// Command qoder-wasm-probe 评测 `qoder-auth-wasm.wasm` 能否被**纯 Go** wasm
// 运行时（wazero，无 JS 引擎）驱动，并给出它实际需要宿主提供哪些能力。
//
// 这是**取证/评测工具**，不是生产代码：它不注册进网关，也不被内核 import。
// 主仓的 go.mod **不包含** wazero —— 本目录是独立 module。
//
// 为什么需要它：qoder 的加密推理端点头由该 wasm 生成，
// 而 wasm 是 wasm-bindgen 产物（31 个 import 全部来自一个 JS glue 模块）。
// "能不能实例化" 与 "能不能真正跑出鉴权头" 是两件事 —— 上游参考甚至没有
// 提供那份 JS glue（手写了 706 行替代），所以必须实测，不能推断。
//
// 用法：
//
//	go run . -wasm /path/to/qoder-auth-wasm.wasm [-json]
//
// 退出码：0 = 三级证据全部通过；1 = 任一环节失败（详见输出）。
package main

import (
	"context"
	"crypto/rand"
	"encoding/binary"
	"encoding/json"
	"flag"
	"fmt"
	"math"
	"os"
	"sort"
	"time"

	"github.com/tetratelabs/wazero"
	"github.com/tetratelabs/wazero/api"
)

const importModule = "./qoder_auth_wasm_bg.js"

type probe struct {
	ctx    context.Context
	rt     wazero.Runtime
	mod    api.Module
	hits   map[string]int
	order  []string
	warns  []string
	strict bool
	repeat int
}

// ---- JS-ish 值模型 -------------------------------------------------------
//
// wasm-bindgen 的 ABI 把 JS 值当作整数索引传进导出表。纯 Go 没有这张表，
// 宿主必须自己模拟。qoder 模块实际用到的形状只有三种：
//   1. Uint8Array  —— 字节缓冲
//   2. Map         —— requestresult_headers 的产物
//   3. crypto 对象 —— 只用来喂 getRandomValues（见 C 类 import）

type (
	undefined struct{}
	u8arr     []byte
	jsMap     struct{ keys, vals []string }
	cryptoObj struct{}
)

// wasm-bindgen 把索引 0..1027 保留给 undefined/null/true/false 等哨兵。
const sentinelN = 1028

func newHeap() []interface{} {
	o := make([]interface{}, sentinelN, 4096)
	for i := range o {
		o[i] = undefined{}
	}
	o[1024], o[1025], o[1026], o[1027] = undefined{}, nil, true, false
	return o
}

func main() {
	wasmPath := flag.String("wasm", "",
		"qoder-auth-wasm.wasm 路径（必填）")
	asJSON := flag.Bool("json", false, "以 JSON 输出结果")
	repeat := flag.Int("repeat", 1, "重复调用 prepareInferRequest 的次数（测实例复用）")
	strict := flag.Bool("strict", false,
		"任何未实现的 import 被调用即失败（默认只告警）")
	flag.Parse()
	if *wasmPath == "" {
		fmt.Fprintln(os.Stderr, "-wasm is required")
		os.Exit(2)
	}

	p := &probe{ctx: context.Background(), hits: map[string]int{}, strict: *strict, repeat: *repeat}
	res := p.run(*wasmPath)

	if *asJSON {
		enc := json.NewEncoder(os.Stdout)
		enc.SetIndent("", "  ")
		enc.Encode(res)
	} else {
		p.report(res)
	}
	if !res.OK() {
		os.Exit(1)
	}
}

