// Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
// SPDX-License-Identifier: MIT

import { GithubFilled, GithubOutlined } from "@ant-design/icons";
import {
  Bird,
  Book,
  Camera,
  ChevronRight,
  Code,
  Globe,
  Home,
  Lightbulb,
  Microscope,
  Paintbrush,
  Podcast,
  ShoppingCart,
  Usb,
  User,
} from "lucide-react";
import Link from "next/link";

import { AuroraText } from "~/components/magicui/aurora-text";
import { BentoCard } from "~/components/magicui/bento-grid";
import { BentoGrid } from "~/components/magicui/bento-grid";
import { FlickeringGrid } from "~/components/magicui/flickering-grid";
import { Button } from "~/components/ui/button";

import { Ray } from "./_components/ray";

export default function HomePage() {
  return (
    <div className="flex flex-col items-center">
      <Header />
      <main className="container flex flex-col items-center justify-center gap-56">
        <Jumbotron />
        <CaseStudySection />
        <MultiAgentSection />
        <CoreFeatureSection />
        <JoinCommunitySection />
      </main>
      <Footer />
      <Ray />
    </div>
  );
}

function Header() {
  return (
    <header className="supports-backdrop-blur:bg-background/80 bg-background/40 sticky top-0 left-0 z-40 flex h-15 w-full flex-col items-center backdrop-blur-lg">
      <div className="container flex h-15 items-center justify-between px-3">
        <div className="text-xl font-medium">
          <span className="mr-1 text-2xl">🦌</span>
          <span>DeerFlow</span>
        </div>
        <div className="flex items-center gap-2">
          <Button variant="outline" size="sm" asChild>
            <Link href="https://github.com/bytedance/deer-flow" target="_blank">
              <GithubOutlined />
              Star on GitHub
            </Link>
          </Button>
        </div>
      </div>
      <hr className="from-border/0 via-border/70 to-border/0 m-0 h-px w-full border-none bg-gradient-to-r" />
    </header>
  );
}

function Footer() {
  return (
    <footer className="container mt-32 flex flex-col items-center justify-center">
      <hr className="from-border/0 via-border/70 to-border/0 m-0 h-px w-full border-none bg-gradient-to-r" />
      <div className="text-muted-foreground container flex h-20 flex-col items-center justify-center text-sm">
        <p className="font-serif text-xl">
          &quot;Originated from Open Source, give back to Open Source.&quot;
        </p>
      </div>
      <div className="text-muted-foreground container mb-8 flex flex-col items-center justify-center text-xs">
        <p>Licensed under MIT License</p>
        <p>&copy; 2025 DeepFlow</p>
      </div>
    </footer>
  );
}

function SectionHeader({
  title,
  description,
}: {
  title: React.ReactNode;
  description: React.ReactNode;
}) {
  return (
    <div className="mb-12 flex flex-col items-center justify-center gap-2">
      <h2 className="mb-4 bg-gradient-to-r from-white via-gray-200 to-gray-400 bg-clip-text text-center text-5xl font-bold text-transparent">
        {title}
      </h2>
      <p className="text-muted-foreground text-center text-xl">{description}</p>
    </div>
  );
}

