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import { Link } from 'react-router-dom'
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import { Icon } from '../components/Icon'
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import type { IconName } from '../components/Icon'
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import { Badge } from '../components/ui'
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import type { CourseLevel, LessonType, PublicCourseCard } from '../api/types'
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/**
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* Drobne czesci wspolne dla stron Akademii.
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*
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* Kafelek kursu pokazuje sie na stronie glownej, na liscie kursow i w cenniku,
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* a pasek postepu na pulpicie i w odtwarzaczu. Trzy kopie tego samego kafelka
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* rozjechalyby sie przy pierwszej poprawce.
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*/
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export const LEVEL_LABEL: Record<CourseLevel, string> = {
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BASIC: 'Podstawowy',
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INTERMEDIATE: 'Średniozaawansowany',
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ADVANCED: 'Zaawansowany',
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}
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export const LESSON_TYPE_LABEL: Record<LessonType, string> = {
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VIDEO: 'Nagranie',
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TEXT: 'Materiał do czytania',
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FILE: 'Plik do pobrania',
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WEBINAR: 'Webinar',
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QUIZ: 'Sprawdzian',
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}
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export const LESSON_TYPE_ICON: Record<LessonType, IconName> = {
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VIDEO: 'play',
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TEXT: 'file-text',
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FILE: 'download',
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WEBINAR: 'presentation',
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QUIZ: 'list-checks',
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}
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/**
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* Cena brutto albo oznaczenie kursu darmowego.
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*
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* Brak ceny znaczy "darmowy", a nie "cena zero": to dwie rozne decyzje,
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* rozstrzygniete po stronie backendu przez `Course.isFree()`.
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*/
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export function formatPrice(price: string | number | null, currency: string) {
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if (price === null || price === undefined) {
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return 'Bezpłatny'
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}
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const value = typeof price === 'string' ? Number(price) : price
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if (!Number.isFinite(value)) {
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return 'Bezpłatny'
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}
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return new Intl.NumberFormat('pl-PL', {
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style: 'currency',
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currency: currency || 'PLN',
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minimumFractionDigits: 2,
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}).format(value)
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}
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/** Czas trwania w formie, w ktorej mysli czlowiek: godziny i minuty. */
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export function formatCourseDuration(minutes: number | null) {
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if (!minutes || minutes <= 0) {
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return null
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}
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const hours = Math.floor(minutes / 60)
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const rest = minutes % 60
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if (hours === 0) {
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return `${rest} min`
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}
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return rest === 0 ? `${hours} godz.` : `${hours} godz. ${rest} min`
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}
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/** Adres okladki. Pusty identyfikator oznacza kafelek bez obrazka. */
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export function mediaUrl(mediaId: number | null) {
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return mediaId ? `/api/public/media/${mediaId}` : null
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}
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export function CourseCover({
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mediaId,
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title,
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className = '',
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}: {
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mediaId: number | null
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title: string
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className?: string
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}) {
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const url = mediaUrl(mediaId)
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if (!url) {
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return (
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<div
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className={`flex items-center justify-center bg-gradient-hydro ${className}`}
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aria-hidden="true"
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>
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<Icon name="graduation-cap" size={32} className="text-white/70" />
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</div>
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)
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}
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return (
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<img
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src={url}
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alt={`Okładka kursu ${title}`}
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loading="lazy"
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className={`object-cover ${className}`}
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/>
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)
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}
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/** Kafelek kursu na liscie. */
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export function CourseCard({ course }: { course: PublicCourseCard }) {
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const duration = formatCourseDuration(course.durationMinutes)
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return (
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<Link
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to={`/kurs/${course.slug}`}
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className="group flex flex-col overflow-hidden rounded-lg border border-slate-100 bg-white shadow-sm transition-shadow duration-fast ease-standard hover:shadow-md focus-visible:outline-none focus-visible:ring-3 focus-visible:ring-blue-500/45"
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>
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<CourseCover mediaId={course.coverMediaId} title={course.title} className="h-40 w-full" />
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<div className="flex flex-1 flex-col p-4">
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<div className="flex flex-wrap items-center gap-1.5">
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{course.category && <Badge tone="info">{course.category}</Badge>}
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{course.free ? (
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<Badge tone="ok">Bezpłatny</Badge>
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) : (
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<Badge tone="brand">{formatPrice(course.priceGross, course.currency)}</Badge>
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)}
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</div>
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<h3 className="mt-2.5 text-base font-semibold leading-snug text-slate-900 group-hover:text-blue-600">
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{course.title}
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</h3>
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{course.subtitle && (
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<p className="mt-1 line-clamp-2 text-sm leading-relaxed text-slate-600">
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{course.subtitle}
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</p>
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)}
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<div className="mt-auto flex flex-wrap items-center gap-x-4 gap-y-1.5 pt-3 text-xs text-slate-500">
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<span className="flex items-center gap-1.5">
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<Icon name="book-open" size={14} />
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<span className="hx-data">{course.lessonCount}</span>
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{lessonWord(course.lessonCount)}
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</span>
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{duration && (
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<span className="flex items-center gap-1.5">
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<Icon name="clock" size={14} />
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<span className="hx-data">{duration}</span>
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</span>
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)}
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{course.level && <span>{LEVEL_LABEL[course.level]}</span>}
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{course.certificateEnabled && (
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<span className="flex items-center gap-1.5 text-blue-600">
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<Icon name="award" size={14} />
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Certyfikat
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</span>
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)}
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</div>
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</div>
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</Link>
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)
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}
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/** Odmiana slowa "lekcja" przez liczbe: 1 lekcja, 2 lekcje, 5 lekcji. */
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export function lessonWord(count: number) {
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if (count === 1) return 'lekcja'
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const rest10 = count % 10
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const rest100 = count % 100
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if (rest10 >= 2 && rest10 <= 4 && (rest100 < 12 || rest100 > 14)) return 'lekcje'
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return 'lekcji'
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}
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/** Pasek postepu kursu. Liczba pochodzi z backendu, z lekcji wymaganych. */
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export function ProgressBar({
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percent,
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label,
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className = '',
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}: {
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percent: number
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label?: string
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className?: string
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}) {
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const safe = Math.max(0, Math.min(100, percent))
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return (
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<div className={className}>
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{label && (
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<div className="mb-1.5 flex items-center justify-between text-xs text-slate-600">
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<span>{label}</span>
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<span className="hx-data font-medium text-slate-900">{safe}%</span>
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</div>
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)}
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<div
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className="h-2 overflow-hidden rounded-full bg-slate-100"
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role="progressbar"
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aria-valuenow={safe}
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aria-valuemin={0}
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aria-valuemax={100}
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aria-label={label || 'Postęp kursu'}
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>
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<div
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className="h-full rounded-full bg-blue-500 transition-[width] duration-base ease-standard"
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style={{ width: `${safe}%` }}
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/>
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</div>
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</div>
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)
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}
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