/**
* Take the module creator form input and apply changes
*
* @param array $input
* @param array $changeGroups
*
* @todo Break this up into smaller parts
*/
public function applyModuleChanges(array $input = array(), array $changeGroups = array())
{
// Initialize needed variables
$tableName = $input['table_name'];
// Module table name
$moduleId = $input['id'];
// Module ID
$moduleChangeset = ArrayLib::getKey(array_shift($changeGroups), 0);
// Get the module changeset
// Initialize the generator map array
$generatorMap = array('created_fields' => array(), 'deleted_fields' => array(), 'updated_fields' => array());
// Define artisan generator methods to be used with generator map keys
$generatorMethods = array('created_fields' => 'add', 'deleted_fields' => 'remove');
// If there's no module id, spawn a migration for creation of a new module
if (!$moduleId) {
MigrationGenerator::create($tableName);
sleep(1);
// Pause a second so succeeding migrations are named (ordered) properly
}
// Gather fields
foreach ($changeGroups as $groupType => $changesets) {
// Skip if we're dealing with updates
if ($groupType === 'updated_fields') {
continue;
}
foreach ($changesets as $changeset) {
// Skip if changeset is empty
if (!is_array($changeset['changes']) || empty($changeset['changes'])) {
continue;
}
// Retrieve the column type of a current changeset
$columnType = ArrayLib::getKey(ArrayLib::findByKeyValue($changeset['changes'], 'name', 'column_type') ?: array(), 'new');
// Retrieve the column name of a current changeset
$columnName = ArrayLib::getKey(ArrayLib::findByKeyValue($changeset['changes'], 'name', 'column_name') ?: array(), 'new');
$generatorMap[$groupType][$columnName] = $columnType;
}
}
// Generate migrations for new fields
foreach ($generatorMap as $key => $fields) {
// Check if a migration should be generated
if (array_key_exists($key, $generatorMethods) && !empty($fields)) {
// Bam!
MigrationGenerator::$generatorMethods[$key]($tableName, array_filter($fields, function ($value) {
return !empty($value);
}));
}
}
// Update model
if (!empty($moduleChangeset['changes'])) {
// Map of field => value entries
$changemap = [];
// Fill the changemap
foreach ($moduleChangeset['changes'] as $change) {
$changemap[$change['name']] = $change['new'];
}
// If module already exists, update it with new entries
if ($moduleChangeset['item_id']) {
\DB::table(\Orangehill\Photon\Module::getTableName())->where('table_name', $tableName)->update($changemap);
} else {
// Module doesn't exist yet, it should be created
// Create a new module based on an form input entry
$newModule = new Module($changemap);
// Generate a model file
$modelName = ucfirst(camel_case(str_singular($tableName)));
\Artisan::call('generate:model', array('modelName' => $modelName));
// Store the path to the model file
$pathToModel = app_path('models') . '/' . $modelName . '.php';
// Open the newly created file and make the model extend Baum's Node instead of Eloquent
$fileContent = file_get_contents($pathToModel);
$replaced = str_replace('extends \\Eloquent', 'extends Baum\\Node', $fileContent);
// Try to find a name of first added column, fallback to the id
$toStringField = 'id';
if (is_array($changeGroups['created_fields'])) {
$head = head($changeGroups['created_fields']);
if (is_array($head['changes'])) {
foreach ($head['changes'] as $fieldSegment) {
if ($fieldSegment['name'] == 'column_name') {
$toStringField = $fieldSegment['new'];
}
}
}
}
// Create a __toString method stub
$toStringStub = StubFactory::make('ModelToStringMethod', array('field' => $toStringField))->append("\n}")->get();
// Add the method to the model files
$replaced = substr_replace($replaced, $toStringStub, strrpos($replaced, '}'));
file_put_contents($pathToModel, $replaced);
// Save a model and update the module id
$newModule->save();
$moduleId = $newModule->id;
}
}
// Add newborn fields
foreach ($changeGroups['created_fields'] as $field) {
$fieldData = array('module_id' => $moduleId);
foreach ($field['changes'] as $element) {
$fieldData[$element['name']] = $element['new'];
}
$field = FieldCreator::make($fieldData);
$field->save();
}
// Update fields
foreach ($changeGroups['updated_fields'] as $field) {
$fieldData = array();
foreach ($field['changes'] as $element) {
$fieldData[$element['name']] = $element['new'];
}
\DB::table(Field::getTableName())->where('id', $field['item_id'])->update($fieldData);
}
// Delete fields
$deletedFieldIds = array_fetch($changeGroups['deleted_fields'], 'item_id') + array(0);
$moduleFields = Field::whereIn('id', $deletedFieldIds)->get();
foreach ($moduleFields as $moduleField) {
FieldFactory::make($moduleField)->uninstall();
}
foreach ($changeGroups['deleted_fields'] as $field) {
\DB::table(Field::getTableName())->where('id', $field['item_id'])->delete();
}
}