//go:debug randseednop=0

package algos

import (
	"encoding/hex"
	"math/rand"
	"testing"
)

// 固定输入 + 固定时间戳的 golden 测试：签名算法被改坏时在此最先失败。
// 基准值取自当前实现；有意修改算法后用相同输入重新生成并更新期望值。
// 8404 内嵌随机数且走全局 math/rand，Go 1.25 起 rand.Seed 默认是 no-op，
// 故用 //go:debug randseednop=0 恢复其钉死随机序列的旧语义。
// x-argus 的 protobuf 编码按 map 迭代顺序输出（protobuf.go:385），天然
// 不确定，无法全量 golden，只测其内部的确定性哈希层。

const (
	goldenParams = "aid=1967&app_name=fanqie_novel&device_id=1234567890123456&version_name=5.9.5"
	goldenStub   = "d41d8cd98f00b204e9800998ecf8427e"
	goldenCookie = "install_id=728944090949322; device_id=1234567890123456"
	goldenSecDev = "1234567890123456"
	goldenAID    = 1967
	goldenLcID   = 1611921764
)

// var：Sign2 需要 *int64，不能对常量取址
var goldenTS = int64(1700000000)

func goldenArgs() (string, string, string, string, int, int, string, int, int, *int64) {
	return goldenParams, goldenStub, goldenSecDev, goldenCookie,
		goldenAID, goldenLcID, "v04.06.01-ml-android", 135004672, 0, &goldenTS
}

func assertGolden(t *testing.T, name string, got map[string]string, want map[string]string) {
	t.Helper()
	for k, v := range want {
		if got[k] != v {
			t.Errorf("%s %s = %q, want %q", name, k, got[k], v)
		}
	}
}

func TestGorgonSign2Golden(t *testing.T) {
	GlobalAlgorithmSwitcher.SwitchAlgorithm("gorgon")
	assertGolden(t, "gorgon", Sign2(goldenArgs()), map[string]string{
		"x-gorgon":        "0404b0d30000bbd9e75fe1edb046d324b7853694a6177ca72d0a",
		"x-khronos":       "1700000000",
		"x-ss-req-ticket": "1700000000000",
	})
}

func TestAlgo8404Sign2Golden(t *testing.T) {
	rand.Seed(1)
	GlobalAlgorithmSwitcher.SwitchAlgorithm("8404")
	defer GlobalAlgorithmSwitcher.SwitchAlgorithm("gorgon")
	assertGolden(t, "8404", Sign2(goldenArgs()), map[string]string{
		"X-Gorgon":        "8404210f00008eec413318e9f810571e96fca6fb4a0f497e78e5",
		"X-Khronos":       "1700000000",
		"X-SS-REQ-Ticket": "1700000000000",
	})
}

func TestLadonGolden(t *testing.T) {
	// 固定 randomBytes，绕开 crypto/rand
	got := LadonEncrypt(goldenTS, goldenLcID, goldenAID, []byte{0xde, 0xad, 0xbe, 0xef})
	if want := "3q2+7/6PK4T/ZqM1zu2AIWFdXW2D9gdHrXRfOb02lxi6GnYm"; got != want {
		t.Errorf("ladon = %q, want %q", got, want)
	}
}

func TestArgusHashGolden(t *testing.T) {
	if got := hex.EncodeToString(GetBodyHash(goldenStub)); got != "9c840df1aec0" {
		t.Errorf("bodyHash = %s, want 9c840df1aec0", got)
	}
	if got := hex.EncodeToString(GetQueryHash(goldenParams)); got != "58bc068af10b" {
		t.Errorf("queryHash = %s, want 58bc068af10b", got)
	}
}