Initial AI service skeleton

internal/config/config.go

@@ -0,0 +1,53 @@
+package config
+
+import (
+	"os"
+	"strconv"
+)
+
+type Config struct {
+	HTTPHost       string
+	HTTPPort       int
+	DatabaseURL    string
+	MigrateOnStart bool
+}
+
+func Load() Config {
+	return Config{
+		HTTPHost:       envString("HTTP_HOST", "0.0.0.0"),
+		HTTPPort:       envInt("HTTP_PORT", 8080),
+		DatabaseURL:    envString("DATABASE_URL", ""),
+		MigrateOnStart: envBool("MIGRATE_ON_START", true),
+	}
+}
+
+func envString(key, fallback string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return fallback
+}
+
+func envInt(key string, fallback int) int {
+	raw := os.Getenv(key)
+	if raw == "" {
+		return fallback
+	}
+	v, err := strconv.Atoi(raw)
+	if err != nil {
+		return fallback
+	}
+	return v
+}
+
+func envBool(key string, fallback bool) bool {
+	raw := os.Getenv(key)
+	if raw == "" {
+		return fallback
+	}
+	v, err := strconv.ParseBool(raw)
+	if err != nil {
+		return fallback
+	}
+	return v
+}