package config

import (
	"fmt"
	"os"

	"gopkg.in/yaml.v3"
)

type Config struct {
	Server       ServerConfig      `yaml:"server"`
	VeriFactu    VeriFactuConfig   `yaml:"verifactu"`
	Certificates CertificateConfig `yaml:"certificates"`
	Crypto       CryptoConfig      `yaml:"crypto"`
}

type ServerConfig struct {
	Port int `yaml:"port"`
}

type VeriFactuConfig struct {
	Environment string `yaml:"environment"`
}

type CertificateConfig struct {
	StoragePath string `yaml:"storage_path"`
}

type CryptoConfig struct {
	KeysPath string `yaml:"keys_path"`
}

func Load(path string) (*Config, error) {
	data, err := os.ReadFile(path)
	if err != nil {
		return nil, fmt.Errorf("reading config file: %w", err)
	}

	var cfg Config
	if err := yaml.Unmarshal(data, &cfg); err != nil {
		return nil, fmt.Errorf("parsing config file: %w", err)
	}

	if cfg.Server.Port == 0 {
		cfg.Server.Port = 8080
	}
	if cfg.VeriFactu.Environment == "" {
		cfg.VeriFactu.Environment = "test"
	}
	if cfg.Certificates.StoragePath == "" {
		cfg.Certificates.StoragePath = "./certs/"
	}
	if cfg.Crypto.KeysPath == "" {
		cfg.Crypto.KeysPath = "./keys/"
	}

	return &cfg, nil
}