| 1 | import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
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| 2 |
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| 3 | import { apiClient, Trigger, CreateTriggerPayload } from "@/lib/api";
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| 4 |
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| 5 | export const triggerKeys = {
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| 6 | all: () => ["triggers"] as const,
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| 7 | lists: () => [...triggerKeys.all(), "list"] as const,
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| 8 | list: (filters?: TriggerFilters) =>
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| 9 | [...triggerKeys.lists(), filters] as const,
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| 10 | detail: (id: string) => [...triggerKeys.all(), "detail", id] as const,
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| 11 | };
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| 12 |
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| 13 | interface TriggerFilters {
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| 14 | from?: string; // ISO date
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| 15 | to?: string; // ISO date
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| 16 | limit?: number;
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| 17 | }
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| 18 |
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| 19 | // Queries
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| 20 |
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| 21 | // Fetch a paginated list of mood entries.
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| 22 | // On cold start, returns cached data instantly then revalidates.
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| 23 | export const useTriggers = (filters?: TriggerFilters) => {
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| 24 | return useQuery({
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| 25 | queryKey: triggerKeys.list(filters),
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| 26 | queryFn: () => apiClient.getTriggers(filters),
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| 27 | });
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| 28 | };
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| 29 |
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| 30 | // Single entry detail
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| 31 | export const useTrigger = (id: string) => {
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| 32 | return useQuery({
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| 33 | queryKey: triggerKeys.detail(id),
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| 34 | queryFn: () => apiClient.getTrigger(id),
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| 35 | enabled: !!id,
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| 36 | });
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| 37 | };
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| 38 |
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| 39 | // MUTATIONS
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| 40 |
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| 41 | // Create a new mood entry
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| 42 | // Optimistically adds to cache, rolls back on failure
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| 43 | export const useCreateTrigger = () => {
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| 44 | const queryClient = useQueryClient();
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| 45 |
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| 46 | return useMutation({
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| 47 | mutationFn: (payload: CreateTriggerPayload) =>
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| 48 | apiClient.createTrigger(payload),
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| 49 |
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| 50 | // Optimistic update so that the UI reflects the new entry immediately
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| 51 | onMutate: async (payload) => {
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| 52 | // Cancel any in-flight refetches so they don't overwrite our optimistic update
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| 53 | await queryClient.cancelQueries({ queryKey: triggerKeys.lists() });
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| 54 |
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| 55 | // Snapshot current cache so we can roll back
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| 56 | const previous = queryClient.getQueryData(triggerKeys.list());
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| 57 |
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| 58 | // Inject a temporary optimistic record
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| 59 | // TODO: might as well create a shared attrs that we're keeping it
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| 60 | queryClient.setQueryData(triggerKeys.list(), (old: Trigger[] = []) => [
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| 61 | {
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| 62 | ...payload,
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| 63 | id: `temp-${Date.now()}`,
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| 64 | createdAt: new Date().toISOString(),
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| 65 | _optimistic: true,
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| 66 | },
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| 67 | ...old,
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| 68 | ]);
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| 69 |
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| 70 | return { previous };
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| 71 | },
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| 72 |
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| 73 | // On error, roll back to the snapshot
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| 74 | onError: (_err, _payload, context) => {
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| 75 | if (context?.previous) {
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| 76 | queryClient.setQueryData(triggerKeys.list(), context.previous);
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| 77 | }
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| 78 | },
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| 79 |
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| 80 | // On success, replace optimistic record with real one from server
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| 81 | onSuccess: () => {
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| 82 | queryClient.invalidateQueries({ queryKey: triggerKeys.lists() });
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| 83 | },
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| 84 | });
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| 85 | };
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| 86 |
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| 87 | // Delete a mood entry with optimistic removal
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| 88 | export const useDeleteTrigger = () => {
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| 89 | const queryClient = useQueryClient();
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| 90 |
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| 91 | return useMutation({
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| 92 | mutationFn: (id: string) => apiClient.deleteTrigger(id),
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| 93 |
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| 94 | onMutate: async (id) => {
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| 95 | await queryClient.cancelQueries({ queryKey: triggerKeys.lists() });
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| 96 | const previous = queryClient.getQueryData(triggerKeys.list());
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| 97 |
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| 98 | queryClient.setQueryData(triggerKeys.list(), (old: Trigger[] = []) =>
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| 99 | old.filter((e) => e.id !== Number(id)),
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| 100 | );
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| 101 |
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| 102 | return { previous };
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| 103 | },
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| 104 |
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| 105 | onError: (_err, _id, context) => {
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| 106 | if (context?.previous) {
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| 107 | queryClient.setQueryData(triggerKeys.list(), context.previous);
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| 108 | }
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| 109 | },
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| 110 |
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| 111 | onSuccess: () => {
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| 112 | queryClient.invalidateQueries({ queryKey: triggerKeys.lists() });
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| 113 | },
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| 114 | });
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| 115 | };
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