80 lines
1.5 KiB
Perl
80 lines
1.5 KiB
Perl
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#!/usr/bin/env perl
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use strict;
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use warnings;
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use 5.020;
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use DBI;
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my $dbname = $ENV{TRAVELYNX_DB_FILE} // 'travelynx.sqlite';
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my $dbh = DBI->connect( "dbi:SQLite:dbname=${dbname}", q{}, q{} );
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my $has_version_query = $dbh->prepare(qq{
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select name from sqlite_master
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where type = 'table' and name = 'schema_version';
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});
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sub get_schema_version {
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$has_version_query->execute();
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my $rows = $has_version_query->fetchall_arrayref;
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if (@{$rows} == 1) {
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my $get_version_query = $dbh->prepare(qq{
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select version from schema_version;
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});
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$get_version_query->execute();
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my $rows = $get_version_query->fetchall_arrayref;
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if (@{$rows} == 0) {
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return -1;
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}
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return $rows->[0][0];
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}
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return 0;
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}
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my @migrations = (
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# v0 -> v1
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sub {
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$dbh->do(qq{
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begin transaction;
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});
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$dbh->do(qq{
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create table schema_version (
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version integer primary key
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);
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});
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$dbh->do(qq{
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insert into schema_version (version) values (1);
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});
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$dbh->do(qq{
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create table new_users (
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id integer primary key,
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name char(64) not null unique,
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status int not null,
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email char(256),
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password text,
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registered_at datetime,
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last_login datetime
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);
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});
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my $get_users_query = $dbh->prepare(qq{
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select * from users;
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});
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$dbh->do(qq{
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commit;
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});
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},
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);
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my $schema_version = get_schema_version();
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say "Found travelynx schema v${schema_version}";
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if ($schema_version == @migrations) {
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say "Database schema is up-to-date";
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}
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for my $i ($schema_version .. $#migrations) {
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printf("Updating to v%d\n", $i + 1);
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$migrations[$i]();
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}
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