Wire everything together, config and transaction implementation

internal/config/config.go

@@ -0,0 +1,29 @@
+package config
+
+import (
+	"encoding/json"
+	"os"
+)
+
+type Config struct {
+	DB_URL          string   `json:"db_url"`
+	LISTEN_ON       string   `json:"listen_on"`
+	TRUSTED_PROXIES []string `json:"trusted_proxies"`
+	OTLP_ENDPOINT   string   `json:"otlp_endpoint"`
+	ALLOWED_ORIGINS []string `json:"allowed_origins"`
+}
+
+func Read() *Config {
+	file, err := os.ReadFile("./settings.json")
+	if err != nil {
+		panic(err)
+	}
+
+	var config Config
+	err = json.Unmarshal(file, &config)
+	if err != nil {
+		panic(err)
+	}
+
+	return &config
+}