package maddy

import (
	"io"

	"github.com/foxcpp/maddy/config"
	"github.com/foxcpp/maddy/log"

	// Import packages for side-effect of module registration.
	_ "github.com/foxcpp/maddy/auth/external"
	_ "github.com/foxcpp/maddy/auth/pam"
	_ "github.com/foxcpp/maddy/auth/shadow"
	_ "github.com/foxcpp/maddy/check/dkim"
	_ "github.com/foxcpp/maddy/check/dns"
	_ "github.com/foxcpp/maddy/check/dnsbl"
	_ "github.com/foxcpp/maddy/check/spf"
	_ "github.com/foxcpp/maddy/endpoint/imap"
	_ "github.com/foxcpp/maddy/endpoint/smtp"
	_ "github.com/foxcpp/maddy/modify"
	_ "github.com/foxcpp/maddy/modify/dkim"
	_ "github.com/foxcpp/maddy/storage/sql"
	_ "github.com/foxcpp/maddy/target/queue"
	_ "github.com/foxcpp/maddy/target/remote"
	_ "github.com/foxcpp/maddy/target/smtp_downstream"
)

func Start(cfg []config.Node) error {
	globals := config.NewMap(nil, &config.Node{Children: cfg})
	globals.String("hostname", false, false, "", nil)
	globals.String("autogenerated_msg_domain", false, false, "", nil)
	globals.Custom("tls", false, false, nil, config.TLSDirective, nil)
	globals.Bool("storage_perdomain", false, false, nil)
	globals.Bool("auth_perdomain", false, false, nil)
	globals.StringList("auth_domains", false, false, nil, nil)
	globals.Custom("log", false, false, defaultLogOutput, logOutput, &log.DefaultLogger.Out)
	globals.Bool("debug", false, log.DefaultLogger.Debug, &log.DefaultLogger.Debug)
	globals.AllowUnknown()
	unknown, err := globals.Process()
	if err != nil {
		return err
	}

	defer log.DefaultLogger.Out.Close()

	insts, err := instancesFromConfig(globals.Values, unknown)
	if err != nil {
		return err
	}

	handleSignals()

	for _, inst := range insts {
		if closer, ok := inst.(io.Closer); ok {
			if err := closer.Close(); err != nil {
				log.Printf("module %s (%s) close failed: %v", inst.Name(), inst.InstanceName(), err)
			}
		}
	}

	return nil
}