"use client"

import { useState } from "react"
import Link from "next/link"
import { motion } from "motion/react"
import {
    QrCodeIcon,
    GaugeIcon,
    UploadIcon,
    Gamepad2Icon,
    ShieldCheckIcon,
    ZapIcon,
    DownloadIcon,
    TerminalIcon,
    ArrowRightIcon,
    CopyIcon,
    CheckIcon,
    CodeIcon,
} from "lucide-react"

// ── Screenshot slots ────────────────────────────────────────────
// Each screenshot is a self-contained card. Until you drop real
// screenshots into /public/plugin/ and set showScreenshot=true, a
// styled placeholder describing the exact shot to capture is shown.
interface Shot {
    id: string
    title: string
    caption: string
    // filename the user should save the capture as (in /public/plugin/)
    file: string
    // true = present as a device photo (rounded, shadow) instead of a flat
    // screenshot. Use for in-game shots where the QAM overlay can't be
    // captured by Steam's screenshot shortcut, so a phone photo is used.
    photo?: boolean
}

const SCREENSHOTS: Shot[] = [
    {
        id: "panel-overview",
        title: "The plugin panel",
        caption:
            "The full DeckyVault panel in the Quick Access Menu — recording, account, and setup sections all in one scrollable view.",
        file: "panel-overview.jpg",
    },
    {
        id: "pair-qr",
        title: "Pair with your phone",
        caption:
            "Tap 'Pair with Phone' and a QR code appears. Scan it with your phone, confirm on deckyvault.xyz, and your account links automatically — no copy-pasting API keys.",
        file: "pair-qr.jpg",
    },
    {
        id: "launch-option",
        title: "Add the launch option",
        caption:
            "In Steam, right-click your game → Properties → Launch Options, and paste the MangoHud wrapper command. Copy it straight from the plugin.",
        file: "launch-option.jpg",
    },
    {
        id: "recording",
        title: "Record while you play",
        caption:
            "Once in-game, open the panel and hit Start Recording. A live timer tracks your session. Stop when you're done benchmarking.",
        file: "recording.png",
        photo: true,
    },
    {
        id: "session-form",
        title: "Review & submit",
        caption:
            "After stopping, review the captured FPS, 1% lows, and power draw. Add notes, then upload straight to DeckyVault — or export to a file.",
        file: "session-form.png",
        photo: true,
    },
    {
        id: "entry-live",
        title: "See it on DeckyVault",
        caption:
            "Your submission appears on the game's page instantly — FPS averages, frame-time consistency, and TDP, all tied to your account.",
        file: "entry-live.jpg",
    },
]

// Screenshot files that actually exist in /public/plugin/ — flip these
// to true once you've captured and saved the corresponding file.
const HAS_SCREENSHOT: Record<string, boolean> = {
    "panel-overview": true,
    "pair-qr": true,
    "launch-option": true,
    recording: false,
    "session-form": false,
    "entry-live": true,
}

const LAUNCH_COMMAND = "~/deckyvault-mangohud.sh %command%"

const FEATURES = [
    {
        icon: GaugeIcon,
        title: "Capture real gameplay",
        body: "Records FPS, frame times, and 1% lows with MangoHud — not synthetic benchmarks, but how the game actually runs on your Deck.",
    },
    {
        icon: ZapIcon,
        title: "Power draw & TDP",
        body: "Measures CPU + GPU power and adds peripheral overhead (screen, fan, speakers) for a realistic estimate of total system draw.",
    },
    {
        icon: QrCodeIcon,
        title: "QR-code pairing",
        body: "Link the plugin to your DeckyVault account by scanning a QR code with your phone. No manual key entry, no fiddly typing.",
    },
    {
        icon: UploadIcon,
        title: "One-tap upload",
        body: "Submit entries straight to DeckyVault from the Quick Access Menu. They appear on the game's page instantly, tied to your profile.",
    },
    {
        icon: Gamepad2Icon,
        title: "Auto game detection",
        body: "Detects the running game and its Steam App ID, reads the Proton version, and resolves the game name automatically.",
    },
    {
        icon: ShieldCheckIcon,
        title: "Your key, your control",
        body: "Pairing creates a real API key you can view and revoke anytime from Settings → API Keys. Nothing is stored without your say-so.",
    },
]

