From 5b5de9767260b46583f15a538672a32c72c951bf Mon Sep 17 00:00:00 2001
From: Sean Hinchee <henesy@users.noreply.github.com>
Date: Tue, 30 Jan 2018 07:14:30 +0000
Subject: [PATCH] added rudimentary man support

---
 TODO             |  2 --
 mux.go           |  2 ++
 x/mux/commits.go |  2 --
 x/mux/man.go     | 94 ++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 96 insertions(+), 4 deletions(-)
 create mode 100644 x/mux/man.go

diff --git a/TODO b/TODO
index 5c206d63875b1b0125c5b3b9e56dd679d61f7551..a0414c433dad1f4a2ebf9e5808642a6dc1bc8e88 100644
--- a/TODO
+++ b/TODO
@@ -1,7 +1,5 @@
 Features
 * g!sum acid(1)
-* g!man acid(1) or g!man 1 acid
-* rss feed subscription (tracking commits)
 * Server greeting
 * 9front/plan9 source searching
 * various cat-v fetches (harmful, page search [get lucky])
diff --git a/mux.go b/mux.go
index 2eb1da42c573d0271f60a95aeaf216e30a8f0da1..31e2d8641982c28642a3139e6bef178c8afef803 100644
--- a/mux.go
+++ b/mux.go
@@ -29,6 +29,8 @@ func init() {
 	Router.Route("dump", "Dump config to file.", Router.Dump)
 	
 	Router.Route("subscribe", "Subscribe current channel to a given feed id.", Router.Subscribe)
+	
+	Router.Route("man", "Display a given Plan 9 manual page (From 9front for now).", Router.Man)
 
 	Router.Route("about", "General information about the bot.", Router.About)
 	
diff --git a/x/mux/commits.go b/x/mux/commits.go
index eaff1ccc9f55fd124dd97797ea0c257e4c09d9a6..24deb7f2b7c3a0581c7b4721754c2dc850aae135 100644
--- a/x/mux/commits.go
+++ b/x/mux/commits.go
@@ -64,8 +64,6 @@ func (m *Mux) Last(ds *discordgo.Session, dm *discordgo.Message, ctx *Context) {
 		resp += "**" + Config.Feeds[id].Title + ": **" + "\n"
 		resp += Config.Feeds[id].Items[0].Date.String() + "\n\n"
 		resp += "`" + Config.Feeds[id].Items[0].Title + "`" + "\n"
-		//resp += Config.Feeds[id].Items[0].Summary + "\n"
-		//resp += Config.Feeds[id].Items[0].Content + "\n"
 		resp += "\n" + Config.Feeds[id].Items[0].Link + "\n"
 		Config.Feeds[id].Items[0].Read = true
 		fmt.Println("Last-ing notification: ", Config.Feeds[id].Items[0])
diff --git a/x/mux/man.go b/x/mux/man.go
new file mode 100644
index 0000000000000000000000000000000000000000..587b7c19add3147748e43ea231443c05f5b7501c
--- /dev/null
+++ b/x/mux/man.go
@@ -0,0 +1,94 @@
+package mux
+
+import (
+	"github.com/bwmarrin/discordgo"
+	"fmt"
+	"net/http"
+	"strings"
+	"io/ioutil"
+	"time"
+	"strconv"
+)
+
+
+// Fetch a man page
+func (m *Mux) Man(ds *discordgo.Session, dm *discordgo.Message, ctx *Context) {
+	resp := "\n"
+	var err error 
+	
+	page := ""
+	section := ""
+	if len(ctx.Fields) == 3 {
+		// `man 1 bc` format
+		section += ctx.Fields[len(ctx.Fields)-2]
+		page += ctx.Fields[len(ctx.Fields)-1]
+	
+		// Should allow selection of manual categories beyond 9front
+		url := "http://man.cat-v.org/9front/" + section + "/" + page
+		
+		page, err := http.Get(url)
+		defer page.Body.Close()
+		body, err := ioutil.ReadAll(page.Body)
+		
+		if err != nil || strings.Contains(string(body), "The requested document at") {
+			fmt.Println("Error finding man page, see: x/mux/man.go")
+			fmt.Println("%s\n", err)
+			resp += "Invalid manual page requested."
+		} else {
+			resp += string(url)
+		}
+		
+	} else if len(ctx.Fields) == 2 {
+		// `man srv` format
+		page += ctx.Fields[len(ctx.Fields)-1]
+		any := false
+		
+		for i:=1; i < 9; i++ {
+			// Should allow selection of manual categories beyond 9front
+			url := "http://man.cat-v.org/9front/" + strconv.Itoa(i) + "/" + page
+			
+			page, err := http.Get(url)
+			defer page.Body.Close()
+			body, err := ioutil.ReadAll(page.Body)
+			
+			if err != nil || strings.Contains(string(body), "The requested document at") {
+				continue
+			} else {
+				if !any {
+					any = true
+					resp += ".\n"
+				}
+				resp += string(url) + "\n"
+			}
+			time.Sleep(1 * time.Second)
+		}
+		
+		// No matches
+		if !any {
+			resp += "No matching manual page(s) found."
+		}
+		
+	} else {
+		resp += "No op. Please use the 'man 3 srv' format or 'man srv' format."
+	}
+
+	resp += "\n"
+
+	_, err = ds.ChannelMessageSend(dm.ChannelID, resp)
+	if err != nil {
+		fmt.Println("Error sending man(1) output as message, see: x/mux/man.go")
+		fmt.Println(err)
+	}
+
+	return
+}
+
+// Fetch a summary of a man page
+func (m *Mux) Sum(ds *discordgo.Session, dm *discordgo.Message, ctx *Context) {
+	
+}
+
+// Call lookman on a given query
+func (m *Mux) Lookman(ds *discordgo.Session, dm *discordgo.Message, ctx *Context) {
+	
+}