added handler for tailing game log file

gamelog.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"log"
+
+	"github.com/hpcloud/tail"
+)
+
+func tailLog(filename string) ([]string, error) {
+	result := []string{}
+
+	t, err := tail.TailFile(config.FactorioLog, tail.Config{Follow: false})
+	if err != nil {
+		log.Printf("Error tailing log %s", err)
+		return result, err
+	}
+
+	for line := range t.Lines {
+		result = append(result, line.Text)
+	}
+
+	return result, nil
+}

handlers.go

@@ -14,10 +14,9 @@ func Index(w http.ResponseWriter, r *http.Request) {
 }
 
 func ListInstalledMods(w http.ResponseWriter, r *http.Request) {
-	mods := listInstalledMods()
-
 	w.Header().Set("Content-Type", "application/json;charset=UTF-8")
-	w.WriteHeader(http.StatusOK)
+
+	mods := listInstalledMods()
 
 	if err := json.NewEncoder(w).Encode(mods); err != nil {
 		log.Printf("Error in list mods: %s", err)
@@ -69,3 +68,17 @@ func ListSaves(w http.ResponseWriter, r *http.Request) {
 		log.Printf("Error listing saves: %s", err)
 	}
 }
+
+func LogTail(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json;charset=UTF-8")
+
+	logLines, err := tailLog(config.FactorioLog)
+	if err != nil {
+		log.Printf("Could not tail %s: %s", config.FactorioLog, err)
+		return
+	}
+
+	if err := json.NewEncoder(w).Encode(logLines); err != nil {
+		log.Printf("Error tailing logfile", err)
+	}
+}

main.go

@@ -2,26 +2,28 @@ package main
 
 import (
 	"flag"
-	"fmt"
 	"log"
 	"net/http"
 )
 
 type Config struct {
 	FactorioDir string
+	ServerIP    string
+	FactorioLog string
 }
 
 var config Config
 
 func main() {
 	factorioDir := flag.String("dir", "./", "Specify location of Factorio config directory.")
+	factorioIP := flag.String("host", "0.0.0.0:8080", "Specify IP and port for webserver to listen on.")
 	flag.Parse()
 
 	config.FactorioDir = *factorioDir
-
-	fmt.Println(listInstalledMods())
+	config.ServerIP = *factorioIP
+	config.FactorioLog = config.FactorioDir + "/factorio-current.log"
 
 	router := NewRouter()
 
-	log.Fatal(http.ListenAndServe(":8080", router))
+	log.Fatal(http.ListenAndServe(config.ServerIP, router))
 }

mods.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"encoding/json"
-	"fmt"
 	"io/ioutil"
 	"log"
 )
@@ -16,6 +15,7 @@ type Mod struct {
 	Enabled bool   `json:"enabled,string"`
 }
 
+// List mods installed in the factorio/mods directory
 func listInstalledMods() []string {
 	modDir := config.FactorioDir + "/mods"
 	result := []string{}
@@ -35,6 +35,8 @@ func listInstalledMods() []string {
 	return result
 }
 
+// Parses mod-list.json file in factorio/mods
+// returns ModList struct
 func parseModList() (ModList, error) {
 	var mods ModList
 	modListFile := config.FactorioDir + "/mods/mod-list.json"
@@ -52,9 +54,9 @@ func parseModList() (ModList, error) {
 	}
 
 	return mods, nil
-
 }
 
+// Toggles Enabled boolean on each Mod in mod-list.json file
 func (m *ModList) toggleMod(name string) error {
 	found := false
 
@@ -69,16 +71,16 @@ func (m *ModList) toggleMod(name string) error {
 		}
 	}
 
-	if found == false {
-		err := fmt.Errorf("Mod with name %s not found", name)
-		return err
+	if found {
+		m.save()
+		log.Printf("Mod: %s was toggled", name)
 	}
 
-	m.save()
-
 	return nil
 }
 
+// Saves ModList object to mod-list.json file
+// Overwrites old file
 func (m ModList) save() error {
 	modListFile := config.FactorioDir + "/mods/mod-list.json"
 	b, _ := json.MarshalIndent(m, "", "    ")

routes.go

@@ -55,5 +55,10 @@ var routes = Routes{
 		"GET",
 		"/saves/list",
 		ListSaves,
+	}, {
+		"TailLog",
+		"GET",
+		"/log/tail",
+		LogTail,
 	},
 }

saves.go

@@ -5,6 +5,7 @@ import (
 	"log"
 )
 
+// Lists save files in factorio/saves
 func listSaves() []string {
 	saveDir := config.FactorioDir + "/saves"
 	result := []string{}

static/js/App/App.jsx

@@ -0,0 +1,16 @@
+import React from 'react';
+import Hello from './components/hello.jsx';
+import World from './components/world.jsx';
+
+class App extends React.Component {
+    render() {
+        return(
+            <div>
+                <Hello />
+                <World />
+            </div>
+        )
+    }
+}
+
+export default App

static/js/App/components/hello.jsx

@@ -1,5 +1,4 @@
 import React from 'react';
-import ReactDOM from 'react-dom';
 
 class Hello extends React.Component {
   render() {
@@ -7,4 +6,4 @@ class Hello extends React.Component {
   }
 }
 
-ReactDOM.render(<Hello />, document.getElementById('hello'));
+export default Hello

static/js/App/components/world.jsx

@@ -1,11 +1,9 @@
 import React from 'react';
-import ReactDOM from 'react-dom';
  
 class World extends React.Component {
   render() {
       return <h1>World</h1>
     }
 }
- 
-ReactDOM.render(<World/>, document.getElementById('world'));
 
+export default World

static/js/App/main.js

@@ -1,2 +0,0 @@
-import Hello from './components/hello.jsx';
-import World from './components/world.jsx';

static/js/index.html

@@ -5,8 +5,7 @@
     <title>Hello React</title>
   </head>
   <body>
-    <div id="hello"></div>
-    <div id="world"></div>
+    <div id="app"></div>
     <script src="bundle.js"></script>
   </body>
 </html>

static/js/index.js

@@ -0,0 +1,8 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App/App.jsx';
+
+ReactDOM.render(
+    <App />,
+    document.getElementById('app')
+);

static/js/webpack.config.js

@@ -2,7 +2,7 @@ var path = require('path');
 var webpack = require('webpack');
 
 module.exports = {
-  entry: './App/main.js',
+  entry: './index.js',
   output: { path: __dirname, filename: 'bundle.js' },
   module: {
     loaders: [