Add preview card support

internal/gtsmodel/card.go

@@ -0,0 +1,68 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+// Package gtsmodel contains types used *internally* by GoToSocial and added/removed/selected from the database.
+// These types should never be serialized and/or sent out via public APIs, as they contain sensitive information.
+// The annotation used on these structs is for handling them via the bun-db ORM.
+// See here for more info on bun model annotations: https://bun.uptrace.dev/guide/models.html
+package gtsmodel
+
+type Card struct {
+	ID string `bun:"type:CHAR(26),pk,nullzero,notnull,unique"` // Unique identity string.
+	// Location of linked resource.
+	// example: https://buzzfeed.com/some/fuckin/buzzfeed/article
+	URL string `bun:",nullzero"`
+	// Title of linked resource.
+	// example: Buzzfeed - Is Water Wet?
+	Title string `bun:",nullzero"`
+	// Description of preview.
+	// example: Is water wet? We're not sure. In this article, we ask an expert...
+	Description string `bun:",nullzero"`
+	// The type of the preview card.
+	// enum:
+	// - link
+	// - photo
+	// - video
+	// - rich
+	// example: link
+	Type string `bun:",nullzero"`
+	// The author of the original resource.
+	// example: weewee@buzzfeed.com
+	AuthorName string `bun:"author_name,nullzero"`
+	// A link to the author of the original resource.
+	// example: https://buzzfeed.com/authors/weewee
+	AuthorURL string `bun:"author_url,nullzero"`
+	// The provider of the original resource.
+	// example: Buzzfeed
+	ProviderName string `bun:"provider_name,nullzero"`
+	// A link to the provider of the original resource.
+	// example: https://buzzfeed.com
+	ProviderURL string `bun:"provider_url,nullzero"`
+	// HTML to be used for generating the preview card.
+	HTML string `bun:",nullzero"`
+	// Width of preview, in pixels.
+	Width int `bun:",nullzero"`
+	// Height of preview, in pixels.
+	Height int `bun:",nullzero"`
+	// Preview thumbnail.
+	// example: https://example.org/fileserver/preview/thumb.jpg
+	Image string `bun:",nullzero"`
+	// Used for photo embeds, instead of custom html.
+	EmbedURL string `bun:",nullzero"`
+	// A hash computed by the BlurHash algorithm, for generating colorful preview thumbnails when media has not been downloaded yet.
+	Blurhash string `bun:",nullzero"`
+}