const STEPS = [
    {
        icon: DownloadIcon,
        title: "Install Decky Loader",
        body: (
            <>
                If you haven&apos;t, install{" "}
                <a
                    href="https://github.com/SteamDeckHomebrew/decky-loader"
                    target="_blank"
                    rel="noopener noreferrer"
                    className="text-primary hover:underline"
                >
                    Decky Loader
                </a>{" "}
                on your Steam Deck. Then install the DeckyVault plugin from the
                Plugin Browser, or from the ZIP below.
            </>
        ),
    },
    {
        icon: QrCodeIcon,
        title: "Pair your account",
        body: (
            <>
                Open the plugin in the Quick Access Menu → <strong>Account</strong> →{" "}
                <strong>Pair with Phone</strong>. Scan the QR code with your phone
                and confirm on deckyvault.xyz. Your API key is created and saved
                automatically.
            </>
        ),
    },
    {
        icon: TerminalIcon,
        title: "Set the launch option",
        body: (
            <>
                In <strong>MangoHud Setup</strong>, tap <strong>Write Config</strong>.
                Then add the launch option to your game (Steam → right-click →
                Properties → Launch Options):
            </>
        ),
        code: LAUNCH_COMMAND,
    },
    {
        icon: GaugeIcon,
        title: "Record & upload",
        body: (
            <>
                Launch the game, open the panel, and hit <strong>Start Recording</strong>{" "}
                once you&apos;re in-game. When you&apos;re done, stop it, review the
                stats, and <strong>upload to DeckyVault</strong>.
            </>
        ),
    },
]

export function PluginPageClient() {
    const [copied, setCopied] = useState(false)

    async function copyCommand() {
        try {
            await navigator.clipboard.writeText(LAUNCH_COMMAND)
            setCopied(true)
            setTimeout(() => setCopied(false), 2000)
        } catch {
            // ignore
        }
    }

    return (
        <div className="min-h-screen">
            {/* ── Hero ────────────────────────────────────────────── */}
            <section className="relative overflow-hidden px-4 md:px-[10svw] pt-16 pb-12 md:pt-24 md:pb-20">
                <div
                    className="absolute inset-0 -z-10 opacity-40"
                    style={{
                        background:
                            "radial-gradient(60% 50% at 50% 0%, rgba(27,155,243,0.25) 0%, transparent 70%)",
                    }}
                />
                <div className="max-w-5xl mx-auto flex flex-col items-center text-center gap-6">
                    <motion.div
                        initial={{ opacity: 0, y: 10 }}
                        animate={{ opacity: 1, y: 0 }}
                        className="inline-flex items-center gap-2 px-3 py-1 rounded-full border border-primary/30 bg-primary/10 text-primary text-xs font-medium"
                    >
                        <Gamepad2Icon className="h-3.5 w-3.5" />
                        Decky Loader Plugin · v1.0.0
                    </motion.div>

                    <motion.h1
                        initial={{ opacity: 0, y: 12 }}
                        animate={{ opacity: 1, y: 0 }}
                        transition={{ delay: 0.05 }}
                        className="text-3xl md:text-5xl font-bold tracking-tight"
                    >
                        Benchmark your Steam Deck,{" "}
                        <span className="bg-gradient-to-r from-primary to-blue-400 bg-clip-text text-transparent">
                            straight from the Quick Access Menu
                        </span>
                    </motion.h1>

                    <motion.p
                        initial={{ opacity: 0, y: 12 }}
                        animate={{ opacity: 1, y: 0 }}
                        transition={{ delay: 0.1 }}
                        className="text-base md:text-lg text-text/60 max-w-2xl"
                    >
                        The DeckyVault plugin captures real-world FPS, frame times,
                        and power draw with MangoHud — then uploads them to
                        DeckyVault with a single tap. No spreadsheets, no manual
                        screenshots, no fuss.
                    </motion.p>

                    <motion.div
                        initial={{ opacity: 0, y: 12 }}
                        animate={{ opacity: 1, y: 0 }}
                        transition={{ delay: 0.15 }}
                        className="flex flex-col sm:flex-row gap-3 mt-2"
                    >
                        <a
                            href="https://github.com/AdrianBonpin/deckyvault/releases"
                            target="_blank"
                            rel="noopener noreferrer"
                            className="inline-flex items-center justify-center gap-2 px-5 py-2.5 rounded-lg bg-primary text-white text-sm font-medium hover:bg-primary/90 transition-colors"
                        >
                            <DownloadIcon className="h-4 w-4" />
                            Download Plugin ZIP
                        </a>
                        <Link
                            href="#install"
                            className="inline-flex items-center justify-center gap-2 px-5 py-2.5 rounded-lg border border-border text-text text-sm font-medium hover:border-primary/40 hover:text-primary transition-colors"
                        >
                            Installation Guide
                            <ArrowRightIcon className="h-4 w-4" />
                        </Link>
                    </motion.div>
                </div>
            </section>

