import type { ReactNode } from 'react'
import { Loader2 } from 'lucide-react'

import type { PlayProfileInput } from '../api/play_profiles'
import type { Library, PlayProfile } from '../types'

type ProfileFormUpdate = (patch: Partial<PlayProfileInput>) => void

export function ProfileIdentityFields({
  form,
  editing,
  update,
}: {
  form: PlayProfileInput
  editing: PlayProfile | null
  update: ProfileFormUpdate
}) {
  return (
    <>
      <Field label="名称">
        <input
          required
          className="input-base"
          maxLength={50}
          placeholder="如:儿童模式、影院模式"
          value={form.name}
          onChange={(event) => update({ name: event.target.value })}
        />
      </Field>

      <Toggle
        label="设为默认 Profile"
        hint="登录后默认使用"
        checked={form.is_default}
        onChange={(value) => update({ is_default: value })}
      />

      <Field label="内容分级限制">
        <select
          className="input-base"
          value={form.content_rating_limit ?? ''}
          onChange={(event) => update({ content_rating_limit: event.target.value })}
        >
          <option value="">不限制</option>
          <option value="G">G</option>
          <option value="PG">PG</option>
          <option value="PG-13">PG-13</option>
          <option value="R">R</option>
          <option value="NC-17">NC-17</option>
        </select>
      </Field>

      <Toggle
        label="允许成人内容"
        hint="开启后可访问 NSFW 媒体"
        checked={form.allow_adult}
        onChange={(value) => update({ allow_adult: value })}
      />

      <Toggle
        label="切换时需要 PIN"
        hint="切换到此 Profile 需输入 PIN 码"
        checked={form.require_pin}
        onChange={(value) => update({ require_pin: value })}
      />
      {form.require_pin && (
        <Field label="PIN 码 (4-8 位)">
          <input
            type="password"
            className="input-base"
            maxLength={8}
            placeholder={editing ? '留空保持不变' : '设置 PIN'}
            value={form.pin ?? ''}
            onChange={(event) => update({ pin: event.target.value })}
          />
        </Field>
      )}
    </>
  )
}

export function ProfilePreferenceFields({
  form,
  update,
}: {
  form: PlayProfileInput
  update: ProfileFormUpdate
}) {
  return (
    <>
      <div className="grid grid-cols-1 gap-3 sm:grid-cols-2">
        <Field label="首选字幕">
          <select
            className="input-base"
            value={form.preferred_subtitle_lang ?? ''}
            onChange={(event) => update({ preferred_subtitle_lang: event.target.value })}
          >
            <option value="">跟随系统</option>
            <option value="zh">中文</option>
            <option value="zh-CN">简体中文</option>
            <option value="en">English</option>
            <option value="ja">日语</option>
          </select>
        </Field>
        <Field label="首选音轨">
          <select
            className="input-base"
            value={form.preferred_audio_lang ?? ''}
            onChange={(event) => update({ preferred_audio_lang: event.target.value })}
          >
            <option value="">跟随系统</option>
            <option value="zh">中文</option>
            <option value="ja">日语</option>
            <option value="en">English</option>
          </select>
        </Field>
      </div>

      <Toggle
        label="自动播放下一集"
        checked={form.autoplay_next}
        onChange={(value) => update({ autoplay_next: value })}
      />
      <Toggle
        label="自动跳过片头"
        checked={form.skip_intro}
        onChange={(value) => update({ skip_intro: value })}
      />
    </>
  )
}

export function ProfileLibraryAccessField({
  form,
  libraries,
  onToggleLibrary,
}: {
  form: PlayProfileInput
  libraries: Library[]
  onToggleLibrary: (id: string) => void
}) {
  return (
    <Field label="允许访问的媒体库 (空 = 全部)">
      <div className="flex flex-wrap gap-2">
        {libraries.map((library) => (
          <button
            key={library.id}
            type="button"
            onClick={() => onToggleLibrary(library.id)}
            className={
              'rounded-full border px-3 py-1 text-xs ' +
              (form.allowed_library_ids.includes(library.id)
                ? 'border-primary-400/60 bg-primary-400/10 text-brand-500'
                : 'border-gray-200 text-ink-50 hover:text-white')
            }
          >
            {library.name}
            {library.is_remote_emby ? ' · Emby' : ''}
          </button>
        ))}
        {libraries.length === 0 && (
          <span className="text-xs text-sand-500">暂无媒体库</span>
        )}
      </div>
    </Field>
  )
}

export function ProfileFormActions({
  saving,
  onClose,
}: {
  saving: boolean
  onClose: () => void
}) {
  return (
    <div className="flex justify-end gap-2 pt-2">
      <button
        type="button"
        onClick={onClose}
        className="rounded-lg border border-gray-200 px-4 py-2 text-sm text-ink-100 hover:bg-gray-50"
      >
        取消
      </button>
      <button type="submit" disabled={saving} className="neon-button">
        {saving && <Loader2 size={16} className="animate-spin" />}
        保存
      </button>
    </div>
  )
}

function Field({ label, children }: { label: string; children: ReactNode }) {
  return (
    <label className="block">
      <span className="mb-1 block text-sm text-ink-100">{label}</span>
      {children}
    </label>
  )
}

function Toggle({
  label,
  hint,
  checked,
  onChange,
}: {
  label: string
  hint?: string
  checked: boolean
  onChange: (value: boolean) => void
}) {
  return (
    <label className="flex cursor-pointer items-center justify-between gap-3 rounded-xl border border-gray-200 bg-gray-50 px-3 py-2">
      <div>
        <div className="text-sm text-ink-600">{label}</div>
        {hint && <div className="text-xs text-ink-50">{hint}</div>}
      </div>
      <input
        type="checkbox"
        checked={checked}
        onChange={(event) => onChange(event.target.checked)}
        className="h-4 w-4 accent-primary-400"
      />
    </label>
  )
}