From 43ea994b9e7b47be91f0f30eccf33bdbeeafac99 Mon Sep 17 00:00:00 2001
From: Gabor Takacs <gabor.takacs@cheppers.com>
Date: Tue, 18 Oct 2016 17:55:37 +0200
Subject: [PATCH] Check for slack_token parameter before launch

---
 README.md              | 2 +-
 src/config/config.go   | 5 +++++
 src/context/context.go | 2 +-
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 14b525a..61d8d05 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ Getting started
 
     ```javascript
     {
-        "slack_token": "yourslacktokenhere"
+        "slack_token": "yourslacktokenhere",
 
         // add the following to use light theme, default is dark
         "theme": "light"
diff --git a/src/config/config.go b/src/config/config.go
index 8227f40..7b63d2a 100644
--- a/src/config/config.go
+++ b/src/config/config.go
@@ -2,6 +2,7 @@ package config
 
 import (
 	"encoding/json"
+	"errors"
 	"os"
 
 	"github.com/gizak/termui"
@@ -28,6 +29,10 @@ func NewConfig(filepath string) (*Config, error) {
 		return &cfg, err
 	}
 
+	if cfg.SlackToken == "" {
+		return &cfg, errors.New("couldn't find 'slack_token' parameter")
+	}
+
 	if cfg.Theme == "light" {
 		termui.ColorMap = map[string]termui.Attribute{
 			"fg":           termui.ColorBlack,
diff --git a/src/context/context.go b/src/context/context.go
index 0a75b37..c65004d 100644
--- a/src/context/context.go
+++ b/src/context/context.go
@@ -29,7 +29,7 @@ func CreateAppContext(flgConfig string) *AppContext {
 	// Load config
 	config, err := config.NewConfig(flgConfig)
 	if err != nil {
-		log.Fatalf("ERROR: not able to load config file: %s", flgConfig)
+		log.Fatalf("ERROR: not able to load config file (%s): %s", flgConfig, err)
 	}
 
 	// Create Service