First pass at centralized database reference. Closes #282 (#289)

* First pass at centralized database reference. Closes #282

* Add verbose logging option to launch.json

* Clear current broadcaster on stream end. Closes #285

* Fix typo in verbose launch args

* Add support for purging tailwind styles. For #224

* Don't need to pass db as param since it is stored

* Commit updated Javascript packages

Co-authored-by: Owncast <owncast@owncast.online>

core/data/data.go

@@ -0,0 +1,37 @@
+// This is a centralized place to connect to the database, and hold a reference to it.
+// Other packages can share this reference.  This package would also be a place to add any kind of
+// persistence-related convenience methods or migrations.
+
+package data
+
+import (
+	"database/sql"
+	"os"
+
+	"github.com/owncast/owncast/config"
+	"github.com/owncast/owncast/utils"
+	log "github.com/sirupsen/logrus"
+)
+
+var _db *sql.DB
+
+func GetDatabase() *sql.DB {
+	return _db
+}
+
+func SetupPersistence() {
+	file := config.Config.DatabaseFilePath
+
+	// Create empty DB file if it doesn't exist.
+	if !utils.DoesFileExists(file) {
+		log.Traceln("Creating new database at", file)
+
+		_, err := os.Create(file)
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+	}
+
+	sqliteDatabase, _ := sql.Open("sqlite3", file)
+	_db = sqliteDatabase
+}