"use client"

import { useState } from "react"
import Link from "next/link"
import { motion } from "framer-motion"
import { Check, X, Zap, ShieldCheck } from "lucide-react"
import { cn } from "@/lib/utils"
import { PLAN_AMOUNTS } from "@/lib/stripe/plans"

const PLANS = [
  {
    key: "starter",
    name: "Starter",
    monthlyPrice: PLAN_AMOUNTS.starter,
    description: "For landlords just getting started.",
    highlight: false,
    cta: "Get started free",
    ctaHref: "/signup",
    features: ["1 property", "Up to 3 tenants", "100 MB storage", "Rent tracking", "Maintenance portal", "Lease tracking", "Tenant portal"],
  },
  {
    key: "pro",
    name: "Pro",
    monthlyPrice: PLAN_AMOUNTS.pro,
    description: "For active landlords growing their portfolio.",
    highlight: true,
    badge: "Most popular",
    cta: "Start Pro",
    ctaHref: "/signup",
    features: ["10 properties", "Unlimited tenants", "5 GB storage", "50 AI calls/mo", "Email reminders", "Stripe payment links", "Lease expiry alerts", "CSV export"],
  },
  {
    key: "landlord",
    name: "Landlord",
    monthlyPrice: PLAN_AMOUNTS.landlord,
    description: "For serious portfolios at scale.",
    highlight: false,
    cta: "Start Landlord",
    ctaHref: "/signup",
    features: ["Unlimited properties", "Unlimited tenants", "25 GB storage", "200 AI calls/mo", "Team access", "White-label portal", "Priority support"],
  },
  {
    key: "lifetime",
    name: "Lifetime",
    monthlyPrice: null,
    fixedPrice: PLAN_AMOUNTS.lifetime,
    description: "Pay once, own it forever.",
    highlight: false,
    badge: "Best value",
    cta: "Get lifetime access",
    ctaHref: "/signup",
    features: ["Everything in Landlord", "No recurring fees — ever", "All future updates", "White-label portal", "Team access", "25 GB storage"],
  },
]

const COMPARISON = [
  { feature: "Properties",           starter: "1",      pro: "10",         landlord: "Unlimited", lifetime: "Unlimited" },
  { feature: "Tenants",              starter: "3",      pro: "Unlimited",  landlord: "Unlimited", lifetime: "Unlimited" },
  { feature: "Storage",              starter: "100 MB", pro: "5 GB",       landlord: "25 GB",     lifetime: "25 GB" },
  { feature: "AI calls / month",     starter: false,    pro: "50",         landlord: "200",       lifetime: "200" },
  { feature: "Email reminders",      starter: false,    pro: true,         landlord: true,        lifetime: true },
  { feature: "Stripe payment links", starter: false,    pro: true,         landlord: true,        lifetime: true },
  { feature: "Team access",          starter: false,    pro: false,        landlord: true,        lifetime: true },
  { feature: "White-label portal",   starter: false,    pro: false,        landlord: true,        lifetime: true },
  { feature: "CSV export",           starter: true,     pro: true,         landlord: true,        lifetime: true },
  { feature: "Lease expiry alerts",  starter: true,     pro: true,         landlord: true,        lifetime: true },
]

function Cell({ val }: { val: string | boolean }) {
  if (val === true)  return <Check className="mx-auto h-4 w-4 text-emerald-400" />
  if (val === false) return <X className="mx-auto h-4 w-4 text-white/20" />
  return <span className="text-sm font-medium text-white/80">{val}</span>
}

export function PricingSection({ annualEnabled = false }: { annualEnabled?: boolean }) {
  const [annual, setAnnual] = useState(false)
  const DISCOUNT = 0.8

  return (
    <section id="pricing" className="relative py-24 overflow-hidden">
      {/* Section background */}
      <div className="absolute inset-0 -z-10 bg-gradient-to-b from-transparent via-indigo-950/20 to-transparent" />
      <div className="absolute inset-0 -z-10" style={{
        backgroundImage: "radial-gradient(ellipse 80% 50% at 50% 0%, rgba(99,102,241,0.08) 0%, transparent 70%)"
      }} />

