"use client";

import Link from "next/link";
import { useRef } from "react";
import { ScrollReveal } from "@/components/ScrollReveal";
import { SectionScrollTitle } from "@/components/SectionScrollTitle";
import { SignInButton } from "@/components/SignInButton";
import { SALES_EMAIL } from "@/lib/plans";

const FEATURE_LABELS = [
  "Infrastructure",
  "Limit",
  "Batch mode",
  "File type",
  "Playlists",
  "API support",
  "ID3 tags",
  "Support",
  "Watermark",
] as const;

type PlanFeatures = Record<(typeof FEATURE_LABELS)[number], string>;

type InfrastructureChip = "cloud" | "self-hosted";

type PlanConfig = {
  name: string;
  badge: string;
  price: string;
  priceNote: string;
  features: PlanFeatures;
  infrastructureChips: InfrastructureChip[];
  watermarkNote?: string;
  cta:
    | { type: "signin" }
    | { type: "link"; label: string; href: string }
    | { type: "disabled"; label: string }
    | { type: "mailto"; label: string; email: string; subject: string };
  highlighted: boolean;
  hover: string;
  accent: string;
  badgeClass: string;
  ctaClass?: string;
};

const PLANS: PlanConfig[] = [
  {
    name: "Bedroom Producer",
    badge: "Free",
    price: "€0",
    priceNote: "/ forever",
    features: {
      Infrastructure: "Cloud",
      Limit: "14 videos / 12 hours · 720p",
      "Batch mode": "Limited batch · up to 3 files",
      "File type": "MP3",
      Playlists: "Not included",
      "API support": "Not included",
      "ID3 tags": "Auto-fill title & metadata from MP3 tags",
      Support: "Community",
      Watermark: "Optional · support badge",
    },
    infrastructureChips: ["cloud"],
    watermarkNote:
      "Show \"Uploaded through Songs2YT.com\" to support open-source development - opt out anytime for a clean video.",
    cta: { type: "signin" },
    highlighted: false,
    hover:
      "hover:border-red-500/40 hover:bg-red-500/[0.04] hover:shadow-lg hover:shadow-red-500/15",
    accent: "text-red-400",
    badgeClass: "bg-gray-800 text-gray-400",
  },
  {
    name: "Independent Artist",
    badge: "Pro",
    price: "€5",
    priceNote: "/ mo",
    features: {
      Infrastructure: "Cloud",
      Limit: "50 videos* / month · 1080p",
      "Batch mode": "Full batch · up to 5 files",
      "File type": "MP3 / WAV / FLAC",
      Playlists: "Create & add uploads to YouTube playlists",
      "API support": "REST API · upload, batch & playlists",
      "ID3 tags": "Extended metadata support",
      Support: "E-Mail",
      Watermark: "Fully customizable · remove completely",
    },
    infrastructureChips: ["cloud"],
    cta: { type: "disabled", label: "Coming soon" },
    highlighted: true,
    hover:
      "hover:border-accent/50 hover:bg-accent/[0.06] hover:shadow-lg hover:shadow-accent/20",
    accent: "text-accent",
    badgeClass: "bg-accent/15 text-accent",
  },
  {
    name: "Record Label / Studio",
    badge: "Enterprise",
    price: "Custom",
    priceNote: "/ contact sales",
    features: {
      Infrastructure: "Cloud or self-hosted",
      Limit: "Unlimited 4K · zero limit",
      "Batch mode": "Unlimited synchronized batch processing",
      "File type": "WAV / FLAC / lossless",
      Playlists: "Org-wide playlist workflows",
      "API support": "Full API access · custom integrations & SLAs",
      "ID3 tags": "Full metadata · custom mapping",
      Support: "Top-priority**",
      Watermark: "Fully customizable · remove completely",
    },
    infrastructureChips: ["cloud", "self-hosted"],
    cta: {
      type: "mailto",
      label: "Contact Sales",
      email: SALES_EMAIL,
      subject: "Songs2YT Enterprise Inquiry",
    },
    highlighted: false,
    hover:
      "hover:border-[#609926]/45 hover:bg-[#609926]/[0.06] hover:shadow-lg hover:shadow-[#609926]/20",
    accent: "text-[#609926]",
    badgeClass: "bg-[#609926]/15 text-[#609926]",
    ctaClass:
      "border-[#609926]/40 bg-[#609926]/10 text-[#609926] hover:border-[#609926]/60 hover:bg-[#609926]/20",
  },
];

function FeatureValue({ value }: { value: string }) {
  return <span className="text-sm text-gray-200">{value}</span>;
}

function CloudIcon({ className }: { className?: string }) {
  return (
    <svg
      className={className}
      viewBox="0 0 24 24"
      fill="none"
      stroke="currentColor"
      strokeWidth="1.5"
      aria-hidden="true"
    >
      <path
        d="M7.5 18.5h9.75a4.25 4.25 0 0 0 .55-8.46A5.75 5.75 0 0 0 6.9 8.8 4.5 4.5 0 0 0 7.5 18.5Z"
        strokeLinecap="round"
        strokeLinejoin="round"
      />
    </svg>
  );
}

function ServerIcon({ className }: { className?: string }) {
  return (
    <svg
      className={className}
      viewBox="0 0 24 24"
      fill="none"
      stroke="currentColor"
      strokeWidth="1.5"
      aria-hidden="true"
    >
      <rect x="4" y="5" width="16" height="6" rx="2" />
      <rect x="4" y="13" width="16" height="6" rx="2" />
      <path d="M7.5 8h.01M7.5 16h.01" strokeLinecap="round" />
    </svg>
  );
}

