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datatable.directory/app/Http/Controllers/TableController.php

357 lines
12 KiB

<?php
namespace App\Http\Controllers;
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use App\Models\Revision;
use App\Models\Table;
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use App\Models\User;
use App\Tables\Changeset;
use App\Tables\Column;
use App\Tables\ColumnNumerator;
use App\Tables\CStructArrayExporter;
use App\Tables\CsvExporter;
use App\Tables\CXMacroExporter;
use App\Tables\JsonExporter;
use App\Tables\PhpExporter;
use App\Tables\RowNumerator;
use Illuminate\Http\Request;
use Illuminate\Validation\Rule;
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use MightyPork\Exceptions\NotApplicableException;
use MightyPork\Utils\Utils;
class TableController extends Controller
{
public function view(Request $request, User $user, string $table)
{
$input = $this->validate($request, [
'rev' => 'nullable|int'
]);
/** @var Table $tableModel */
$tableModel = $user->tables()->withCount(['favourites', 'forks', 'revisions', 'comments', 'proposals'])
->where('name', $table)->first();
if ($tableModel === null) abort(404, "No such table.");
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// option to show other revisions
if ($input->has('rev')) {
$rev = (int)$input->rev;
$revision = $tableModel->revisions()->orderBy('created_at')->skip($rev - 1)->first();
if ($revision === null) abort(404, "No such revision");
} else {
$revision = $tableModel->revision;
}
$this->countTableVisit($request, $tableModel);
$columns = Column::columnsFromJson($revision->columns);
$rows = $revision->rowsData($columns)->paginate(25, []);
return view('table.view', [
'table' => $tableModel,
'revision' => $revision,
'columns' => $columns,
'rows' => $rows,
]);
}
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public function delete(Request $request, User $user, string $table)
{
/** @var Table $tableModel */
$tableModel = $user->tables()->where('name', $table)->first();
if ($tableModel === null) abort(404, "No such table.");
$this->authorize('delete', $tableModel);
if ($request->get('table-name', null) !== $table) {
return $this->backWithErrors(['table-name' => 'Fill table name']);
}
$tableModel->delete();
return redirect(route('profile.view', $user->name));
}
/**
* SHow a form for creating a new table
*
* @return \Illuminate\Http\Response
*/
public function create()
{
$exampleData =
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"Mercenaria mercenaria,hard clam,40\n" .
"Magallana gigas,pacific oyster,30\n" .
"Patella vulgata,common limpet,20";
$columns = Column::columnsFromJson([
// fake 'id' to satisfy the check in Column constructor
['name' => 'latin', 'type' => 'string', 'title' => 'Latin Name'],
['name' => 'common', 'type' => 'string', 'title' => 'Common Name'],
['name' => 'lifespan', 'type' => 'int', 'title' => 'Lifespan (years)']
]);
return view('table.create', [
'exampleColumns' => '',
'columns' => $columns,
'exampleData' => $exampleData,
]);
}
/**
* Show table settings edit form
*/
public function settings(Request $request, User $user, string $table)
{
/** @var Table $tableModel */
$tableModel = $user->tables()->where('name', $table)->first();
if ($tableModel === null) abort(404, "No such table.");
$this->authorize('edit', $tableModel);
return view('table.conf', [
'table' => $tableModel,
]);
}
/**
* Store modified table settings
*/
public function storeSettings(Request $request, User $user, string $table)
{
/** @var Table $tableModel */
$tableModel = $user->tables()->where('name', $table)->first();
if ($tableModel === null) abort(404, "No such table.");
$this->authorize('edit', $tableModel);
$input = $this->validate($request, [
'name' => [
'required',
VALI_NAME,
Rule::unique('tables')->ignoreModel($tableModel),
],
'title' => ['required', VALI_LINE],
'description' => ['nullable', VALI_TEXT],
'license' => ['nullable', VALI_TEXT],
'origin' => ['nullable', VALI_TEXT],
]);
$tableModel->fill($input->all());
$tableModel->save();
flash()->success('Table settings saved');
return redirect($tableModel->viewRoute); // the route now changed
}
public function storeNew(Request $request)
{
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/** @var User $u */
$u = \Auth::user();
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$input = $this->validate($request, [
'name' => [
'required',
VALI_NAME,
Rule::unique('tables'),
],
'title' => ['required', VALI_LINE],
'description' => ['nullable', VALI_TEXT],
'license' => ['nullable', VALI_TEXT],
'origin' => ['nullable', VALI_TEXT],
'columns' => 'required|json',
'data' => 'string|nullable',
]);
// Check if table name is unique for user
if ($u->hasTable($input->name)) {
return $this->backWithErrors([
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'name' => "A table called \"$input->name\" already exists in your account.",
]);
}
// --- COLUMNS ---
// Parse and validate the columns specification
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/** @var Column[] $columns */
$columns = [];
$col_names = []; // for checking duplicates
$colsArray = fromJSON($input->columns);
// prevent griefing via long list of columns
if (count($colsArray) > 100) return $this->backWithErrors(['columns' => "Too many columns"]);
foreach ($colsArray as $colObj) {
// ensure column has a title
if (!isset($colObj->title)) {
$colObj->title = $colObj->name;
