#!/usr/bin/perl
use strict;
use JSONConnection;
use JSON::Syck;
use POSIX qw(strftime);
use CursesChatMainwindow;

our $CFG;
our %known_ids;
our $js;
our %completion = map { $_ => 1 } qw{
   /buffer /list_buffers /colors
};

my $d = 0;
my $wt;
sub timer {
   $wt = AnyEvent->timer (after => 3, cb => sub {
      printline (status => [0, "TEST $d"]); $d++;
      timer ();
   });
}

sub write_chatline {
   my ($buffer, $nick, $time, $msg) = @_;
   my $ts = POSIX::strftime ("%T", localtime ($time));
   $ts = "[$ts] $nick> ";
   my (@chatline) = (("p".length $ts), 0, "$ts$msg");
   printline ($buffer, \@chatline);
}

sub load_cfg {
   $CFG ||= {};
   return unless -e "$ENV{HOME}/.jsonircclrc";
   open CFGH, "<", "$ENV{HOME}/.jsonircclrc" or die "Couldn't open ~/.jsonircclrc: $!";
   $::CFG = JSON::Syck::Load (do { local $/; <CFGH> });
}

load_cfg ();

my $c = AnyEvent->condvar;

#timer ();

$js =
   JSONClientConnection->new (packet_cb => sub {
      my ($js, $data) = @_;
      require JSON::Syck;
      if ($data->{type} eq 'message') {
         my ($src_id) = ($data->{src});
         $known_ids{$src_id}->{send_id} = $data->{to}->{id};
         write_chatline ($src_id, $data->{from}->{id}, $data->{timestamp}, $data->{message});
      }
      printline (debug => [0, JSON::Syck::Dump ($data)]);
   });

$js->connect (localhost => 1236);

CursesChatMainwindow::init;

printline (status => ['p0', 0, "Connected!"]);
printline (statusline => [20, "Welcome to the json enhanced chat framework!"]);

sub find_common_prefix {
   my (@words) = @_;
   @words = sort { length ($a) <=> length ($b) } @words;
   my $shortest = $words[0];

   while ($shortest ne '') {
      my $no_match = 0;
      for (@words) {
         unless (/^\Q$shortest\E/) {
            $no_match = 1;
            last;
         }
      }

      return $shortest if not $no_match;
      substr $shortest, -1, 1, '';
   }

   return '';
}

CursesChatMainwindow::register_complete_cb (sub {
   my ($word, $first_compl, $idx, @line) = @_;

   # TODO: make completion cycling with $first_compl
   # printline (undef, [0, "f[$first_compl]"]);

   my @found;
   if ($idx == 0) {
      for (keys %completion) {
         if (/^\Q$word\E/) {
            push @found, $_;
         }
      }
   } else {
      my %buffers = map { $_ => 1 } list_buffers;
      for (keys %known_ids) {
         delete $buffers{$_};
         if (/^\Q$word\E/) {
            push @found, $_;
         }
      }
      for (keys %buffers) {
         if (/^\Q$word\E/) {
            push @found, $_;
         }
      }
   }
   return "$found[0] " if @found == 1;
   if (@found) {
      printline (undef, [0, "$word: " . join ", ", @found]);
      return find_common_prefix (@found);
   }

   return $word;
});

CursesChatMainwindow::register_input_cb (sub {
   my ($input, $escape) = @_;

   unless (defined $input) {
      if (exists $CFG->{buffers}->{$escape}) {
         select_buffer (my $buf = $CFG->{buffers}->{$escape} || 'status');
         printline (statusline => [20, "[$buf]"]);
      } else {
         select_buffer ('status');
         printline (statusline => [20, "[status]"]);
      }
      return;
   }

   if ($input =~ m/^\/buffer\s*(\S+)/) {
      select_buffer ("$1");
      printline (statusline => [20, "[$1]"]);
   } elsif ($input =~ m/^\/list_buffers/) {
      printline (undef, [0, "buffers:"]);
      for (list_buffers) {
         printline (undef, [0, "- $_"]);
      }
   } elsif ($input =~ m/^\/colors/) {
      CursesChatMainwindow::print_colors;
   } else {
      my $dest_id = "" . current_buffer ();
      my $msg = {
         type => 'message',
         dest => $dest_id,
         message => $input
      };
      $js->send_data ($msg);
      printline (debug => [0, JSON::Syck::Dump ($msg)]);
      write_chatline ($dest_id, $known_ids{$dest_id}->{send_id} || "", time, $input);
   }
});

$c->wait;

CursesChatMainwindow::end;