From 2eb1457019040af2631baec48d3cb26fc77521ea Mon Sep 17 00:00:00 2001
From: Jan Bader <jan.bader@ub-software.de>
Date: Sun, 7 Nov 2021 21:56:35 +0100
Subject: [PATCH] Load config from ENV

---
 cmd/budgeteer/main.go |  4 ++--
 config/config.go      | 19 ++++++++-----------
 2 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/cmd/budgeteer/main.go b/cmd/budgeteer/main.go
index cf1cf94..21977c7 100644
--- a/cmd/budgeteer/main.go
+++ b/cmd/budgeteer/main.go
@@ -10,9 +10,9 @@ import (
 )
 
 func main() {
-	cfg, err := config.LoadConfig("config.json")
+	cfg, err := config.LoadConfig()
 	if err != nil {
-		panic("Could not load Config from config.json")
+		panic("Could not load Config")
 	}
 
 	bv := &bcrypt.Verifier{}
diff --git a/config/config.go b/config/config.go
index 5d8f0df..200be74 100644
--- a/config/config.go
+++ b/config/config.go
@@ -1,7 +1,6 @@
 package config
 
 import (
-	"encoding/json"
 	"os"
 )
 
@@ -11,21 +10,19 @@ type Config struct {
 	DatabaseHost     string
 	DatabasePassword string
 	DatabaseName     string
-	file             *os.File
 }
 
 // LoadConfig from path
-func LoadConfig(path string) (*Config, error) {
-	file, err := os.Open(path)
-	if err != nil {
-		return nil, err
+func LoadConfig() (*Config, error) {
+	configuration := Config{
+		DatabaseUser:     os.Getenv("BUDGETEER_DB_USER"),
+		DatabaseHost:     os.Getenv("BUDGETEER_DB_HOST"),
+		DatabasePassword: os.Getenv("BUDGETEER_DB_PASS"),
+		DatabaseName:     os.Getenv("BUDGETEER_DB_NAME"),
 	}
 
-	decoder := json.NewDecoder(file)
-	configuration := Config{}
-	err = decoder.Decode(&configuration)
-	if err != nil {
-		return nil, err
+	if configuration.DatabaseName == "" {
+		configuration.DatabaseName = "budgeteer"
 	}
 
 	return &configuration, nil