Fake_Purchase

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一键批量卡单
当前为 2024-09-13 提交的版本，查看最新版本。
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// ==UserScript==
// @name:zh-CN      卡单小工具
// @name            Fake_Purchase
// @namespace       https://blog.chrxw.com
// @supportURL      https://blog.chrxw.com/scripts.html
// @contributionURL https://afdian.net/@chr233
// @version         1.4
// @description     一键批量卡单
// @description:zh-CN  一键批量卡单
// @author          Chr_
// @include         https://checkout.steampowered.com/checkout/*
// @license         AGPL-3.0
// @icon            https://blog.chrxw.com/favicon.ico
// @grant           GM_addStyle
// ==/UserScript==

// 初始化
(() => {
  "use strict";

  const sessionId = g_sessionID;

  let fpValue = parseInt(localStorage.getItem("fpValue") ?? "5");
  if (fpValue !== fpValue) {
    fpValue = 5;
  }

  if (sessionId  ) {
    const logContainer = genTextArea();
    function log(msg) {
      if (logContainer.value) {
        logContainer.value += "\n";
      }
      logContainer.value += msg;
      logContainer.scrollTop = logContainer.scrollHeight;
      console.log(msg);
    }

    setTimeout(() => {
      const container = document.getElementById("col_right_payment_info");

      const div1 = genDiv("block_content fp_div");
      const span = genSpan("卡单次数");
      const input = genInput(fpValue);
      const btn = genBtn("给我卡", async () => {
        try {
          btn.disabled = true;
          localStorage.setItem("fpValue", input.value);

          for (let i = 1; i <= input.value; i++) {
            try {
              const transId =  await initTransaction();
              log(`${i} 初始化付款成功`);
              await asyncDelay(800);
              const price = await getFinalPrice(transId);
              log(`${i} 购物车总价 ${price}`);
              await cancelTransaction(transId);
              log(`${i} 取消付款成功`);
            } catch (err) {
              log(`${i} ${err}`);
              await asyncDelay(2000);
            } finally {
              await asyncDelay(800);
            }
          }
        } catch (err) {
          log(err);
        } finally {
          btn.disabled = false;
        }
      })
      div1.appendChild(span);
      div1.appendChild(input);
      div1.appendChild(btn);
      container.appendChild(div1);

      const div2 = genDiv("block_content fp_div2");
      div2.appendChild(logContainer);
      container.appendChild(div2);
    }, 500);
  } else {
    console.log("sessionId或者cartGid为null")
  }

  function genBtn(text, foo) {
    const btn = document.createElement("button");
    btn.textContent = text;
    btn.addEventListener("click", foo);
    return btn;
  }
  function genDiv(cls) {
    const div = document.createElement("div");
    div.className = cls;
    return div;
  }
  function genSpan(name) {
    const span = document.createElement("span");
    span.textContent = name;
    return span;
  }
  function genInput(value) {
    const input = document.createElement("input");
    input.type = "number";
    input.min = 1;
    input.max = 99;
    input.value = value;
    return input;
  }
  function genTextArea() {
    return document.createElement("textarea");
  }
  function asyncDelay(ms) {
    return new Promise((resolve, _) => {
      setTimeout(resolve, ms);
    })
  }

  // 初始化付款
  async function initTransaction() {
    return new Promise((resolve, reject) => {
      fetch(
        `https://checkout.steampowered.com/checkout/inittransaction/`,
        {
          method: "POST",
          credentials: "include",
          body: `gidShoppingCart=-1&gidReplayOfTransID=-1&bUseAccountCart=-1&PaymentMethod=steamaccount&sessionid=${sessionId}`,
          headers: {
            "content-type":
              "application/x-www-form-urlencoded; charset=UTF-8",
          },
        }
      )
        .then(response => {
          response.json().then(json => {
            const { success, transid } = json;
            if (success === 1) {
              resolve(transid);
            } else {
              reject("初始化付款失败");
            }
          })
        })
        .catch((err) => {
          console.error(err);
          reject(`初始化付款失败 ${err}`);
        });
    });
  }

  function getFinalPrice(transId) {
    return new Promise((resolve, reject) => {
      fetch(
        `https://checkout.steampowered.com/checkout/getfinalprice/?count=1&transid=${transId}&purchasetype=self&microtxnid=-1&cart=-1&gidReplayOfTransID=-1`,
        {
          method: "POST",
          credentials: "include",
          body: `gidShoppingCart=-1&gidReplayOfTransID=-1&PaymentMethod=steamaccount&sessionid=${sessionId}`,
          headers: {
            "content-type":
              "application/x-www-form-urlencoded; charset=UTF-8",
          },
        }
      )
        .then(response => {
          response.json().then(json => {
            const { success, formattedTotal } = json;
            if (success === 1) {
              resolve(formattedTotal);
            } else {
              reject("获取最终价格失败");
            }
          })
        })
        .catch((err) => {
          console.error(err);
          reject(`获取最终价格失败 ${err}`);
        });
    });
  }

  // 取消付款
  function cancelTransaction(transId) {
    return new Promise((resolve, reject) => {
      fetch(
        `https://checkout.steampowered.com/checkout/canceltransaction/`,
        {
          method: "POST",
          credentials: "include",
          body: `transid=${transId}&sessionid=${sessionId}`,
          headers: {
            "content-type":
              "application/x-www-form-urlencoded; charset=UTF-8",
          },
        }
      )
        .then(async (response) => {
          response.json().then(json => {
            const { success, transid } = json;
            if (success === 2) {
              resolve();
            } else {
              reject("取消付款失败");
            }
          })
        })
        .catch((err) => {
          console.error(err);
          reject(`取消付款失败 ${err}`);
        });
    });
  }
})();

GM_addStyle(`
.fp_div > * {
  margin-right: 10px;
}
.fp_div > input {
  width: 50px;
}
.fp_div2 > textarea {
  width: 100%;
  height: 100px;
  font-size: 14px;
  resize: vertical;
}
`);