// Android WebView 环境仿真 (默认 M2102J2SC; 可传设备覆盖参数实现一号一设备)
// overrides = {model, androidVer, vendor, appVer, screenWidth, screenHeight}
function makeEnv(overrides) {
  const ov = overrides || {};
  const MODEL = ov.model || 'M2102J2SC';
  const ANDROID_VER = ov.androidVer || '11';
  const VENDOR = ov.vendor || 'xiaomi';
  const APP_VER = ov.appVer || '13.4.22';
  const UA = ov.userAgent || ('Mozilla/5.0 (Linux; Android ' + ANDROID_VER + '; ' + MODEL +
    ' Build/RKQ1.200826.002; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 ' +
    'Chrome/149.0.7827.159 Mobile Safari/537.36 huya adr/' + APP_VER + '/' + VENDOR + '/30');
  // 视口按物理分辨率/3 仿真 (393x851 ≈ 1080x2120 / 2.75)
  const VW = ov.screenWidth ? Math.round(ov.screenWidth / 2.75) : 393;
  const VH = ov.screenHeight ? Math.round(ov.screenHeight / 2.75) : 851;
  const W = globalThis;
  W.screen = {width:VW, height:VH, availWidth:VW, availHeight:VH,
    colorDepth:24, pixelDepth:24, availLeft:0, availTop:0, orientation:{type:'portrait-primary', angle:0}};
  W.devicePixelRatio = 2.75;
  W.innerWidth = VW; W.innerHeight = Math.max(VH - 114, 500); W.outerWidth = VW; W.outerHeight = VH;
  W.location = {href:'https://aq.huya.com/p/safe_auth/pt_auth.html', protocol:'https:', host:'aq.huya.com',
    hostname:'aq.huya.com', port:'', pathname:'/p/safe_auth/pt_auth.html', search:'', hash:'',
    origin:'https://aq.huya.com', toString(){return this.href}};
  W.history = {length:2, state:null, pushState(){}, replaceState(){}, back(){}, go(){}};
  const navProps = {
    userAgent: UA,
    appName:'Netscape', appVersion: UA.replace(/^Mozilla\//, ''),
    platform:'Linux armv8l', language:'zh-CN', languages:['zh-CN','zh','en'],
    cookieEnabled:true, doNotTrack:null, maxTouchPoints:5, hardwareConcurrency:8,
    deviceMemory:8, vendor:'Google Inc.', productSub:'20030107', webdriver:false,
    pdfViewerEnabled:false, javaEnabled(){return false},
    getBattery(){return Promise.resolve({charging:true, level:0.9})},
    userAgentData: {brands:[{brand:'Chromium',version:'149'},{brand:'Google Chrome',version:'149'},{brand:'Not?A_Brand',version:'24'}],
      mobile:true, platform:'Android',
      getHighEntropyValues(){return Promise.resolve({architecture:'arm', bitness:'64', model:MODEL, platformVersion:ANDROID_VER+'.0.0', uaFullVersion:'149.0.7827.159'})}},
    connection: {effectiveType:'4g', downlink:10, rtt:50, saveData:false},
    plugins: {length:0, item(){return null}, namedItem(){return null}},
    mimeTypes: {length:0},
  };
  for (const [k,v] of Object.entries(navProps)) {
    try { Object.defineProperty(W.navigator, k, {value:v, configurable:true}); } catch(e){ try{W.navigator[k]=v}catch(_){} }
  }
  // canvas 2d/webgl 最小仿真
  const glConsts = {RENDERER:0x1F01, VENDOR:0x1F00, VERSION:0x1F02, SHADING_LANGUAGE_VERSION:0x8B8C,
    MAX_TEXTURE_SIZE:0x0D33, MAX_RENDERBUFFER_SIZE:0x84E8, MAX_VIEWPORT_DIMS:0x0D3A};
  function fakeGL(){
    return new Proxy({
      getExtension(){ return {UNMASKED_VENDOR_WEBGL:0x9245, UNMASKED_RENDERER_WEBGL:0x9246}; },
      getParameter(p){
        if (p===0x9245) return 'Qualcomm';
        if (p===0x9246) return 'Adreno (TM) 650';
        if (p===glConsts.MAX_TEXTURE_SIZE) return 16384;
        if (p===glConsts.MAX_VIEWPORT_DIMS) return new Int32Array([16384,16384]);
        return 'WebKit WebGL';
      },
      getContextAttributes(){return {alpha:true, antialias:true, depth:true};},
      createBuffer(){return {}}, bindBuffer(){}, bufferData(){}, createProgram(){return {}},
      attachShader(){}, linkProgram(){}, useProgram(){}, createShader(){return {}},
      shaderSource(){}, compileShader(){}, getShaderParameter(){return true},
      getProgramParameter(){return true}, getSupportedExtensions(){return ['WEBGL_debug_renderer_info']},
      readPixels(x,y,w,h,t,f,buf){ if(buf) buf.fill(128); },
    }, { get(t,p){ if(p in t) return t[p]; if(typeof p==='string' && p.startsWith('on')) return null; return undefined; } });
  }
  const ctx2d = new Proxy({
    fillRect(){}, clearRect(){}, getImageData(x,y,w,h){return {data:new Uint8ClampedArray(w*h*4).fill(128), width:w, height:h}},
    putImageData(){}, createImageData(w,h){return {data:new Uint8ClampedArray(w*h*4), width:w, height:h}},
    setTransform(){}, transform(){}, translate(){}, scale(){}, rotate(){}, save(){}, restore(){},
    beginPath(){}, closePath(){}, moveTo(){}, lineTo(){}, stroke(){}, fill(){}, arc(){}, rect(){}, clip(){},
    createLinearGradient(){return {addColorStop(){}}}, createRadialGradient(){return {addColorStop(){}}},
    fillText(){}, strokeText(){}, measureText(t){return {width:String(t).length*7}},
