3 files changed, 50 insertions, 0 deletions
diff --git a/worker/jmap/cache/gob.go b/worker/jmap/cache/gob.go
index f1b8be33..8b153c50 100644
--- a/worker/jmap/cache/gob.go
+++ b/worker/jmap/cache/gob.go
@@ -6,10 +6,12 @@ import (
 
 	"git.sr.ht/~rockorager/go-jmap/mail/email"
 	"git.sr.ht/~rockorager/go-jmap/mail/mailbox"
+	"git.sr.ht/~rockorager/go-jmap/mail/thread"
 )
 
 type jmapObject interface {
 	*email.Email |
+		*thread.Thread |
 		*email.QueryResponse |
 		*mailbox.Mailbox |
 		*FolderContents |
diff --git a/worker/jmap/cache/state.go b/worker/jmap/cache/state.go
index 5fec5034..6538ccad 100644
--- a/worker/jmap/cache/state.go
+++ b/worker/jmap/cache/state.go
@@ -12,6 +12,18 @@ func (c *JMAPCache) PutMailboxState(state string) error {
 	return c.put(mailboxStateKey, []byte(state))
 }
 
+func (c *JMAPCache) GetThreadState() (string, error) {
+	buf, err := c.get(threadStateKey)
+	if err != nil {
+		return "", err
+	}
+	return string(buf), nil
+}
+
+func (c *JMAPCache) PutThreadState(state string) error {
+	return c.put(threadStateKey, []byte(state))
+}
+
 func (c *JMAPCache) GetEmailState() (string, error) {
 	buf, err := c.get(emailStateKey)
 	if err != nil {
@@ -27,4 +39,5 @@ func (c *JMAPCache) PutEmailState(state string) error {
 const (
 	mailboxStateKey = "state/mailbox"
 	emailStateKey   = "state/email"
+	threadStateKey  = "state/thread"
 )
diff --git a/worker/jmap/cache/thread.go b/worker/jmap/cache/thread.go
new file mode 100644
index 00000000..ca91a4d9
--- /dev/null
+++ b/worker/jmap/cache/thread.go
@@ -0,0 +1,35 @@
+package cache
+
+import (
+	"git.sr.ht/~rockorager/go-jmap"
+	"git.sr.ht/~rockorager/go-jmap/mail/thread"
+)
+
+func (c *JMAPCache) GetThread(id jmap.ID) (*thread.Thread, error) {
+	buf, err := c.get(threadKey(id))
+	if err != nil {
+		return nil, err
+	}
+	e := new(thread.Thread)
+	err = unmarshal(buf, e)
+	if err != nil {
+		return nil, err
+	}
+	return e, nil
+}
+
+func (c *JMAPCache) PutThread(id jmap.ID, e *thread.Thread) error {
+	buf, err := marshal(e)
+	if err != nil {
+		return err
+	}
+	return c.put(threadKey(id), buf)
+}
+
+func (c *JMAPCache) DeleteThread(id jmap.ID) error {
+	return c.delete(threadKey(id))
+}
+
+func threadKey(id jmap.ID) string {
+	return "thread/" + string(id)
+}