Feature/import schema (#70)

* remove empty trailing spaces * add a button to create schema on the relations page, aligned with flex * import an sql schema from copy/pasting * option to disable foreign key checks and drop existing tables * read a list of .sql files to import as a schema * wording
jan-vandenberg · Nov 25, 2023 · f04b336 · f04b336
1 parent 89d0b9a
commit f04b336
Show file tree

Hide file tree

Showing 4 changed files with 146 additions and 2 deletions.
diff --git a/.gitignore b/.gitignore
@@ -1 +1,3 @@
-core/app/
+core/app/
+schema/*
+!schema/.gitkeep
diff --git a/core/relations.php b/core/relations.php
@@ -246,7 +246,9 @@
 <hr>
 On this page you can add new or delete existing table relations i.e. foreign keys. Having foreign keys will result in Cruddiy forms with cascading deletes/updates and dropdown fields populated by foreign keys. If it is not clear what you want or need to do here, it is SAFER to skip this step and move to the next step! You can always come back later and regenerate new forms.
 <hr>
-<form method="post" action="tables.php">
+
+<form method="post" action="tables.php" class="d-flex justify-content-between">
+    <a href="schema.php" class="btn btn-secondary">Import Schema or Dump</a>
     <button type="submit" id="singlebutton" name="singlebutton" class="btn btn-success">Continue CRUD Creation Process</button>
 </form>
 </section>

diff --git a/core/schema.php b/core/schema.php
@@ -0,0 +1,140 @@
+<?php
+include "app/config.php";
+
+$errors = [];
+$schemaFiles = glob('../schema/*.sql');
+
+
+
+function extractTableNames($schema) {
+    $pattern = '/CREATE TABLE `?(\w+)`?/i';
+    preg_match_all($pattern, $schema, $matches);
+    return $matches[1] ?? [];
+}
+
+
+
+if(isset($_POST['submit'])){
+    $schemaFile = $_POST['schemaFile'] ?? '';
+    $schema = $schemaFile ? file_get_contents($schemaFile) : ($_POST['schema'] ?? '');
+
+    $deleteExisting = isset($_POST['deleteExisting']) ? true : false;
+
+    // Turn off default exception throwing
+    mysqli_report(MYSQLI_REPORT_OFF);
+
+    try {
+        // Delete existing tables from schema if checkbox is checked
+        if ($deleteExisting) {
+            $tablesToDelete = extractTableNames($schema);
+
+            mysqli_query($link, "SET FOREIGN_KEY_CHECKS=0;");
+            foreach ($tablesToDelete as $tableName) {
+                $dropTableSql = "DROP TABLE IF EXISTS `$tableName`;";
+                echo $dropTableSql;
+                mysqli_query($link, $dropTableSql);
+                if (!mysqli_query($link, $dropTableSql)) {
+                    $errors['schema'][] = "Something went wrong. Error description: " . mysqli_error($link);
+                }
+            }
+            mysqli_query($link, "SET FOREIGN_KEY_CHECKS=1;");
+        }
+
+        // Import new schema
+        if (mysqli_multi_query($link, $schema)) {
+            do {
+                // Store and then free the result set if there is one
+                if ($result = mysqli_store_result($link)) {
+                    mysqli_free_result($result);
+                }
+            } while (mysqli_more_results($link) && mysqli_next_result($link));
+        }
+    } catch (mysqli_sql_exception $e) {
+        // Catch and store the error
+        $errors['schema'][] = $e->getMessage();
+    }
+
+    // Check for any errors that occurred after the last executed query
+    if ($error = mysqli_error($link)) {
+        $errors['schema'][] = $error;
+    }
+
+    mysqli_close($link);
+
+    if (!isset($errors['schema'])) {
+        header('location:relations.php');
+        exit();
+    }
+}
+?>
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>CRUD generator</title>
+    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous">
+
+</head>
+<body class="bg-light">
+<section class="pt-5">
+    <div class="container bg-white shadow py-5">
+        <div class="row">
+            <div class="col-md-12 mx-auto">
+                <div class="text-center">
+                    <h4>Import schema</h4>
+
+                    <?php if (isset($errors['schema'])) : ?>
+                        <?php foreach ($errors['schema'] as $error) : ?>
+                            <div class="alert alert-danger my-3" role="alert">
+                                <?php echo $error ?>
+                            </div>
+                        <?php endforeach ?>
+                    <?php endif ?>
+
+
+                    <form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
+
+                        <!-- Dropdown for selecting a schema file -->
+                        <div class="form-group my-5">
+                            <label for="schemaFile">Select a <code>.sql</code> schema file:</label>
+                            <select class="form-control" name="schemaFile" id="schemaFile">
+                                <option value=""></option>
+                                <?php foreach ($schemaFiles as $file): ?>
+                                    <option value="<?php echo htmlspecialchars($file); ?>" <?php echo (isset($_POST['schemaFile']) && $_POST['schemaFile'] == $file) ? 'selected' : ''; ?>>
+                                        <?php echo htmlspecialchars(basename($file)); ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+                            <small id="schemaFile" class="form-text text-muted">
+                                Place your .sql files in the <code>schema/</code> folder in the project root.
+                            </small>
+                        </div>
+
+                        <!-- Textarea for manual schema copy/paste -->
+                        <div class="form-group my-5">
+                            <label for="schema">Or copy/paste schema here:</label>
+                            <textarea class="form-control" name="schema" id="schema" rows="3"><?php echo isset($_POST['schema']) ? htmlspecialchars($_POST['schema']) : '' ?></textarea>
+                        </div>
+
+                        <div class="form-check my-5">
+                            <input class="form-check-input" type="checkbox" value="1" id="deleteExisting" name="deleteExisting" <?php echo isset($_POST['deleteExisting']) ? 'checked="checked"' : '' ?>>
+                            <label class="form-check-label" for="deleteExisting">
+                                Disable foreign key checks and drop existing tables?
+                            </label>
+                        </div>
+                        <br>
+                        <button type="submit" class="btn btn-primary" name="submit">Import schema</button>
+                    </form>
+                </div>
+            </div>
+        </div>
+    </div>
+</section>
+<br>
+
+<script src="https://code.jquery.com/jquery-3.5.1.min.js" integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
+<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
+<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js" integrity="sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI" crossorigin="anonymous"></script>
+
+</body>
+</html>
diff --git a/schema/.gitkeep b/schema/.gitkeep