- graph, dotenv read

- graph, cors and secure header
- web, urql client basic setup

config/config.go

@@ -0,0 +1,78 @@
+package config
+
+import (
+	"fmt"
+	"reflect"
+	"strconv"
+
+	"gitserver.in/patialtech/rano/config/dotenv"
+	"gitserver.in/patialtech/rano/pkg/logger"
+)
+
+const Env = "development"
+
+var conf *Config
+
+func init() {
+	envVar, err := dotenv.Read(fmt.Sprintf(".env.%s", Env))
+	if err != nil {
+		panic(err)
+	}
+
+	conf = &Config{}
+	conf.loadEnv(envVar)
+}
+
+// Read config for Env
+func Read() *Config {
+	if conf == nil {
+		panic("config not initialized")
+	}
+
+	return conf
+}
+
+type Config struct {
+	WebPort   int    `env:"WEB_PORT"`
+	WebURL    string `env:"WEB_URL"`
+	GraphPort int    `env:"GRAPH_PORT"`
+	GrapURL   string `env:"GRAPH_URL"`
+}
+
+func (c *Config) loadEnv(vars map[string]string) {
+	if c == nil {
+		return
+	}
+
+	val := reflect.Indirect(reflect.ValueOf(c))
+	for i := 0; i < val.NumField(); i++ {
+		f := val.Type().Field(i)
+		tag := f.Tag.Get("env")
+		if tag == "" {
+			continue
+		}
+
+		v, found := vars[tag]
+		if !found {
+			logger.Warn("var %q not found in file .env.%s", tag, Env)
+			continue
+		}
+
+		field := val.FieldByName(f.Name)
+		if !field.IsValid() {
+			continue
+		}
+
+		switch f.Type.Kind() {
+		case reflect.Int:
+			if intV, err := strconv.ParseInt(v, 10, 64); err != nil {
+				panic(err)
+			} else {
+				field.SetInt(intV)
+			}
+		default:
+			field.SetString(v)
+		}
+	}
+
+}