background.js

// Sample initial domain registry (you can edit or add to this as needed)
const domainRegistry = {
  "https://moodle.tu-darmstadt.de/course/view.php?id=35283":
    "Documents/Uni/WiSe 23/Software and Internet Economics/",
};

function logDebugMessage(message) {
  const timestamp = new Date().toLocaleString();
  chrome.storage.local.get("debugLog", (data) => {
    let debugLog = data.debugLog || [];
    debugLog.push({ timestamp, message });
    chrome.storage.local.set({ debugLog });
  });
}

function suggestFilename(path, suggest) {
  suggest(
    { filename: path, conflictAction: "uniquify" },
    (downloadId) => {
      if (chrome.runtime.lastError) {
        console.error("error: ", chrome.runtime.lastError);
        console.warn(
          `An error occurred: ${chrome.runtime.lastError.message} and ${downloadId}`
        );
        return false;
      } else {
        console.log(`Download started with ID: ${downloadId}`);
        return true;
      }
    }
  );
}

const defaultPath = "Downloads/";

chrome.downloads.onDeterminingFilename.addListener((downloadItem, suggest) => {
  try {
    chrome.storage.local.get(["domainRegistry", "debugMode"], (data) => {
      try {
        const registry = data.domainRegistry;
        console.log(registry);
        const debugMode = data.debugMode;
        console.log(downloadItem.referrer);
        try {
          const domainUrl = new URL(downloadItem.referrer);
        } catch (error) {
          console.log(error);
          suggestFilename(defaultPath + downloadItem.filename, suggest);
          return true;
        }
        console.log(downloadItem);
        console.log(domainUrl);
        const domain = new URL(downloadItem.referrer).href;
        console.log(domain);

        console.log(`Download recognized from ${domain}`);
        console.log(`Checking if website ${domain} is in registry...`);

        var newFilename = "";
        if (registry[domain]) {
          console.log(
            `Website ${domain} found in registry. Redirecting download to ${registry[domain]}`
          );
          newFilename = registry[domain] + downloadItem.filename;
        } else {
          console.log(
            `Website ${domain} not found in registry. Using default download path.`
          );
          newFilename = "Downloads/" + downloadItem.filename;
        }
        console.log(newFilename);
        console.log(typeof newFilename);
        console.log(downloadItem.finalUrl);

        suggestFilename(newFilename, suggest);
      } catch (error) {
        console.error(error);
        suggestFilename(defaultPath + downloadItem.filename, suggest);
        return true;
      }
    });
    return true;
  } catch (error) {
    console.error(error);
    return false;
  }
});