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246commit m feat adding category divs on enter press
```javascript
const $app = document.querySelector("#app");
const $detailDialog = document.querySelector("#post-detail-dialog");
const $filterDialog = document.querySelector("#filter-dialog");
const $filterByUsernameInput = $filterDialog.querySelector(
"#filter-by-username"
);
const $filterByCategoriesInput = $filterDialog.querySelector(
"#filter-by-categories"
);
const $cancleButton = document.querySelector("#cancel");
const $filterButton = document.querySelector("#filter");
const $categoryOutput = document.querySelector('.category-output')
const fetchJSON = (path) => fetch(path).then((res) => res.json());
const POSTS = await fetchJSON("../../json/posts.json");
const CATEGORIES = await fetchJSON("../../json/categorys.json");
const MEMBERS = await fetchJSON("../../json/members.json");
// global states
const modalState = new Proxy(
{ open: false },
{
set(target, key, value) {
enableScroll();
if (key === "open" && value) {
disableScroll();
}
target[key] = value;
return true;
},
}
);
const scrollStates = {
postStartIndex: 0,
postEndIndex: 30,
arr: POSTS,
totalResultCount: POSTS.length,
updateScrollState: function () {
this.postStartIndex = this.postEndIndex;
this.postEndIndex += 30;
},
resetIndex: function () {
this.postStartIndex = 0;
this.postEndIndex = 30;
},
updateResult: function (arr) {
this.arr = arr;
this.totalResultCount = arr.length;
},
};
const keyPressStates = {};
const filterStates = {
username: "",
categories: [],
reset: function () {
this.categories = [];
this.username = "";
},
};
// util functions
const removePosts = () =>
document.querySelectorAll(".post").forEach(($post) => $post.remove());
const getUser = (memberIndex) =>
MEMBERS.find(({ index }) => memberIndex === index);
const getCategories = (categoryIndexArray) =>
CATEGORIES.filter(({ index }) => categoryIndexArray.includes(index));
const makeCategoryInnerHTML = (categoriesArray) =>
categoriesArray.reduce(
(innerHTML, { name, color }) =>
(innerHTML += `<span style="background-color: ${color}" class="category">${name}</span>`),
""
);
const categoryNameTocategoryId = (categoryName) =>
CATEGORIES.find(({ name }) => name === categoryName).index;
const isValidCategory = (category) =>
!filterStates.categories.includes(categoryNameTocategoryId(category));
const filterByCategories = (arr, categories) =>
arr.filter(({ categorys }) =>
categories.every((categoryID) => categorys.includes(categoryID))
);
const categoryIDToCategory = (id) => CATEGORIES.find(({ index }) => index === id);
const filterByUsername = (arr, username) => {
const userData = MEMBERS.find(({ name }) => name === username);
if (!userData) return false;
return arr.filter(({ memberIndex }) => memberIndex === userData.index);
};
function filterSearch(posts, { username, categories }) {
const filteredByUsername = filterByUsername(posts, username);
const fileredByCategories = filterByCategories(posts, categories);
if (categories && !filteredByUsername) return fileredByCategories;
if (!filteredByUsername) return false;
if (filteredByUsername && !categories) return filteredByUsername;
return filterByCategories(filteredByUsername, categories);
}
function preventScroll(e) {
e.preventDefault();
e.stopPropagation();
return false;
}
function disableScroll() {
document.body.addEventListener("wheel", preventScroll, { passive: false });
}
function enableScroll() {
document.body.removeEventListener("wheel", preventScroll, { passive: false });
}
// main
POSTS.sort((a, b) => new Date(b.date) - new Date(a.date));
POSTS.slice(0, 30).forEach(renderPosts);
window.onscroll = () => {
const fullPageHeight = document.body.clientHeight;
if (window.scrollY + window.innerHeight >= fullPageHeight - 200) {
const { postStartIndex, postEndIndex, totalResultCount, arr } =
scrollStates;
if (postStartIndex >= totalResultCount) return;
console.log(scrollStates);
scrollStates.updateScrollState();
console.log(scrollStates);
arr.slice(postStartIndex, postEndIndex).forEach(renderPosts);
}
};
$detailDialog.addEventListener("click", (e) => {
if (e.target === $detailDialog) {
$detailDialog.close();
modalState.open = false;
}
});
window.addEventListener("keyup", (e) => delete keyPressStates[e.key]);
window.addEventListener("keydown", (e) => {
if (modalState.open) return;
keyPressStates[e.key] = true;
if (keyPressStates.Shift && keyPressStates.Control) {
modalState.open = true;
$filterDialog.showModal();
}
});
$filterDialog.addEventListener("click", (e) => {
if (e.target === $filterDialog || e.target === $cancleButton) {
$filterDialog.close();
modalState.open = false;
}
});
$filterByCategoriesInput.addEventListener("keydown", (e) => {
const { categories } = filterStates;
const { value } = $filterByCategoriesInput;
if (!value) return;
if (e.key === "Enter" && isValidCategory(value.toLowerCase())) {
const categoryID = categoryNameTocategoryId(value.toLowerCase());
filterStates.categories = [
...categories,
categoryID,
];
renderCategory(categoryIDToCategory(categoryID));
$filterByCategoriesInput.value = "";
console.log(filterStates);
}
});
$filterButton.addEventListener("click", () => {
const username = $filterByUsernameInput.value;
filterStates.username = username;
console.log(filterStates);
const filteredPosts = filterSearch(POSTS, filterStates);
window.scrollTo(0, 0);
scrollStates.resetIndex();
scrollStates.updateResult(filteredPosts);
removePosts();
filterStates.reset();
modalState.open = false;
$filterDialog.close();
console.log(filteredPosts, scrollStates);
});
// TODO
function renderCategory({ index, name, color }) {
const $categorySpan = document.createElement('span');
$categorySpan.className = 'category';
$categorySpan.style.background = `${color}`;
$categorySpan.innerText = name;
const $removeCategorySpan = document.createElement('span');
$removeCategorySpan.innerText = 'x';
$removeCategorySpan.dataset.id = index;
// make handler to delete element on click
$removeCategorySpan.addEventListener('click', (e) => console.log(e.target.dataset.id));
// FIX append to come first
$categorySpan.appendChild($removeCategorySpan);
$categoryOutput.appendChild($categorySpan);
}
function renderPosts({ title, contents, date, memberIndex, categorys }) {
const { name } = getUser(Number(memberIndex));
const $post = document.createElement("article");
$post.className = "post";
$post.innerHTML = `
<div class="image"></div>
<h3 class="title">${title}</h3>
<p class="content">${contents}</p>
<section class="post-details">
<span class="created-by">${name}</span>
<span class="timestamp">${date}</span>
</section>
`;
$post.addEventListener("click", () => {
modalState.open = true;
showPostDetailModal(title, contents, date, name, categorys);
});
$app.appendChild($post);
}
function showPostDetailModal(title, contents, date, username, categorys) {
const categoriesArray = getCategories(categorys);
const categoryInnerHTML = makeCategoryInnerHTML(categoriesArray);
$detailDialog.showModal();
$detailDialog.innerHTML = `
<div>
<div class="image"></div>
<h3 class="title">${title}</h3>
<p class="content">${contents}</p>
<section class="categories">${categoryInnerHTML}</section>
<section class="post-details">
<span class="created-by">${username}</span>
<span class="timestamp">${date}</span>
</section>
</div>
`;
}