notmuch: add notmuch bindings

aerc is using an unmaintained fork of a not-well-functioning notmuch
binding library. Add custom bindings directly into the aerc repo to make
them more maintainable and more customizable to our needs.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>

1 files changed, 99 insertions, 0 deletions

diff --git a/lib/notmuch/thread.go b/lib/notmuch/thread.go
new file mode 100644
index 00000000..1b6eacef
--- /dev/null
+++ b/lib/notmuch/thread.go
@@ -0,0 +1,99 @@
+//go:build notmuch
+// +build notmuch
+
+package notmuch
+
+/*
+#cgo LDFLAGS: -lnotmuch
+
+#include <stdlib.h>
+#include <notmuch.h>
+
+*/
+import "C"
+import "time"
+
+type Thread struct {
+	thread *C.notmuch_thread_t
+}
+
+// ID returns the thread ID
+func (t *Thread) ID() string {
+	cID := C.notmuch_thread_get_thread_id(t.thread)
+	return C.GoString(cID)
+}
+
+// TotalMessages returns the total number of messages in the thread
+func (t *Thread) TotalMessages() int {
+	return int(C.notmuch_thread_get_total_messages(t.thread))
+}
+
+// TotalMessages returns the total number of files in the thread
+func (t *Thread) TotalFiles() int {
+	return int(C.notmuch_thread_get_total_files(t.thread))
+}
+
+// TopLevelMessages returns an iterator over the top level messages in the
+// thread. Messages are sorted oldest-first
+func (t *Thread) TopLevelMessages() Messages {
+	cMessages := C.notmuch_thread_get_toplevel_messages(t.thread)
+	return Messages{
+		messages: cMessages,
+	}
+}
+
+// Messages returns an iterator over the messages in the thread. Messages are
+// sorted oldest-first
+func (t *Thread) Messages() Messages {
+	cMessages := C.notmuch_thread_get_messages(t.thread)
+	return Messages{
+		messages: cMessages,
+	}
+}
+
+// Matches returns the number of messages in the thread that matched the query
+func (t *Thread) Matches() int {
+	return int(C.notmuch_thread_get_matched_messages(t.thread))
+}
+
+// Returns a string of authors of the thread
+func (t *Thread) Authors() string {
+	cAuthors := C.notmuch_thread_get_authors(t.thread)
+	return C.GoString(cAuthors)
+}
+
+// Returns the subject of the thread
+func (t *Thread) Subject() string {
+	cSubject := C.notmuch_thread_get_subject(t.thread)
+	return C.GoString(cSubject)
+}
+
+// Returns the sent-date of the oldest message in the thread
+func (t *Thread) OldestDate() time.Time {
+	cTime := C.notmuch_thread_get_oldest_date(t.thread)
+	return time.Unix(int64(cTime), 0)
+}
+
+// Returns the sent-date of the newest message in the thread
+func (t *Thread) NewestDate() time.Time {
+	cTime := C.notmuch_thread_get_newest_date(t.thread)
+	return time.Unix(int64(cTime), 0)
+}
+
+// Tags returns a slice of all tags in the thread
+func (t *Thread) Tags() []string {
+	cTags := C.notmuch_thread_get_tags(t.thread)
+	defer C.notmuch_tags_destroy(cTags)
+
+	tags := []string{}
+	for C.notmuch_tags_valid(cTags) > 0 {
+		tag := C.notmuch_tags_get(cTags)
+		tags = append(tags, C.GoString(tag))
+		C.notmuch_tags_move_to_next(cTags)
+	}
+	return tags
+}
+
+func (t *Thread) Close() {
+	C.notmuch_thread_destroy(t.thread)
+}