#!/usr/bin/env perl

=pod

=head1 NAME

commandlog-log - show commandlog history

=head1 SYNOPSIS

    # Get most recent log entries:
    commandlog log

    # Get the 100 most recent log entries:
    commandlog log -n 100

    # Get all log entries:
    commandlog log -n 0

    # Get entries for January 1st (this is crap and needs work):
    commandlog log --after="2019-01-01 00:00:00" --before="2019-01-02 00:00:00"

    # Get entries for the current directory:
    commandlog log --path .

    # Run some query with debugging output enabled:
    commandlog log --debug [...]

=head1 AUTHOR

Brennen Bearnes

=cut

use warnings;
use strict;
use 5.10.0;

use Cwd;
use Data::Dumper;
use DBI;
use File::Spec;
use Getopt::Long;
use Pod::Usage;
use SQL::Abstract;
use Sys::Hostname;

use App::CommandLog;

# Handle options, including help generated from the POD above.
my $debug = 0;
my $limit;
my $before_date;
my $after_date;
my $path;
GetOptions(
  'debug'    => \$debug,
  'number=s' => \$limit,
  'before=s' => \$before_date,
  'after=s'  => \$after_date,
  'path=s'   => \$path,
  'help'     => sub { pod2usage(0) },
) or pod2usage(2);

unless (defined $limit) {
  unless ($before_date || $after_date) {
    $limit = 10;
  }
}

my %where = ();
if (length($after_date) && length($before_date))
{
  # We have both a start and an endpoint.
  $where{datetime} = [ '-and' => { '>', $after_date },
                                 { '<', $before_date } ];
}
elsif (length($after_date))
{
  # Just a starting point.
  $where{datetime} = { '>', $after_date };
}
elsif (length($before_date))
{
  # Just an ending point.
  $where{datetime} = { '<', $before_date };
}

if (defined $path) {
  # Resolve stuff like ".", "..", etc.:
  my $abs_path = File::Spec->rel2abs($path);
  $where{path} = { '=', $abs_path };
}

my $limit_clause = '';
if ($limit) {
  $limit_clause = sprintf(' LIMIT %d', $limit);
}

my $dbfile = $ENV{HOME} . "/cli.db";
my $dbh = App::CommandLog::get_dbh($dbfile);

my $sql = SQL::Abstract->new;
my ($query, @bind) = $sql->select(
  'commands',
  '*',
  \%where,
  {-desc => 'datetime'}
);

if ($debug) {
  say STDERR $query . $limit_clause;
  say STDERR Dumper(%where);
  say STDERR Dumper(@bind);
}

my $sth = $dbh->prepare($query . $limit_clause);
$sth->execute(@bind);

while (my $data = $sth->fetchrow_hashref()) {
  say join "\t", $data->{id}, $data->{datetime}, $data->{command};
}

$sth->execute();