            {/* ── Features grid ────────────────────────────────────── */}
            <section className="px-4 md:px-[10svw] py-12 md:py-16">
                <div className="max-w-6xl mx-auto">
                    <h2 className="text-2xl md:text-3xl font-bold text-center mb-2">
                        Built for the Steam Deck
                    </h2>
                    <p className="text-text/50 text-center mb-10 max-w-xl mx-auto">
                        Everything you need to capture and share performance data,
                        designed around the Deck&apos;s controller-friendly UI.
                    </p>
                    <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-4">
                        {FEATURES.map((f, i) => (
                            <motion.div
                                key={f.title}
                                initial={{ opacity: 0, y: 14 }}
                                whileInView={{ opacity: 1, y: 0 }}
                                viewport={{ once: true }}
                                transition={{ delay: i * 0.05 }}
                                className="rounded-xl border border-border bg-text/2 p-5 flex flex-col gap-3"
                            >
                                <div className="w-10 h-10 rounded-lg bg-primary/10 border border-primary/20 flex items-center justify-center">
                                    <f.icon className="h-5 w-5 text-primary" />
                                </div>
                                <h3 className="font-semibold text-sm">{f.title}</h3>
                                <p className="text-sm text-text/55 leading-relaxed">
                                    {f.body}
                                </p>
                            </motion.div>
                        ))}
                    </div>
                </div>
            </section>

            {/* ── How it works (steps) ─────────────────────────────── */}
            <section
                id="install"
                className="px-4 md:px-[10svw] py-12 md:py-16 border-t border-border"
            >
                <div className="max-w-4xl mx-auto">
                    <h2 className="text-2xl md:text-3xl font-bold text-center mb-2">
                        How it works
                    </h2>
                    <p className="text-text/50 text-center mb-12 max-w-xl mx-auto">
                        Four steps from install to your first uploaded benchmark.
                    </p>

                    <div className="flex flex-col gap-6">
                        {STEPS.map((step, i) => (
                            <motion.div
                                key={step.title}
                                initial={{ opacity: 0, x: -16 }}
                                whileInView={{ opacity: 1, x: 0 }}
                                viewport={{ once: true }}
                                transition={{ delay: i * 0.05 }}
                                className="flex gap-4 md:gap-6"
                            >
                                <div className="flex flex-col items-center shrink-0">
                                    <div className="w-11 h-11 rounded-full bg-primary text-white flex items-center justify-center font-semibold">
                                        {i + 1}
                                    </div>
                                    {i < STEPS.length - 1 && (
                                        <div className="w-px flex-1 bg-border mt-2 min-h-[24px]" />
                                    )}
                                </div>
                                <div className="flex-1 pb-2">
                                    <div className="flex items-center gap-2 mb-1">
                                        <step.icon className="h-4 w-4 text-primary" />
                                        <h3 className="font-semibold">{step.title}</h3>
                                    </div>
                                    <p className="text-sm text-text/60 leading-relaxed mb-3">
                                        {step.body}
                                    </p>
                                    {step.code && (
                                        <div className="flex items-center gap-2 rounded-lg border border-border bg-text/5 p-3 max-w-md">
                                            <code className="flex-1 font-mono text-xs md:text-sm text-text/80 break-all">
                                                {step.code}
                                            </code>
                                            <button
                                                onClick={copyCommand}
                                                className="shrink-0 p-1.5 rounded hover:bg-text/10 text-text/50 hover:text-text transition-colors"
                                                title="Copy"
                                            >
                                                {copied ? (
                                                    <CheckIcon className="h-4 w-4 text-green-400" />
                                                ) : (
                                                    <CopyIcon className="h-4 w-4" />
                                                )}
                                            </button>
                                        </div>
                                    )}
                                </div>
                            </motion.div>
                        ))}
                    </div>
                </div>
            </section>

