Adding config.json

.gitignore

@@ -1,2 +1,3 @@
 snuffler-web
 database.db
+config.json

config.json.example

@@ -0,0 +1,3 @@
+{
+	"port": 6900
+}

main.go

@@ -2,13 +2,20 @@ package main
 
 import (
 	"database/sql"
+	"encoding/json"
+	"fmt"
 	"html/template"
 	"log"
 	"net/http"
+	"os"
 
 	_ "modernc.org/sqlite"
 )
 
+type Config struct {
+	Port uint
+}
+
 type user struct {
 	id     uint
 	name   string
@@ -57,14 +64,33 @@ var db *sql.DB
 
 func main() {
 	var err error
+
+	// Load config
+	fmt.Println("Loading config.json")
+	cfgfile, err := os.Open("config.json")
+	if err != nil {
+		log.Fatal("Error reading config.json!")
+		return
+	}
+	defer cfgfile.Close()
+
+	decoder := json.NewDecoder(cfgfile)
+	Config := Config{}
+	err = decoder.Decode(&Config)
+	if err != nil {
+		log.Fatal("Can't decode config.json!")
+		return
+	}
+
 	db, err = sql.Open("sqlite", "database.db")
 	if err != nil {
 		log.Fatal(err)
 	}
 
+	fmt.Printf("Starting listener on :%v", Config.Port)
 	http.Handle("/static/", http.FileServer(http.Dir("./")))
 	http.HandleFunc("/", httpRootHandler)
-	err = http.ListenAndServe(":6900", nil)
+	err = http.ListenAndServe(fmt.Sprintf(":%v", Config.Port), nil)
 	if err != nil {
 		log.Fatal(err)
 	}