cdn-experiments/social/d4s-social.js

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/**
* Prints VRE d4s-social-posts (from @from to @quantity number)
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*/
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window.customElements.define('d4s-social-posts', class extends HTMLElement {
#basepath = 'https://api.d4science.org'
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#from = 1
#quantity = 10
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#nextIdx = null
#busy = false
#boot = null
#shadowRoot = null
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#unorderedlist = null
//#restRecentPosts = '/rest/2/posts/get-posts-vre' // old get, gets all posts unfiltered
#restRecentPosts = '/rest/2/posts/get-recent-posts-vre-by-range'
#restComments = '/rest/2/comments/get-comments-by-post-id'
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#style = `<style>
.d4s-social-posts {
list-style: none;
padding-left: 0;
}
.d4s-social-post {
margin: 5px 0 5px 0;
padding: 5px 0 5px 0;
border-bottom: 1px solid lightgray;
}
.d4s-social-post:last-child {
border-bottom: none;
}
.d4s-post-heading {
display: flex;
flex-wrap: wrap;
gap: 10px;
margin-bottom: 5px;
}
.d4s-post-avatar img {
object-fit: cover;
width: 40px;
height: 40px;
border-radius: 50%;
}
.d4s-post-meta {
display: flex;
flex-flow: column;
}
.d4s-post-meta .fullname {
font-weight: bold;
}
.d4s-post-meta .time {
font-size: small;
}
.d4s-post-body {
color: var(--color);
}
.d4s-post-footer {
display: flex;
flex-wrap: wrap;
gap: 10px;
}
.d4s-post-comments {
list-style: none;
}
.d4s-post-comment {
display: flex;
flex-wrap: wrap;
gap: 5px;
}
.d4s-comment-avatar img {
object-fit: cover;
width: 40px;
height: 40px;
border-radius: 50%;
}
.d4s-comment {
font-size: small;
margin: 0 5px;
}
.d4s-comment-body {
padding: 6px;
background-color: #f0f0f0;
border-radius: 9px;
}
.d4s-comment-body .fullname {
font-weight: bold;
}
.d4s-comment-footer {
margin: 3px 5px 6px 5px;
}
.d4s-post-footer {
margin: 8px 0 6px 0;
}
.comments-nr {
display: flex;
gap: 5px;
}
.likes-nr {
display: flex;
gap: 5px;
}
.d4s-post-attachment {
word-break: break-word;
font-size: small;
margin-top: 8px;
display: flex;
border: 1px solid lightgray;
border-radius: 2px;
}
.d4s-post-attachment .attachment-div {
display: contents;
}
.d4s-post-attachment .attachment-img {
object-fit: cover;
width: 120px;
height: 100px;
}
.d4s-post-attachment .attachment-info {
display: flex;
flex-flow: column;
gap: 8px;
padding: 8px;
background-color: #f0f0f0;
flex: 1;
}
.d4s-post-attachment .attachment-info .title {
word-break: break-word;
}
</style>`
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constructor() {
super()
this.#boot = document.querySelector("d4s-boot-2")
this.#shadowRoot = this.attachShadow({mode: 'open'})
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var template = document.createElement('template')
template.innerHTML = this.#style
this.#shadowRoot.appendChild(template.content.cloneNode(true))
var ul = document.createElement('ul')
ul.classList.add('d4s-social-posts')
this.#unorderedlist = ul
this.#shadowRoot.appendChild(ul)
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}
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connectedCallback() {
if (this.#boot) {
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this.#nextIdx = this.#from
this.loadPosts()
} else {
console.error('<d4s-boot-2> webcomponent not found in this page')
}
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}
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loadPosts(nr) {
if (this.#busy) {
return
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} else {
this.#busy = true
const url = new URL(this.#basepath + this.#restRecentPosts)
if (this.#nextIdx <= 0) {
this.#busy = false
throw 'Out of range index found'
}
var quparam = nr ? Number(nr) : this.#quantity
var params = {from: this.#nextIdx, quantity: quparam }
url.search = new URLSearchParams(params).toString()
console.log("url=" + url.href)
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this.#boot.secureFetch(url).then(reply => {
if(reply.status !== 200) throw "status=" + reply.status
return reply.json()
}).then(data => {
//console.log(data)
//this.#nextIdx = Number(data.result.last_returned_post_timeline_index)
this.#nextIdx = Number(data.result.last_returned_post_timeline_index) - 1
//this.#nextIdx = this.#from + this.#quantity
this.renderPosts(data.result.posts)
//this.rawRenderResponse(data)
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}).catch(err => {
const msg = 'Unable to load posts. '
console.error(msg + err)
throw msg
}).finally(() => {
this.#busy = false
})
}
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}
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morePosts(nr) {
this.loadPosts(nr)
}
renderPosts(posts) {
const ul = this.#unorderedlist
posts.forEach(post => {
//console.log(post)
var li = document.createElement('li')
li.id = post.key
li.classList.add('d4s-social-post')
const thumbnail = (!post.thumbnail_url.startsWith('http')) ? 'https://' + this.#boot.clientId + post.thumbnail_url : post.thumbnail_url
const datetime = new Date(0)
datetime.setUTCMilliseconds(post.time)
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const datetimestr = datetime.toLocaleString([], {year: 'numeric', month: 'numeric', day: 'numeric', hour: '2-digit', minute: '2-digit'})
li.innerHTML = `
<div class="d4s-post-heading">
