From 8a965c588a064d1ec4eb761254f5782708a8236b Mon Sep 17 00:00:00 2001
From: Adora Laura Kalb <adora@lila.network>
Date: Fri, 26 Jul 2024 10:54:50 +0200
Subject: [PATCH] add config check

---
 internal/configuration/configuration.go | 30 +++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/internal/configuration/configuration.go b/internal/configuration/configuration.go
index 01bdf3d..23ad512 100644
--- a/internal/configuration/configuration.go
+++ b/internal/configuration/configuration.go
@@ -48,8 +48,38 @@ func (c Config) LoadFromDisk() error {
 		return fmt.Errorf("failed to unmarshal config file: %w", err)
 	}
 
+	c.checkConfig()
+
 	slog.Debug("successfully read config file", "path", ConfigFile)
 
 	return nil
 
 }
+
+func (c Config) checkConfig() {
+	failed := false
+	if c.ApiEndpoint == "" {
+		slog.Error("[CONFIG] api_endpoint must not be empty")
+		failed = true
+	}
+
+	if c.ApiKey == "" {
+		slog.Error("[CONFIG] api_key must not be empty")
+		failed = true
+	}
+
+	if c.AdminEmail == "" {
+		slog.Error("[CONFIG] admin_email must not be empty")
+		failed = true
+	}
+
+	if len(c.MailPrefixes) < 1 {
+		slog.Error("[CONFIG] mail_prefixes must have at least one entry")
+		failed = true
+	}
+
+	if failed {
+		slog.Error("[CONFIG] Application can't start until above errors are fixed.")
+		os.Exit(1)
+	}
+}