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26 lines
1.1 KiB
TypeScript
26 lines
1.1 KiB
TypeScript
/**
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* Read-time migration for CustomTheme records (docs/architecture/02 §4).
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*
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* Mirrors snippet/dataset migrations: every theme read from storage passes
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* through `migrateCustomTheme`, which fills missing/invalid fields and stamps
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* the current version. Unknown fields are tolerated (spread the original, only
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* fill gaps) so a record written by a newer build round-trips without loss.
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*/
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import { CURRENT_THEME_VERSION, type CustomTheme } from '@core/custom-theme';
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import { isJsonObject } from '@core/spec-config';
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/** Upgrade a raw stored record to the current CustomTheme shape. */
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export function migrateCustomTheme(raw: unknown): CustomTheme {
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const r = { ...(raw as Record<string, unknown>) };
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return {
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...r,
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id: typeof r.id === 'number' ? r.id : Number(r.id),
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version: CURRENT_THEME_VERSION,
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name: typeof r.name === 'string' ? r.name : 'Untitled theme',
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config: isJsonObject(r.config) ? r.config : {},
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created: typeof r.created === 'string' ? r.created : new Date(0).toISOString(),
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modified: typeof r.modified === 'string' ? r.modified : new Date(0).toISOString(),
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};
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}
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