type result struct {
	WasmPath         string            `json:"wasm_path"`
	WasmSize         int               `json:"wasm_size"`
	Imports          int               `json:"imports"`
	Exports          int               `json:"exports"`
	Instantiated     bool              `json:"instantiated"`
	CallsAtInstall   int               `json:"calls_at_instantiate"`
	AuthFields       map[string]any    `json:"generate_runtime_auth_fields"`
	AuthFieldLens    map[string]int    `json:"auth_field_lengths"`
	AuthErr          string            `json:"auth_error,omitempty"`
	InferURL         string            `json:"infer_url,omitempty"`
	InferBodyLen     int               `json:"infer_body_len"`
	InferHeaders     map[string]string `json:"infer_headers,omitempty"`
	InferErr         string            `json:"infer_error,omitempty"`
	ImportHits       map[string]int    `json:"import_hits"`
	NeverCalled      []string          `json:"imports_never_called"`
	UnimplementedHit []string          `json:"unimplemented_imports_hit,omitempty"`
	Warnings         []string          `json:"warnings,omitempty"`
	// MemPages 是跑完三级调用后 wasm 线性内存的页数（1 页 = 64 KiB）。
	MemPages  uint32  `json:"mem_pages"`
	Repeat    int     `json:"repeat"`
	ElapsedMS float64 `json:"elapsed_ms"`
}

func (r result) OK() bool {
	return r.Instantiated && r.AuthErr == "" && r.InferErr == ""
}

func (p *probe) heap() []byte { b, _ := p.mod.Memory().Read(0, p.mod.Memory().Size()); return b }

func (p *probe) readStr(ptr, ln uint32) string {
	if b, ok := p.mod.Memory().Read(ptr, ln); ok {
		return string(b)
	}
	return ""
}

func (p *probe) warn(format string, a ...any) {
	msg := fmt.Sprintf(format, a...)
	p.warns = append(p.warns, msg)
	fmt.Fprintln(os.Stderr, "warn: "+msg)
}

func (p *probe) run(path string) result {
	res := result{WasmPath: path, ImportHits: map[string]int{}}
	t0 := time.Now()

	b, err := os.ReadFile(path)
	if err != nil {
		res.InferErr = err.Error()
		return res
	}
	res.WasmSize = len(b)

	p.rt = wazero.NewRuntime(p.ctx)
	defer p.rt.Close(p.ctx)

	cm, err := p.rt.CompileModule(p.ctx, b)
	if err != nil {
		res.InferErr = "compile: " + err.Error()
		return res
	}
	imports := cm.ImportedFunctions()
	res.Imports = len(imports)
	res.Exports = len(cm.ExportedFunctions())

	// ---- 宿主模块：31 个 import 的纯 Go 实现 ----
	host := p.rt.NewHostModuleBuilder(importModule)
	for _, f := range imports {
		_, name, _ := f.Import()
		params, results := f.ParamTypes(), f.ResultTypes()
		host.NewFunctionBuilder().
			WithGoModuleFunction(api.GoModuleFunc(p.impl(name)), params, results).
			Export(name)
	}
	if _, err := host.Instantiate(p.ctx); err != nil {
		res.InferErr = "host module: " + err.Error()
		return res
	}

	p.mod, err = p.rt.InstantiateModule(p.ctx, cm, wazero.NewModuleConfig().WithName("qoder"))
	if err != nil {
		res.InferErr = "instantiate: " + err.Error()
		return res
	}
	res.Instantiated = true
	res.CallsAtInstall = len(p.order) // 实例化阶段真实调用次数

	p.level2(&res)
	if res.AuthErr == "" {
		for i := 0; i < p.repeat; i++ {
			p.level3(&res)
			if res.InferErr != "" {
				res.InferErr = fmt.Sprintf("iteration %d/%d: %s", i+1, p.repeat, res.InferErr)
				break
			}
		}
	}

	res.ElapsedMS = float64(time.Since(t0).Microseconds()) / 1000
	if mem := p.mod.Memory(); mem != nil {
		res.MemPages = mem.Size() / 65536
	}
	res.ImportHits = p.hits
	res.NeverCalled = p.neverCalled(imports)
	res.Warnings = p.warns
	return res
}

