From 941ae498dd2b65d967a7363ebeab04c3ae42036c Mon Sep 17 00:00:00 2001
From: Sean Hinchee <henesy@users.noreply.github.com>
Date: Wed, 16 Jan 2019 18:20:29 -0600
Subject: [PATCH] add s/word/words/g style editing of last message sent

---
 README.md   | 10 +++++++---
 commands.go | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index c7c35f1aaf55c7281dfc3a4cf5dfa69f4aed8694..e5008e8af964dc0c62ff29d95721559946db3a77 100644
--- a/README.md
+++ b/README.md
@@ -33,9 +33,13 @@ Commands available in chat:
 | :p        | Pulls up the private channel menu |
 | :n name   | Change nickname to `name` |
 
+You can regex the last message sent using a format such as:
+
+	s/forsynth/forsyth/g
+
 ## Config
 
-A normal $home/lib/disco.ndb looks something like:
+A basic $home/lib/disco.ndb looks something like:
 
 ```
 auth=pass
@@ -53,7 +57,7 @@ Note that the auth= tuple accepts
 
 for authentication using a factotum key and will ignore the password= tuple.
 
-The factotum key should resemble something to the effect of:
+If used, the factotum key should resemble something to the effect of:
 
 	proto=pass server=discordapp.com service=discord user=youremail@domain.com !password=hunter2
 
@@ -69,7 +73,7 @@ A: If you want to use `go get` on 9front to install disco and its dependencies (
 
 Q: What if I can't login because of a captcha error?
 
-A: You'll need to sign in to Discord via the web app (thus solving a captcha) using a browser with html5/js. I recommend an http proxy such as [this](https://bitbucket.org/henesy/http-proxy).
+A: You'll need to sign in to Discord via the web app (thus solving a captcha) using a browser with html5/js. I recommend an http proxy such as [this](https://bitbucket.org/henesy/http-proxy) in conjunction with a system with such a browser..
 
 Q: What if I get an error about signing in from a new location?
 
diff --git a/commands.go b/commands.go
index 23f938a3ab340b2602ea66c326cce0264aa59be6..037fd3683f8537bc6d2f0ee61244be1160867f5b 100644
--- a/commands.go
+++ b/commands.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"regexp"
 	"strconv"
 	"strings"
 	"github.com/bwmarrin/discordgo"
@@ -12,6 +13,41 @@ func ParseForCommands(line string) string {
 		return line
 	}
 	switch line[:2] {
+	case "s/":
+		r := regexp.MustCompile(`s\/((\w|\s)+)\/((\w|\s|)+)\/`)
+		n := r.FindStringSubmatchIndex(line)
+		if len(n) < 1 {
+			return ""
+		}
+		msg := State.Messages
+		for i := len(msg)-1; i >= 0; i-- {
+			if (msg[i].ChannelID != State.Channel.ID && msg[i].GuildID != State.Guild.ID) {
+				break
+			}
+			if msg[i].Author.ID != Session.User.ID {
+				break
+			}
+			if strings.Contains(msg[i].Content, line[n[2]:n[3]]) {
+				cmd, err := regexp.Compile("(" + line[n[2]:n[3]] + ")")
+				if err != nil {
+					Msg(ErrorMsg, "%s - invalid regex\n", line)
+				}
+				rep := cmd.ReplaceAllString(msg[i].Content, "")
+				if len(line) == 5 {
+					rep = cmd.ReplaceAllString(msg[i].Content, line[n[4]:n[5]])
+				}
+				data := discordgo.NewMessageEdit(msg[i].ChannelID, msg[i].ID)
+				data = data.SetContent(rep)
+				_, err = State.Session.DiscordGo.ChannelMessageEditComplex(data)
+				if err != nil {
+					Msg(ErrorMsg, "%s\n", err)
+					return ""
+				}
+				Msg(TextMsg, "%s -> %s\n", msg[i].Content, rep)
+				return ""
+			}
+		}
+		return line
 	case ":?":
 		// Show help menu
 		Msg(TextMsg, "Commands: ")