#!/usr/bin/perl
#
# whatdoiwanttodo: gives you a menu of the commands run most frequently from 
# your bash_history file. It's sort of taking the piss out of whoami.
#
#               Copyright (C)2005  Charlie Harvey
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston,
# MA  02111-1307, USA.
# Also available on line: http://www.gnu.org/copyleft/gpl.html
#
# v.0.1 working
#
# installation
# ------------
#
# NB. You have to be using bash, AFAIK the history file should always be in your home directory
# and called .bash_history (tested on debian && mdk). If not, you'll have to change the $HIST 
# variable below.
#
# 1. copy this file to /usr/local/bin/whatdoiwanttodo (or somewhere else on your $PATH)
# 2. run chmod 755 /usr/local/bin/whatdoiwanttodo
# 3. thassit. 
#
# Give me a shout with any problems, or improvements charlie _at_ charlieharvey _dot_ com
#

use strict;

my $HIST = $ENV{'HOME'} . "/.bash_history"; # your bash history file
my %hash;	# hash to hold the file && count how many times a command comes up

# open up and enhash history file
open (IN,"$HIST") || die ("Can't open $HIST .");
while(<IN>) { 
	chomp $_; 
	map {$hash{$_}++ => $_} $_; 
}
close IN;

# put keys into an array, sorted by value
my @all_keys = sort hash_descending(keys %hash);

# print 'menu' of top 10 cmds
foreach (0..9) {
	unless (!$hash{$all_keys[$_]}){ 
		printf ("%2d. ", $_); 
		print $all_keys[$_] . " (" . $hash{$all_keys[$_]} . ")\n";
	}
}
print (" Q. quit (leave whatdoiwanttodo)\n\n> ");

# run selecta loop bit
choices();
exit(0);

## ---------------------------------------------------------------

# used to sort our hash by descending values, rather than keys ...
sub hash_descending {
	   $hash{$b} <=> $hash{$a};
}


# deal with input. execute command or quit...
sub choices() {
	my $choice=<>;
	chomp $choice;
	while ($choice!~/^[qQ\d]{1}$/) {
		print "\b\r> ";
		$choice=<>;
		chomp $choice;
	}
	if ($choice eq "q" || $choice eq "Q") {return;}
	else { 
		system($all_keys[$choice]) == 0 || die ("Couldn't run $all_keys[$choice] ."); 
		system("echo '$all_keys[$choice]'>>$HIST") == 0 || die ("Couldn't append  $all_keys[$choice] to $HIST .");
	}
}