const STORAGE_KEY_PREFIX = "ls:visited-projects";
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const MAX_PROJECTS = 10;
|
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function getStorageKey(userId: number): string {
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return `${STORAGE_KEY_PREFIX}:${userId}`;
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}
|
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/**
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* Get the list of recently visited project IDs from localStorage for a specific user.
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* Returns an array of project IDs sorted by most recently visited first.
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*/
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export function getVisitedProjectIds(userId?: number): number[] {
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if (!userId) return [];
|
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try {
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const stored = localStorage.getItem(getStorageKey(userId));
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if (!stored) return [];
|
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const parsed = JSON.parse(stored);
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if (!Array.isArray(parsed)) return [];
|
|
return parsed.filter((id): id is number => typeof id === "number");
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} catch {
|
return [];
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}
|
}
|
|
/**
|
* Add a project ID to the visited projects list for a specific user.
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* If the project already exists, it moves to the front.
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* The list is capped at MAX_PROJECTS (10).
|
*/
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export function addVisitedProject(projectId: number, userId?: number): void {
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if (!userId) return;
|
|
try {
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const current = getVisitedProjectIds(userId);
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const filtered = current.filter((id) => id !== projectId);
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const updated = [projectId, ...filtered].slice(0, MAX_PROJECTS);
|
|
localStorage.setItem(getStorageKey(userId), JSON.stringify(updated));
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} catch {
|
// Silently fail if localStorage is unavailable
|
}
|
}
|
