import { PrismaClient } from "@prisma/client";
import bcrypt from "bcryptjs";

const prisma = new PrismaClient();

function normalizeEmail(value) {
  const email = String(value ?? "").trim().toLowerCase();

  if (!email) {
    return "admin@example.local";
  }

  return email;
}

function normalizePassword(value) {
  const password = String(value ?? "").trim();

  if (!password) {
    return "BitteEinLangesSicheresPasswortSetzen";
  }

  return password;
}

async function ensureUserSettings(userId, email) {
  const existingSettings = await prisma.settings.findUnique({
    where: {
      userId
    }
  });

  if (existingSettings) {
    return existingSettings;
  }

  return prisma.settings.create({
    data: {
      userId,
      darkMode: false,
      calendarIcsUrl: null,
      calendarMaxEvents: 8,
      calendarLookaheadDays: 60,
      dashboardTitle: "Personal Dashboard",
      dashboardSubtitle: email,
      logoUrl: "/logo.svg",
      backgroundImageUrl: "/background-fancy.svg",
      backgroundImageOpacity: 32,
      primaryColor: "#2563eb",
      secondaryColor: "#dbeafe"
    }
  });
}

async function main() {
  const initialAdminEmail = normalizeEmail(process.env.INITIAL_ADMIN_EMAIL);
  const initialAdminPassword = normalizePassword(process.env.INITIAL_ADMIN_PASSWORD);

  const existingAdmin = await prisma.user.findUnique({
    where: {
      email: initialAdminEmail
    },
    select: {
      id: true,
      email: true,
      role: true
    }
  });

  if (existingAdmin) {
    await ensureUserSettings(existingAdmin.id, existingAdmin.email);
    console.log("Initialer Admin existiert bereits. Seed übersprungen.");
    return;
  }

  const passwordHash = await bcrypt.hash(initialAdminPassword, 12);

  const admin = await prisma.user.create({
    data: {
      email: initialAdminEmail,
      passwordHash,
      displayName: "Admin",
      profileImageUrl: null,
      role: "ADMIN"
    },
    select: {
      id: true,
      email: true
    }
  });

  await ensureUserSettings(admin.id, admin.email);

  console.log("Initialer Admin wurde erstellt.");
  console.log(`E-Mail: ${admin.email}`);
  console.log("Dashboard startet leer. Es wurden keine Widgets und keine Favoriten angelegt.");
}

main()
  .catch((error) => {
    console.error(error);
    process.exit(1);
  })
  .finally(async () => {
    await prisma.$disconnect();
  });