import type { Metadata } from 'next'
import Link from 'next/link'
import Image from 'next/image'
import { auth } from '@/lib/auth'
import { redirect } from 'next/navigation'
import type { Route } from 'next'
import type { UserRole } from '@prisma/client'

export const metadata: Metadata = { title: 'Monaco Ocean Protection Challenge' }

export default async function HomePage() {
  const session = await auth()

  // Redirect authenticated users to their appropriate dashboard.
  // Reads the multi-role array (roles[]) so a user who is e.g. JURY_MEMBER+MENTOR
  // lands on /jury (their highest-priority role) rather than always falling
  // through on the singular `role` field. The context-aware variant —
  // user.getDefaultDashboard tRPC procedure — exists for surfaces that can call
  // tRPC; page.tsx uses static priority for simplicity.
  if (session?.user) {
    const roles = (session.user.roles as UserRole[] | undefined) ?? [session.user.role as UserRole]
    if (roles.includes('SUPER_ADMIN') || roles.includes('PROGRAM_ADMIN')) redirect('/admin')
    if (roles.includes('JURY_MEMBER')) redirect('/jury')
    if (roles.includes('MENTOR')) redirect('/mentor' as Route)
    if (roles.includes('APPLICANT')) redirect('/applicant' as Route)
    if (roles.includes('OBSERVER')) redirect('/observer')
  }

  return (
    <div className="flex min-h-screen flex-col">
      {/* Header */}
      <header className="border-b border-border bg-white">
        <div className="container-app flex h-16 items-center justify-between">
          <Image
            src="/images/MOPC-blue-long.png"
            alt="MOPC - Monaco Ocean Protection Challenge"
            width={140}
            height={45}
            className="h-10 w-auto"
            priority
          />
          <Link
            href="/login"
            className="inline-flex h-10 items-center justify-center rounded-md bg-primary px-6 text-sm font-medium text-primary-foreground transition-colors hover:bg-primary/90"
          >
            Sign In
          </Link>
        </div>
      </header>

      {/* Hero Section */}
      <main className="flex flex-1 flex-col">
        <section className="flex flex-1 flex-col items-center justify-center px-4 py-16 text-center">
          <h1 className="text-display-lg text-brand-blue">
            Monaco Ocean Protection Challenge
          </h1>
          <p className="mt-4 max-w-2xl text-lg text-muted-foreground">
            Supporting innovative solutions for ocean conservation through fair
            and transparent project evaluation.
          </p>
          <div className="mt-8 flex gap-4">
            <Link
              href="/login"
              className="inline-flex h-12 items-center justify-center rounded-md bg-primary px-8 text-base font-medium text-primary-foreground transition-colors hover:bg-primary/90"
            >
              Jury Portal
            </Link>
            <a
              href="https://monaco-opc.com"
              target="_blank"
              rel="noopener noreferrer"
              className="inline-flex h-12 items-center justify-center rounded-md border border-border bg-background px-8 text-base font-medium transition-colors hover:bg-muted"
            >
              Learn More
            </a>
          </div>
        </section>

        {/* Features Section */}
        <section className="border-t border-border bg-muted/30 px-4 py-16">
          <div className="container-app">
            <h2 className="text-center text-heading text-brand-blue">
              Platform Features
            </h2>
            <div className="mt-12 grid gap-8 md:grid-cols-3">
              <div className="rounded-lg border border-border bg-white p-6">
                <div className="mb-4 flex h-12 w-12 items-center justify-center rounded-lg bg-primary/10">
                  <svg
                    className="h-6 w-6 text-primary"
                    fill="none"
                    stroke="currentColor"
                    viewBox="0 0 24 24"
                  >
                    <path
                      strokeLinecap="round"
                      strokeLinejoin="round"
                      strokeWidth={2}
                      d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"
                    />
                  </svg>
                </div>
                <h3 className="text-subheading text-brand-blue">
                  Secure Evaluation
                </h3>
                <p className="mt-2 text-small text-muted-foreground">
                  Jury members access only their assigned projects with complete
                  confidentiality.
                </p>
              </div>

              <div className="rounded-lg border border-border bg-white p-6">
                <div className="mb-4 flex h-12 w-12 items-center justify-center rounded-lg bg-accent/10">
                  <svg
                    className="h-6 w-6 text-accent"
                    fill="none"
                    stroke="currentColor"
                    viewBox="0 0 24 24"
                  >
                    <path
                      strokeLinecap="round"
                      strokeLinejoin="round"
                      strokeWidth={2}
                      d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z"
                    />
                  </svg>
                </div>
                <h3 className="text-subheading text-brand-blue">
                  Real-time Progress
                </h3>
                <p className="mt-2 text-small text-muted-foreground">
                  Track evaluation progress and manage voting windows with
                  comprehensive dashboards.
                </p>
              </div>

              <div className="rounded-lg border border-border bg-white p-6">
                <div className="mb-4 flex h-12 w-12 items-center justify-center rounded-lg bg-brand-teal/10">
                  <svg
                    className="h-6 w-6 text-brand-teal"
                    fill="none"
                    stroke="currentColor"
                    viewBox="0 0 24 24"
                  >
                    <path
                      strokeLinecap="round"
                      strokeLinejoin="round"
                      strokeWidth={2}
                      d="M12 18h.01M8 21h8a2 2 0 002-2V5a2 2 0 00-2-2H8a2 2 0 00-2 2v14a2 2 0 002 2z"
                    />
                  </svg>
                </div>
                <h3 className="text-subheading text-brand-blue">
                  Mobile First
                </h3>
                <p className="mt-2 text-small text-muted-foreground">
                  Evaluate projects anywhere with a fully responsive design
                  optimized for all devices.
                </p>
              </div>
            </div>
          </div>
        </section>
      </main>

      {/* Footer */}
      <footer className="border-t border-border bg-brand-blue py-8 text-white">
        <div className="container-app text-center">
          <p className="text-small">
            © {new Date().getFullYear()} Monaco Ocean Protection Challenge. All
            rights reserved.
          </p>
        </div>
      </footer>
    </div>
  )
}