303 lines
		
	
	
		
			9.6 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			303 lines
		
	
	
		
			9.6 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php declare(strict_types=1);
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class BulkActionException extends SCoreException
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{
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}
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class BulkActionBlockBuildingEvent extends Event
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{
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    public array $actions = [];
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    public array $search_terms = [];
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    public function add_action(String $action, string $button_text, string $access_key = null, String $confirmation_message = "", String $block = "", int $position = 40)
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    {
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        if ($block == null) {
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            $block = "";
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        }
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        if (!empty($access_key)) {
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            assert(strlen($access_key)==1);
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            foreach ($this->actions as $existing) {
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                if ($existing["access_key"]==$access_key) {
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                    throw new SCoreException("Access key $access_key is already in use");
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                }
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            }
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        }
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        $this->actions[] =[
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                "block" => $block,
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                "access_key" => $access_key,
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                "confirmation_message" => $confirmation_message,
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                "action" => $action,
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                "button_text" => $button_text,
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                "position" => $position
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            ];
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    }
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}
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class BulkActionEvent extends Event
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{
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    public string $action;
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    public Generator $items;
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    public bool $redirect = true;
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    public function __construct(String $action, Generator $items)
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    {
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        parent::__construct();
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        $this->action = $action;
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        $this->items = $items;
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    }
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}
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class BulkActions extends Extension
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{
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    /** @var BulkActionsTheme */
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    protected ?Themelet $theme;
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    public function onPostListBuilding(PostListBuildingEvent $event)
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    {
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        global $page, $user;
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        if ($user->is_logged_in()) {
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            $babbe = new BulkActionBlockBuildingEvent();
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            $babbe->search_terms = $event->search_terms;
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            send_event($babbe);
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            if (sizeof($babbe->actions) == 0) {
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                return;
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            }
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            usort($babbe->actions, [$this, "sort_blocks"]);
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            $this->theme->display_selector($page, $babbe->actions, Tag::implode($event->search_terms));
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        }
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    }
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    public function onBulkActionBlockBuilding(BulkActionBlockBuildingEvent $event)
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    {
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        global $user;
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        if ($user->can(Permissions::DELETE_IMAGE)) {
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            $event->add_action("bulk_delete", "(D)elete", "d", "Delete selected images?", $this->theme->render_ban_reason_input(), 10);
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        }
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        if ($user->can(Permissions::BULK_EDIT_IMAGE_TAG)) {
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            $event->add_action(
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                "bulk_tag",
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                "Tag",
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                "t",
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                "",
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                $this->theme->render_tag_input(),
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                10
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            );
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        }
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        if ($user->can(Permissions::BULK_EDIT_IMAGE_SOURCE)) {
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            $event->add_action("bulk_source", "Set (S)ource", "s", "", $this->theme->render_source_input(), 10);
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        }
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    }
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    public function onCommand(CommandEvent $event)
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    {
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        if ($event->cmd == "help") {
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            print "\tbulk-action <action> <query>\n";
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            print "\t\tperform an action on all query results\n\n";
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        }
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        if ($event->cmd == "bulk-action") {
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            if (count($event->args) < 2) {
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                return;
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            }
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            $action = $event->args[0];
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            $query = $event->args[1];
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            $items = $this->yield_search_results($query);
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            log_info("bulk_actions", "Performing $action on {$event->args[1]}");
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            send_event(new BulkActionEvent($event->args[0], $items));
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        }
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    }
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    public function onBulkAction(BulkActionEvent $event)
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    {
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        global $page, $user;
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        switch ($event->action) {
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            case "bulk_delete":
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                if ($user->can(Permissions::DELETE_IMAGE)) {
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                    $i = $this->delete_posts($event->items);
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                    $page->flash("Deleted $i[0] items, totaling ".human_filesize($i[1]));
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                }
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                break;
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            case "bulk_tag":
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                if (!isset($_POST['bulk_tags'])) {
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                    return;
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                }
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                if ($user->can(Permissions::BULK_EDIT_IMAGE_TAG)) {
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                    $tags = $_POST['bulk_tags'];
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                    $replace = false;
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                    if (isset($_POST['bulk_tags_replace']) &&  $_POST['bulk_tags_replace'] == "true") {
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                        $replace = true;
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                    }
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                    $i= $this->tag_items($event->items, $tags, $replace);
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                    $page->flash("Tagged $i items");
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                }
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                break;
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            case "bulk_source":
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                if (!isset($_POST['bulk_source'])) {
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                    return;
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                }
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                if ($user->can(Permissions::BULK_EDIT_IMAGE_SOURCE)) {
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                    $source = $_POST['bulk_source'];
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                    $i = $this->set_source($event->items, $source);
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                    $page->flash("Set source for $i items");
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                }
