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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 | 1x 11x 11x 1x 1x 10x 10x 1x 1x 9x 1x 3x 1x 2x 2x 5x 2x 1x 1x 1x 5x 5x 1x 1x 1x 1x 1x 1x 1x 1x 2x 2x 4x 2x 1x 1x 1x 1x 1x 3x 1x 2x 2x 5x 2x 1x 1x 1x 1x 1x | // get dogs from local storage
const get = () => {
const dogValue = localStorage.getItem("dogs");
if (dogValue === undefined) {
const dogCollection = { nextId: 1, dogs: [] }
return set(dogCollection);
}
const dogCollection = JSON.parse(dogValue);
if (dogCollection === null) {
const dogCollection = { nextId: 1, dogs: [] }
return set(dogCollection);
}
return dogCollection;
};
const getById = (id) => {
if (id === undefined) {
return { "error": "id is a required parameter" };
}
const dogCollection = get();
const dogs = dogCollection.dogs;
/* eslint-disable-next-line eqeqeq */ // we really do want == here, not ===
const index = dogs.findIndex((r) => r.id == id);
if (index === -1) {
return { "error": `dog with id ${id} not found` };
}
return { dog: dogs[index] };
}
// set dogs in local storage
const set = (dogCollection) => {
localStorage.setItem("dogs", JSON.stringify(dogCollection));
return dogCollection;
};
// add a dog to local storage
const add = (dog) => {
const dogCollection = get();
dog = { ...dog, id: dogCollection.nextId };
dogCollection.nextId++;
dogCollection.dogs.push(dog);
set(dogCollection);
return dog;
};
// update a dog in local storage
const update = (dog) => {
const dogCollection = get();
const dogs = dogCollection.dogs;
/* eslint-disable-next-line eqeqeq */ // we really do want == here, not ===
const index = dogs.findIndex((r) => r.id == dog.id);
if (index === -1) {
return { "error": `dog with id ${dog.id} not found` };
}
dogs[index] = dog;
set(dogCollection);
return { dogCollection: dogCollection };
};
// delete a dog from local storage
const del = (id) => {
if (id === undefined) {
return { "error": "id is a required parameter" };
}
const dogCollection = get();
const dogs = dogCollection.dogs;
/* eslint-disable-next-line eqeqeq */ // we really do want == here, not ===
const index = dogs.findIndex((r) => r.id == id);
if (index === -1) {
return { "error": `dog with id ${id} not found` };
}
dogs.splice(index, 1);
set(dogCollection);
return { dogCollection: dogCollection };
};
const dogUtils = {
get,
getById,
add,
update,
del
};
export { dogUtils };
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