// ---- 三级证据 ------------------------------------------------------------

// level2: generate_runtime_auth_fields —— 第一次真实调用。
func (p *probe) level2(res *result) {
	payload := `{"uid":"probe-uid","security_oauth_token":"probe-token",` +
		`"organization_id":"","organization_tags":[],"data_policy_agreed":false}`
	ptr, ln := p.writeString(payload)
	raw, err := p.callString("generate_runtime_auth_fields", uint64(ptr), uint64(ln))
	if err != nil {
		res.AuthErr = err.Error()
		return
	}
	var fields map[string]any
	if err := json.Unmarshal([]byte(raw), &fields); err != nil {
		res.AuthErr = "non-JSON output: " + err.Error()
		return
	}
	res.AuthFields = map[string]any{}
	res.AuthFieldLens = map[string]int{}
	for k, v := range fields {
		// 只暴露类型与长度：字段本身是敏感材料，不该进日志。
		switch s := v.(type) {
		case string:
			res.AuthFields[k] = fmt.Sprintf("<string len=%d>", len(s))
			res.AuthFieldLens[k] = len(s)
		default:
			res.AuthFields[k] = fmt.Sprintf("<%T>", v)
			res.AuthFieldLens[k] = 0
		}
	}
}

// level3: qodercontext_new + prepareInferRequest —— 产出真实加密请求。
func (p *probe) level3(res *result) {
	userInfo := `{"uid":"probe-uid","encrypt_user_info":"probe","key":"probe",` +
		`"organization_id":"","organization_tags":[],"data_policy_agreed":false}`
	meta := `{"client_type":"10","business_product":"qoder",` +
		`"business_type":"default","scene":"chat"}`

	mp, ml := p.writeString("probe-machine-uuid")
	vp, vl := p.writeString("1.1.49")
	up, ul := p.writeString(userInfo)
	tp, tl := p.writeString(meta)

	sp := p.stackPtr()
	_, err := p.export("qodercontext_new").Call(p.ctx, uint64(sp),
		uint64(mp), uint64(ml), uint64(vp), uint64(vl),
		uint64(up), uint64(ul), uint64(tp), uint64(tl))
	v := p.dv()
	ctxPtr := int32(v.u32(sp))
	isErr := int32(v.u32(sp + 8))
	errIdx := int32(v.u32(sp + 4))
	p.stackFree()
	if err != nil || isErr != 0 {
		res.InferErr = fmt.Sprintf("qodercontext_new err=%v isErr=%d obj=%v",
			err, isErr, p.getObj(uint32(errIdx)))
		return
	}

	hp, hl := p.writeString("api2.qoder.sh")
	bp, bl := p.writeString(`{"messages":[{"role":"user","content":"hi"}]}`)
	kp, kl := p.writeString("qfmodel")
	skp, skl := p.writeString("system")

	sp2 := p.stackPtr()
	_, err = p.export("qodercontext_prepareInferRequest").Call(p.ctx, uint64(sp2),
		uint64(ctxPtr), uint64(hp), uint64(hl), uint64(bp), uint64(bl),
		uint64(kp), uint64(kl), uint64(skp), uint64(skl))
	v2 := p.dv()
	resPtr := int32(v2.u32(sp2))
	rErr := int32(v2.u32(sp2 + 8))
	rErrIdx := int32(v2.u32(sp2 + 4))
	p.stackFree()
	if err != nil || rErr != 0 {
		res.InferErr = fmt.Sprintf("prepareInferRequest err=%v isErr=%d obj=%v",
			err, rErr, p.getObj(uint32(rErrIdx)))
		return
	}

	hdrIdx, _ := p.export("requestresult_headers").Call(p.ctx, uint64(uint32(resPtr)))
	switch hm := p.getObj(uint32(hdrIdx[0])).(type) {
	case jsMap:
		res.InferHeaders = map[string]string{}
		for i := range hm.keys {
			k, val := hm.keys[i], hm.vals[i]
			// Authorization 是 WASM 产出的签名头：只报形状，不回显载荷。
			if len(val) > 24 {
				res.InferHeaders[k] = val[:24] + fmt.Sprintf("…<len=%d>", len(val))
			} else {
				res.InferHeaders[k] = val
			}
		}
	default:
		res.InferErr = fmt.Sprintf("requestresult_headers -> %T (expected jsMap)", hm)
	}

