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import { isArray, uniqBy } from "lodash";
import { useCallback, useContext, useMemo } from "react";
import { useSystemSettings } from "../../@redux/hooks";
import { log } from "../../utilities/logger";
import { StagedChangesContext } from "./provider";
export function useStagedValues(): LooseObject {
const [values] = useContext(StagedChangesContext);
return values;
}
export function useSingleUpdate() {
const [, update] = useContext(StagedChangesContext);
return useCallback(
(v: any, key: string) => {
update((staged) => {
const changes = { ...staged };
changes[key] = v;
log("info", "stage settings", changes);
return changes;
});
},
[update]
);
}
export function useMultiUpdate() {
const [, update] = useContext(StagedChangesContext);
return useCallback(
(obj: LooseObject) => {
update((staged) => {
const changes = { ...staged, ...obj };
log("info", "stage settings", changes);
return changes;
});
},
[update]
);
}
type ValidateFuncType<T> = (v: any) => v is T;
export type OverrideFuncType<T> = (settings: Settings) => T;
export function useExtract<T>(
key: string,
validate: ValidateFuncType<T>,
override?: OverrideFuncType<T>
): Readonly<Nullable<T>> {
const settings = useSystemSettings().content!;
const extractValue = useMemo(() => {
let value: Nullable<T> = null;
if (settings === undefined) {
return value;
}
let path = key.split("-");
if (path[0] !== "settings") {
return null;
} else {
path = path.slice(0);
}
let item: LooseObject = settings;
for (const key of path) {
if (key in item) {
item = item[key];
}
if (validate(item)) {
value = item;
break;
}
}
return value;
}, [key, settings, validate]);
if (override && settings !== undefined) {
// TODO: Temporarily override
return override(settings);
} else {
return extractValue;
}
}
export function useLatest<T>(
key: string,
validate: ValidateFuncType<T>,
override?: OverrideFuncType<T>
): Readonly<Nullable<T>> {
const extractValue = useExtract<T>(key, validate, override);
const stagedValue = useStagedValues();
if (key in stagedValue) {
return stagedValue[key] as T;
} else {
return extractValue;
}
}
export function useLatestArray<T>(
key: string,
compare: keyof T,
override?: OverrideFuncType<T[]>
): Readonly<Nullable<T[]>> {
const extractValue = useExtract<T[]>(key, isArray, override);
const stagedValue = useStagedValues();
let staged: T[] | undefined = undefined;
if (key in stagedValue) {
staged = stagedValue[key];
}
return useMemo(() => {
if (staged !== undefined && extractValue) {
return uniqBy([...staged, ...extractValue], compare);
} else {
return extractValue;
}
}, [extractValue, staged, compare]);
}
export function useUpdateArray<T>(key: string, compare: keyof T) {
const update = useSingleUpdate();
const stagedValue = useStagedValues();
const staged: T[] = useMemo(() => {
if (key in stagedValue) {
return stagedValue[key];
} else {
return [];
}
}, [key, stagedValue]);
return useCallback(
(v: T) => {
const newArray = uniqBy([v, ...staged], compare);
update(newArray, key);
},
[compare, staged, key, update]
);
}
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