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import type { DebounceFilterOptions, MaybeRefOrGetter } from '@vueuse/core'
type FunctionArgs = (...args: any[]) => any
// Default function to generate a cache key
function defaultGetCacheKey(): string {
return 'default'
}
/**
* Creates a cached debounced version of the given function.
*
* @param fn - The function to debounce.
* @param ms - The debounce delay in milliseconds. Default is 500ms.
* @param getCacheKey - Function to generate a unique cache key based on the arguments.
* @param options - Additional options for debouncing.
*
* @returns A debounced version of the input function with caching.
*/
export function useCachedDebouncedFunction<T extends FunctionArgs>(
fn: T,
ms: MaybeRefOrGetter<number> = 500,
getCacheKey: (...args: Parameters<T>) => string | number = defaultGetCacheKey,
options: DebounceFilterOptions = {},
): (...args: Parameters<T>) => ReturnType<T> {
// Cache to store debounced functions based on a unique key
const debounceCache = new Map<string | number, any>()
return (...args: Parameters<T>): ReturnType<T> => {
// Generate a unique key for the given arguments
const key = getCacheKey(...args)
// If the debounced function for the given key is not in the cache, create and cache it
if (!debounceCache.has(key)) {
const debouncedFn = useDebounceFn(fn, ms, options)
debounceCache.set(key, debouncedFn)
}
// Retrieve the cached debounced function
const debouncedFn = debounceCache.get(key)
// Call and return the result of the debounced function
return debouncedFn!(...args)
}
}