Markdown Statuses (#116)

* parse markdown statuses if desired

* add some preliminary docs for writing posts

internal/text/formatter.go

@@ -0,0 +1,49 @@
+/*
+   GoToSocial
+   Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
+
+   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 text
+
+import (
+	"github.com/sirupsen/logrus"
+	"github.com/superseriousbusiness/gotosocial/internal/config"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
+
+// Formatter wraps some logic and functions for parsing statuses and other text input into nice html.
+type Formatter interface {
+	// FromMarkdown parses an HTML text from a markdown-formatted text.
+	FromMarkdown(md string, mentions []*gtsmodel.Mention, tags []*gtsmodel.Tag) string
+	// FromPlain parses an HTML text from a plaintext.
+	FromPlain(plain string, mentions []*gtsmodel.Mention, tags []*gtsmodel.Tag) string
+}
+
+type formatter struct {
+	cfg *config.Config
+	db  db.DB
+	log *logrus.Logger
+}
+
+// NewFormatter returns a new Formatter interface for parsing statuses and other text input into nice html.
+func NewFormatter(cfg *config.Config, db db.DB, log *logrus.Logger) Formatter {
+	return &formatter{
+		cfg: cfg,
+		db:  db,
+		log: log,
+	}
+}