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                break;
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        }
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    }
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    public function onPageRequest(PageRequestEvent $event)
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    {
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        global $page, $user;
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        if ($event->page_matches("bulk_action") && $user->can(Permissions::PERFORM_BULK_ACTIONS)) {
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            if (!isset($_POST['bulk_action'])) {
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                return;
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            }
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            $action = $_POST['bulk_action'];
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            try {
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                $items = null;
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                if (isset($_POST['bulk_selected_ids']) && !empty($_POST['bulk_selected_ids'])) {
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                    $data = json_decode($_POST['bulk_selected_ids']);
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                    if (empty($data)) {
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                        throw new BulkActionException("No ids specified in bulk_selected_ids");
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                    }
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                    if (is_array($data) && !empty($data)) {
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                        $items = $this->yield_items($data);
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                    }
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                } elseif (isset($_POST['bulk_query']) && $_POST['bulk_query'] != "") {
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                    $query = $_POST['bulk_query'];
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                    if ($query != null && $query != "") {
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                        $items = $this->yield_search_results($query);
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                    }
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                } else {
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                    throw new BulkActionException("No ids selected and no query present, cannot perform bulk operation on entire collection");
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                }
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                $bae = new BulkActionEvent($action, $items);
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                if (is_iterable($items)) {
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                    send_event($bae);
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                }
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                if ($bae->redirect) {
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                    $page->set_mode(PageMode::REDIRECT);
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                    $page->set_redirect(referer_or(make_link()));
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                }
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            } catch (BulkActionException $e) {
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                log_error(BulkActionsInfo::KEY, $e->getMessage(), $e->getMessage());
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            }
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        }
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    }
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    private function yield_items(array $data): Generator
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    {
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        foreach ($data as $id) {
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            if (is_numeric($id)) {
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                $image = Image::by_id($id);
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                if ($image!=null) {
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                    yield $image;
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                }
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            }
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        }
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    }
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    private function yield_search_results(string $query): Generator
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    {
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        $tags = Tag::explode($query);
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        return Image::find_images_iterable(0, null, $tags);
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    }
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    private function sort_blocks($a, $b)
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    {
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        return $a["position"] - $b["position"];
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    }
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    private function delete_posts(iterable $posts): array
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    {
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        global $page;
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        $total = 0;
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        $size = 0;
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        foreach ($posts as $post) {
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            try {
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                if (class_exists("ImageBan") && isset($_POST['bulk_ban_reason'])) {
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                    $reason = $_POST['bulk_ban_reason'];
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                    if ($reason) {
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                        send_event(new AddImageHashBanEvent($post->hash, $reason));
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                    }
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                }
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                send_event(new ImageDeletionEvent($post));
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                $total++;
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                $size += $post->filesize;
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            } catch (Exception $e) {
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                $page->flash("Error while removing {$post->id}: " . $e->getMessage());
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            }
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        }
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        return [$total, $size];
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    }
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    private function tag_items(iterable $items, string $tags, bool $replace): int
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    {
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        $tags = Tag::explode($tags);
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        $pos_tag_array = [];
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        $neg_tag_array = [];
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        foreach ($tags as $new_tag) {
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            if (str_starts_with($new_tag, '-')) {
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                $neg_tag_array[] = substr($new_tag, 1);
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            } else {
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                $pos_tag_array[] = $new_tag;
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            }
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        }
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        $total = 0;
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        if ($replace) {
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            foreach ($items as $image) {
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                send_event(new TagSetEvent($image, $tags));
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                $total++;
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            }
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        } else {
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            foreach ($items as $image) {
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                $img_tags = array_map("strtolower", $image->get_tag_array());
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                if (!empty($neg_tag_array)) {
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                    $neg_tag_array = array_map("strtolower", $neg_tag_array);
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                    $img_tags = array_merge($pos_tag_array, $img_tags);
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                    $img_tags = array_diff($img_tags, $neg_tag_array);
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                } else {
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                    $img_tags = array_merge($tags, $img_tags);
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                }
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                send_event(new TagSetEvent($image, $img_tags));
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                $total++;
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            }
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        }
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        return $total;
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    }
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    private function set_source(iterable $items, String $source): int
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    {
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        global $page;
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        $total = 0;
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        foreach ($items as $image) {
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            try {
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                send_event(new SourceSetEvent($image, $source));
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                $total++;
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            } catch (Exception $e) {
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                $page->flash("Error while setting source for {$image->id}: " . $e->getMessage());
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            }
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        }
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        return $total;
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    }
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}
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