    isPointInPath(){return false}, drawImage(){}, arcTo(){}, bezierCurveTo(){}, quadraticCurveTo(){},
    createPattern(){return {}}, setLineDash(){}, getLineDash(){return []},
  }, { get(t,p){ if(p in t) return t[p]; if(p==='canvas') return {}; return undefined; } });
  const canvasProto = {
    getContext(type){ 
      if (type === '2d') return ctx2d;
      if (type === 'webgl' || type === 'webgl2' || type === 'experimental-webgl') return fakeGL();
      return null;
    },
    toDataURL(){ return 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg=='; },
    toBlob(cb){ cb && cb(null); },
    addEventListener(){}, removeEventListener(){}, setAttribute(){}, getBoundingClientRect(){return {left:0,top:0,width:300,height:150}},
    style:{}, width:300, height:150,
  };
  W.document = {
    createElement(tag){ const el = Object.assign({}, canvasProto, {tagName:String(tag||'div').toUpperCase(), style:{}, children:[],
      setAttribute(){}, getAttribute(){return null}, appendChild(c){this.children.push(c)}, removeChild(){}, addEventListener(){}, removeEventListener(){},
      classList:{add(){},remove(){},contains(){return false}}, attachShadow(){return {appendChild(){}}}, getBoundingClientRect(){return {left:0,top:0,right:100,bottom:30,width:100,height:30}} });
      return el; },
    createEvent(){return {initEvent(){}}},
    createElementNS(ns, tag){ return this.createElement(tag); },
    createTextNode(t){return {textContent:t}},
    getElementById(){return null}, querySelector(){return null}, querySelectorAll(){return []},
    getElementsByTagName(t){ if(String(t).toLowerCase()==='head') return [this.head]; return []; },
    documentElement:{setAttribute(){}, getAttribute(){return null}, style:{}},
    head:{appendChild(){}}, body:{appendChild(){}},
    cookie:'', referrer:'', title:'pt_auth', domain:'aq.huya.com', readyState:'complete', visibilityState:'visible',
    addEventListener(){}, removeEventListener(){},
  };
  W.localStorage = (()=>{const m={}; return {getItem:k=>m[k]??null,setItem:(k,v)=>m[k]=String(v),removeItem:k=>delete m[k],clear:()=>{},key:i=>Object.keys(m)[i]??null,get length(){return Object.keys(m).length}}})();
  W.sessionStorage = (()=>{const m={}; return {getItem:k=>m[k]??null,setItem:(k,v)=>m[k]=String(v),removeItem:k=>delete m[k],clear:()=>{},key:i=>null,get length(){return 0}}})();
  W.indexedDB = {open(){return {onsuccess:null,onerror:null,onupgradeneeded:null,result:{objectStoreNames:{contains(){return false}},createObjectStore(){return {createIndex(){}}}},set onsuccess(f){setTimeout(()=>{},0)}}}};
  W.performance = W.performance || {now:()=>Date.now(), timeOrigin:Date.now(), timing:{navigationStart:Date.now()}, getEntriesByType(){return []}, mark(){}, measure(){}};
  W.AudioContext = class { constructor(){this.sampleRate=48000; this.destination={}} createOscillator(){return {type:'',frequency:{value:0,setValueAtTime(){}},connect(){},start(){},stop(){}}} createDynamicsCompressor(){return {threshold:{value:0},knee:{value:0},ratio:{value:0},attack:{value:0},release:{value:0},connect(){}}} createAnalyser(){return {frequencyBinCount:1024,getFloatFrequencyData(a){a&&a.fill(-100)}}} createGain(){return {gain:{value:1,setValueAtTime(){}},connect(){}}} createScriptProcessor(){return {connect(){},onaudioprocess:null}} decodeAudioData(){return Promise.resolve({getChannelData(){return new Float32Array(5000)}})} resume(){return Promise.resolve()} close(){return Promise.resolve()} };
  W.webkitAudioContext = W.AudioContext;
  W.OfflineAudioContext = W.AudioContext;
  W.WebGLRenderingContext = {RENDERER:glConsts.RENDERER, VENDOR:glConsts.VENDOR, VERSION:glConsts.VERSION, SHADING_LANGUAGE_VERSION:glConsts.SHADING_LANGUAGE_VERSION, MAX_TEXTURE_SIZE:glConsts.MAX_TEXTURE_SIZE};
  W.RTCPeerConnection = class { createDataChannel(){return {}} createOffer(){return Promise.resolve({})} setLocalDescription(){return Promise.resolve()} close(){} };
  W.webkitRTCPeerConnection = W.RTCPeerConnection;
  W.Notification = {permission:'default'};
  W.permissions = {query(){return Promise.resolve({state:'prompt'})}};
  W.matchMedia = () => ({matches:false, media:'', addListener(){}, removeListener(){}, addEventListener(){}, removeEventListener(){}});
  W.getComputedStyle = () => new Proxy({getPropertyValue:()=>''}, {get(t,p){ if(p in t) return t[p]; return ()=>''; }});
  W.requestAnimationFrame = cb => setTimeout(()=>cb(Date.now()), 16);
  W.cancelAnimationFrame = clearTimeout;
  W.crypto = require('crypto').webcrypto;
  W.TextEncoder = require('util').TextEncoder;
  W.TextDecoder = require('util').TextDecoder;
}
module.exports = { makeEnv };