      <div className="mx-auto max-w-6xl px-4 sm:px-6">
        {/* Header */}
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          whileInView={{ opacity: 1, y: 0 }}
          viewport={{ once: true }}
          className="mb-12 text-center"
        >
          <p className="mb-3 text-xs font-semibold uppercase tracking-widest text-indigo-400">Pricing</p>
          <h2 className="text-3xl font-bold text-white sm:text-4xl">Simple, honest pricing</h2>
          <p className="mt-3 text-white/50">Start free, upgrade when you grow. No per-unit fees, ever.</p>

          {/* Toggle — only shown when annual billing is actually purchasable.
              When annual isn't configured we stay monthly-only rather than
              advertising a plan that can't be bought. */}
          {annualEnabled && (
            <div className="mt-8 inline-flex items-center rounded-full border border-white/10 bg-white/[0.04] p-1.5">
              <button
                onClick={() => setAnnual(false)}
                className={cn(
                  "rounded-full px-4 sm:px-5 py-1.5 sm:py-2 text-xs sm:text-sm font-medium transition-all duration-200",
                  !annual ? "bg-indigo-600 text-white shadow-lg shadow-indigo-500/30" : "text-white/50 hover:text-white"
                )}
              >
                Monthly
              </button>
              <button
                onClick={() => setAnnual(true)}
                className={cn(
                  "flex items-center gap-1.5 sm:gap-2 rounded-full px-4 sm:px-5 py-1.5 sm:py-2 text-xs sm:text-sm font-medium transition-all duration-200",
                  annual ? "bg-indigo-600 text-white shadow-lg shadow-indigo-500/30" : "text-white/50 hover:text-white"
                )}
              >
                Annual
                <span className="rounded-full bg-emerald-500/20 px-2 py-0.5 text-[10px] font-bold text-emerald-400 border border-emerald-500/30">
                  –20%
                </span>
              </button>
            </div>
          )}
        </motion.div>

        {/* Plan cards */}
        <div className="grid gap-4 sm:grid-cols-2 lg:grid-cols-4 items-start">
          {PLANS.map((plan, i) => {
            const isLifetime = plan.fixedPrice !== undefined
            const displayPrice = isLifetime
              ? `$${plan.fixedPrice}`
              : plan.monthlyPrice === 0
                ? "Free"
                : annual
                  ? `$${Math.round(plan.monthlyPrice! * DISCOUNT * 12)}`
                  : `$${plan.monthlyPrice}`
            const interval = isLifetime
              ? " one-time"
              : plan.monthlyPrice === 0
                ? ""
                : annual ? "/yr" : "/mo"

            return (
              <motion.div
                key={plan.key}
                initial={{ opacity: 0, y: 24 }}
                whileInView={{ opacity: 1, y: 0 }}
                viewport={{ once: true }}
                transition={{ delay: i * 0.08 }}
                className={cn(
                  "relative flex flex-col rounded-2xl p-6 transition-all duration-300",
                  plan.highlight
                    ? "border-2 border-indigo-500/60 bg-gradient-to-b from-indigo-600/15 to-[#16161f] shadow-2xl shadow-indigo-500/20 ring-1 ring-indigo-500/20"
                    : "border border-white/10 bg-[#16161f] hover:border-white/20"
                )}
              >
                {plan.badge && (
                  <div className="absolute -top-3.5 left-1/2 -translate-x-1/2 z-10">
                    <span className={cn(
                      "flex items-center gap-1.5 rounded-full px-3.5 py-1.5 text-xs font-semibold shadow-lg",
                      plan.highlight
                        ? "bg-indigo-600 text-white shadow-indigo-500/40"
                        : "bg-[#1d1d28] border border-white/10 text-white/70"
                    )}>
                      <Zap className="h-3 w-3" />
                      {plan.badge}
                    </span>
                  </div>
                )}

