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Pagination for known spam works well enough

This commit is contained in:
towards-a-new-leftypol 2023-08-24 18:07:37 -04:00
parent efe46f5c0e
commit dd651d5cac
3 changed files with 202 additions and 34 deletions
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2
index.html
View File

@ -8,7 +8,7 @@
</head>
<body>
<header>
<h1>Hello World</h1>
<h1>Spam Noticer</h1>
<div class="info-container"></div>
</header>
<main></main>

207
script.js
View File

@ -108,7 +108,7 @@ function resolvePath(routes, path, query_params) {
function resolve(path_data, route_part) {
console.log('calling content');
console.log(path_data, route_part);
console.log(path_data, route_part, query_params);
route_part.content(path_data, query_params);
}
@ -140,6 +140,165 @@ var ROUTES = RoutePart(
, handlePageRoot
);
/**
* Pagination
*/
function createPagination(start_page_num, url, name, page_size, renderContent) {
const numDisplayedPages = 5; // Specify the number of numbered links to display
// Helper function to update the URL with the new page number
function updatePageNumberInURL(pageNum) {
let params;
if (window.location.search == "") {
params = {}
} else {
console.log("calling parseQueryParams. window.location.search:", window.location.search);
params = parseQueryParams(window.location.search.substring(1));
}
console.log("updatePageNumberInURL", params);
params[name.replaceAll(' ', '_')] = pageNum;
changeUrl("/", params, true);
}
function createPaginationControls(page_num, dataset_size) {
const container = div();
container.classList.add('pagination');
// Calculate the total number of pages
const total_pages = Math.ceil(dataset_size / page_size);
console.log('page_num:', page_num, 'page_size:', page_size, 'dataset_size:', dataset_size, 'total_pages:', total_pages);
function createNumberedLink(pageNum) {
const link = document.createElement('a');
link.addEventListener('click', function(e) {
//loadNthPage(url, pageNum - 1, page_size)
e.preventDefault();
updatePageNumberInURL(pageNum - 1);
});
link.appendChild(text(pageNum));
if (pageNum - 1 === page_num) {
link.classList.add('active'); // Apply CSS class for active page
} else {
link.setAttribute('href', '#');
}
return link;
}
// Add Previous link if applicable
if (page_num > 0) {
const prev_link = document.createElement('a');
prev_link.setAttribute('href', '#');
prev_link.addEventListener('click', function(e) {
e.preventDefault();
//loadNthPage(url, page_num - 1, page_size)
updatePageNumberInURL(page_num - 1);
});
prev_link.appendChild(text('Previous'));
container.appendChild(prev_link);
}
// Add numbered links
const firstDisplayedPage = Math.max(1, page_num - Math.floor(numDisplayedPages / 2));
const lastDisplayedPage = Math.min(total_pages, firstDisplayedPage + numDisplayedPages - 1);
if (firstDisplayedPage > 1) {
container.appendChild(createNumberedLink(1));
if (firstDisplayedPage > 2) {
container.appendChild(text('...'));
}
}
for (let i = firstDisplayedPage; i <= lastDisplayedPage; i++) {
container.appendChild(createNumberedLink(i));
}
if (lastDisplayedPage < total_pages) {
if (lastDisplayedPage < total_pages - 1) {
container.appendChild(text('...'));
}
container.appendChild(createNumberedLink(total_pages));
}
// Add Next link if applicable
if (page_num < total_pages - 1) {
const next_link = document.createElement('a');
next_link.setAttribute('href', '#');
next_link.addEventListener('click', function(e) {
//loadNthPage(url, page_num + 1, page_size)
e.preventDefault();
updatePageNumberInURL(page_num + 1);
});
next_link.appendChild(text('Next'));
container.appendChild(next_link);
}
return container;
}
function loadNthPage(url, page_num) {
// Calculate the range of results based on the current page
const start = page_num * page_size;
const end = start + page_size - 1;
var headers = {
'Authorization': 'Bearer ' + GlobalVars.settings.jwt,
//'Prefer': 'count=estimated',
'Prefer': 'count=exact',
'Range-Unit': 'items',
'Range': `${start}-${end}`
};
pageInfoText.innerText = `Loading page ${page_num} of ${name}`;
cancelGlobalEvts();
if (page_num > 0) {
}
return get(url, cancel, headers)
.then(function(response) {
// Retrieve the range and total number of results from the HTTP headers
const rangeHeader = response.getResponseHeader('Content-Range');
const [start, end, total_results] = parseRangeHeader(rangeHeader);
const json = JSON.parse(response.responseText);
const controlsA = createPaginationControls(page_num, total_results);
const controlsB = createPaginationControls(page_num, total_results);
renderContent(json, controlsA, controlsB);