	res.InferURL = p.resultString(resPtr, "requestresult_url")
	body := p.resultString(resPtr, "requestresult_body")
	res.InferBodyLen = len(body)
	res.Repeat = p.repeat
}

func (p *probe) report(r result) {
	fmt.Printf("wasm       : %s\n", r.WasmPath)
	fmt.Printf("size       : %d bytes\n", r.WasmSize)
	fmt.Printf("imports    : %d (all from %q)\n", r.Imports, importModule)
	fmt.Printf("exports    : %d\n", r.Exports)
	fmt.Printf("instantiate: %v  calls-at-instantiate=%d\n", r.Instantiated, r.CallsAtInstall)

	fmt.Println("\n-- LEVEL 2: generate_runtime_auth_fields --")
	if r.AuthErr != "" {
		fmt.Println("  FAILED:", r.AuthErr)
	} else {
		ks := make([]string, 0, len(r.AuthFields))
		for k := range r.AuthFields {
			ks = append(ks, k)
		}
		sort.Strings(ks)
		for _, k := range ks {
			fmt.Printf("  %-20s %s\n", k, r.AuthFields[k])
		}
	}

	fmt.Println("\n-- LEVEL 3: qodercontext_new + prepareInferRequest --")
	if r.InferErr != "" {
		fmt.Println("  FAILED:", r.InferErr)
	} else {
		fmt.Printf("  url  = %s\n", r.InferURL)
		fmt.Printf("  body = %d bytes (encrypted, not logged)\n", r.InferBodyLen)
		for _, k := range sortedKeys(r.InferHeaders) {
			fmt.Printf("  hdr  %-20s %s\n", k, r.InferHeaders[k])
		}
	}

	fmt.Printf("\n-- IMPORT USAGE (%d of %d touched) --\n", len(r.ImportHits), r.Imports)
	for _, k := range sortedKeys(r.ImportHits) {
		fmt.Printf("  %-50s %d\n", k, r.ImportHits[k])
	}
	fmt.Printf("  never called: %d\n", len(r.NeverCalled))
	for _, n := range r.NeverCalled {
		fmt.Printf("    %s\n", n)
	}
	if len(r.Warnings) > 0 {
		fmt.Printf("\n-- WARNINGS (%d) --\n", len(r.Warnings))
		for _, w := range r.Warnings {
			fmt.Printf("  %s\n", w)
		}
	}
	fmt.Printf("\nRESULT: %s\n", map[bool]string{true: "PASS", false: "FAIL"}[r.OK()])
}

// ---- wasm-bindgen ABI 助手（照 upstream src/qoder-wasm.ts 的语义）---------

func (p *probe) export(n string) api.Function {
	f := p.mod.ExportedFunction(n)
	if f == nil {
		panic("missing export " + n)
	}
	return f
}

func (p *probe) dv() dataView {
	b, _ := p.mod.Memory().Read(0, p.mod.Memory().Size())
	return dataView(b)
}

type dataView []byte

func (d dataView) u32(off uint32) uint32 { return binary.LittleEndian.Uint32(d[off:]) }

func (p *probe) stackPtr() uint32 {
	out, _ := p.export("__wbindgen_add_to_stack_pointer").Call(p.ctx, api.EncodeI32(-16))
	return uint32(api.DecodeI32(out[0]))
}

func (p *probe) stackFree() {
	p.export("__wbindgen_add_to_stack_pointer").Call(p.ctx, api.EncodeI32(16))
}

func (p *probe) writeString(s string) (uint32, uint32) {
	b := []byte(s)
	out, err := p.export("__wbindgen_export2").Call(p.ctx, uint64(len(b)), 1)
	if err != nil {
		panic(err)
	}
	ptr := uint32(out[0])
	p.mod.Memory().Write(ptr, b)
	return ptr, uint32(len(b))
}

