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index.js
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index.js
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const BASE_URL = "https://webdev.alphacamp.io";
const INDEX_URL = BASE_URL + "/api/movies/";
const POSTER_URL = BASE_URL + "/posters/";
const MOVIES_PER_PAGE = 12;
const movies = [];
let filteredMovies = [];
const dataPanel = document.querySelector("#data-panel");
const searchForm = document.querySelector("#search-form");
const searchInput = document.querySelector("#search-input");
const paginator = document.querySelector("#paginator");
const showMessage = document.querySelector("#show-message");
function showFunctionMessage(message) {
const rawHTML = `
<svg xmlns="http://www.w3.org/2000/svg" style="display: none">
<symbol id="check-circle-fill" fill="currentColor" viewBox="0 0 16 16">
<path
d="M16 8A8 8 0 1 1 0 8a8 8 0 0 1 16 0zm-3.97-3.03a.75.75 0 0 0-1.08.022L7.477 9.417 5.384 7.323a.75.75 0 0 0-1.06 1.06L6.97 11.03a.75.75 0 0 0 1.079-.02l3.992-4.99a.75.75 0 0 0-.01-1.05z"
/>
</symbol>
</svg>
<div
class="alert alert-success d-flex m-5 align-items-center"
role="alert"
>
<svg
class="bi flex-shrink-0 me-2"
width="24"
height="24"
role="img"
aria-label="Success:"
>
<use xlink:href="#check-circle-fill" />
</svg>
<div>${message}</div>
</div>`;
showMessage.innerHTML = rawHTML;
}
function renderMovieList(data) {
let rawHTML = "";
//processing data : title, image
data.forEach((item) => {
rawHTML += `
<div class="col-sm-3">
<div class="mb-2">
<div class="card">
<img
src="${POSTER_URL + item.image}"
alt="Movie Poster"
/>
<div class="card-body">
<h5 class="card-title">${item.title}</h5>
</div>
<div class="card-footer">
<button
class="btn btn-primary btn-show-movie "
data-bs-toggle="modal"
data-bs-target="#movie-modal"
data-id="${item.id}"
>
More
</button>
<button
class="btn btn-info btn-add-favorite"
data-id="${item.id}"
>+</button>
</div>
</div>
</div>
</div>
`;
});
dataPanel.innerHTML = rawHTML;
}
// page > movie data
function getMoviesByPage(page) {
const data = filteredMovies.length ? filteredMovies : movies;
const startIndex = (page - 1) * MOVIES_PER_PAGE;
return data.slice(startIndex, startIndex + MOVIES_PER_PAGE);
}
function renderPaginator(amount) {
const numberOfPages = Math.ceil(amount / MOVIES_PER_PAGE);
let rawHTML = "";
for (let page = 1; page <= numberOfPages; page++) {
rawHTML += `<li class="page-item"><a class="page-link" href="#" data-page="${page}">${page}</a></li>`;
paginator.innerHTML = rawHTML;
}
}
function showMovieModal(id) {
const modalTitle = document.querySelector("#movie-modal-title");
const modalImage = document.querySelector("#movie-modal-image");
const modalDate = document.querySelector("#movie-modal-date");
const modalDescription = document.querySelector("#movie-modal-description");
axios.get(INDEX_URL + id).then((response) => {
const data = response.data.results;
modalTitle.innerText = data.title;
modalDate.innerText = "Release date: " + data.release_date;
modalDescription.innerText = data.description;
modalImage.innerHTML = `<img src="${
POSTER_URL + data.image
}" alt="movie-poster" class="img-fluid">`;
});
}
function addToFavorite(id) {
const list = JSON.parse(localStorage.getItem("favoriteMovies")) || [];
const movie = movies.find((movie) => movie.id === id);
if (list.some((movie) => movie.id === id)) {
return alert("This movie already exists!");
} else {
showFunctionMessage(
`Add the movie: ${movie.title} to favorite list successfully.`
);
}
list.push(movie);
localStorage.setItem("favoriteMovies", JSON.stringify(list));
}
paginator.addEventListener("click", function onPaginatorClicked(event) {
if (event.target.tagName !== "A") return;
const page = Number(event.target.dataset.page);
renderMovieList(getMoviesByPage(page));
});
dataPanel.addEventListener("click", function onPanelClick(event) {
if (event.target.matches(".btn-show-movie")) {
showMovieModal(event.target.dataset.id);
} else if (event.target.matches(".btn-add-favorite")) {
addToFavorite(Number(event.target.dataset.id));
}
});
searchForm.addEventListener("submit", function onSearchFormSubmitted(event) {
event.preventDefault();
filteredMovies = []; //add this
const keyword = searchInput.value.trim().toLowerCase();
for (const movie of movies) {
if (movie.title.toLowerCase().includes(keyword)) {
filteredMovies.push(movie);
}
}
if (filteredMovies.length === 0) {
return alert(`There is no any movie matches keyword: ${keyword}`);
}
renderPaginator(filteredMovies.length);
renderMovieList(getMoviesByPage(1));
});
axios
.get(INDEX_URL)
.then((response) => {
movies.push(...response.data.results); //...為展開陣列元素功能
renderPaginator(movies.length);
renderMovieList(getMoviesByPage(1));
})
.catch((err) => console.log(err));