package code

import (
	"io"
	"io/ioutil"
	"net/http"
	"strings"
	"sync/atomic"

	ice "shylinux.com/x/icebergs"
	"shylinux.com/x/icebergs/base/cli"
	"shylinux.com/x/icebergs/base/mdb"
	"shylinux.com/x/icebergs/base/nfs"
	"shylinux.com/x/icebergs/base/web"
	"shylinux.com/x/icebergs/base/web/html"
	kit "shylinux.com/x/toolkits"
	"shylinux.com/x/toolkits/util/bench"
)

func _bench_http(m *ice.Message, target string, arg ...string) {
	list := []*http.Request{}
	nconn := kit.Int64(kit.Select("10", m.Option(NCONN)))
	nreqs := kit.Int64(kit.Select("100", m.Option(NREQS)))
	m.Cmd(nfs.CAT, "", kit.Dict(nfs.CAT_CONTENT, target), func(ls []string, text string) {
		if len(ls) == 0 || strings.HasPrefix(text, "#") {
			return
		}
		switch ls[0] {
		case http.MethodPost:
			if len(ls) == 2 {
				if req, err := http.NewRequest(http.MethodPost, ls[1], nil); m.Assert(err) {
					list = append(list, req)
				}
			} else if f, e := nfs.OpenFile(m, ls[2]); m.Assert(e) {
				defer f.Close()
				if req, err := http.NewRequest(http.MethodPost, ls[1], f); m.Assert(err) {
					list = append(list, req)
				}
			}
		case http.MethodGet:
			ls = ls[1:]
			fallthrough
		default:
			if req, err := http.NewRequest(http.MethodGet, ls[0], nil); m.Assert(err) {
				list = append(list, req)
			}
		}
	})
	var ndata, count int64
	total := int(nreqs * nconn)
	web.GoToast(m, func(toast func(name string, count, total int)) []string {
		if s, e := bench.HTTP(m.FormatTaskMeta(), nconn, nreqs, list, func(req *http.Request, res *http.Response) {
			toast(m.Option(mdb.NAME), int(count), total)
			n, _ := io.Copy(ioutil.Discard, res.Body)
			atomic.AddInt64(&ndata, n)
			atomic.AddInt64(&count, 1)
		}); m.Assert(e) {
			m.Echo("nconn: %d total: %d ndata: %s\n", nconn, total, kit.FmtSize(ndata)).Echo(s.Show()).ProcessInner()
		}
		return nil
	})
}
func _bench_redis(m *ice.Message, target string, arg ...string) {
}

const (
	HTTP  = "http"
	REDIS = "redis"
)
const (
	NCONN = "nconn"
	NREQS = "nreqs"
)
const BENCH = "bench"

func init() {
	Index.MergeCommands(ice.Commands{
		BENCH: {Help: "压测", Meta: kit.Dict(
			ice.CTX_TRANS, kit.Dict(html.INPUT, kit.Dict(NCONN, "连接数", NREQS, "请求数")),
		), Actions: ice.MergeActions(ice.Actions{
			mdb.CREATE: {Name: "create zone*=demo"},
			mdb.INSERT: {Name: "insert zone*=demo type*=http,redis name=demo text*='http://localhost:9020/chat/cmd/web.chat.favor' nconn=10 nreqs=100"},
			cli.START: {Hand: func(m *ice.Message, arg ...string) {
				if m.Option(mdb.ID) == "" {
					m.Cmds("", m.Option(mdb.ZONE)).Table(func(value ice.Maps) {
						m.Spawn(value).Cmd("", cli.START)
					})
					return
				}
				defer web.ToastProcess(m)()
				switch m.Option(mdb.TYPE) {
				case HTTP:
					_bench_http(m, m.Option(mdb.TEXT))
				case REDIS:
					_bench_redis(m, m.Option(mdb.TEXT))
				}
			}},
		}, mdb.ExportZoneAction(mdb.FIELDS, "time,id,type,name,text,nconn,nreqs")), Hand: func(m *ice.Message, arg ...string) {
			mdb.ZoneSelect(m, arg...)
			m.PushAction(kit.Select(cli.START, mdb.REMOVE, len(arg) == 0))
			kit.If(len(arg) == 1, func() { m.Action(mdb.INSERT, cli.START) })
		}},
	})
}