#!/usr/bin/env node
const fs = require("fs");
const https = require("https");
const { homedir } = require("os");
const { join } = require("path");

function httpsRequest(url, options = {}) {
  return new Promise((resolve, reject) => {
    const req = https.request(url, options, (res) => {
      let data = "";
      res.on("data", (chunk) => (data += chunk));
      res.on("end", () => {
        if (res.statusCode >= 400) {
          reject(new Error(`HTTP ${res.statusCode}: ${data}`));
        } else {
          resolve(JSON.parse(data));
        }
      });
    });
    req.on("error", reject);
    if (options.body) req.write(options.body);
    req.end();
  });
}

async function getGoogleAccessToken(creds) {
  const body = new URLSearchParams({
    client_id: creds.client_id,
    client_secret: creds.client_secret,
    refresh_token: creds.refresh_token,
    grant_type: "refresh_token",
  }).toString();

  const data = await httpsRequest("https://oauth2.googleapis.com/token", {
    method: "POST",
    headers: {
      "Content-Type": "application/x-www-form-urlencoded",
      "Content-Length": Buffer.byteLength(body),
    },
    body,
  });

  return data.access_token;
}

async function getMicrosoftAccessToken(creds) {
  const body = new URLSearchParams({
    client_id: creds.client_id,
    refresh_token: creds.refresh_token,
    grant_type: "refresh_token",
    scope: "https://graph.microsoft.com/Mail.Read offline_access",
  }).toString();

  const tenant = creds.tenant || "consumers";
  const data = await httpsRequest(`https://login.microsoftonline.com/${tenant}/oauth2/v2.0/token`, {
    method: "POST",
    headers: {
      "Content-Type": "application/x-www-form-urlencoded",
      "Content-Length": Buffer.byteLength(body),
    },
    body,
  });

  return data.access_token;
}

async function searchGmail(accessToken, query, maxResults = 20) {
  const encodedQuery = encodeURIComponent(query);
  const url = `https://gmail.googleapis.com/gmail/v1/users/me/messages?maxResults=${maxResults}&q=${encodedQuery}`;
  return await httpsRequest(url, {
    headers: { Authorization: `Bearer ${accessToken}` },
  });
}

async function getGmailMessage(accessToken, id) {
  const url = `https://gmail.googleapis.com/gmail/v1/users/me/messages/${id}`;
  return await httpsRequest(url, {
    headers: { Authorization: `Bearer ${accessToken}` },
  });
}

async function searchOutlook(accessToken, query, maxResults = 20) {
  const url = `https://graph.microsoft.com/v1.0/me/messages?$top=${maxResults}&$search="${query}"`;
  return await httpsRequest(url, {
    headers: { Authorization: `Bearer ${accessToken}` },
  });
}

function getHeader(headers, name) {
  const h = headers.find((h) => h.name.toLowerCase() === name.toLowerCase());
  return h ? h.value : "";
}

async function main() {
  const searchQuery = process.argv[2] || "BIOS graphics GPU grafikkort";

  console.log(`🔍 Searching for: "${searchQuery}"\n`);

  // Gmail
  console.log("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
  console.log("📧 Gmail");
  console.log("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n");

  const gmailCreds = JSON.parse(
    fs.readFileSync(join(homedir(), ".openclaw/secrets/google-oauth.json"), "utf8"),
  );
  const gmailToken = await getGoogleAccessToken(gmailCreds);
  const gmailResults = await searchGmail(gmailToken, searchQuery);

  if (gmailResults.messages && gmailResults.messages.length > 0) {
    for (const msg of gmailResults.messages.slice(0, 5)) {
      const full = await getGmailMessage(gmailToken, msg.id);
      const from = getHeader(full.payload.headers, "From");
      const subject = getHeader(full.payload.headers, "Subject");
      const date = getHeader(full.payload.headers, "Date");
      const labels = full.labelIds || [];
      const isUnread = labels.includes("UNREAD");

      console.log(`${isUnread ? "🔴" : "✅"} From: ${from}`);
      console.log(`   Subject: ${subject}`);
      console.log(`   Date: ${date}`);
      console.log(`   Preview: ${full.snippet}`);
      console.log("---");
    }
  } else {
    console.log("No matches found.\n");
  }

  // Outlook
  console.log("\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
  console.log("📧 Outlook");
  console.log("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n");

  const outlookCreds = JSON.parse(
    fs.readFileSync(join(homedir(), ".openclaw/secrets/outlook-oauth.json"), "utf8"),
  );
  const outlookToken = await getMicrosoftAccessToken(outlookCreds);
  const outlookResults = await searchOutlook(outlookToken, searchQuery);

  if (outlookResults.value && outlookResults.value.length > 0) {
    for (const msg of outlookResults.value.slice(0, 5)) {
      console.log(
        `${msg.isRead ? "✅" : "🔴"} From: ${msg.from?.emailAddress?.name || msg.from?.emailAddress?.address}`,
      );
      console.log(`   Subject: ${msg.subject}`);
      console.log(`   Date: ${msg.receivedDateTime}`);
      console.log(`   Preview: ${msg.bodyPreview}`);
      console.log("---");
    }
  } else {
    console.log("No matches found.\n");
  }

  // Office365
  console.log("\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
  console.log("📧 Office365");
  console.log("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n");

  const o365Creds = JSON.parse(
    fs.readFileSync(join(homedir(), ".openclaw/secrets/outlook-o365-oauth.json"), "utf8"),
  );
  const o365Token = await getMicrosoftAccessToken(o365Creds);
  const o365Results = await searchOutlook(o365Token, searchQuery);

  if (o365Results.value && o365Results.value.length > 0) {
    for (const msg of o365Results.value.slice(0, 5)) {
      console.log(
        `${msg.isRead ? "✅" : "🔴"} From: ${msg.from?.emailAddress?.name || msg.from?.emailAddress?.address}`,
      );
      console.log(`   Subject: ${msg.subject}`);
      console.log(`   Date: ${msg.receivedDateTime}`);
      console.log(`   Preview: ${msg.bodyPreview}`);
      console.log("---");
    }
  } else {
    console.log("No matches found.\n");
  }
}

main().catch((err) => {
  console.error("Error:", err.message);
  process.exit(1);
});