import { A, useNavigate } from "@solidjs/router"
import { createSignal, Show } from "solid-js"
import CheckIcon from "@/components/CheckIcon"
import ExternalLinkIcon from "@/components/ExternalLinkIcon"
import PricingTable from "@/components/PricingTable"
import RelayForm, { type RelayFormValues } from "@/components/RelayForm"
import Modal from "@/components/Modal"
import PaymentDialog from "@/components/PaymentDialog"
import PaymentSetup from "@/components/PaymentSetup"
import Login from "@/views/Login"
import { createRelayForActiveTenant, resolvePostPaidFlow } from "@/lib/hooks"
import type { Invoice } from "@/lib/api"
import { account, refetchBilling, setToastMessage } from "@/lib/state"
import FlotillaLogo from "@/assets/flotilla-logo.svg"
import NostordLogo from "@/assets/nostord-logo.svg"

export default function Home() {
  const navigate = useNavigate()
  const [showRelayModal, setShowRelayModal] = createSignal(false)
  const [showLoginModal, setShowLoginModal] = createSignal(false)
  const [draftRelay, setDraftRelay] = createSignal<RelayFormValues>()
  const [initialPlanId, setInitialPlanId] = createSignal<RelayFormValues["plan_id"]>("free")
  const [pendingInvoice, setPendingInvoice] = createSignal<Invoice | undefined>()
  const [paymentSetupOpen, setPaymentSetupOpen] = createSignal(false)
  let createdRelayId = ""

  function openRelayModal(planId: RelayFormValues["plan_id"] = "free") {
    setInitialPlanId(planId)
    setShowRelayModal(true)
  }

  async function onRelayFormSubmit(values: RelayFormValues) {
    // Not signed in yet: stash the draft and send them through login. The relay
    // (and any payment prompt) is created in onAuthenticated once the session and
    // its tenant exist, so signing up and creating a paid relay in one go still
    // surfaces the invoice.
    if (!account()) {
      setDraftRelay(values)
      setShowRelayModal(false)
      setShowLoginModal(true)
      return
    }

    const relay = await createRelayForActiveTenant(values)
    createdRelayId = relay.id
    setShowRelayModal(false)

    // Paid plans materialize an open invoice on create. A just-signed-up tenant
    // has no payment method yet, so open the payment dialog here instead of
    // dropping them on the relay page with no prompt (the shared dashboard banner
    // only catches up once they navigate and its billing reads refetch).
    if (values.plan_id !== "free") {
      void refetchBilling()
      const decision = await resolvePostPaidFlow()
      if (decision.kind === "pay_invoice") {
        setPendingInvoice(decision.invoice)
        return
      }
      if (decision.kind === "setup") {
        setPaymentSetupOpen(true)
        return
      }
    }

    navigate(`/relays/${relay.id}`)
  }

  async function onAuthenticated() {
    setShowLoginModal(false)
    const relay = draftRelay()
    setDraftRelay(undefined)

    if (!relay) {
      navigate("/relays")
      return
    }

    try {
      await onRelayFormSubmit(relay)
    } catch (e) {
      setToastMessage(e instanceof Error ? e.message : "Failed to create relay")
    }
  }

  function handleInvoiceClose() {
    setPendingInvoice(undefined)
    setPaymentSetupOpen(true)
  }

  function handleSetupClose() {
    setPaymentSetupOpen(false)
    void refetchBilling()
    navigate(`/relays/${createdRelayId}`)
  }

  return (
    <div class="min-h-screen bg-white text-gray-900 overflow-x-hidden">

      {/* ── Nav ── */}
      <nav class="sticky top-0 z-20 bg-white/80 backdrop-blur border-b border-gray-100">
        <div class="max-w-5xl mx-auto px-6 h-14 flex items-center justify-between">
          <div class="flex items-center gap-2 font-bold text-gray-900">
            <img src="/caravel.png" alt="Caravel" class="w-7 h-7 rounded" />
            Caravel
          </div>
          <Show
            when={account()}
            fallback={
              <button
                type="button"
                onClick={() => setShowLoginModal(true)}
                class="text-sm font-medium py-1.5 px-4 border border-gray-200 rounded-lg text-gray-600 hover:bg-gray-50 transition-colors"
              >
                Sign in
              </button>
            }
          >
            <A
              href="/relays"
              class="text-sm font-medium py-1.5 px-4 bg-blue-600 text-white rounded-lg hover:bg-blue-700 transition-colors"
            >
              Go to dashboard
            </A>
          </Show>
        </div>
      </nav>

