import { Loader2, Sparkles } from 'lucide-react';

import { PlatformActionButton } from '../../common/PlatformActionButton';
import { PlatformStatusMessage } from '../../common/PlatformStatusMessage';
import { PlatformTextField } from '../../common/PlatformTextField';
import { UnifiedModal } from '../../common/UnifiedModal';

export type PuzzleOnboardingPhase = 'input' | 'generating' | 'generated';

type PuzzleOnboardingViewProps = {
  prompt: string;
  phase: PuzzleOnboardingPhase;
  error: string | null;
  copy: string;
  onPromptChange: (value: string) => void;
  onSubmit: () => void;
  onSkip: () => void;
};

export function PuzzleOnboardingView({
  prompt,
  phase,
  error,
  copy,
  onPromptChange,
  onSubmit,
  onSkip,
}: PuzzleOnboardingViewProps) {
  const isGenerating = phase === 'generating';
  const isGenerated = phase === 'generated';
  const canSubmit = Boolean(prompt.trim()) && !isGenerating && !isGenerated;

  return (
    <div className="relative flex min-h-screen items-center justify-center overflow-hidden bg-[radial-gradient(circle_at_30%_15%,rgba(251,191,36,0.22),transparent_30%),linear-gradient(135deg,#0f172a,#111827_46%,#1e1b4b)] px-4 py-8 text-white">
      <div className="absolute inset-0 bg-[linear-gradient(rgba(255,255,255,0.045)_1px,transparent_1px),linear-gradient(90deg,rgba(255,255,255,0.04)_1px,transparent_1px)] bg-[length:38px_38px] opacity-30" />
      <PlatformActionButton
        type="button"
        surface="editorDark"
        tone="ghost"
        size="sm"
        shape="pill"
        disabled={isGenerating}
        onClick={onSkip}
        className="absolute right-4 top-4 z-10 min-h-10 shadow-[0_12px_28px_rgba(0,0,0,0.22)] backdrop-blur sm:right-6 sm:top-6"
      >
        跳过
      </PlatformActionButton>
      <section className="relative flex w-full max-w-[34rem] flex-col items-center gap-5 text-center">
        <div className="grid h-14 w-14 place-items-center rounded-[1.2rem] border border-amber-200/32 bg-amber-200/14 text-amber-100 shadow-[0_18px_48px_rgba(251,191,36,0.18)]">
          {isGenerating ? (
            <Loader2 className="h-6 w-6 animate-spin" />
          ) : (
            <Sparkles className="h-6 w-6" />
          )}
        </div>
        <h1 className="text-[2rem] font-black leading-tight sm:text-[2.85rem]">
          {copy}
        </h1>
        <form
          className="flex w-full flex-col gap-3"
          onSubmit={(event) => {
            event.preventDefault();
            onSubmit();
          }}
        >
          <PlatformTextField
            variant="textarea"
            surface="editorDark"
            tone="warm"
            density="roomy"
            size="lg"
            value={prompt}
            disabled={isGenerating || isGenerated}
            onChange={(event) => onPromptChange(event.target.value)}
            placeholder="把你的梦讲给我听吧"
            rows={4}
            className="min-h-32 rounded-[1.25rem] border-white/14 bg-black/28 py-4 leading-7 shadow-[0_18px_50px_rgba(0,0,0,0.24)] backdrop-blur placeholder:text-white/42 focus:border-amber-200/70 focus:ring-2 focus:ring-amber-200/20 disabled:opacity-70"
          />
          <PlatformActionButton
            type="submit"
            surface="editorDark"
            tone="accent"
            size="lg"
            fullWidth
            disabled={!canSubmit}
          >
            {isGenerating ? (
              <>
                <Loader2 className="h-4 w-4 animate-spin" />
                生成
              </>
            ) : (
              '生成'
            )}
          </PlatformActionButton>
        </form>
        {error ? (
          <PlatformStatusMessage
            tone="error"
            surface="editorDark"
            size="md"
            className="w-full font-semibold"
          >
            {error}
          </PlatformStatusMessage>
        ) : null}
      </section>
    </div>
  );
}

type PuzzleOnboardingLoginOverlayProps = {
  isSaving: boolean;
  error: string | null;
  copy: string;
  onLogin: () => void;
};

export function PuzzleOnboardingLoginOverlay({
  isSaving,
  error,
  copy,
  onLogin,
}: PuzzleOnboardingLoginOverlayProps) {
  return (
    <UnifiedModal
      open
      title={copy}
      onClose={() => undefined}
      portal={false}
      showHeader={false}
      showCloseButton={false}
      closeOnBackdrop={false}
      closeOnEscape={false}
      size="sm"
      zIndexClassName="z-[110]"
      overlayClassName="!items-center bg-slate-950/72 !px-4 !py-6 text-white backdrop-blur-md"
      panelClassName="!max-w-[24rem] !rounded-[1.35rem] border border-white/14 bg-slate-950/94 text-white shadow-[0_28px_90px_rgba(0,0,0,0.5)]"
      bodyClassName="flex flex-col items-center gap-5 !px-5 !py-6 text-center"
    >
      <div className="grid h-12 w-12 place-items-center rounded-[1rem] bg-amber-200 text-slate-950">
        {isSaving ? (
          <Loader2 className="h-5 w-5 animate-spin" />
        ) : (
          <Sparkles className="h-5 w-5" />
        )}
      </div>
      <h2 className="text-2xl font-black leading-tight">{copy}</h2>
      <PlatformActionButton
        type="button"
        surface="editorDark"
        tone="accent"
        size="lg"
        fullWidth
        disabled={isSaving}
        onClick={onLogin}
      >
        {isSaving ? (
          <>
            <Loader2 className="h-4 w-4 animate-spin" />
            注册账号 / 登录
          </>
        ) : (
          '注册账号 / 登录'
        )}
      </PlatformActionButton>
      {error ? (
        <PlatformStatusMessage
          tone="error"
          surface="editorDark"
          size="md"
          className="w-full font-semibold"
        >
          {error}
        </PlatformStatusMessage>
      ) : null}
    </UnifiedModal>
  );
}