package config

import (
	"git.yuntuo.hk/k2safe/go-omni/config"
	"git.yuntuo.hk/k2safe/go-omni/logx"
	"os"
	"time"
)

type Config struct {
	Server config.Config `json:"server"`
}

func Default() Config {
	server := config.Default()
	server.Address = "127.0.0.1:8080"
	server.EnableLogger = true
	server.SlowRequestThreshold = 500 * time.Millisecond
	server.Log.Service = "example.com/managed"
	server.Log.Format = "json"
	server.Log.Output = "stderr"
	return Config{Server: server}
}

// Load applies defaults -> file -> typed environment -> validation.
// New fields automatically use GO_OMNI_<JSON_PATH>, or an explicit env tag.
func Load(path string) (Config, error) {
	cfg := Default()
	var err error
	cfg, err = config.ApplyDefaults(cfg)
	if err != nil {
		return Config{}, err
	}
	if path != "" {
		cfg, err = config.DecodeFile(path, cfg)
		if err != nil {
			return Config{}, err
		}
	}
	cfg, err = config.OverlayEnv(cfg, config.EnvOptions{Prefix: "GO_OMNI_", Empty: "ignore", Aliases: config.ServerEnvAliases("GO_OMNI_", "server")})
	if err != nil {
		return Config{}, err
	}
	output, outputSet := os.LookupEnv("GO_OMNI_SERVER_LOG_OUTPUT")
	if !outputSet {
		output = os.Getenv("GO_OMNI_LOG_OUTPUT")
	}
	file, fileSet := os.LookupEnv("GO_OMNI_SERVER_LOG_FILE")
	if !fileSet {
		file = os.Getenv("GO_OMNI_LOG_FILE")
	}
	if output != "" && file == "" {
		cfg.Server.Log.File = ""
		cfg.Server.Log.Rotation = logx.RotationConfig{}
	}
	return cfg, cfg.Validate()
}
func (c Config) Validate() error {
	if err := c.Server.Validate(); err != nil {
		return err
	}

	return nil
}