| 1 | import type { ReactNode } from "react"; |
| 2 | import { getStates } from "@/lib/i18n/dictionaries"; |
| 3 | |
| 4 | /** |
| 5 | * Shared surface states — the one empty / loading / error vocabulary every |
| 6 | * data-bearing page renders. Server-safe (no hooks); a caller that needs a |
| 7 | * live retry passes a client `RetryAction` through `action`. |
| 8 | * |
| 9 | * Rules: |
| 10 | * - An empty state is a statement that nothing exists, never a placeholder |
| 11 | * pretending something does. Copy comes from the states dictionary. |
| 12 | * - A loading state is announced (`role="status"`) and drawn as neutral |
| 13 | * skeleton lines whose shimmer is gated on `prefers-reduced-motion`. |
| 14 | * - An error state says what failed and offers exactly one recovery. |
| 15 | */ |
| 16 | |
| 17 | type Tone = "empty" | "loading" | "error"; |
| 18 | type TitleTag = "p" | "h1" | "h2"; |
| 19 | |
| 20 | function Block({ |
| 21 | tone, |
| 22 | title, |
| 23 | body, |
| 24 | action, |
| 25 | compact, |
| 26 | role, |
| 27 | live, |
| 28 | titleAs: Title = "p", |
| 29 | }: { |
| 30 | tone: Tone; |
| 31 | title: string; |
| 32 | body?: string; |
| 33 | action?: ReactNode; |
| 34 | compact?: boolean; |
| 35 | role?: "status" | "alert"; |
| 36 | live?: "polite" | "assertive"; |
| 37 | /** A route-level plate that is the whole page owns its `<h1>`. */ |
| 38 | titleAs?: TitleTag; |
| 39 | }) { |
| 40 | return ( |
| 41 | <div |
| 42 | className={`state-block state-block-${tone}${compact ? " state-block-compact" : ""}`} |
| 43 | role={role} |
| 44 | aria-live={live} |
| 45 | data-state={tone} |
| 46 | > |
| 47 | <span className="state-mark" aria-hidden="true" /> |
| 48 | <div className="state-copy"> |
| 49 | <Title className="state-title">{title}</Title> |
| 50 | {body && <p className="state-body">{body}</p>} |
| 51 | {action && <div className="state-actions">{action}</div>} |
| 52 | </div> |
| 53 | </div> |
| 54 | ); |
| 55 | } |
| 56 | |
| 57 | export function EmptyState({ |
| 58 | locale, |
| 59 | title, |
| 60 | body, |
| 61 | action, |
| 62 | compact, |
| 63 | titleAs, |
| 64 | }: { |
| 65 | locale: string; |
| 66 | title?: string; |
| 67 | body?: string; |
| 68 | action?: ReactNode; |
| 69 | compact?: boolean; |
| 70 | titleAs?: TitleTag; |
| 71 | }) { |
| 72 | const t = getStates(locale); |
| 73 | return ( |
| 74 | <Block |
| 75 | tone="empty" |
| 76 | title={title ?? t.emptyTitle} |
| 77 | body={body ?? t.emptyBody} |
| 78 | action={action} |
| 79 | compact={compact} |
| 80 | titleAs={titleAs} |
| 81 | /> |
| 82 | ); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * The source was not asked or did not answer. Same plate as an error, same |
| 87 | * single retry, but the copy says "not loaded" rather than "broken": on an |
| 88 | * ISR page the next refresh is the honest fix, and nothing is shown in place |
| 89 | * of the missing record. |
| 90 | */ |
| 91 | export function UnavailableState({ |
| 92 | locale, |
| 93 | action, |
| 94 | compact, |
| 95 | }: { |
| 96 | locale: string; |
| 97 | action?: ReactNode; |
| 98 | compact?: boolean; |
| 99 | }) { |
| 100 | const t = getStates(locale); |
| 101 | return ( |
| 102 | <Block |
| 103 | tone="error" |
| 104 | title={t.unavailableTitle} |
| 105 | body={t.unavailableBody} |
| 106 | action={action} |
| 107 | compact={compact} |
| 108 | role="status" |
| 109 | /> |
| 110 | ); |
| 111 | } |
| 112 | |
| 113 | export function LoadingState({ |
| 114 | locale, |
| 115 | label, |
| 116 | lines = 3, |
| 117 | compact, |
| 118 | }: { |
| 119 | locale: string; |
| 120 | label?: string; |
| 121 | lines?: number; |
| 122 | compact?: boolean; |
| 123 | }) { |
| 124 | const t = getStates(locale); |
| 125 | return ( |
| 126 | <div |
| 127 | className={`state-block state-block-loading${compact ? " state-block-compact" : ""}`} |
| 128 | role="status" |
| 129 | aria-live="polite" |
| 130 | aria-busy="true" |
| 131 | data-state="loading" |
| 132 | > |
| 133 | <span className="state-mark" aria-hidden="true" /> |
| 134 | <div className="state-copy"> |
| 135 | <p className="state-title">{label ?? t.loadingLabel}</p> |
| 136 | <div className="state-skeleton" aria-hidden="true"> |
| 137 | {Array.from({ length: lines }, (_, i) => ( |
| 138 | <span key={i} style={{ width: `${88 - i * 14}%` }} /> |
| 139 | ))} |
| 140 | </div> |
| 141 | </div> |
| 142 | </div> |
| 143 | ); |
| 144 | } |
| 145 | |
| 146 | export function ErrorState({ |
| 147 | locale, |
| 148 | title, |
| 149 | body, |
| 150 | action, |
| 151 | compact, |
| 152 | titleAs, |
| 153 | }: { |
| 154 | locale: string; |
| 155 | title?: string; |
| 156 | body?: string; |
| 157 | action?: ReactNode; |
| 158 | compact?: boolean; |
| 159 | titleAs?: TitleTag; |
| 160 | }) { |
| 161 | const t = getStates(locale); |
| 162 | return ( |
| 163 | <Block |
| 164 | tone="error" |
| 165 | title={title ?? t.errorTitle} |
| 166 | body={body ?? t.errorBody} |
| 167 | action={action} |
| 168 | compact={compact} |
| 169 | role="alert" |
| 170 | titleAs={titleAs} |
| 171 | /> |
| 172 | ); |
| 173 | } |
| 174 |