在chrome扩展中获取YouTube通道ID

// 在manifest.json文件中添加必要的权限和API密钥
{
  "manifest_version": 2,
  "name": "YouTube Channel ID",
  "version": "1.0",
  "permissions": [
    "https://www.googleapis.com/*"
  ],
  "background": {
    "scripts": ["background.js"],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "api_key": "YOUR_API_KEY"
}

// background.js文件中的代码
chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
  if (request.action === "getChannelID") {
    var username = request.username;
    var apiKey = "YOUR_API_KEY";
    var url = "https://www.googleapis.com/youtube/v3/channels?part=id&forUsername=" + username + "&key=" + apiKey;

    fetch(url)
      .then(response => response.json())
      .then(data => {
        var channelId = data.items[0].id;
        sendResponse({ channelId: channelId });
      })
      .catch(error => {
        console.error(error);
        sendResponse({ error: error.message });
      });

    return true; // 异步发送响应
  }
});

// popup.js文件中的代码
document.addEventListener("DOMContentLoaded", function() {
  var button = document.getElementById("getChannelIDButton");
  button.addEventListener("click", function() {
    chrome.tabs.query({ active: true, currentWindow: true }, function(tabs) {
      var tab = tabs[0];
      chrome.tabs.sendMessage(tab.id, { action: "getChannelID", username: "YOUR_YOUTUBE_USERNAME" }, function(response) {
        if (response.error) {
          console.error(response.error);
        } else {
          console.log("Channel ID: " + response.channelId);
        }
      });
    });
  });
});