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Dave Morriss
2024-06-04 16:35:44 +01:00
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Database/create_series Executable file
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#!/usr/bin/env perl
#===============================================================================
#
# FILE: create_series
#
# USAGE: ./create_series -name=NAME -description=DESC [-[no]private]
# [-image=IMAGE] [-[no]valid] [-[no]updatedb] [-config=FILE] [-help]
#
# DESCRIPTION: Create a new series in the HPR database
#
# OPTIONS: ---
# REQUIREMENTS: ---
# BUGS: ---
# NOTES: ---
# AUTHOR: Dave Morriss (djm), Dave.Morriss@gmail.com
# VERSION: 0.0.4
# CREATED: 2015-01-15 16:09:09
# REVISION: 2022-04-12 21:37:02
#
#===============================================================================
use 5.010;
use strict;
use warnings;
use utf8;
use Getopt::Long;
use Pod::Usage;
use Config::General;
use Try::Tiny;
use IO::Prompter;
use DBI;
use Data::Dumper;
#
# Version number (manually incremented)
#
our $VERSION = '0.0.4';
#
# Script and directory names
#
( my $PROG = $0 ) =~ s|.*/||mx;
( my $DIR = $0 ) =~ s|/?[^/]*$||mx;
$DIR = '.' unless $DIR;
#-------------------------------------------------------------------------------
# Declarations
#-------------------------------------------------------------------------------
#
# Constants and other declarations
#
my $basedir = "$ENV{HOME}/HPR/Database";
my $configfile = "$basedir/.hpr_db.cfg";
my ( $dbh, $sth1, $h1, $rv, $rc );
my ( $answer, $id );
#
# Enable Unicode mode
#
binmode STDOUT, ":encoding(UTF-8)";
binmode STDERR, ":encoding(UTF-8)";
#-------------------------------------------------------------------------------
# Options and arguments
#-------------------------------------------------------------------------------
#
# Process options
#
my %options;
Options( \%options );
#
# Default help
#
pod2usage( -msg => "$PROG version $VERSION\n", -exitval => 1 )
if ( $options{'help'} );
#
# Collect options
#
my $cfgfile
= ( defined( $options{config} ) ? $options{config} : $configfile );
my $updatedb = ( defined( $options{'updatedb'} ) ? $options{'updatedb'} : 0 );
my $name = $options{'name'};
my $description = $options{'description'};
my $private = ( defined( $options{'private'} ) ? $options{'private'} : 0 );
my $image = ( defined( $options{'image'} ) ? $options{'image'} : '' );
my $valid = ( defined( $options{'valid'} ) ? $options{'valid'} : 1 );
die "Options -name and -description are mandatory\n"
unless ( $name && $description );
#
# Sanity check
#
die "Unable to find $cfgfile\n" unless ( -e $cfgfile );
#
# Check we have the right values
#
printf "Planning to add the following series:\n" .
"Name: %s\n" .
"Description: %s\n" .
"Private: %s\n" .
"Image: '%s'\n" .
"Valid: %s\n",
$name,
$description,
( $private ? 'Yes' : 'No' ),
$image,
( $valid ? 'Yes' : 'No');
print "Note that -updatedb has not been set, so no changes will be made.\n"
unless ($updatedb);
#
# Ask for confirmation, failing gracefully if there's a problem
#
try {
$answer = prompt(
-in => *STDIN,
-out => *STDERR,
-prompt => 'Is this correct? ',
-style => 'red',
-yn
);
}
catch {
warn "Problem collecting answer $_";
$answer = 0;
};
unless ($answer) {
print "Exiting...\n";
exit;
}
#-------------------------------------------------------------------------------
# Configuration file - load data
#-------------------------------------------------------------------------------
my $conf = Config::General->new(
-ConfigFile => $cfgfile,
-InterPolateVars => 1,
-ExtendedAccess => 1
);
my %config = $conf->getall();
#-------------------------------------------------------------------------------
# Connect to the database
#-------------------------------------------------------------------------------
my $dbhost = $config{database}->{host} // '127.0.0.1';
my $dbport = $config{database}->{port} // 3306;
my $dbname = $config{database}->{name};
my $dbuser = $config{database}->{user};
my $dbpwd = $config{database}->{password};
# 2022-04-12 The MariaDB driver was there and then it wasn't!
#
#$dbh = DBI->connect( "DBI:MariaDB:database=$dbname;host=$dbhost;port=$dbport",
# $dbuser, $dbpwd, { AutoCommit => 1 } )
# or die $DBI::errstr;
$dbh = DBI->connect( "dbi:mysql:database=$dbname;host=$dbhost;port=$dbport",
$dbuser, $dbpwd, { AutoCommit => 1 } )
or die $DBI::errstr;
#
# Enable client-side UTF8
#
$dbh->{mysql_enable_utf8} = 1;
#
# Does a series with this name already exist?
#
$sth1 = $dbh->prepare(q{
SELECT id AS count FROM miniseries WHERE name = ?
});
$sth1->execute($name);
if ( $dbh->err ) {
warn $dbh->errstr;
}
if ( $h1 = $sth1->fetchrow_hashref ) {
print "A series with the name '$name' already exists\n";
exit;
}
#
# Should be OK to create the series if we get here, so long as we've been
# asked to do so.
#
if ($updatedb) {
#
# Go into transaction mode here so we can fail safely
#
$rc = $dbh->begin_work or die $dbh->errstr;
#
# Perform the INSERT
#
$rv = $dbh->do(q{
INSERT INTO miniseries (name,description,private,image,valid)
VALUES(?,?,?,?,?)