            {/* ── Screenshots gallery ──────────────────────────────── */}
            <section className="px-4 md:px-[10svw] py-12 md:py-16 border-t border-border">
                <div className="max-w-6xl mx-auto">
                    <h2 className="text-2xl md:text-3xl font-bold text-center mb-2">
                        See it in action
                    </h2>
                    <p className="text-text/50 text-center mb-12 max-w-xl mx-auto">
                        A walkthrough of the plugin, from pairing to publishing.
                    </p>

                    <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
                        {SCREENSHOTS.map((shot, i) => (
                            <motion.figure
                                key={shot.id}
                                initial={{ opacity: 0, y: 16 }}
                                whileInView={{ opacity: 1, y: 0 }}
                                viewport={{ once: true }}
                                transition={{ delay: i * 0.05 }}
                                className="rounded-xl border border-border bg-text/2 overflow-hidden flex flex-col"
                            >
                                <div className="relative aspect-[16/10] bg-gradient-to-br from-text/5 to-text/10 flex items-center justify-center p-3">
                                    {HAS_SCREENSHOT[shot.id] ? (
                                        // eslint-disable-next-line @next/next/no-img-element
                                        <img
                                            src={`/plugin/${shot.file}`}
                                            alt={shot.title}
                                            className={shot.photo
                                                ? "max-w-full max-h-full object-contain rounded-lg shadow-2xl shadow-black/40 ring-1 ring-black/20"
                                                : "w-full h-full object-contain"}
                                        />
                                    ) : (
                                        <div className="flex flex-col items-center gap-2 text-text/30 p-6 text-center">
                                            <Gamepad2Icon className="h-10 w-10" />
                                            <span className="text-xs font-mono">
                                                /plugin/{shot.file}
                                            </span>
                                            <span className="text-xs">
                                                {shot.photo ? "device photo" : "screenshot"} coming soon
                                            </span>
                                        </div>
                                    )}
                                </div>
                                <figcaption className="p-4 flex flex-col gap-1">
                                    <div className="text-sm font-semibold flex items-center gap-2">
                                        <span className="w-5 h-5 rounded-full bg-primary/15 text-primary text-[10px] font-bold flex items-center justify-center">
                                            {i + 1}
                                        </span>
                                        {shot.title}
                                    </div>
                                    <p className="text-xs text-text/55 leading-relaxed pl-7">
                                        {shot.caption}
                                    </p>
                                </figcaption>
                            </motion.figure>
                        ))}
                    </div>
                </div>
            </section>

            {/* ── Install CTA ──────────────────────────────────────── */}
            <section className="px-4 md:px-[10svw] py-12 md:py-20 border-t border-border">
                <div className="max-w-3xl mx-auto rounded-2xl border border-border bg-text/2 p-8 md:p-10 flex flex-col items-center text-center gap-5">
                    <div className="w-14 h-14 rounded-2xl bg-primary/10 border border-primary/20 flex items-center justify-center">
                        <DownloadIcon className="h-7 w-7 text-primary" />
                    </div>
                    <h2 className="text-xl md:text-2xl font-bold">
                        Ready to start benchmarking?
                    </h2>
                    <p className="text-text/60 max-w-md text-sm">
                        Download the plugin ZIP and install it via Decky Loader&apos;s{" "}
                        <em>Install Plugin from ZIP File</em> option, or grab it from
                        URL.
                    </p>
                    <div className="flex flex-col sm:flex-row gap-3">
                        <a
                            href="https://github.com/AdrianBonpin/deckyvault/releases"
                            target="_blank"
                            rel="noopener noreferrer"
                            className="inline-flex items-center justify-center gap-2 px-5 py-2.5 rounded-lg bg-primary text-white text-sm font-medium hover:bg-primary/90 transition-colors"
                        >
                            <DownloadIcon className="h-4 w-4" />
                            Download ZIP
                        </a>
                        <a
                            href="https://github.com/AdrianBonpin/deckyvault"
                            target="_blank"
                            rel="noopener noreferrer"
                            className="inline-flex items-center justify-center gap-2 px-5 py-2.5 rounded-lg border border-border text-text text-sm font-medium hover:border-primary/40 hover:text-primary transition-colors"
                        >
                            <CodeIcon className="h-4 w-4" />
                            View Source
                        </a>
                    </div>
                </div>
            </section>
        </div>
    )
}