package wup_test

import (
	"strings"
	"testing"

	"huya-go/internal/huya"
	"huya-go/internal/wup"
)

func TestWupEncodeDecodeHeader(t *testing.T) {
	req := wup.NewRequest(huya.ServantWebActUI, huya.FuncGetUserScore, 2)
	err := req.WriteStruct("tReq", &huya.GetUserScoreReq{
		User: huya.NewActivityUserID(123, "yyuid=123;", huya.ActivityWebUA),
		SID:  456,
	})
	if err != nil {
		t.Fatal(err)
	}
	raw, err := req.Encode()
	if err != nil {
		t.Fatal(err)
	}
	var resp wup.Response
	if err := resp.Decode(raw); err != nil {
		t.Fatal(err)
	}
	if resp.Servant != huya.ServantWebActUI || resp.Func != huya.FuncGetUserScore || resp.RequestID != 2 {
		t.Fatalf("unexpected header: %#v", resp)
	}
	if len(resp.NewData["tReq"]) == 0 {
		t.Fatal("missing tReq")
	}
}

// TestResponseDiagnoseIncludesServerFields 验证诊断串会把 WUP 响应里的排障字段带出来。
//
// 2026-10-16 的复盘卡在「响应缺少 tRsp/tResp」只有一句文案：服务端回的 iRet、
// status、context 与数据体键名全被丢掉，同一账号连续 13 次命中也无法定性。
func TestResponseDiagnoseIncludesServerFields(t *testing.T) {
	resp := &wup.Response{
		Message: -1,
		Servant: "webActUI",
		Func:    "scoreExchangePrize",
		Status:  map[string]string{"STATUS_RESULT_DESC": "风控拦截", "STATUS_RESULT_CODE": "-1"},
		Context: map[string]string{"uid": "123"},
		NewData: map[string][]byte{"tErr": {0x0c}},
		Buffer:  []byte{1, 2, 3},
	}
	got := resp.Diagnose()
	for _, want := range []string{
		"iRet=-1",
		"servant=webActUI.scoreExchangePrize",
		"STATUS_RESULT_CODE=-1",
		"STATUS_RESULT_DESC=风控拦截",
		"context={uid=123}",
		"keys={tErr(1B)}",
		"payload=3B",
	} {
		if !strings.Contains(got, want) {
			t.Fatalf("Diagnose()=%q，缺少 %q", got, want)
		}
	}
	if got := (*wup.Response)(nil).Diagnose(); got != "响应为空" {
		t.Fatalf("空响应诊断=%q", got)
	}
	if got := (&wup.Response{}).Diagnose(); !strings.Contains(got, "iRet=0") || !strings.Contains(got, "keys=空") {
		t.Fatalf("零值响应诊断=%q", got)
	}
}

// TestHexHead 验证原始帧前缀输出的截断与边界。
func TestHexHead(t *testing.T) {
	data := []byte{0x1f, 0x8b, 0x08, 0x00}
	if got := wup.HexHead(data, 2); got != "1f8b" {
		t.Fatalf("HexHead(2)=%q", got)
	}
	if got := wup.HexHead(data, 32); got != "1f8b0800" {
		t.Fatalf("HexHead 越界应截断到实际长度: %q", got)
	}
	if got := wup.HexHead(nil, 8); got != "" {
		t.Fatalf("空数据=%q", got)
	}
	if got := wup.HexHead(data, 0); got != "" {
		t.Fatalf("长度为 0=%q", got)
	}
}