                {/* Plan name + price */}
                <div className="mb-6 pt-1">
                  <p className={cn("text-xs font-semibold uppercase tracking-wide mb-2", plan.highlight ? "text-indigo-400" : "text-white/40")}>
                    {plan.name}
                  </p>
                  <div className="flex items-baseline gap-1">
                    <span className="text-3xl sm:text-4xl font-extrabold text-white tracking-tight">{displayPrice}</span>
                    {interval && <span className="text-sm text-white/40 ml-0.5">{interval}</span>}
                  </div>
                  {annual && !isLifetime && plan.monthlyPrice! > 0 && (
                    <p className="mt-1 text-xs text-emerald-400 font-medium">
                      Saves ${Math.round(plan.monthlyPrice! * 12 * 0.2)}/year
                    </p>
                  )}
                  <p className="mt-2 text-xs text-white/40 leading-relaxed">{plan.description}</p>
                </div>

                {/* CTA */}
                <Link
                  href={plan.ctaHref}
                  className={cn(
                    "mb-6 block rounded-xl px-4 py-2.5 text-center text-sm font-semibold transition-all",
                    plan.highlight
                      ? "bg-indigo-600 text-white hover:bg-indigo-500 hover:shadow-lg hover:shadow-indigo-500/30"
                      : "border border-white/10 bg-white/[0.04] text-white/70 hover:bg-white/[0.08] hover:text-white hover:border-white/20"
                  )}
                >
                  {plan.cta}
                </Link>

                {/* Features */}
                <ul className="flex-1 space-y-2.5">
                  {plan.features.map((f) => (
                    <li key={f} className="flex items-start gap-2.5">
                      <Check className={cn("mt-0.5 h-3.5 w-3.5 flex-shrink-0", plan.highlight ? "text-indigo-400" : "text-white/40")} />
                      <span className="text-xs text-white/60 leading-relaxed">{f}</span>
                    </li>
                  ))}
                </ul>
              </motion.div>
            )
          })}
        </div>

        {/* Money-back guarantee */}
        <motion.div
          initial={{ opacity: 0 }}
          whileInView={{ opacity: 1 }}
          viewport={{ once: true }}
          className="mt-8 flex items-center justify-center gap-2 text-xs text-white/40"
        >
          <ShieldCheck className="h-4 w-4 text-emerald-400" />
          <span>30-day money-back guarantee on all paid plans. No questions asked.</span>
        </motion.div>

        {/* Comparison table */}
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          whileInView={{ opacity: 1, y: 0 }}
          viewport={{ once: true }}
          transition={{ delay: 0.2 }}
          className="mt-16"
        >
          <h3 className="mb-6 text-center text-lg font-semibold text-white">Full feature comparison</h3>
          <div className="overflow-x-auto rounded-2xl border border-white/[0.08] bg-[#16161f]">
            <table className="w-full min-w-[600px]">
              <thead>
                <tr className="border-b border-white/[0.08]">
                  <th className="px-5 py-4 text-left text-xs font-medium text-white/40 w-[40%]">Feature</th>
                  {[
                    { name: "Starter", highlight: false },
                    { name: "Pro", highlight: true },
                    { name: "Landlord", highlight: false },
                    { name: "Lifetime", highlight: false },
                  ].map((h) => (
                    <th key={h.name} className={cn(
                      "px-4 py-4 text-center text-xs font-semibold",
                      h.highlight ? "text-indigo-400" : "text-white/60"
                    )}>
                      {h.name}
                    </th>
                  ))}
                </tr>
              </thead>
              <tbody>
                {COMPARISON.map((row, i) => (
                  <tr key={row.feature} className={cn(
                    "border-b border-white/[0.04] last:border-0",
                    i % 2 === 0 ? "bg-transparent" : "bg-white/[0.015]"
                  )}>
                    <td className="px-5 py-3.5 text-sm text-white/60">{row.feature}</td>
                    <td className="px-4 py-3.5 text-center"><Cell val={row.starter} /></td>
                    <td className="px-4 py-3.5 text-center bg-indigo-500/[0.04]"><Cell val={row.pro} /></td>
                    <td className="px-4 py-3.5 text-center"><Cell val={row.landlord} /></td>
                    <td className="px-4 py-3.5 text-center"><Cell val={row.lifetime} /></td>
                  </tr>
                ))}
              </tbody>
            </table>
          </div>
        </motion.div>
      </div>
    </section>
  )
}