_);
    $a .= ":";
    $^A = "";
    my $temp = formline << 'END', $a, $b;
^>>>>>>>>>>>>>>>>>> ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<~~
END
    ; # This semicolon appeases my emacs editor macros. :-)
    return $^A;
}
    

sub NewProcessOneBug {
    my ($id) = (@_);

    my @headerlist;
    my %values;
    my %defmailhead;
    my %fielddescription;

    my $msg = "";

    SendSQL("SELECT name, description, mailhead FROM fielddefs " .
            "ORDER BY sortkey");
    while (MoreSQLData()) {
        my ($field, $description, $mailhead) = (FetchSQLData());
        push(@headerlist, $field);
        $defmailhead{$field} = $mailhead;
        $fielddescription{$field} = $description;
    }
    SendSQL("SELECT " . join(',', @::log_columns) . ", lastdiffed, now() " .
            "FROM bugs WHERE bug_id = $id");
    my @row = FetchSQLData();
    foreach my $i (@::log_columns) {
        $values{$i} = shift(@row);
    }
    my ($start, $end) = (@row);
    $values{'cc'} = ShowCcList($id);
    
    my @voterlist;
    SendSQL("SELECT profiles.login_name FROM votes, profiles " .
            "WHERE votes.bug_id = $id AND profiles.userid = votes.who");
    while (MoreSQLData()) {
        push(@voterlist, FetchOneColumn());
    }

    $values{'assigned_to'} = DBID_to_name($values{'assigned_to'});
    $values{'reporter'} = DBID_to_name($values{'reporter'});
    if ($values{'qa_contact'}) {
        $values{'qa_contact'} = DBID_to_name($values{'qa_contact'});
    }

    my @diffs;


    SendSQL("SELECT profiles.login_name, fielddefs.description, " .
            "       bug_when, oldvalue, newvalue " .
            "FROM bugs_activity, fielddefs, profiles " .
            "WHERE bug_id = $id " .
            "  AND fielddefs.fieldid = bugs_activity.fieldid " .
            "  AND profiles.userid = who " .
            "  AND bug_when > '$start' " .
            "  AND bug_when <= '$end' " .
            "ORDER BY bug_when"
            );

    while (MoreSQLData()) {
        my @row = FetchSQLData();
        push(@diffs, \@row);
    }

    my $difftext = "";
    my $lastwho = "";
    foreach my $ref (@diffs) {
        my ($who, $what, $when, $old, $new) = (@$ref);
        if ($who ne $lastwho) {
            $lastwho = $who;
            $difftext .= "\n$who changed:\n\n";
            $difftext .= FormatTriple("What    ", "Old Value", "New Value");
            $difftext .= ('-' x 76) . "\n";
        }
        $difftext .= FormatTriple($what, $old, $new);
    }

    $difftext = trim($difftext);


    my $deptext = "";

    my $resid = 

    SendSQL("SELECT bugs_activity.bug_id, fielddefs.name, " .
            "       oldvalue, newvalue " .
            "FROM bugs_activity, dependencies, fielddefs ".
            "WHERE bugs_activity.bug_id = dependencies.dependson " .
            "  AND dependencies.blocked = $id " .
            "  AND fielddefs.fieldid = bugs_activity.fieldid" .
            "  AND (fielddefs.name = 'bug_status' " .
            "    OR fielddefs.name = 'resolution') " .
            "  AND bug_when > '$start' " .
            "  AND bug_when <= '$end' " .
            "ORDER BY bug_when, bug_id");
    
    my $thisdiff = "";
    my $lastbug = "";
    my $interestingchange = 0;
    while (MoreSQLData()) {
        my ($bug, $what, $old, $new) = (FetchSQLData());
        if ($bug ne $lastbug) {
            if ($interestingchange) {
                $deptext .= $thisdiff;
            }
            $lastbug = $bug;
            $thisdiff =
                "\nThis bug depends on bug $bug, which changed state:\n\n";
            $thisdiff .= FormatTriple("What    ", "Old Value", "New Value");
            $thisdiff .= ('-' x 76) . "\n";
            $interestingchange = 0;
        }
        $thisdiff .= FormatTriple($fielddescription{$what}, $old, $new);
        if ($what eq 'bug_status' && IsOpenedState($old) ne IsOpenedState($new)) {
            $interestingchange = 1;
        }
    }
    if ($interestingchange) {
        $deptext .= $thisdiff;
    }