// callString 对应「返回值布局 = ptr/len/valIdx/isErr」那一类函数。
func (p *probe) callString(name string, args ...uint64) (string, error) {
	sp := p.stackPtr()
	defer p.stackFree()
	if _, err := p.export(name).Call(p.ctx, append([]uint64{uint64(sp)}, args...)...); err != nil {
		return "", fmt.Errorf("%s: %w", name, err)
	}
	v := p.dv()
	ptr, ln := int32(v.u32(sp)), int32(v.u32(sp+4))
	if isErr := int32(v.u32(sp + 12)); isErr != 0 {
		return "", fmt.Errorf("%s: error idx=%d (%v)", name, int32(v.u32(sp+8)), p.getObj(v.u32(sp+8)))
	}
	return p.readStr(uint32(ptr), uint32(ln)), nil
}

// resultString 对应 `requestresult_url|body`：参数顺序是 (栈指针, ptr)。
func (p *probe) resultString(result int32, name string) string {
	sp := p.stackPtr()
	defer p.stackFree()
	if _, err := p.export(name).Call(p.ctx, uint64(sp), uint64(uint32(result))); err != nil {
		p.warn("%s: %v", name, err)
		return ""
	}
	v := p.dv()
	ptr, ln := int32(v.u32(sp)), int32(v.u32(sp+4))
	if ptr == 0 {
		return ""
	}
	return p.readStr(uint32(ptr), uint32(ln))
}

// ---- 对象堆 --------------------------------------------------------------

var objects = newHeap()

func pushObj(v any) uint32 {
	objects = append(objects, v)
	return uint32(len(objects) - 1)
}

func (p *probe) getObj(i uint32) any {
	if int(i) < len(objects) {
		return objects[i]
	}
	return undefined{}
}

var dbg = os.Getenv("PROBE_DBG") != ""

func (p *probe) takeObj(i uint32) {
	if dbg && i >= sentinelN {
		fmt.Printf("[dbg] drop %d (was %T)\n", i, p.getObj(i))
	}
	if i >= sentinelN && int(i) < len(objects) {
		objects[i] = undefined{}
	}
}

func (p *probe) asBytes(i uint32) u8arr {
	switch v := p.getObj(i).(type) {
	case u8arr:
		return v
	case []byte:
		return u8arr(v)
	}
	p.warn("heap[%d] is %T, expected Uint8Array", i, p.getObj(i))
	return nil
}

// ---- 31 个 import 的纯 Go 实现 -------------------------------------------
//
// 分四类（与 docs/qoder-wasm-integration.md 的接口映射表对应）：
//   A bindgen 对象表 · B 字节缓冲 · C 随机/时间 · D JS 环境探针

func (p *probe) impl(name string) func(context.Context, api.Module, []uint64) {
	mark := func(n string) {
		p.hits[n]++
		if len(p.order) < 4096 {
			p.order = append(p.order, n)
		}
	}
	wrap := func(f func(s []uint64)) func(context.Context, api.Module, []uint64) {
		return func(_ context.Context, _ api.Module, s []uint64) {
			mark(name)
			defer func() {
				if r := recover(); r != nil {
					p.warn("host func %s panicked: %v", name, r)
				}
			}()
			f(s)
		}
	}
	// 未在 auth 路径上验证过的 import：被调用就是新信息，必须记下来。
	unimpl := func(what string) func(context.Context, api.Module, []uint64) {
		return wrap(func(s []uint64) {
			p.warn("import %s reached (%s) -- not exercised by the auth path", name, what)
			if p.strict {
				panic("unimplemented import reached: " + name)
			}
		})
	}

