new monitor list controller hook

client/src/Hooks/useMonitorListController.ts

@@ -0,0 +1,207 @@
+import { setRowsPerPage, type TableName } from "@/Features/UI/uiSlice";
+import { useDelete, useGet } from "@/Hooks/UseApi";
+import { useBulkMonitorActions } from "@/Hooks/useBulkMonitorActions";
+import useDebounce from "@/Hooks/useDebounce";
+import type { RootState } from "@/store";
+import {
+	type MonitorsWithChecksResponse,
+	SelectableMonitorTypes,
+	type Monitor,
+	type MonitorType,
+} from "@/Types/Monitor";
+import type { Tag } from "@/Types/Tag";
+import { useCallback, useMemo, useState } from "react";
+import { useDispatch, useSelector } from "react-redux";
+
+interface MonitorListConfig {
+	types: MonitorType[] | "selectable";
+	checksLimit: number;
+	refreshInterval: number;
+	rowsPerPageTable: TableName;
+	rowsPerPageDefault: number;
+	initialSortField?: string; // default ""
+}
+
+export const useMonitorListController = (config: MonitorListConfig) => {
+	const dispatch = useDispatch();
+	const rowsPerPage = useSelector(
+		(state: RootState) =>
+			state.ui?.[config.rowsPerPageTable]?.rowsPerPage ?? config.rowsPerPageDefault
+	);
+
+	// Filter states
+	const [selectedTypes, setSelectedTypes] = useState<MonitorType[]>([]);
+	const [selectedStatus, setSelectedStatus] = useState<string>("");
+	const [selectedState, setSelectedState] = useState<string>("");
+	const [selectedTags, setSelectedTags] = useState<string[]>([]);
+	const [page, setPage] = useState<number>(0);
+	const [search, setSearch] = useState<string>("");
+	const [sortField, setSortField] = useState<string>(config.initialSortField ?? "");
+	const [sortOrder, setSortOrder] = useState<"asc" | "desc">("asc");
+	const [selectedMonitor, setSelectedMonitor] = useState<Monitor | null>(null);
+	const debouncedSearch = useDebounce<string>(search, 300);
+
+	// Convert filter selections to API filter values
+	// Status: pass "up"/"down" directly to the API
+	// State: "active" -> true, "paused" -> false
+	const toFilterStatus = useMemo(() => {
+		if (selectedStatus === "up") return "up";
+		if (selectedStatus === "down") return "down";
+		return undefined;
+	}, [selectedStatus]);
+
+	const toFilterActive = useMemo(() => {
+		if (selectedState === "active") return "true";
+		if (selectedState === "paused") return "false";
+		return undefined;
+	}, [selectedState]);
+
+	// Determine field and filter for the API request
+	// Priority: status > isActive > search > sort
+	const filterLookup = new Map<string | undefined, string>([
+		[toFilterStatus, "status"],
+		[toFilterActive, "isActive"],
+	]);
+	const activeFilter = [...filterLookup].find(([key]) => key !== undefined);
+	const field = activeFilter?.[1] || (debouncedSearch ? "name" : sortField || undefined);
+	const filter = activeFilter?.[0] || debouncedSearch || undefined;
+
+	const effectiveTypes = useMemo(() => {
+		return config.types === "selectable"
+			? selectedTypes.length > 0
+				? selectedTypes
+				: [...SelectableMonitorTypes]
+			: config.types;
+	}, [config.types, selectedTypes]);
+
+	// Fetching
+	const monitorsWithChecksUrl = useMemo(() => {
+		const params = new URLSearchParams();
+		effectiveTypes.forEach((type) => params.append("type", type));
+		selectedTags.forEach((tag) => params.append("tags", tag));
+		params.append("limit", String(config.checksLimit));
+		if (page !== undefined) params.append("page", String(page));
+		if (rowsPerPage) params.append("rowsPerPage", String(rowsPerPage));
+		if (filter) params.append("filter", filter);
+		if (field) params.append("field", field);
+		if (sortOrder) params.append("order", sortOrder);
+		return `/monitors/team/with-checks?${params.toString()}`;
+	}, [
+		effectiveTypes,
+		selectedTags,
+		page,
+		rowsPerPage,
+		filter,
+		field,
+		sortOrder,
+		config.checksLimit,
+	]);
+
+	const {
+		data: monitorsWithChecksData,
+		isLoading,
+		error,
+		refetch,
+	} = useGet<MonitorsWithChecksResponse>(
+		monitorsWithChecksUrl,
+		{},
+		{ refreshInterval: config.refreshInterval, keepPreviousData: true }
+	);
+	const { data: tags } = useGet<Tag[]>("/tags/team");
+
+	const bulk = useBulkMonitorActions(refetch, page);
+
+	// Delete ops
+	const { deleteFn, loading: isDeleting } = useDelete();
+	const handleConfirmDelete = async () => {
+		if (!selectedMonitor) return;
+		await deleteFn(`/monitors/${selectedMonitor.id}`);
+		setSelectedMonitor(null);
+		refetch();
+	};
+	const handleCancelDelete = () => setSelectedMonitor(null);
+
+	// Handle filters
+	const handleClearFilters = useCallback(() => {
+		setSelectedTypes([]);
+		setSelectedStatus("");
+		setSelectedState("");
+		setSelectedTags([]);
+		setSearch("");
+	}, []);
+
+	const handleSetRowsPerPage = (value: number) => {
+		dispatch(setRowsPerPage({ value, table: config.rowsPerPageTable }));
+		setPage(0);
+	};
+
+	// Check for active filters
+	const hasActiveFilters = Boolean(
+		selectedTypes.length > 0 ||
+		selectedStatus ||
+		selectedState ||
+		selectedTags.length > 0 ||
+		search
+	);
+
+	// Show empty state only when there are truly no monitors (not just filtered out)
+	// If filters are active and count is 0, pass 1 to prevent empty state fallback
+
+	const { monitors, summary, count } = monitorsWithChecksData ?? {
+		monitors: null,
+		summary: null,
+		count: 0,
+	};
+
+	const effectiveTotalCount =
+		hasActiveFilters && (summary?.totalMonitors ?? 0) === 0
+			? 1
+			: (summary?.totalMonitors ?? 0);
+
+	return {
+		// Data
+		monitors,
+		summary,
+		count,
+		tags,
+		isLoading,
+		error,
+		refetch,
+		effectiveTotalCount,
+		hasActiveFilters,
+
+		// Filter state and setters
+		selectedTypes,
+		setSelectedTypes,
+		selectedStatus,
+		setSelectedStatus,
+		selectedState,
+		setSelectedState,
+		selectedTags,
+		setSelectedTags,
+		search,
+		setSearch,
+		handleClearFilters,
+
+		// Paging and Sorting
+		page,
+		setPage,
+		rowsPerPage,
+		handleSetRowsPerPage,
+		sortField,
+		setSortField,
+		sortOrder,
+		setSortOrder,
+
+		// Delete
+		selectedMonitor,
+		setSelectedMonitor,
+		isDialogOpen: Boolean(selectedMonitor),
+		isDeleting,
+		handleConfirmDelete,
+		handleCancelDelete,
+
+		// Rendered only when config.bulkActions
+		...bulk,
+	};
+};