    $deptext = trim($deptext);

    if ($deptext) {
        $difftext = trim($difftext . "\n\n" . $deptext);
    }


    my $newcomments = GetLongDescriptionAsText($id, $start, $end);

    my $count = 0;
    for my $person ($values{'assigned_to'}, $values{'reporter'},
                    split(/,/, $values{'cc'}),
                    @voterlist,
                    @forcecc) {
        $count++;
        if ($seen{$person}) {
            next;
        }
        
        SendSQL("SELECT userid, emailnotification, newemailtech," .
                "       groupset & $values{'groupset'} " .
                "FROM profiles WHERE login_name = " . SqlQuote($person));
        my ($userid, $emailnotification, $newemailtech,
            $groupset) = (FetchSQLData());
        if (!$newemailtech || !Param('newemailtech')) {
            next;
        }
        $seen{$person} = 1;
        if ($groupset ne $values{'groupset'}) {
            next;
        }
        if ($emailnotification eq "ExcludeSelfChanges" &&
            lc($person) eq $nametoexclude) {
            $didexclude = 1;
            next;
        }
        if ($emailnotification eq "CCOnly" && $count < 3) {
            next;
        }

        my %mailhead = %defmailhead;

#          SendSQL("SELECT name, mailhead, maildiffs FROM diffprefs, fielddefs WHERE fielddefs.fieldid = diffprefs.fieldid AND userid = $userid");
#          while (MoreSQLData()) {
#              my ($field, $h, $d) = (FetchSQLData());
#              $mailhead{$field} = $h;
#              $maildiffs{$field} = $d;
#          }

#          my $maxlen = 0;
#          foreach my $f (keys %mailhead) {
#              if ($mailhead{$f}) {
#                  my $l = length($fielddescription{$f});
#                  if ($maxlen < $l) {
#                      $maxlen = $l;
#                  }
#              }
#          }


        my $head = "";
        
        foreach my $f (@headerlist) {
            if ($mailhead{$f}) {
                my $value = $values{$f};
                if (!defined $value) {
                    # Probaby ought to whine or something. ###
                    next;
                }
                my $desc = $fielddescription{$f};
                $head .= FormatDouble($desc, $value);

#                  my $extra = $maxlen - length($desc);
#                  $head .= ($extra x " ");
#                  $head .= $desc . ": ";
#                  while (1) {
#                      if (length($value) < 70) {
#                          $head .= $value . "\n";
#                          last;
#                      }
#                      my $pos = rindex($value, " ", 70);
#                      if ($pos < 0) {
#                          $pos = rindex($value, ",", 70);
#                          if ($pos < 0) {
#                              $pos = 70;
#                          }
#                      }
#                      $head .= substr($value, 0, 70) . "\n";
#                      $head .= (($extra + 2) x " ");
#                      $value = substr($value, 70);
#                  }
            }
        }

        

        if ($difftext eq "" && $newcomments eq "") {
            # Whoops, no differences!
            next;
        }

        my $isnew = ($start !~ m/[1-9]/);

        my %substs;
        $substs{"neworchanged"} = $isnew ? "New" : "Changed";
        $substs{"to"} = $person;
        $substs{"cc"} = '';
        $substs{"bugid"} = $id;
        if ($isnew) {
            $substs{"diffs"} = $head . "\n\n" . $newcomments;
        } else {
            $substs{"diffs"} = $difftext . "\n\n" . $newcomments;
        }
        $substs{"summary"} = $values{'short_desc'};
        
        my $template = Param("newchangedmail");

        my $msg = PerformSubsts($template, \%substs);
        open(SENDMAIL, "|/usr/lib/sendmail -t") ||
            die "Can't open sendmail";
        
        print SENDMAIL trim($msg) . "\n";
        close SENDMAIL;
        push(@sentlist, $person);
    }

        



