| 1 | import type { ReactNode } from "react"; |
| 2 | import { getStates } from "@/lib/i18n/dictionaries"; |
| 3 | import { WhalePose, type WhalePoseName } from "./whale-pose"; |
| 4 | |
| 5 | /** |
| 6 | * Shared surface states — the one empty / loading / error vocabulary every |
| 7 | * data-bearing page renders. Server-safe (no hooks); a caller that needs a |
| 8 | * live retry passes a client `RetryAction` through `action`. |
| 9 | * |
| 10 | * Rules: |
| 11 | * - An empty state is a statement that nothing exists, never a placeholder |
| 12 | * pretending something does. Copy comes from the states dictionary. |
| 13 | * - The whale's pose says what is going on (rest when there is nothing, |
| 14 | * busy while loading, hmm when something failed); the title says it in |
| 15 | * words, so the pose is decorative. |
| 16 | * - A loading state is announced (`role="status"`) and drawn as still |
| 17 | * skeleton lines plus one spinner that only turns when motion is allowed. |
| 18 | * - An error state says what failed and offers exactly one recovery. |
| 19 | */ |
| 20 | |
| 21 | type Tone = "empty" | "loading" | "error"; |
| 22 | type TitleTag = "p" | "h1" | "h2"; |
| 23 | |
| 24 | function Block({ |
| 25 | tone, |
| 26 | title, |
| 27 | body, |
| 28 | action, |
| 29 | compact, |
| 30 | role, |
| 31 | live, |
| 32 | pose, |
| 33 | titleAs: Title = "p", |
| 34 | }: { |
| 35 | tone: Tone; |
| 36 | title: string; |
| 37 | body?: string; |
| 38 | action?: ReactNode; |
| 39 | compact?: boolean; |
| 40 | role?: "status" | "alert"; |
| 41 | live?: "polite" | "assertive"; |
| 42 | pose: WhalePoseName; |
| 43 | /** A route-level plate that is the whole page owns its `<h1>`. */ |
| 44 | titleAs?: TitleTag; |
| 45 | }) { |
| 46 | return ( |
| 47 | <div |
| 48 | className={`state-block state-block-${tone}${compact ? " state-block-compact" : ""}`} |
| 49 | role={role} |
| 50 | aria-live={live} |
| 51 | data-state={tone} |
| 52 | > |
| 53 | <WhalePose pose={pose} /> |
| 54 | <Title className="state-title">{title}</Title> |
| 55 | {body && <p className="state-body">{body}</p>} |
| 56 | {action && <div className="state-actions">{action}</div>} |
| 57 | </div> |
| 58 | ); |
| 59 | } |
| 60 | |
| 61 | export function EmptyState({ |
| 62 | locale, |
| 63 | title, |
| 64 | body, |
| 65 | action, |
| 66 | compact, |
| 67 | titleAs, |
| 68 | pose = "rest", |
| 69 | }: { |
| 70 | locale: string; |
| 71 | title?: string; |
| 72 | body?: string; |
| 73 | action?: ReactNode; |
| 74 | compact?: boolean; |
| 75 | titleAs?: TitleTag; |
| 76 | pose?: WhalePoseName; |
| 77 | }) { |
| 78 | const t = getStates(locale); |
| 79 | return ( |
| 80 | <Block |
| 81 | tone="empty" |
| 82 | title={title ?? t.emptyTitle} |
| 83 | body={body ?? t.emptyBody} |
| 84 | action={action} |
| 85 | compact={compact} |
| 86 | titleAs={titleAs} |
| 87 | pose={pose} |
| 88 | /> |
| 89 | ); |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * The source was not asked or did not answer. Same plate as an error, same |
| 94 | * single retry, but the copy says "not loaded" rather than "broken": on an |
| 95 | * ISR page the next refresh is the honest fix, and nothing is shown in place |
| 96 | * of the missing record. |
| 97 | */ |
| 98 | export function UnavailableState({ |
| 99 | locale, |
| 100 | action, |
| 101 | compact, |
| 102 | }: { |
| 103 | locale: string; |
| 104 | action?: ReactNode; |
| 105 | compact?: boolean; |
| 106 | }) { |
| 107 | const t = getStates(locale); |
| 108 | return ( |
| 109 | <Block |
| 110 | tone="empty" |
| 111 | title={t.unavailableTitle} |
| 112 | body={t.unavailableBody} |
| 113 | action={action} |
| 114 | compact={compact} |
| 115 | role="status" |
| 116 | pose="sleep" |
| 117 | /> |
| 118 | ); |
| 119 | } |
| 120 | |
| 121 | export function LoadingState({ |
| 122 | locale, |
| 123 | label, |
| 124 | lines = 3, |
| 125 | compact, |
| 126 | }: { |
| 127 | locale: string; |
| 128 | label?: string; |
| 129 | lines?: number; |
| 130 | compact?: boolean; |
| 131 | }) { |
| 132 | const t = getStates(locale); |
| 133 | return ( |
| 134 | <div |
| 135 | className={`state-block state-block-loading${compact ? " state-block-compact" : ""}`} |
| 136 | role="status" |
| 137 | aria-live="polite" |
| 138 | aria-busy="true" |
| 139 | data-state="loading" |
| 140 | > |
| 141 | <WhalePose pose="busy" /> |
| 142 | <p className="state-title"> |
| 143 | <span className="spinner" aria-hidden="true" /> {label ?? t.loadingLabel} |
| 144 | </p> |
| 145 | <div className="state-skeleton" aria-hidden="true"> |
| 146 | {Array.from({ length: lines }, (_, i) => ( |
| 147 | <span key={i} style={{ width: `${88 - i * 14}%` }} /> |
| 148 | ))} |
| 149 | </div> |
| 150 | </div> |
| 151 | ); |
| 152 | } |
| 153 | |
| 154 | export function ErrorState({ |
| 155 | locale, |
| 156 | title, |
| 157 | body, |
| 158 | action, |
| 159 | compact, |
| 160 | titleAs, |
| 161 | }: { |
| 162 | locale: string; |
| 163 | title?: string; |
| 164 | body?: string; |
| 165 | action?: ReactNode; |
| 166 | compact?: boolean; |
| 167 | titleAs?: TitleTag; |
| 168 | }) { |
| 169 | const t = getStates(locale); |
| 170 | return ( |
| 171 | <Block |
| 172 | tone="error" |
| 173 | title={title ?? t.errorTitle} |
| 174 | body={body ?? t.errorBody} |
| 175 | action={action} |
| 176 | compact={compact} |
| 177 | role="alert" |
| 178 | titleAs={titleAs} |
| 179 | pose="hmm" |
| 180 | /> |
| 181 | ); |
| 182 | } |
| 183 |