      {/* ── Hero ── */}
      <section class="relative overflow-hidden">
        {/* Background decorations */}
        <div class="absolute inset-0 bg-[radial-gradient(ellipse_80%_50%_at_50%_-10%,rgba(59,130,246,0.12),transparent)]" />
        <div class="absolute top-20 left-1/2 -translate-x-1/2 w-[600px] h-[600px] bg-blue-50 rounded-full blur-3xl opacity-60 pointer-events-none" />

        <div class="relative max-w-5xl mx-auto px-6 pt-24 pb-28 text-center">
          <div class="inline-flex items-center gap-2 rounded-full border border-blue-200 bg-blue-50 px-4 py-1.5 text-xs font-semibold text-blue-700 mb-8">
            <span class="w-1.5 h-1.5 bg-blue-500 rounded-full animate-pulse" />
            Nostr-native relay hosting
          </div>

          <h1 class="text-5xl sm:text-6xl font-extrabold tracking-tight text-gray-900 mb-6 leading-tight">
            Your community,<br />
            <span class="text-blue-600">your server.</span>
          </h1>

          <p class="text-xl text-gray-500 mb-10 max-w-2xl mx-auto leading-relaxed">
            Spin up a private, managed Nostr relay for your community in minutes,
            with full control over membership, access, and policies.
          </p>

          <div class="flex flex-col sm:flex-row items-center justify-center gap-4">
            <button
              type="button"
            onClick={() => openRelayModal()}
            class="inline-flex items-center gap-2 py-3 px-8 bg-blue-600 text-white font-semibold rounded-xl hover:bg-blue-700 active:scale-95 transition-all shadow-lg shadow-blue-200"
          >
            Get started free
              <svg class="w-4 h-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12h14M12 5l7 7-7 7" /></svg>
            </button>
            <A
              href={account() ? "/relays" : "#"}
              onClick={(e) => {
                if (!account()) {
                  e.preventDefault()
                  setShowLoginModal(true)
                }
              }}
              class="inline-flex items-center gap-2 py-3 px-8 border border-gray-200 text-gray-700 font-semibold rounded-xl hover:bg-gray-50 transition-all"
            >
              {account() ? "Go to dashboard" : "Sign in"}
            </A>
          </div>
        </div>
      </section>

      {/* ── Features ── */}
      <section class="bg-gray-50 border-y border-gray-100">
        <div class="max-w-5xl mx-auto px-6 py-20">
          <h2 class="text-3xl font-bold text-center text-gray-900 mb-4">Everything you need</h2>
          <p class="text-center text-gray-500 mb-14 max-w-xl mx-auto">
            Caravel takes care of the infrastructure so you can focus on building your community.
          </p>
          <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-6">
            {[
              {
                icon: (
                  <svg class="w-6 h-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.75" stroke-linecap="round" stroke-linejoin="round">
                    <rect x="2" y="3" width="20" height="14" rx="2" />
                    <path d="M8 21h8M12 17v4" />
                  </svg>
                ),
                title: "Managed hosting",
                body: "We handle uptime, backups, and updates. Your relay stays online so your community never misses a beat.",
              },
              {
                icon: (
                  <svg class="w-6 h-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.75" stroke-linecap="round" stroke-linejoin="round">
                    <circle cx="12" cy="8" r="4" />
                    <path d="M6 20v-2a6 6 0 0112 0v2" />
                  </svg>
                ),
                title: "Membership control",
                body: "Approve members with Nostr pubkeys. Keep your space invite-only or open — you decide.",
              },
              {
                icon: (
                  <svg class="w-6 h-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.75" stroke-linecap="round" stroke-linejoin="round">
                    <path d="M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z" />
                  </svg>
                ),
                title: "Access policies",
                body: "Fine-grained write and read permissions. Moderate content without touching any server config.",
              },
              {
                icon: (
                  <svg class="w-6 h-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.75" stroke-linecap="round" stroke-linejoin="round">
                    <ellipse cx="12" cy="5" rx="9" ry="3" />
                    <path d="M21 12c0 1.66-4.03 3-9 3S3 13.66 3 12" />
                    <path d="M3 5v14c0 1.66 4.03 3 9 3s9-1.34 9-3V5" />
                  </svg>
                ),
                title: "Blossom storage",
                body: "Attach media files to your relay with integrated Blossom server support on paid plans.",
              },
              {
                icon: (
                  <svg class="w-6 h-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.75" stroke-linecap="round" stroke-linejoin="round">
                    <polygon points="23 7 16 12 23 17 23 7" />
                    <rect x="1" y="5" width="15" height="14" rx="2" />
                  </svg>
                ),
                title: "LiveKit video",
                body: "Built-in video room support via LiveKit. Host voice and video calls directly within your community.",
              },
              {
                icon: (
                  <svg class="w-6 h-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.75" stroke-linecap="round" stroke-linejoin="round">
                    <path d="M13 2L3 14h9l-1 8 10-12h-9l1-8z" />
                  </svg>
                ),
                title: "Flexible payments",
                body: "Pay with Bitcoin/Lightning or with a card.",
              },
            ].map(({ icon, title, body }) => (
              <div class="bg-white rounded-2xl border border-gray-200 p-6 hover:border-blue-200 hover:shadow-sm transition-all">
                <div class="w-10 h-10 rounded-xl bg-blue-50 text-blue-600 flex items-center justify-center mb-4">
                  {icon}
                </div>
                <h3 class="font-semibold text-gray-900 mb-1">{title}</h3>
                <p class="text-sm text-gray-500 leading-relaxed">{body}</p>
              </div>
            ))}
          </div>
        </div>
      </section>