    SendSQL("UPDATE bugs SET lastdiffed = '$end', delta_ts = delta_ts " .
            "WHERE bug_id = $id");
}



sub ProcessOneBug {
    my $i = $_[0];
    NewProcessOneBug($i);
    my $old = "shadow/$i";
    my $new = "shadow/$i.tmp.$$";
    my $diffs = "shadow/$i.diffs.$$";
    my $verb = "Changed";
    if (!stat($old)) {
        mkdir "shadow", 0777;
        chmod 0777, "shadow";
        open(OLD, ">$old") || die "Couldn't create null $old";
        close OLD;
        $verb = "New";
    }
    my $text = GetBugText($i);
    if ($text eq "") {
        die "Couldn't find bug $i.";
    }
    open(FID, ">$new") || die "Couldn't create $new";
    print FID $text;
    close FID;
    if (Different($old, $new)) {
        system("diff -c -b $old $new > $diffs");
        my $tolist = fixaddresses("to",
                                  [$::bug{'assigned_to'}, $::bug{'reporter'},
                                   $::bug{'qa_contact'}]);
        my @combinedcc;
        foreach my $v (split(/,/, "$::bug{'cclist'},$::bug{'voterlist'}")) {
            push @combinedcc, $v;
        }
        push (@combinedcc, (@forcecc));
        my $cclist = fixaddresses("cc", \@combinedcc);
        my $logstr = "Bug $i $verb";
        if ($tolist ne "" || $cclist ne "") {
            my %substs;

            $substs{"fullbugreport"} = $text; # added ability to include the full bug report
            $substs{"to"} = $tolist;
            $substs{"cc"} = $cclist;
            $substs{"bugid"} = $i;
            $substs{"diffs"} = "";
            open(DIFFS, "<$diffs") || die "Can't open $diffs";
            while (<DIFFS>) {
                $substs{"diffs"} .= $_;
            }
            close DIFFS;
            $substs{"neworchanged"} = $verb;
            $substs{"summary"} = $::bug{'short_desc'};
            my $msg = PerformSubsts(Param("changedmail"), \%substs);

            if (!$regenerate) {
                # Note: fixaddresses may result in a Cc: only.  This seems
                # harmless.
                open(SENDMAIL, "|/usr/lib/sendmail -t") ||
                    die "Can't open sendmail";

                print SENDMAIL $msg;
                close SENDMAIL;
                foreach my $n (split(/[, ]+/, "$tolist,$cclist")) {
                    if ($n ne "") {
                        push(@sentlist, $n);
                    }
                }

                $logstr = "$logstr; mail sent to $tolist, $cclist";
            }
        }
        unlink($diffs);
        Log($logstr);
    }
    if (@sentlist) {
        print "<B>Email sent to:</B> " . join(", ", @sentlist) . "\n";
        if ($didexclude) {
            print qq{<B>Excluding:</B> $nametoexclude (<a href="userprefs.cgi?bank=diffs">change your preferences</a> if you wish not to be excluded)\n};
        }
    }
    rename($new, $old) || die "Can't rename $new to $old";
    chmod 0666, $old;
    if ($regenerate) {
        print "$i ";
    }
    %seen = ();
    @sentlist = ();
}

# Code starts here

ConnectToDatabase();
GetVersionTable();
Lock();

if (open(FID, "<data/nomail")) {
    while (<FID>) {
        $::nomail{trim($_)} = 1;
    }
    close FID;
}

# To recreate the shadow database,  run "processmail regenerate" .
if ($ARGV[0] eq "regenerate") {
    $regenerate = 1;
    shift @ARGV;
    SendSQL("select bug_id from bugs order by bug_id");
    my @regenerate_list;
    while (my @row = FetchSQLData()) {
        push @regenerate_list, $row[0];
    }
    foreach my $i (@regenerate_list) {
        ProcessOneBug($i);
        Unlock();
        Lock();
    }
    print("\n");
    exit;
}

if ($ARGV[0] eq "-forcecc") {
    shift(@ARGV);
    foreach my $i (split(/,/, shift(@ARGV))) {
        push(@forcecc, trim($i));
    }
}

if (($#ARGV < 0) || ($#ARGV > 1)) {
    print "Usage error: processmail {bugid} {nametoexclude}\nOr: processmail regenerate\n";
    exit;
}

if ($#ARGV == 1) {
    $nametoexclude = lc($ARGV[1]);
}

if ($ARGV[0] eq "rescanall") {
    print "<br> Collecting bug ids...\n";
    SendSQL("select bug_id from bugs where to_days(now()) - to_days(delta_ts) <= 2 order by bug_id");
    my @list;
    while (my @row = FetchSQLData()) {
        push @list, $row[0];
    }
    foreach my $id (@list) {
        $ARGV[0] = $id;
        print "<br> Doing bug $id\n";
        ProcessOneBug($ARGV[0]);
    }
} else {
    ProcessOneBug($ARGV[0]);
}

exit;