internet-programming/lab3/js/lines-rest-api.js

const serverUrl = "http://localhost:8081";

function createLineObject(item, price, stock, count, image) {
    return {
        itemsId: item,
        price: parseFloat(price).toFixed(2),
        stock,
        count,
        sum: parseFloat((price * ((100 - stock) / 100)) * count).toFixed(2),
        image,
    };
}

export async function getAllItemTypes() {
    const response = await fetch(`${serverUrl}/items`);
    if (!response.ok) {
        throw response.statusText;
    }
    return response.json();
}

export async function getAllLines() {
    const response = await fetch(`${serverUrl}/lines?_expand=items`);
    if (!response.ok) {
        throw response.statusText;
    }
    return response.json();
}

export async function getLine(id) {
    const response = await fetch(`${serverUrl}/lines/${id}?_expand=items`);
    if (!response.ok) {
        throw response.statusText;
    }
    return response.json();
}

export async function createLine(item, price, stock, count, image) {
    const itemObject = createLineObject(item, price, stock, count, image);

    const options = {
        method: "POST",
        body: JSON.stringify(itemObject),
        headers: {
            "Accept": "application/json",
            "Content-Type": "application/json",
        },
    };

    const response = await fetch(`${serverUrl}/lines`, options);
    if (!response.ok) {
        throw response.statusText;
    }
    return response.json();
}

export async function updateLine(id, item, price, stock, count, image) {
    const itemObject = createLineObject(item, price, stock, count, image);

    const options = {
        method: "PUT",
        body: JSON.stringify(itemObject),
        headers: {
            "Accept": "application/json",
            "Content-Type": "application/json",
        },
    };

    const response = await fetch(`${serverUrl}/lines/${id}`, options);
    if (!response.ok) {
        throw response.statusText;
    }
    return response.json();
}

export async function deleteLine(id) {
    const options = {
        method: "DELETE",
    };

    const response = await fetch(`${serverUrl}/lines/${id}`, options);
    if (!response.ok) {
        throw response.statusText;
    }
    return response.json();
}