function InfrastructureChips({
  chips,
}: {
  chips: InfrastructureChip[];
}) {
  return (
    <div className="mt-2 flex flex-wrap items-center gap-2">
      {chips.includes("cloud") && (
        <span className="inline-flex items-center gap-2 rounded-lg border border-gray-700/60 bg-surface-dark/40 px-3 py-2 text-sm text-gray-200">
          <CloudIcon className="h-4 w-4 text-gray-300" />
          Cloud
        </span>
      )}
      {chips.includes("self-hosted") && (
        <span className="inline-flex items-center gap-2 rounded-lg border border-gray-700/60 bg-surface-dark/40 px-3 py-2 text-sm text-gray-200">
          <ServerIcon className="h-4 w-4 text-gray-300" />
          Self-hosted
        </span>
      )}
    </div>
  );
}

function PricingCard({ plan }: { plan: PlanConfig }) {
  const {
    name,
    badge,
    price,
    priceNote,
    features,
    watermarkNote,
    infrastructureChips,
    cta,
    highlighted,
    hover,
    accent,
    badgeClass,
    ctaClass,
  } = plan;

  return (
    <div
      className={`group relative flex h-full flex-col rounded-2xl border bg-surface p-6 transition-all duration-300 sm:p-7 ${
        highlighted
          ? "border-accent/40 shadow-[0_0_32px_rgba(74,158,255,0.12)]"
          : "border-gray-700/50"
      } ${hover}`}
    >
      {highlighted && (
        <span className="absolute -top-3 left-1/2 -translate-x-1/2 rounded-full bg-accent px-3 py-1 text-[10px] font-semibold uppercase tracking-wider text-white">
          Most popular
        </span>
      )}

      <div className="mb-6">
        <div className="mb-3 flex items-start justify-between gap-3">
          <h3 className="text-lg font-semibold text-white">{name}</h3>
          <span
            className={`shrink-0 rounded px-2 py-0.5 text-[10px] font-medium uppercase tracking-wider ${badgeClass}`}
          >
            {badge}
          </span>
        </div>

        <div className="flex items-end gap-1">
          <span className={`text-4xl font-bold ${accent}`}>{price}</span>
          <span className="mb-1 text-sm text-gray-500">{priceNote}</span>
        </div>
      </div>

      <ul className="mb-6 flex-1 space-y-4 border-t border-gray-700/50 pt-6">
        {FEATURE_LABELS.map((label) => (
          <li key={label}>
            <p className="text-xs font-medium uppercase tracking-wider text-gray-500">{label}</p>
            {label === "Infrastructure" ? (
              <InfrastructureChips chips={infrastructureChips} />
            ) : (
              <FeatureValue value={features[label]} />
            )}
            {label === "Watermark" && watermarkNote && (
              <p className="mt-1.5 rounded-lg border border-gray-700/60 bg-surface-dark/80 px-3 py-2 text-xs leading-relaxed text-gray-400">
                {watermarkNote}
              </p>
            )}
          </li>
        ))}
      </ul>

      <div className="mt-auto">
        {cta.type === "signin" && <SignInButton fullWidth />}
        {cta.type === "link" && (
          <Link
            href={cta.href}
            className={`inline-flex w-full items-center justify-center rounded border px-4 py-3 text-sm font-medium transition-all duration-300 ${ctaClass ?? "border-gray-600 text-white hover:border-gray-400"}`}
          >
            {cta.label}
          </Link>
        )}
        {cta.type === "disabled" && (
          <button
            type="button"
            disabled
            className="w-full cursor-not-allowed rounded border border-gray-700 bg-surface-light px-4 py-3 text-sm font-medium text-gray-500"
          >
            {cta.label}
          </button>
        )}
        {cta.type === "mailto" && (
          <a
            href={`mailto:${cta.email}?subject=${encodeURIComponent(cta.subject)}`}
            className={`inline-flex w-full items-center justify-center rounded border px-4 py-3 text-sm font-medium transition-all duration-300 ${ctaClass ?? ""}`}
          >
            {cta.label}
          </a>
        )}
      </div>
    </div>
  );
}

export function PricingSection() {
  const sectionRef = useRef<HTMLElement>(null);

  return (
    <section
      ref={sectionRef}
      id="pricing"
      className="relative scroll-mt-24 overflow-x-visible overflow-y-hidden px-6 py-24"
    >
      <SectionScrollTitle sectionRef={sectionRef} title="Pricing" />

      <div className="relative z-10 mx-auto max-w-7xl">
        <ScrollReveal>
          <h2 className="mb-4 text-center text-3xl font-bold text-white">Pricing</h2>
          <p className="mx-auto mb-10 max-w-2xl text-center text-gray-400">
            Free for getting started, Pro for creators, or Enterprise for teams.
          </p>
        </ScrollReveal>

        <div className="grid gap-6 sm:grid-cols-2 xl:grid-cols-3 xl:gap-6">
          {PLANS.map((plan, index) => (
            <ScrollReveal key={plan.name} delay={index * 100}>
              <PricingCard plan={plan} />
            </ScrollReveal>
          ))}
        </div>

        <ScrollReveal delay={360}>
          <p className="mx-auto mt-10 max-w-2xl text-center text-xs text-gray-500">
            *Pro is a monthly subscription with included quota (extensions via support). Self-hosted
            open-source deployments have no quotas.
          </p>
          <p className="mx-auto mt-4 max-w-2xl text-center text-xs text-gray-500">
            Technical support is strictly reserved for Managed Cloud and paid Professional Setup
            agreements; independent self-hosted deployments are community-supported.
          </p>
        </ScrollReveal>
      </div>
    </section>
  );
}