Timeline manager (#40)

* start messing about with timeline manager

* i have no idea what i'm doing

* i continue to not know what i'm doing

* it's coming along

* bit more progress

* update timeline with new posts as they come in

* lint and fmt

* Select accounts where empty string

* restructure a bunch, get unfaves working

* moving stuff around

* federate status deletes properly

* mention regex better but not 100% there

* fix regex

* some more hacking away at the timeline code phew

* fix up some little things

* i can't even

* more timeline stuff

* move to ulid

* fiddley

* some lil fixes for kibou compatibility

* timelines working pretty alright!

* tidy + lint

internal/api/security/useragentblock.go

@@ -23,20 +23,24 @@ import (
 	"strings"
 
 	"github.com/gin-gonic/gin"
+	"github.com/sirupsen/logrus"
 )
 
-// UserAgentBlock is a middleware that prevents google chrome cohort tracking by
-// writing the Permissions-Policy header after all other parts of the request have been completed.
-// See: https://plausible.io/blog/google-floc
+// UserAgentBlock blocks requests with undesired, empty, or invalid user-agent strings.
 func (m *Module) UserAgentBlock(c *gin.Context) {
+	l := m.log.WithFields(logrus.Fields{
+		"func": "UserAgentBlock",
+	})
 
 	ua := c.Request.UserAgent()
 	if ua == "" {
+		l.Debug("aborting request because there's no user-agent set")
 		c.AbortWithStatus(http.StatusTeapot)
 		return
 	}
 
-	if strings.Contains(strings.ToLower(c.Request.UserAgent()), strings.ToLower("friendica")) {
+	if strings.Contains(strings.ToLower(ua), strings.ToLower("friendica")) {
+		l.Debugf("aborting request with user-agent %s because it contains 'friendica'", ua)
 		c.AbortWithStatus(http.StatusTeapot)
 		return
 	}