From 5310d08bda170e2d394d27410655283e1797b7ff Mon Sep 17 00:00:00 2001
From: Ben Morrison <ben@gbmor.dev>
Date: Mon, 13 May 2019 00:42:48 -0400
Subject: watching for ^C. added comments.

---
 init.go | 25 +++++++++++++++++++++++++
 main.go | 14 ++++++++++++--
 2 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/init.go b/init.go
index c16c49a..bef94af 100644
--- a/init.go
+++ b/init.go
@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"os/signal"
+	"time"
 
 	"github.com/fsnotify/fsnotify"
 	"github.com/spf13/pflag"
@@ -28,6 +30,7 @@ func init() {
 	titleScreen()
 	initConfig()
 	initLogging()
+	watchForInterrupt()
 }
 
 func initConfig() {
@@ -112,6 +115,28 @@ func rebindConfig() {
 	initLogging()
 }
 
+// Watch for SIGINT aka ^C
+// Close the log file then exit
+func watchForInterrupt() {
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, os.Interrupt)
+
+	go func() {
+		for sigint := range c {
+			log.Printf("\n\nCaught %v. Cleaning up ...\n", sigint)
+
+			if !confObj.stdoutLogging {
+				// signal to close the log file
+				closelog <- true
+				time.Sleep(20 * time.Millisecond)
+			}
+
+			close(closelog)
+			os.Exit(0)
+		}
+	}()
+}
+
 func titleScreen() {
 	fmt.Printf(`
 	
diff --git a/main.go b/main.go
index 267c4ea..25d95af 100644
--- a/main.go
+++ b/main.go
@@ -17,7 +17,7 @@ func main() {
 	index := mux.NewRouter().StrictSlash(true)
 	api := index.PathPrefix("/api").Subrouter()
 
-	// gorilla/mux makes path validation painless
+	// <3 gorilla/mux
 	index.Path("/").
 		Methods("GET").
 		HandlerFunc(indexHandler)
@@ -27,16 +27,26 @@ func main() {
 	api.Path("/").
 		Methods("GET").
 		HandlerFunc(apiBaseHandler)
+	// twtxt will add support for other formats later.
+	// Maybe json? Making this future-proof.
 	api.Path("/{format:(?:plain)}").
 		Methods("GET").
 		HandlerFunc(apiFormatHandler)
+	// Specifying the endpoint with and without query information.
+	// Will return 404 on empty queries otherwise.
 	api.Path("/{format:(?:plain)}/{endpoint:(?:mentions|users|tweets)}").
 		Methods("GET").
+		HandlerFunc(apiEndpointHandler)
+	// Using stdlib net/url to validate the input URLs rather than regex.
+	// Validating a URL with regex is unwieldly
+	api.Path("/{format:(?:plain)}/{endpoint:(?:mentions|users|tweets)}").
 		Queries("url", "{url}", "q", "{query}").
+		Methods("GET").
 		HandlerFunc(apiEndpointHandler)
+	// This is for submitting new users
 	api.Path("/{format:(?:plain)}/{endpoint:users}").
+		Queries("url", "{url}", "nickname", "{nickname:[a-zA-Z0-9]+}").
 		Methods("POST").
-		Queries("url", "{url}", "nickname", "{nickname}").
 		HandlerFunc(apiEndpointPOSTHandler)
 	api.Path("/{format:(?:plain)}/tags").
 		Methods("GET").
-- 
cgit 1.4.1-2-gfad0