<div class="d4s-post-avatar">
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<img src="${thumbnail}" onerror="this.style.display='none'"></slot>
</div>
<div class="d4s-post-meta">
<div class="fullname">${post.full_name}</div>
<div class="time">${datetimestr}</div>
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</div>
</div>
<div class="d4s-post-body">${post.description}</div>
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<div class="d4s-post-attachment"></div>
<div class="d4s-post-footer"></div>
`
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if (post.comments_no != "0") {
var commsnr = document.createElement('div')
commsnr.classList.add('comments-nr')
commsnr.innerHTML += `
<img src="assets/comment-ellipsis.svg" width="18"/>
<span>${post.comments_no}</span>
`
li.querySelector('.d4s-post-footer').appendChild(commsnr)
}
if (post.likes_no != "0") {
var likesnr = document.createElement('div')
likesnr.classList.add('likes-nr')
likesnr.innerHTML += `
<img src="assets/thumbs-up.svg" width="18" />
<span>${post.likes_no}</span>
`
li.querySelector('.d4s-post-footer').appendChild(likesnr)
}
if (post.link_title !== "") {
var attimg = document.createElement('div')
attimg.classList.add('attachment-div')
if (post.uri_thumbnail != "null") {
attimg.innerHTML += `<img src="${post.uri_thumbnail}" class="attachment-img" onerror="this.style.display='none'"/>`
li.querySelector('.d4s-post-attachment').appendChild(attimg)
}
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var attdesc = document.createElement('div')
attdesc.classList.add('attachment-info')
attdesc.innerHTML += `
<div class="title"><a href="${post.uri}">${post.link_title}</a></div>
<div class="url">${post.uri}</div>
<div class="description">${post.link_description}</div>
`
li.querySelector('.d4s-post-attachment').appendChild(attdesc)
} else {
li.querySelector('.d4s-post-attachment').remove()
}
ul.appendChild(li)
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let aimg = li.querySelector(".attachment-img")
if (aimg) {
aimg.addEventListener('load', (ev) => {
let prop = aimg.naturalWidth / aimg.naturalHeight
if (prop < 0.5 || prop > 2) {
aimg.style.objectFit = 'contain'
}
})
}
if (post.comments_no > 0) {
this.fetchComments(post.key)
}
})
}
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rawRenderResponse(data) {
var pre = document.createElement('pre')
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pre.innerText = JSON.stringify(data, null, " ")
this.#shadowRoot.appendChild(pre)
}
fetchComments(postid) {
const url = new URL(this.#basepath + this.#restComments)
var params = {key: postid}
url.search = new URLSearchParams(params).toString()
this.#boot.secureFetch(url).then(reply => {
if(reply.status !== 200) throw "status=" + reply.status
return reply.json()
}).then(data => {
this.renderComments(postid, data)
}).catch(err => console.error(`Unable to fetch comments for post ${postid}. ` + err))
}
renderComments(postid, comments) {
var li = this.#shadowRoot.getElementById(postid)
var cul = document.createElement('ul')
cul.classList.add('d4s-post-comments')
comments.result.forEach(comment => {
var cli = document.createElement('li')
cli.id = comment.feedid
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cli.classList.add('d4s-post-comment')
const thumbnail = (!comment.thumbnail_url.startsWith('http')) ? 'https://' + this.#boot.clientId + comment.thumbnail_url : comment.thumbnail_url
const datetime = new Date(0)
datetime.setUTCMilliseconds(comment.time)
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const datetimestr = datetime.toLocaleString([], {year: 'numeric', month: 'numeric', day: 'numeric', hour: '2-digit', minute: '2-digit'})
cli.innerHTML = `
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<div class="d4s-comment-avatar">
<img src="${thumbnail}" onerror="this.style.display='none'"></slot>
</div>
<div class="d4s-comment">
<div class="d4s-comment-body">
<div class="fullname">${comment.full_name}</div>
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<div class="d4s-comment-text">${comment.text}</div>
</div>
<div class="d4s-comment-footer">
<div class="time">${datetimestr}</div>
</div>
</div>
`
cul.appendChild(cli)
})
li.appendChild(cul)
}
static get observedAttributes() {
return ["url", "from", "quantity"];
}
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attributeChangedCallback(name, oldValue, newValue) {
if (oldValue !== newValue) {
switch (name) {
case "url":
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this.#basepath = newValue
break
case "from":
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this.#from = Number(newValue)
break
case "quantity":
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this.#quantity = Number(newValue)
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break
}
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}
}
get url() {
return this.#basepath
}
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set url(url) {
this.#basepath = url
this.setAttribute("url", url)
}
get from() {
return this.#from
}
set from(from) {
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this.#from = Number(from)
this.setAttribute("from", from)
}
get quantity() {
return this.#quantity
}
set quantity(quantity) {
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this.#quantity = Number(quantity)
this.setAttribute("quantity", quantity)
}
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});