},
undef,
$name,
$description,
$private,
$image,
$valid
);
#
# Respond to any error by rolling back
#
if ( $dbh->err ) {
warn $dbh->errstr;
eval{ $dbh->rollback };
$rv = 0;
}
else {
$dbh->commit;
}
$rv = 0 if ( $rv eq '0E0' );
#
# Report any success
#
if ($rv) {
#
# Find out what id we just generated and report it if found
#
$id = $dbh->last_insert_id();
if ($id) {
print "Series added with id $id\n";
} else {
print "Series added\n";
}
}
else {
print "Series not added due to error\n";
}
} else {
print "Option -noupdatedb chosen, database not updated\n";
}
#
# We've finished with the database
#
$dbh->disconnect;
exit;
#=== FUNCTION ================================================================
# NAME: Options
# PURPOSE: Processes command-line options
# PARAMETERS: $optref Hash reference to hold the options
# RETURNS: Undef
# DESCRIPTION:
# THROWS: no exceptions
# COMMENTS: none
# SEE ALSO: n/a
#===============================================================================
sub Options {
my ($optref) = @_;
my @options = (
"help", "config=s", "updatedb!", "name=s",
"description=s", "private!", "image:s", "valid!"
);
if ( !GetOptions( $optref, @options ) ) {
pod2usage( -msg => "$PROG version $VERSION\n", -exitval => 1 );
}
return;
}
__END__
#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
# Application Documentation
#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
#{{{
=head1 NAME
create_series - create a new series in the 'miniseries' table in the HPR DB
=head1 VERSION
This documentation refers to create_series version 0.0.4
=head1 USAGE
create_series -name=NAME -description=DESC [-[no]private]
[-image=IMAGE] [-[no]valid] [-[no]updatedb] [-config=FILE] [-help]
desc="An overview of this open-source graphics program, "
desc+="with a focus on photographic issues."
create_series -update -name='GIMP' -description="$desc"
=head1 OPTIONS
=over 4
=item B<-[no]updatedb>
This option is required to make the script apply any changes that are made to
the database. By default no updates are applied (B<-noupdatedb>).
=item B<-name=NAME>
This mandatory option defines the title for the new series. The limit on the
length of the name is 100 characters and the script will reject anything
longer than this.
=item B<-description=DESC>
This mandatory option defines the description for the new series. There is no limit on the
length of this field, but it may be difficult to enter very large amounts of
text here. One solution might be to prepare the text in a file and use
a command substitution to enter it.
create_series -update -name='GIMP' -description="$(cat GIMP.txt)"
=item B<-[no]private>
Series can be private or public. Selecting B<-private> creates a new private
series, whereas B<-noprivate> creates a public series. The default is to
create a public one.
=item B<-image=IMAGE>
The image field in the database is not currently used. Three series have
a short text string in this field, but no data in the field seems to be used
anywhere. It would be possible to add data to this field in the database when
creating a series, and this option is available to do so, but by default
an empty string is inserted. Note that the database design does not allow this
field to be NULL for unknown reasons.
=item B<-[no]valid>
Series can be valid or invalid. Selecting B<-valid> creates a new valid
series, whereas B<-novalid> creates an invalid series. The default is to
create a valid one.
Series marked invalid are not displayed, but there are none in this state at
the moment.
=item B<-config=FILE>
This option allows an alternative configuration file to be used. This file
defines the location of the database, its port, its name and the username and
password to be used to access it. This feature was added to allow the script
to access alternative databases or the live database over an SSH tunnel.
See the CONFIGURATION AND ENVIRONMENT section below for the file format.
If the option is omitted the default file is used: B<.hpr_db.cfg>
=back
=head1 DESCRIPTION
The script collects the necessary attributes for a new series in the HPR
database, displays them for validation and if requested, adds them to the
database.
Every series must have a name and a description. The settings for I<private>,
I<image> and I<valid> have defaults as described above. The values and
defaults are shown as follows and the user is prompted to decide whether to
proceed with series creation or not:
Planning to add the following series:
Name: GIMP
Description: An overview of this open-source graphics program, with a focus on photographic issues.
Private: No
Image: ''
Valid: Yes
Is this correct?
Answering 'Y' to this prompt will result in creation (assuming this is
possible).
Upon creation the script reports the B<id> value assigned to the series. This
is useful to know when adding episodes to the series.
=head1 DIAGNOSTICS
=over 4
=item B<Options -name and -description are mandatory>
Both of these options must be present when creating a new series. This is
a fatal error.
=item B<DBI connect ... failed: Access denied for user ... >
The database connection has been denied. Check the configuration details (see
below). This a fatal error.
=back
=head1 CONFIGURATION AND ENVIRONMENT
The script obtains the credentials it requires to open the HPR database from
a configuration file. The name of the file it expects is B<.hpr_db.cfg> in the
directory holding the script. This configuration file can be overridden using
the B<-config=FILE> option as described above.
The configuration file format is as follows:
<database>
host = 127.0.0.1
port = PORT
name = DATABASE
user = USERNAME
password = PASSWORD
</database>
=head1 DEPENDENCIES
Config::General
DBI
Data::Dumper
Getopt::Long
IO::Prompter
Pod::Usage
Try::Tiny
=head1 BUGS AND LIMITATIONS
There are no known bugs in this module.
Please report problems to Dave Morriss (Dave.Morriss@gmail.com)
Patches are welcome.
=head1 AUTHOR
Dave Morriss (Dave.Morriss@gmail.com)
=head1 LICENCE AND COPYRIGHT
Copyright (c) 2015-2020 Dave Morriss (Dave.Morriss@gmail.com). All rights reserved.
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See perldoc perlartistic.
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.
=cut
#}}}
# [zo to open fold, zc to close]
# vim: syntax=perl:ts=8:sw=4:et:ai:tw=78:fo=tcrqn21:fdm=marker