      {/* ── Connect ── */}
      <section class="max-w-5xl mx-auto px-6 py-20">
        <div class="text-center mb-14">
          <h2 class="text-3xl font-bold text-gray-900 mb-4">Connect with your community</h2>
          <p class="text-gray-500 max-w-xl mx-auto">
            Once your relay is live, these Nostr-native platforms let your members connect,
            chat, and collaborate — all powered by your relay.
          </p>
        </div>

        <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
          {/* Flotilla */}
          <a
            href="https://flotilla.social"
            target="_blank"
            rel="noopener noreferrer"
            class="group flex flex-col gap-5 rounded-2xl border border-gray-200 bg-white p-8 hover:border-blue-300 hover:shadow-md transition-all"
          >
            <div class="flex items-start justify-between gap-4">
              <div class="flex items-center gap-3">
                <img src={FlotillaLogo} alt="Flotilla" class="w-12 h-12 rounded-2xl shadow-md shadow-blue-200" />
                <div>
                  <h3 class="text-lg font-bold text-gray-900 group-hover:text-blue-600 transition-colors">Flotilla</h3>
                  <p class="text-xs text-gray-400">flotilla.social</p>
                </div>
              </div>
              <span class="text-gray-300 group-hover:text-blue-400 transition-colors mt-1">
                <ExternalLinkIcon />
              </span>
            </div>
            <p class="text-sm text-gray-600 leading-relaxed">
              A community platform built on Nostr. Flotilla gives your members channels,
              threads, and a rich social experience — all connected to your relay.
            </p>
            <div class="space-y-2">
              {["Nostr-native channels & threads", "Works directly with your relay", "Open source & self-sovereign"].map(f => (
                <div class="flex items-start gap-2 text-sm text-gray-600">
                  <CheckIcon />
                  {f}
                </div>
              ))}
            </div>
            <div class="mt-auto pt-2">
              <span class="inline-flex items-center gap-1.5 text-sm font-semibold text-blue-600">
                Visit flotilla.social <ExternalLinkIcon />
              </span>
            </div>
          </a>

          {/* Nostrord */}
          <a
            href="https://nostrord.com/"
            target="_blank"
            rel="noopener noreferrer"
            class="group flex flex-col gap-5 rounded-2xl border border-gray-200 bg-white p-8 hover:border-amber-300 hover:shadow-md transition-all"
          >
            <div class="flex items-start justify-between gap-4">
              <div class="flex items-center gap-3">
                <img src={NostordLogo} alt="Nostrord" class="w-12 h-12 rounded-2xl shadow-md shadow-amber-200" />
                <div>
                  <h3 class="text-lg font-bold text-gray-900 group-hover:text-amber-600 transition-colors">Nostrord</h3>
                  <p class="text-xs text-gray-400">nostrord.com</p>
                </div>
              </div>
              <span class="text-gray-300 group-hover:text-amber-400 transition-colors mt-1">
                <ExternalLinkIcon />
              </span>
            </div>
            <p class="text-sm text-gray-600 leading-relaxed">
              A NIP-29 client built for decentralized group chat on Nostr. Create
              censorship-resistant communities with admin roles, moderation, and access
              control—all powered by your relay.
            </p>
            <div class="space-y-2">
              {["Decentralized group chat with NIP-29", "Censorship-resistant communities", "Admin roles & moderation"].map(f => (
                <div class="flex items-start gap-2 text-sm text-gray-600">
                  <CheckIcon />
                  {f}
                </div>
              ))}
            </div>
            <div class="mt-auto pt-2">
              <span class="inline-flex items-center gap-1.5 text-sm font-semibold text-amber-600">
                Visit nostrord.com <ExternalLinkIcon />
              </span>
            </div>
          </a>
        </div>
      </section>

