// ==UserScript==
// @name         二手车摆渡人268v自动秒接单
// @namespace    https://tampermonkey.net/
// @version      1.63
// @description  在 dp.268v.com 订单列表中，自动点击并发出提示音。
// @author       you
// @match        https://dp.268v.com/*
// @match        http://dp.268v.com/*
// @grant        none
// @run-at       document-idle
// ==/UserScript==

(function () {
  'use strict';

  // ============ 核心功能 =================================================//

  var CELL_SEL = '.cell';
  var BTN_SEL = '.ui-btn';
  var TARGET_SEL = '.ui-list-btn-wait';
  var CELL_COOLDOWN_MS = 2000;
  var BEEP_COOLDOWN_MS = 400;

  var lastCellClickAt = new WeakMap();
  var lastBeepAt = 0;
  var clickCount = 0;
  var audioCtx = null;

  function dlog() {
    if (window.__dpxDebug === false) return;
    console.log('[dp-268v-auto-free]', Array.prototype.join.call(arguments, ' '));
  }

  function showBadge() {
    if (document.getElementById('__dpx_badge__')) return;
    var el = document.createElement('div');
    el.id = '__dpx_badge__';
    el.textContent = 'DPX';
    el.style.cssText = 'position:fixed;top:8px;right:8px;z-index:999999;'
      + 'padding:4px 10px;border-radius:4px;background:#52c41a;color:#fff;'
      + 'font:12px/1.4 -apple-system,Segoe UI,sans-serif;'
      + 'box-shadow:0 2px 8px rgba(0,0,0,.2);pointer-events:none;opacity:.85;';
    (document.body || document.documentElement).appendChild(el);
  }

  function flashBadge(text, color) {
    var el = document.getElementById('__dpx_badge__');
    if (!el) return;
    var old = el.textContent;
    var oldBg = el.style.background;
    el.textContent = text;
    el.style.background = color;
    setTimeout(function () {
      el.textContent = old;
      el.style.background = oldBg;
    }, 1200);
  }

  function unlockAudio() {
    var Ctx = window.AudioContext || window.webkitAudioContext;
    if (!Ctx) return;
    if (!audioCtx) audioCtx = new Ctx();
    if (audioCtx.state === 'suspended') {
      audioCtx.resume().catch(function(e) {
        dlog('AudioContext resume failed:', e.message);
      });
    }
  }

  ['click', 'keydown', 'pointerdown', 'touchstart'].forEach(function (ev) {
    window.addEventListener(ev, unlockAudio, { once: true, capture: true });
  });

  function beep() {
    // 确保音频上下文可用
    if (!audioCtx) unlockAudio();
    if (!audioCtx || audioCtx.state !== 'running') return;

    var now = performance.now();
    if (now - lastBeepAt < BEEP_COOLDOWN_MS) return;
    lastBeepAt = now;

    try {
      var t = audioCtx.currentTime;

      // 增益节点（4倍放大，突破浏览器默认响度限制）
      var gain = audioCtx.createGain();
      gain.gain.setValueAtTime(0.0001, t);
      gain.gain.exponentialRampToValueAtTime(4.0, t + 0.01);
      gain.gain.exponentialRampToValueAtTime(0.0001, t + 0.35);

      // 动态压缩（防止增益过高导致削峰失真）
      var compressor = audioCtx.createDynamicsCompressor();
      compressor.threshold.value = -10;
      compressor.ratio.value = 4;
      compressor.attack.value = 0.003;
      compressor.release.value = 0.1;

      gain.connect(compressor);
      compressor.connect(audioCtx.destination);

      // 双音叠加，使用方波增强穿透力
      [660, 990].forEach(function (freq, i) {
        var o = audioCtx.createOscillator();
        o.type = 'square';
        o.frequency.value = freq;
        o.connect(gain);
        o.start(t + (i === 1 ? 0.04 : 0));
        o.stop(t + 0.4);
      });

      // 第二次叠加，提升声音厚度
      setTimeout(function() {
        if (!audioCtx || audioCtx.state !== 'running') return;
        var t2 = audioCtx.currentTime;
        [660, 990].forEach(function (freq) {
          var o = audioCtx.createOscillator();
          o.type = 'square';
          o.frequency.value = freq * 1.5; // 高八度
          o.connect(gain);
          o.start(t2);
          o.stop(t2 + 0.2);
        });
      }, 100);
    } catch (e) {
      dlog('beep error', e.message);
    }
  }

  function clickBtn(uiBtn) {
    var span = uiBtn.querySelector(TARGET_SEL);
    var target = span || uiBtn;
    try {
      target.dispatchEvent(new MouseEvent('click', {
        bubbles: true,
        cancelable: true,
        view: window
      }));
    } catch (e) {
      dlog('dispatch click failed', e.message);
      try {
        target.click();
      } catch (e2) {
        dlog('native click failed', e2.message);
      }
    }
  }

  function findTargets(root) {
    var scope = (root && root.querySelectorAll) ? root : document;
    return scope.querySelectorAll(TARGET_SEL);
  }

  function process(target) {
    if (!(target instanceof HTMLElement)) return;
    var uiBtn = target.closest(BTN_SEL);
    if (!uiBtn) return;
    var cell = uiBtn.closest(CELL_SEL);
    if (!cell) return;
    var now = performance.now();
    var last = lastCellClickAt.get(cell);
    if (last && now - last < CELL_COOLDOWN_MS) return;
    lastCellClickAt.set(cell, now);
    clickCount++;
    clickBtn(uiBtn);
    beep();
    dlog('click #' + clickCount, target.textContent.trim().slice(0, 20));
    flashBadge('已自动点击 #' + clickCount, '#1890ff');
  }

  function scanAndProcess(root) {
    var targets = findTargets(root);
    for (var i = 0; i < targets.length; i++) {
      process(targets[i]);
    }
  }

  function startCore() {
    showBadge();
    dlog('init', location.href, '目标数:', document.querySelectorAll(TARGET_SEL).length);
    scanAndProcess();
    var observer = new MutationObserver(function (records) {
      for (var r = 0; r < records.length; r++) {
        var nodes = records[r].addedNodes;
        for (var n = 0; n < nodes.length; n++) {
          if (nodes[n].nodeType !== 1) continue;
          scanAndProcess(nodes[n]);
        }
      }
    });
    observer.observe(document.documentElement, { childList: true, subtree: true });
    dlog('MutationObserver 已挂上');
  }

  // ============ 入口 ====================================================//

  startCore();
})();