1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
<?php
declare(strict_types=1);
namespace Engelsystem\Migrations;
use Carbon\Carbon;
use Engelsystem\Database\Migration\Migration;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Database\Schema\Blueprint;
use stdClass;
/**
* This migration creates the "messages" table and copies the existing "Messages" table records to the new one.
*/
class CreateMessagesTable extends Migration
{
use ChangesReferences;
use Reference;
/**
* Creates the "messages" table, copies the data and drops the "Message" table.
*/
public function up(): void
{
$hasPreviousMessagesTable = $this->schema->hasTable('Messages');
if ($hasPreviousMessagesTable) {
// Rename because some SQL DBMS handle identifiers case insensitive
$this->schema->rename('Messages', 'PreviousMessages');
}
$this->createNewMessagesTable();
if ($hasPreviousMessagesTable) {
$this->copyPreviousToNewMessagesTable();
$this->changeReferences(
'PreviousMessages',
'ID',
'messages',
'id',
'unsignedInteger'
);
$this->schema->drop('PreviousMessages');
}
}
/**
* Recreates the previous "Messages" table, copies back the data and drops the new "messages" table.
*/
public function down(): void
{
// Rename as some SQL DBMS handle identifiers case insensitive
$this->schema->rename('messages', 'new_messages');
$this->createPreviousMessagesTable();
$this->copyNewToPreviousMessagesTable();
$this->changeReferences(
'new_messages',
'id',
'Messages',
'ID',
'unsignedInteger'
);
$this->schema->drop('new_messages');
}
/**
* @return void
*/
private function createNewMessagesTable(): void
{
$this->schema->create(
'messages',
function (Blueprint $table) {
$table->increments('id');
$this->referencesUser($table);
$this->references($table, 'users', 'receiver_id');
$table->boolean('read')->default(0);
$table->text('text');
$table->timestamps();
}
);
}
/**
* @return void
*/
private function copyPreviousToNewMessagesTable(): void
{
$connection = $this->schema->getConnection();
/** @var stdClass[] $previousMessageRecords */
$previousMessageRecords = $connection
->table('PreviousMessages')
->get();
foreach ($previousMessageRecords as $previousMessage) {
$date = Carbon::createFromTimestamp($previousMessage->Datum);
$connection->table('messages')->insert(
[
'id' => $previousMessage->id,
'user_id' => $previousMessage->SUID,
'receiver_id' => $previousMessage->RUID,
'read' => $previousMessage->isRead === 'N' ? 0 : 1,
'text' => $previousMessage->Text,
'created_at' => $date,
'updated_at' => $date,
]
);
}
}
/**
* @return void
*/
private function createPreviousMessagesTable(): void
{
$this->schema->create(
'Messages',
function (Blueprint $table) {
$table->increments('id');
$table->integer('Datum');
$this->references($table, 'users', 'SUID');
$this->references($table, 'users', 'RUID');
$table->char('isRead')
->default('N');
$table->text('Text');
}
);
}
/**
* @return void
*/
private function copyNewToPreviousMessagesTable(): void
{
$connection = $this->schema->getConnection();
/** @var Collection|stdClass[] $messageRecords */
$messageRecords = $connection
->table('new_messages')
->get();
foreach ($messageRecords as $messageRecord) {
$date = Carbon::createFromFormat('Y-m-d H:i:s', $messageRecord->created_at)
->getTimestamp();
$connection->table('Messages')->insert(
[
'id' => $messageRecord->id,
'Datum' => $date,
'SUID' => $messageRecord->user_id,
'RUID' => $messageRecord->receiver_id,
'isRead' => $messageRecord->read === 0 ? 'N' : 'Y',
'Text' => $messageRecord->text,
]
);
}
}
}
|