	switch name {
	// -- A: bindgen 对象表 ------------------------------------------------
	case "__wbindgen_object_drop_ref":
		// ⚠️ 必须**不释放**槽位：实测该模块会 drop 一个 Map 之后继续用同一索引
		// 调 set（日志见 docs）。wasm-bindgen 新版把 drop 退化为空操作
		// （externref 表交给 JS GC），因此这里保持 no-op —— 代价是索引只增不回收。
		return wrap(func(s []uint64) {})
	case "__wbindgen_object_clone_ref":
		return wrap(func(s []uint64) { s[0] = uint64(pushObj(p.getObj(uint32(s[0])))) })
	case "__wbindgen_cast_0000000000000001": // wasm slice -> Uint8Array
		return wrap(func(s []uint64) {
			a, e := uint32(s[0]), uint32(s[1])
			dst := make(u8arr, e)
			copy(dst, p.heap()[a:a+e])
			s[0] = uint64(pushObj(dst))
		})
	case "__wbindgen_cast_0000000000000002": // wasm str -> JS string
		return wrap(func(s []uint64) {
			s[0] = uint64(pushObj(p.readStr(uint32(s[0]), uint32(s[1]))))
		})

	// -- B: 字节缓冲 ------------------------------------------------------
	case "__wbg_new_with_length_9cedd08484b73942":
		return wrap(func(s []uint64) { s[0] = uint64(pushObj(make(u8arr, uint32(s[0])))) })
	case "__wbg_length_0c32cb8543c8e4c8":
		return wrap(func(s []uint64) { s[0] = uint64(len(p.asBytes(uint32(s[0])))) })
	case "__wbg_subarray_0f98d3fb634508ad":
		return wrap(func(s []uint64) {
			b := p.asBytes(uint32(s[0]))
			lo, hi := uint32(s[1]), uint32(s[2])
			if hi > uint32(len(b)) {
				hi = uint32(len(b))
			}
			if lo > hi {
				lo = hi
			}
			s[0] = uint64(pushObj(b[lo:hi]))
		})
	case "__wbg_set_08463b1df38a7e29":
		// 两种形态：Uint8Array.set(src, off) 与 Map.set()（headers 集合）。
		return wrap(func(s []uint64) {
			switch dst := p.getObj(uint32(s[0])).(type) {
			case jsMap:
				k, ok := p.getObj(uint32(s[1])).(string)
				if !ok {
					k = fmt.Sprint(p.getObj(uint32(s[1])))
				}
				dst.keys = append(dst.keys, k)
				dst.vals = append(dst.vals, fmt.Sprint(p.getObj(uint32(s[2]))))
				objects[s[0]] = dst
			case u8arr:
				src := p.asBytes(uint32(s[1]))
				off := int(uint32(s[2]))
				if off > len(dst) {
					return
				}
				copy(dst[off:], src)
			default:
				if dbg {
					fmt.Printf("[dbg] set arg0=%d type=%T arg2=%d\n", s[0], p.getObj(uint32(s[0])), s[2])
				}
				p.warn("set on unsupported %T", p.getObj(uint32(s[0])))
			}
		})
	case "__wbg_prototypesetcall_3e05eb9545565046":
		return wrap(func(s []uint64) {
			a, e := uint32(s[0]), uint32(s[1])
			copy(p.heap()[a:a+e], p.asBytes(uint32(s[2])))
		})
	case "__wbg_new_99cabae501c0a8a0": // new Map()
		return wrap(func(s []uint64) {
			idx := pushObj(jsMap{})
			if dbg {
				fmt.Printf("[dbg] newMap -> %d\n", idx)
			}
			s[0] = uint64(idx)
		})

