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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
"use strict";
const initialReducerState = {
// Array of targetFront
targets: [],
// The selected targetFront instance
selected: null,
// timestamp of the last time a target was updated (i.e. url/title was updated).
// This is used by the EvaluationContextSelector component to re-render the list of
// targets when the list itself did not change (no addition/removal)
lastTargetRefresh: Date.now(),
};
function update(state = initialReducerState, action) {
switch (action.type) {
case "SELECT_TARGET": {
const { targetActorID } = action;
if (state.selected?.actorID === targetActorID) {
return state;
}
const selectedTarget = state.targets.find(
target => target.actorID === targetActorID
);
// It's possible that the target reducer is missing a target
if (!selectedTarget) {
return state;
}
return { ...state, selected: selectedTarget };
}
case "REGISTER_TARGET": {
return {
...state,
targets: [...state.targets, action.targetFront],
};
}
case "REFRESH_TARGETS": {
// The data _in_ targetFront was updated, so we only need to mutate the state,
// while keeping the same values.
return {
...state,
lastTargetRefresh: Date.now(),
};
}
case "UNREGISTER_TARGET": {
const targets = state.targets.filter(
target => target !== action.targetFront
);
let { selected } = state;
if (selected === action.targetFront) {
selected = null;
}
return { ...state, targets, selected };
}
}
return state;
}
module.exports = update;