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}
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try {
if (in_array($colObj->name, $col_names)) {
return $this->backWithErrors(['columns' => "Duplicate column: $colObj->name"]);
}
$col_names[] = $colObj->name;
$columns[] = new Column($colObj);
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} catch (\Exception $e) {
// validation errors from the Column constructor
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return $this->backWithErrors(['columns' => $e->getMessage()]);
}
}
if (count($columns) == 0) {
return $this->backWithErrors(['columns' => "Define at least one column"]);
}
// Now assign column IDs
$columnNumerator = new ColumnNumerator(count($columns));
foreach ($columns as $column) {
$column->setID($columnNumerator->next());
}
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// --- DATA ---
$dataCsvLines = array_map('str_getcsv', explode("\n", $input->data));
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// Preparing data to insert into the Rows table
$rowsToInsert = null;
$rowNumerator = null;
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try {
$rowsToInsert = collect($dataCsvLines)->map(function ($row) use ($columns) {
if (count($row) == 0 || count($row) == 1 && $row[0] == '') return null; // discard empty lines
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if (count($row) != count($columns)) {
throw new NotApplicableException("All rows must have " . count($columns) . " fields.");
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}
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$data = [];
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foreach ($row as $i => $val) {
$col = $columns[$i];
if (strlen($val) > 1000) {
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// try to stop people inserting unstructured crap / malformed CSV
throw new NotApplicableException("Value for column {$col->name} too long.");
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}
$data[$col->id] = $col->cast($val);
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}
// return in a format prepared for filling eloquent
return ['data' => $data];
})->filter()->all(); // remove nulls, to array
// attach _id labels to all rows
$rowNumerator = new RowNumerator(count($dataCsvLines));
foreach ($rowsToInsert as &$item) {
$item['data']['_id'] = $rowNumerator->next();
}
} catch (\Exception $e) {
return $this->backWithErrors(['data' => $e->getMessage()]);
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}
// --- STORE TO DB ---
/* Fields for the new Revision instance */
$revisionFields = [
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'note' => "Initial revision of table $u->name/$input->name",
'columns' => $columns,
'row_count' => count($rowsToInsert),
];
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/* Fields for the new Table instance */
$tableFields = [
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'owner_id' => $u->id,
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'name' => $input->name,
'title' => $input->title,
'description' => $input->description,
'license' => $input->license,
'origin' => $input->origin,
];
/** @var Table $table */
$table = null;
\DB::transaction(function () use ($revisionFields, $tableFields, $rowsToInsert, &$table) {
$revision = Revision::create($revisionFields);
$tableFields['revision_id'] = $revision->id; // current revision (not-null constraint on this FK)
$table = Table::create($tableFields);
// Attach the revision to the table, set as current
$table->revisions()->attach($revision);
$table->revision()->associate($revision);
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// Spawn rows, linked to the revision
$revision->rows()->createMany($rowsToInsert);
});
return redirect($table->viewRoute);
}
/**
* Check unique visit, filter bots / scripts, and increment visits count.
*
* @param Request $request
* @param Table $table
*/
private function countTableVisit(Request $request, Table $table)
{
$cookieName = "view_{$table->owner->name}_{$table->name}";
if (!$request->cookie($cookieName, false)) {
$ua = $request->userAgent();
// Filter out suspicious user agents
if (! str_contains(strtolower($ua), Controller::BOT_USER_AGENTS)) {
$table->countVisit();
\Cookie::queue($cookieName, true, 24*60); // in minutes
}
}
}
/**
* Simple export via a preset
*
* @param Request $request
* @param User $user
* @param string $table
*/
public function export(Request $request, User $user, string $table)
{
/** @var Table $tableModel */
$tableModel = $user->tables()->where('name', $table)->first();
if ($tableModel === null) abort(404, "No such table.");
$exporter = null;
switch ($request->get('format')) {
case 'json':
$exporter = new JsonExporter($tableModel);
break;
case 'csv':
$exporter = new CsvExporter($tableModel);
break;
case 'csv-tab':
$exporter = (new CsvExporter($tableModel))->withDelimiter("\t");
break;
case 'c':
$exporter = new CStructArrayExporter($tableModel);
break;
case 'xmacro':
$noq = explode(',', $request->input('noq',''));
$exporter = (new CXMacroExporter($tableModel))->noQuotesAround($noq);
break;
case 'php':
$exporter = new PhpExporter($tableModel);
break;
case 'js':
$exporter = (new JsonExporter($tableModel))->withJsWrapper();
break;
default:
abort(400, "Unspecified or unknown format.");
}
$dl = Utils::parseBool($request->get('dl', false));
$exporter->exportToBrowser($dl);
}
}