	// -- C: 随机源与时间 --------------------------------------------------
	//
	// ⚠️ 两个 getRandomValues 的签名**方向相反**（upstream 注释里踩过的坑）：
	//   _d49329ff89a07af1 = (wasmPtr, len)  -> 直接写 wasm 内存
	//   _c44a50d8cfdaebeb = (cryptoObjIdx, u8arrIdx) -> 调 JS 对象的方法
	// 写反会得到 Rust panic `unreachable`。
	case "__wbg_getRandomValues_d49329ff89a07af1":
		return wrap(func(s []uint64) {
			b := make([]byte, uint32(s[1]))
			rand.Read(b)
			p.mod.Memory().Write(uint32(s[0]), b)
		})
	case "__wbg_getRandomValues_c44a50d8cfdaebeb":
		return wrap(func(s []uint64) {
			if _, ok := p.getObj(uint32(s[0])).(cryptoObj); !ok {
				p.warn("getRandomValues(B): arg0 is %T, want cryptoObj", p.getObj(uint32(s[0])))
			}
			if b := p.asBytes(uint32(s[1])); b != nil {
				rand.Read(b)
			}
		})
	case "__wbg_randomFillSync_6c25eac9869eb53c":
		return wrap(func(s []uint64) {
			if b := p.asBytes(uint32(s[1])); b != nil {
				rand.Read(b)
			}
		})
	case "__wbg_now_88621c9c9a4f3ffc":
		return wrap(func(s []uint64) {
			s[0] = math.Float64bits(float64(time.Now().UnixMilli()))
		})

	// -- D: JS / Node 环境探针 --------------------------------------------
	case "__wbg_crypto_38df2bab126b63dc", "__wbg_msCrypto_bd5a034af96bcba6":
		return wrap(func(s []uint64) { s[0] = uint64(pushObj(cryptoObj{})) })
	case "__wbg_static_accessor_GLOBAL_THIS_a1248013d790bf5f",
		"__wbg_static_accessor_GLOBAL_f2e0f995a21329ff":
		return wrap(func(s []uint64) { s[0] = uint64(pushObj(undefined{})) })
	case "__wbg_static_accessor_SELF_24f78b6d23f286ea",
		"__wbg_static_accessor_WINDOW_59fd959c540fe405":
		// 服务端没有 window/self：wasm-bindgen 约定用 0 表示缺席。
		return wrap(func(s []uint64) { s[0] = 0 })
	case "__wbg___wbindgen_is_object_40c5a80572e8f9d3":
		return wrap(func(s []uint64) {
			switch p.getObj(uint32(s[0])).(type) {
			case u8arr, jsMap, cryptoObj:
				s[0] = 1
			}
		})
	case "__wbg___wbindgen_is_string_b29b5c5a8065ba1a":
		return wrap(func(s []uint64) {
			if _, ok := p.getObj(uint32(s[0])).(string); ok {
				s[0] = 1
			}
		})
	case "__wbg___wbindgen_is_undefined_c0cca72b82b86f4d":
		return wrap(func(s []uint64) {
			if _, ok := p.getObj(uint32(s[0])).(undefined); ok {
				s[0] = 1
			}
		})
	case "__wbg___wbindgen_throw_81fc77679af83bc6":
		return wrap(func(s []uint64) {
			p.warn("wasm throw: %s", p.readStr(uint32(s[0]), uint32(s[1])))
		})
	case "__wbg_Error_2e59b1b37a9a34c3":
		return wrap(func(s []uint64) {
			s[0] = uint64(pushObj(fmt.Errorf("%s", p.readStr(uint32(s[0]), uint32(s[1])))))
		})
	case "__wbg_process_44c7a14e11e9f69e", "__wbg_versions_276b2795b1c6a219",
		"__wbg_node_84ea875411254db1", "__wbg_require_b4edbdcf3e2a1ef0",
		"__wbg_call_d578befcc3145dee", "__wbg___wbindgen_is_function_49868bde5eb1e745":
		return unimpl("node/JS 环境探针")
	}
	return unimpl("未知")
}

func (p *probe) neverCalled(imports []api.FunctionDefinition) []string {
	var out []string
	for _, f := range imports {
		_, name, _ := f.Import()
		if p.hits[name] == 0 {
			out = append(out, name)
		}
	}
	sort.Strings(out)
	return out
}

func sortedKeys[V any](m map[string]V) []string {
	ks := make([]string, 0, len(m))
	for k := range m {
		ks = append(ks, k)
	}
	sort.Strings(ks)
	return ks
}