function Jumbotron() {
  return (
    <section className="relative flex h-[95vh] flex-col items-center justify-center pb-15">
      <FlickeringGrid
        id="deer-hero-bg"
        className={`absolute inset-0 z-0 [mask-image:radial-gradient(800px_circle_at_center,white,transparent)]`}
        squareSize={4}
        gridGap={4}
        color="#60A5FA"
        maxOpacity={0.133}
        flickerChance={0.1}
      />
      <FlickeringGrid
        id="deer-hero"
        className={`absolute inset-0 z-0 mask-[url(/images/deer-hero.svg)] mask-size-[75%] mask-center mask-no-repeat`}
        squareSize={3}
        gridGap={6}
        color="#60A5FA"
        maxOpacity={0.66}
        flickerChance={0.12}
      />
      <div className="relative z-10 flex flex-col items-center justify-center gap-12">
        <h1 className="text-center text-6xl font-bold">
          <span className="bg-gradient-to-r from-white via-gray-200 to-gray-400 bg-clip-text text-transparent">
            Deep Research{" "}
          </span>
          <AuroraText>at Your Fingertips</AuroraText>
        </h1>
        <p className="hidden max-w-4xl text-center text-2xl font-light opacity-75 md:block">
          Discover the revolutionary Multi-Agent Research Assistant that
          empowers you to dive deeper and wider into any subject. Equipped with
          the powerful tools like search engines, crawlers, Python, and MCP
          services, DeerFlow provides instant insights, in-depth reports and
          even captivating podcasts.
        </p>
        <div className="flex gap-6">
          <Button className="w-42 text-lg" size="lg" asChild>
            <Link href="/chat">
              Get Started <ChevronRight />
            </Link>
          </Button>
          <Button className="w-42 text-lg" size="lg" variant="outline" asChild>
            <Link href="https://github.com/bytedance/deer-flow" target="_blank">
              <GithubFilled />
              Learn More
            </Link>
          </Button>
        </div>
      </div>
      <div className="absolute bottom-8 flex text-xs opacity-50">
        <p>* DEER stands for Deep Exploration and Efficient Research.</p>
      </div>
    </section>
  );
}

const caseStudies = [
  {
    icon: Home,
    title: "Design a futuristic smart home for a family of 4",
    description:
      "DeepFlow generates innovative concepts and detailed blueprints for a cutting-edge smart home, incorporating AI-driven automation and sustainable energy solutions.",
  },
  {
    icon: Book,
    title: "Write a historical fiction novel set in ancient Rome",
    description:
      "DeepFlow assists in crafting compelling characters, intricate plots, and historically accurate settings to bring your ancient Roman story to life.",
  },
  {
    icon: ShoppingCart,
    title: "Create a marketing campaign for a new eco-friendly product",
    description:
      "DeepFlow develops a strategic marketing plan, including social media content, ad designs, and audience targeting strategies to promote your sustainable product effectively.",
  },
  {
    icon: Lightbulb,
    title: "Invent a groundbreaking renewable energy solution",
    description:
      "DeepFlow helps brainstorm innovative ideas and provides technical schematics for a renewable energy solution that addresses global energy challenges.",
  },
  {
    icon: Camera,
    title: "Direct a short film about climate change",
    description:
      "DeepFlow assists in developing a compelling script, visual storyboards, and production plans to create an impactful short film on environmental issues.",
  },
  {
    icon: Globe,
    title: "Plan a sustainable travel itinerary for eco-conscious tourists",
    description:
      "DeepFlow designs a detailed travel plan featuring eco-friendly accommodations, activities, and transportation options for environmentally aware travelers.",
  },
  {
    icon: Code,
    title: "Develop an AI-powered app for mental health support",
    description:
      "DeepFlow provides guidance on app design, user experience, and AI integration to create a tool that offers personalized mental health resources and support.",
  },
  {
    icon: Paintbrush,
    title: "Create an immersive art installation on human connection",
    description:
      "DeepFlow assists in conceptualizing and designing an interactive art installation that explores themes of empathy, relationships, and the power of human connection.",
  },
];

function CaseStudySection() {
  return (
    <section className="relative container flex flex-col items-center justify-center">
      <SectionHeader
        title="Case Studies"
        description="See DeerFlow in action through replays."
      />
      <div className="flex w-full flex-wrap">
        {caseStudies.map((caseStudy) => (
          <div
            key={caseStudy.title}
            className="w-full p-2 sm:w-1/2 md:w-1/3 lg:w-[25%]"
          >
            <BentoCard
              {...{
                Icon: caseStudy.icon,
                name: caseStudy.title,
                description: caseStudy.description,
                href: "/",
                cta: "Learn more",
                className: "w-full h-[320px]",
                background: (
                  <img
                    alt="background"
                    className="absolute -top-20 -right-20 opacity-60"
                  />
                ),
              }}
            />
          </div>
        ))}
      </div>
    </section>
  );
}

