package kos

import (
	"context"
	"git.nspix.com/golang/kos/util/env"
	"git.nspix.com/golang/kos/util/ip"
	"git.nspix.com/golang/kos/util/sys"
	"os"
	"strconv"
	"strings"
	"syscall"
)

type (
	Options struct {
		Name                string            //名称
		Version             string            //版本号
		Address             string            //绑定地址
		Port                int               //端口
		EnableDebug         bool              //开启调试模式
		DisableGateway      bool              //禁用HTTP和COMMAND入口
		DisableHttp         bool              //禁用HTTP入口
		EnableDirectHttp    bool              //启用HTTP直连模式
		DisableCommand      bool              //禁用COMMAND入口
		EnableDirectCommand bool              //启用COMMAND直连模式
		DisableStateApi     bool              //禁用系统状态接口
		Metadata            map[string]string //原数据
		Context             context.Context
		Signals             []os.Signal
		server              Server
		shortName           string
	}

	Option func(o *Options)

	HandleOptions struct {
		description string
	}

	HandleOption func(o *HandleOptions)
)

func (o *Options) ShortName() string {
	if o.shortName != "" {
		return o.shortName
	}
	if pos := strings.LastIndex(o.Name, "/"); pos != -1 {
		o.shortName = o.Name[pos+1:]
	} else {
		o.shortName = o.Name
	}
	return o.shortName
}

func WithHandleDescription(s string) HandleOption {
	return func(o *HandleOptions) {
		o.description = s
	}
}

func WithName(name string, version string) Option {
	return func(o *Options) {
		o.Name = name
		o.Version = version
	}
}

func WithoutGateway() Option {
	return func(o *Options) {
		o.DisableGateway = true
	}
}

func WithPort(port int) Option {
	return func(o *Options) {
		o.Port = port
	}
}

func WithServer(s Server) Option {
	return func(o *Options) {
		o.server = s
	}
}

func WithDebug() Option {
	return func(o *Options) {
		o.EnableDebug = true
	}
}

func WithDirectHttp() Option {
	return func(o *Options) {
		o.DisableCommand = true
		o.EnableDirectHttp = true
	}
}

func WithDirectCommand() Option {
	return func(o *Options) {
		o.DisableHttp = true
		o.EnableDirectCommand = true
	}
}

func NewOptions(cbs ...Option) *Options {
	opts := &Options{
		Name:     env.Get(EnvAppName, sys.Hostname()),
		Version:  env.Get(EnvAppVersion, "0.0.1"),
		Context:  context.Background(),
		Metadata: make(map[string]string),
		Signals:  []os.Signal{syscall.SIGTERM, syscall.SIGINT, syscall.SIGQUIT, syscall.SIGKILL},
	}
	opts.Port = int(env.Integer(18080, EnvAppPort, "HTTP_PORT", "KOS_PORT"))
	opts.Address = env.Getter(ip.Internal(), EnvAppAddress, "KOS_ADDRESS")
	opts.EnableDebug, _ = strconv.ParseBool(env.Getter("false", EnvAppDebug, "KOS_DEBUG"))
	for _, cb := range cbs {
		cb(opts)
	}
	return opts
}

func newHandleOptions(cbs ...HandleOption) *HandleOptions {
	opts := &HandleOptions{}
	for _, cb := range cbs {
		cb(opts)
	}
	return opts
}