pageInfoText.innerText = `${name} ${page_num + 1}/${Math.ceil(total_results / page_size)}`;
})
.catch(caught.bind(this, `Failed to load ${url} page ${page_num}. Reason:`));
}
loadNthPage(url, start_page_num);
}
// Helper function to parse the Content-Range header
function parseRangeHeader(rangeHeader) {
const match = rangeHeader.match(/(\d+)-(\d+)\/(\d+)/);
if (match) {
const start = parseInt(match[1]);
const end = parseInt(match[2]);
const totalResults = parseInt(match[3]);
return [start, end, totalResults];
}
return [0, 0, 0]; // Default values if the header is not available or not in the expected format
}
/**
* Functions
*/
@ -156,7 +315,7 @@ function resolveResponse(resolve, reject) {
}
} else {
if (e.target.status >= 200 && e.target.status < 300) {
return resolve(e.target.responseText);
return resolve(e.target);
} else {
reject(new Error('API responded with ' + e.target.status));
}
@ -361,10 +520,6 @@ function keepElements(elem_selectors) {
}
}
function loadJwt() {
cancelGlobalEvts();
}
function caught(m, e) {
console.error(m);
console.error(e);
@ -402,7 +557,8 @@ function mkSpamImgElement(img_description) {
function renderNav() {
var nav = document.createElement('nav');
var a_elem = _mkelem('a', text('All Known Spam Posts'));
a_elem.addEventListener('click', function() {
a_elem.addEventListener('click', function(e) {
e.preventDefault();
changeUrl('/', null, true);
});
a_elem.setAttribute('href', '#');
@ -476,7 +632,6 @@ function renderAttachmentReason(attachment, known_spam_post_attachments) {
'match': `${Math.round(distance * 100 * 10) / 10}%`
};
container.appendChild(renderThings(things));
return container;
}
@ -556,22 +711,21 @@ function renderOverviewPost(post) {
return postContainer;
}
function loadKnownSpamPosts() {
pageInfoText.innerText = 'Loading all known spam posts...';
cancelGlobalEvts();
function loadKnownSpamPosts(params) {
if (params == null) {
params = {};
}
const pageName = "known spam posts";
var url = GlobalVars.settings.postgrest_url + '/known_spam_post?select=*,known_spam_post_attachment(*,phash::text)'
var headers = {
'Authorization': 'Bearer ' + GlobalVars.settings.jwt
};
get(url, cancel, headers)
.then(function(response) {
var json = JSON.parse(response);
console.log("results for", url, response);
const pageNum = Number(params[pageName.replaceAll(' ', '_')] || 0);
function renderContent(json, controlsA, controlsB) {
pageInfoText.innerText = 'Have these known spam posts:';
var mainElem = document.querySelector('main');
mainElem.innerHTML = '';
mainElem.appendChild(controlsA);
json.forEach(function (post) {
var postElem = renderOverviewPost(post);
@ -582,8 +736,11 @@ function loadKnownSpamPosts() {
mainElem.appendChild(postElem);
});
})
.catch(caught.bind(this, "Failed to load known spam posts. Reason:"));
mainElem.appendChild(controlsB);
}
createPagination(pageNum, url, pageName, 25, renderContent);
}
function changeUrl(path, search_query, push_state) {
@ -602,7 +759,7 @@ function changeUrl(path, search_query, push_state) {
function handlePageRoot(_, query_params) {
console.log("handlePageRoot", JSON.stringify(query_params));
return loadKnownSpamPosts();
return loadKnownSpamPosts(query_params);
}
function showSpamPost(path_data, _) {
@ -638,7 +795,7 @@ function showSpamPost(path_data, _) {
get(url, cancel, headers)
.then(function(response) {
var json = JSON.parse(response);
var json = JSON.parse(response.responseText);
console.log(json);
pageInfoText.innerText = 'Known Spam Post';
@ -657,7 +814,7 @@ function showSpamPost(path_data, _) {
get(url, cancel, headers)
.then(function(response) {
var json = JSON.parse(response);
var json = JSON.parse(response.responseText);
console.log("known spam attachments:", json);
knownSpamAttachmentsSectionElem
.appendChild(renderKnownSpamAttachments(json));
@ -706,8 +863,10 @@ function gatherElements() {
}
function parseQueryParams(querystring) {
console.log('parseQueryParams', querystring, querystring.split('&'));
return querystring.split('&')
.map(function(part) {
console.log(part);
return part.split('=').map(decodeURIComponent);
})
.reduce(function(acc, pair) { return { [pair[0]]: pair[1] } }, {});
@ -739,7 +898,7 @@ function getSettings() {
pageInfoText.innerText = 'Loading settings';
return get('/static/settings.json', cancel)
.then(function(response) {
var result = JSON.parse(response);
var result = JSON.parse(response.responseText);
console.log("settings response:", result);
GlobalVars.settings = result;
pageInfoText.innerText = 'Have settings.';

9
style.css
View File

@ -28,3 +28,12 @@ header {
.attachment {
display: flow-root;
}
.pagination a {
margin: 1em;
font-size: 2em;
}
main nav {
margin: 1em;
}