hooks: add tag-modified

Add the tag-modified hook for notmuch and JMAP accounts.

References: https://todo.sr.ht/~rjarry/aerc/136
Changelog-added: New `tag-modified` hook for notmuch and JMAP accounts.
Signed-off-by: Bence Ferdinandy <bence@ferdinandy.com>
Acked-by: Robin Jarry <robin@jarry.cc>

5 files changed, 58 insertions, 2 deletions

diff --git a/app/account.go b/app/account.go
index 08ab6498..99739f01 100644
--- a/app/account.go
+++ b/app/account.go
@@ -282,6 +282,16 @@ func (acct *AccountView) newStore(name string) *lib.MessageStore {
 				msg := fmt.Sprintf("mail-added hook: %s", err)
 				PushError(msg)
 			}
+		}, func(add []string, remove []string) {
+			err := hooks.RunHook(&hooks.TagModified{
+				Account: acct.Name(),
+				Add:     add,
+				Remove:  remove,
+			})
+			if err != nil {
+				msg := fmt.Sprintf("tag-modified hook: %s", err)
+				PushError(msg)
+			}
 		},
 		acct.updateSplitView,
 		acct.dirlist.UiConfig(name).ThreadContext,
diff --git a/config/hooks.go b/config/hooks.go
index 4fc9482e..bd053e95 100644
--- a/config/hooks.go
+++ b/config/hooks.go
@@ -12,6 +12,7 @@ type HooksConfig struct {
 	MailDeleted  string `ini:"mail-deleted"`
 	MailAdded    string `ini:"mail-added"`
 	MailSent     string `ini:"mail-sent"`
+	TagModified  string `ini:"tag-modified"`
 }
 
 var Hooks HooksConfig
diff --git a/doc/aerc-config.5.scd b/doc/aerc-config.5.scd
index d457e0ab..3912b3da 100644
--- a/doc/aerc-config.5.scd
+++ b/doc/aerc-config.5.scd
@@ -1255,6 +1255,16 @@ They are configured in the *[hooks]* section of aerc.conf.
 
 	- *AERC_LIFETIME*
 
+*tag-modified* = _<command>_
+	Executed when notmuch tags are modified in a notmuch account. The list
+	of added and removed tags are passed as variables.
+
+	Variables:
+
+	- *AERC_ACCOUNT*
+	- *AERC_TAG_ADDED*
+	- *AERC_TAG_REMOVED*
+
 # TEMPLATES
 
 Template files are used to populate the body of an email. The *:compose*,
diff --git a/lib/hooks/tag-modified.go b/lib/hooks/tag-modified.go
new file mode 100644
index 00000000..44af9471
--- /dev/null
+++ b/lib/hooks/tag-modified.go
@@ -0,0 +1,27 @@
+package hooks
+
+import (
+	"fmt"
+
+	"git.sr.ht/~rjarry/aerc/config"
+)
+
+type TagModified struct {
+	Account string
+	Add     []string
+	Remove  []string
+}
+
+func (m *TagModified) Cmd() string {
+	return config.Hooks.TagModified
+}
+
+func (m *TagModified) Env() []string {
+	env := []string{
+		fmt.Sprintf("AERC_ACCOUNT=%s", m.Account),
+		fmt.Sprintf("AERC_TAG_ADDED=%v", m.Add),
+		fmt.Sprintf("AERC_TAG_REMOVED=%v", m.Remove),
+	}
+
+	return env
+}
diff --git a/lib/msgstore.go b/lib/msgstore.go
index d11d280e..a906d0cc 100644
--- a/lib/msgstore.go
+++ b/lib/msgstore.go
@@ -70,6 +70,7 @@ type MessageStore struct {
 	triggerDirectoryChange func()
 	triggerMailDeleted     func()
 	triggerMailAdded       func(string)
+	triggerTagModified     func([]string, []string)
 
 	threadBuilderDebounce *time.Timer
 	threadBuilderDelay    time.Duration
@@ -90,7 +91,8 @@ func NewMessageStore(worker *types.Worker,
 	reverseOrder bool, reverseThreadOrder bool, sortThreadSiblings bool,
 	triggerNewEmail func(*models.MessageInfo),
 	triggerDirectoryChange func(), triggerMailDeleted func(),
-	triggerMailAdded func(string), onSelect func(*models.MessageInfo),
+	triggerMailAdded func(string), triggerTagModified func([]string, []string),
+	onSelect func(*models.MessageInfo),
 	threadContext bool,
 ) *MessageStore {
 	if !worker.Backend.Capabilities().Thread {
@@ -129,6 +131,7 @@ func NewMessageStore(worker *types.Worker,
 		triggerDirectoryChange: triggerDirectoryChange,
 		triggerMailDeleted:     triggerMailDeleted,
 		triggerMailAdded:       triggerMailAdded,
+		triggerTagModified:     triggerTagModified,
 
 		threadBuilderDelay: clientThreadsDelay,
 
@@ -885,7 +888,12 @@ func (store *MessageStore) ModifyLabels(uids []uint32, add, remove []string,
 		Uids:   uids,
 		Add:    add,
 		Remove: remove,
-	}, cb)
+	}, func(msg types.WorkerMessage) {
+		if _, ok := msg.(*types.Done); ok {
+			store.triggerTagModified(add, remove)
+		}
+		cb(msg)
+	})
 }
 
 func (store *MessageStore) Sort(criteria []*types.SortCriterion, cb func(types.WorkerMessage)) {