      {/* ── Pricing ── */}
      <section class="bg-gray-50 border-y border-gray-100">
        <div class="max-w-5xl mx-auto px-6 py-20">
          <h2 class="text-3xl font-bold text-center text-gray-900 mb-4">Simple pricing</h2>
          <p class="text-center text-gray-500 mb-14 max-w-lg mx-auto">
            Upgrade or cancel any time.
          </p>

          <PricingTable onCta={openRelayModal} />
        </div>
      </section>

      {/* ── CTA ── */}
      <section class="relative overflow-hidden">
        <div class="absolute inset-0 bg-[radial-gradient(ellipse_80%_80%_at_50%_120%,rgba(59,130,246,0.10),transparent)]" />
        <div class="relative max-w-5xl mx-auto px-6 py-28 text-center">
          <h2 class="text-4xl font-extrabold text-gray-900 mb-4">Ready to launch your relay?</h2>
          <p class="text-gray-500 mb-10 max-w-lg mx-auto text-lg">
            Join communities already running on Caravel. Set up in minutes.
          </p>
          <button
            type="button"
            onClick={() => openRelayModal()}
            class="inline-flex items-center gap-2 py-3 px-10 bg-blue-600 text-white font-semibold rounded-xl hover:bg-blue-700 active:scale-95 transition-all shadow-lg shadow-blue-200 text-lg"
          >
            Create your relay
            <svg class="w-5 h-5" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12h14M12 5l7 7-7 7" /></svg>
          </button>
        </div>
      </section>

      {/* ── Footer ── */}
      <footer class="border-t border-gray-100 bg-gray-50">
        <div class="max-w-5xl mx-auto px-6 py-8 flex flex-col sm:flex-row items-center justify-between gap-4 text-sm text-gray-400">
          <div class="flex items-center gap-2 font-semibold text-gray-500">
            <img src="/caravel.png" alt="Caravel" class="w-5 h-5 rounded" />
            Caravel
          </div>
          <p>© {new Date().getFullYear()} Caravel. Built on Nostr.</p>
          <div class="flex gap-4">
            <a href="https://flotilla.social" target="_blank" rel="noopener noreferrer" class="hover:text-gray-600 transition-colors">Flotilla</a>
            <a href="https://chachi.chat" target="_blank" rel="noopener noreferrer" class="hover:text-gray-600 transition-colors">Chachi</a>
            <a href="https://nostrord.com/" target="_blank" rel="noopener noreferrer" class="hover:text-gray-600 transition-colors">Nostrord</a>
          </div>
        </div>
      </footer>

      <Modal
        open={showRelayModal()}
        onClose={() => setShowRelayModal(false)}
        wrapperClass="fixed inset-0 z-50 flex items-center justify-center bg-black/50 p-4"
        panelClass="w-full max-w-2xl rounded-2xl bg-white p-6 sm:p-8 shadow-2xl"
      >
        <div class="mb-6 flex items-start justify-between gap-4">
          <div>
            <h3 class="text-xl font-bold text-gray-900">Create your relay</h3>
            <p class="mt-1 text-sm text-gray-500">Start with a free relay. You can upgrade later.</p>
          </div>
          <button
            type="button"
            class="rounded-md p-1 text-gray-400 hover:bg-gray-100 hover:text-gray-700"
            onClick={() => setShowRelayModal(false)}
            aria-label="Close"
          >
            <svg class="h-5 w-5" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M18 6L6 18M6 6l12 12" /></svg>
          </button>
        </div>

        <RelayForm
          syncSubdomainWithName
          initialValues={{ plan_id: initialPlanId() }}
          onSubmit={onRelayFormSubmit}
          submitLabel="Continue"
          submittingLabel="Creating..."
        />
      </Modal>

      <Modal
        open={showLoginModal()}
        onClose={() => setShowLoginModal(false)}
        wrapperClass="fixed inset-0 z-50 flex items-center justify-center bg-black/50"
        panelClass="w-full max-w-3xl mx-4 rounded-2xl"
      >
        <Login
          inModal
          onClose={() => setShowLoginModal(false)}
          onAuthenticated={onAuthenticated}
        />
      </Modal>

      <Show when={pendingInvoice()}>
        {(inv) => (
          <PaymentDialog
            invoice={inv()}
            open={true}
            onClose={handleInvoiceClose}
          />
        )}
      </Show>
      <PaymentSetup
        open={paymentSetupOpen()}
        onClose={handleSetupClose}
      />
    </div>
  )
}