function MultiAgentSection() {
  return (
    <section className="relative container flex flex-col items-center justify-center">
      <SectionHeader
        title="Multi-Agent Architecture"
        description="Experience the agent teamwork with our Supervisor + Handoffs design pattern."
      />
    </section>
  );
}

const features = [
  {
    Icon: Microscope,
    name: "Dive Deeper and Reach Wider",
    description:
      "Unlock deeper insights with advanced tools. Our powerful search + crawling and Python tools gathers comprehensive data, delivering in-depth reports to enhance your study.",
    href: "/",
    cta: "Learn more",
    background: (
      <img alt="background" className="absolute -top-20 -right-20 opacity-60" />
    ),
    className: "lg:col-start-1 lg:col-end-2 lg:row-start-1 lg:row-end-3",
  },
  {
    Icon: User,
    name: "Human-in-the-loop",
    description:
      "Refine your research plan, or adjust focus areas all through simple natural language.",
    href: "/",
    cta: "Learn more",
    background: (
      <img alt="background" className="absolute -top-20 -right-20 opacity-60" />
    ),
    className: "lg:col-start-1 lg:col-end-2 lg:row-start-3 lg:row-end-4",
  },
  {
    Icon: Bird,
    name: "Lang Stack",
    description:
      "Build with confidence using the LangChain and LangGraph frameworks.",
    href: "/",
    cta: "Learn more",
    background: (
      <img alt="background" className="absolute -top-20 -right-20 opacity-60" />
    ),
    className: "lg:col-start-2 lg:col-end-3 lg:row-start-1 lg:row-end-2",
  },
  {
    Icon: Usb,
    name: "MCP Integrations",
    description:
      "Supercharge your research workflow and expand your toolkit with seamless MCP integrations.",
    href: "/",
    cta: "Learn more",
    background: (
      <img alt="background" className="absolute -top-20 -right-20 opacity-60" />
    ),
    className: "lg:col-start-2 lg:col-end-3 lg:row-start-2 lg:row-end-3",
  },
  {
    Icon: Podcast,
    name: "Podcast Generation",
    description:
      "Instantly generate podcasts from reports. Perfect for on-the-go learning or sharing findings effortlessly.  ",
    href: "/",
    cta: "Learn more",
    background: (
      <img alt="background" className="absolute -top-20 -right-20 opacity-60" />
    ),
    className: "lg:col-start-2 lg:col-end-3 lg:row-start-3 lg:row-end-4",
  },
];

function CoreFeatureSection() {
  return (
    <section className="relative flex w-full flex-col content-around items-center justify-center">
      <SectionHeader
        title="Core Features"
        description="Find out what makes DeerFlow effective."
      />
      <BentoGrid className="w-3/4 lg:grid-cols-2 lg:grid-rows-3">
        {features.map((feature) => (
          <BentoCard key={feature.name} {...feature} />
        ))}
      </BentoGrid>
    </section>
  );
}

function JoinCommunitySection() {
  return (
    <section className="flex w-full flex-col items-center justify-center pb-12">
      <SectionHeader
        title={
          <AuroraText colors={["#60A5FA", "#A5FA60", "#A560FA"]}>
            Join the DeerFlow Community
          </AuroraText>
        }
        description="Contribute brilliant ideas to shape the future of DeerFlow. Collaborate, innovate, and make impacts."
      />
      <Button className="text-xl" size="lg" asChild>
        <Link href="https://github.com/bytedance/deer-flow" target="_blank">
          <GithubFilled />
          Contribute Now
        </Link>
      </Button>
    </section>
  );
}