From 3a3959c79c2387adb13ea2c15d7d9dfe2f8ddfb3 Mon Sep 17 00:00:00 2001
From: Knut Ahlers <knut@ahlers.me>
Date: Sun, 27 Dec 2020 14:42:51 +0100
Subject: [PATCH] Add delete action for single message

Signed-off-by: Knut Ahlers <knut@ahlers.me>
---
 action_delete.go | 32 ++++++++++++++++++++++++++++++++
 config.go        | 11 ++++++-----
 wiki/Home.md     |  3 +++
 3 files changed, 41 insertions(+), 5 deletions(-)
 create mode 100644 action_delete.go

diff --git a/action_delete.go b/action_delete.go
new file mode 100644
index 0000000..3cb99f5
--- /dev/null
+++ b/action_delete.go
@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/go-irc/irc"
+	"github.com/pkg/errors"
+)
+
+func init() {
+	registerAction(func(c *irc.Client, m *irc.Message, ruleDef *rule, r *ruleAction) error {
+		if r.DeleteMessage == nil || !*r.DeleteMessage {
+			return nil
+		}
+
+		msgID, ok := m.Tags.GetTag("id")
+		if !ok || msgID == "" {
+			return nil
+		}
+
+		return errors.Wrap(
+			c.WriteMessage(&irc.Message{
+				Command: "PRIVMSG",
+				Params: []string{
+					m.Params[0],
+					fmt.Sprintf("/delete %s", msgID),
+				},
+			}),
+			"sending delete",
+		)
+	})
+}
diff --git a/config.go b/config.go
index df9fe26..604a95c 100644
--- a/config.go
+++ b/config.go
@@ -169,11 +169,12 @@ func (r *rule) Matches(m *irc.Message, event *string) bool {
 }
 
 type ruleAction struct {
-	Ban         *string        `yaml:"ban"`
-	CounterStep *int64         `yaml:"counter_step"`
-	Counter     *string        `yaml:"counter"`
-	Respond     *string        `yaml:"respond"`
-	Timeout     *time.Duration `yaml:"timeout"`
+	Ban           *string        `yaml:"ban"`
+	CounterStep   *int64         `yaml:"counter_step"`
+	Counter       *string        `yaml:"counter"`
+	DeleteMessage *bool          `yaml:"delete_message"`
+	Respond       *string        `yaml:"respond"`
+	Timeout       *time.Duration `yaml:"timeout"`
 }
 
 func loadConfig(filename string) error {
diff --git a/wiki/Home.md b/wiki/Home.md
index bcd2096..0a0d855 100644
--- a/wiki/Home.md
+++ b/wiki/Home.md
@@ -23,6 +23,9 @@ rules: # See below for examples
     - counter: "counterid" # String to identify the counter, applies templating
       counter_step: 1      # Integer, can be negative or positive, default: +1
 
+    # Issue a delete on the message caught
+    - delete_message: true # Bool, set to true to delete
+
     # Send responding message to the channel the original message was received in
     - respond: 'Hello chatter' # String, applies templating