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Copy pathinfinite.js
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841 lines (768 loc) · 26.6 KB
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// Common code for a discussion are a of messages about something
// This version runs over a series of files for different time periods
//
// Parameters for the whole chat like its title are stred on
// index.ttl#this and the chats messages are stored in YYYY/MM/DD/chat.ttl
//
/* global alert $rdf */
import DateFolder from './dateFolder'
// @@ trace20190428T1745
const SERVER_MKDIRP_BUG = true
const UI = {
authn: require('../authn/authn'),
icons: require('../iconBase'),
log: require('../log'),
ns: require('../ns'),
media: require('../media-capture'),
pad: require('../pad'),
rdf: require('rdflib'),
store: require('../store'),
style: require('../style'),
utils: require('../utils'),
widgets: require('../widgets')
}
// const utils = require('./utils')
const { renderMessage, creatorAndDate } = require('./message')
const bookmarks = require('./bookmarks')
// module.exports = module.exports || {}
// module.exports.infiniteMessageArea =
async function createIfNotExists (doc, contentType = 'text/turtle', data = '') {
const fetcher = UI.store.fetcher
try {
var response = await fetcher.load(doc)
} catch (err) {
if (err.response.status === 404) {
console.log(
'createIfNotExists: doc does NOT exist, will create... ' + doc
)
try {
response = await fetcher.webOperation('PUT', doc.uri, {
data,
contentType
})
} catch (err) {
console.log('createIfNotExists doc FAILED: ' + doc + ': ' + err)
throw err
}
delete fetcher.requested[doc.uri] // delete cached 404 error
// console.log('createIfNotExists doc created ok ' + doc)
return response
} else {
console.log(
'createIfNotExists doc load error NOT 404: ' + doc + ': ' + err
)
throw err
}
}
// console.log('createIfNotExists: doc exists, all good: ' + doc)
return response
}
function desktopNotification (str) {
// Let's check if the browser supports notifications
if (!('Notification' in window)) {
console.warn('This browser does not support desktop notification')
} else if (Notification.permission === 'granted') {
// Let's check whether notification permissions have already been granted
// eslint-disable-next-line no-new
new Notification(str)
} else if (Notification.permission !== 'denied') {
// Otherwise, we need to ask the user for permission
Notification.requestPermission().then(function (permission) {
// If the user accepts, let's create a notification
if (permission === 'granted') {
// eslint-disable-next-line no-new
new Notification(str)
}
})
}
// At last, if the user has denied notifications, and you
// want to be respectful there is no need to bother them any more.
}
export function infiniteMessageArea (dom, kb, chatChannel, options) {
kb = kb || UI.store
const ns = UI.ns
const WF = $rdf.Namespace('http://www.w3.org/2005/01/wf/flow#')
const DCT = $rdf.Namespace('http://purl.org/dc/terms/')
// const POSIX = $rdf.Namespace('http://www.w3.org/ns/posix/stat#')
options = options || {}
var newestFirst = options.newestFirst === '1' || options.newestFirst === true // hack for now
const dateFolder = new DateFolder(chatChannel, 'chat.ttl')
options.authorAboveContent = true
// var participation // An object tracking users use and prefs
const messageBodyStyle = UI.style.messageBodyStyle
// var messageBodyStyle = 'white-space: pre-wrap; width: 90%; font-size:100%; border: 0.07em solid #eee; padding: .2em 0.5em; margin: 0.1em 1em 0.1em 1em;'
// 'font-size: 100%; margin: 0.1em 1em 0.1em 1em; background-color: white; white-space: pre-wrap; padding: 0.1em;'
var div = dom.createElement('div')
var menuButton
const statusArea = div.appendChild(dom.createElement('div'))
var userContext = { dom, statusArea, div: statusArea } // logged on state, pointers to user's stuff
var me
var updater = UI.store.updater
/** Does a file exist on the web?
* @returns {Boolean}
*/
/*
async function documentExists (doc) {
try {
await kb.fetcher.load(doc)
} catch (err) {
if (err.response.status === 404) {
return false
} else {
console.log('documentExists: doc load error NOT 404: ' + doc + ': ' + err)
throw err
}
}
return true
}
*/
/* Form for a new message
*/
function newMessageForm (messageTable) {
var form = dom.createElement('tr')
var lhs = dom.createElement('td')
var middle = dom.createElement('td')
var rhs = dom.createElement('td')
form.appendChild(lhs)
form.appendChild(middle)
form.appendChild(rhs)
form.AJAR_date = '9999-01-01T00:00:00Z' // ISO format for field sort
var field, sendButton
async function sendMessage (text) {
var now = new Date()
await addNewTableIfNewDay(now)
if (!text) {
field.setAttribute('style', messageBodyStyle + 'color: #bbb;') // pendingedit
field.disabled = true
}
var sts = []
var timestamp = '' + now.getTime()
var dateStamp = $rdf.term(now)
const chatDocument = dateFolder.leafDocumentFromDate(now)
var message = kb.sym(chatDocument.uri + '#' + 'Msg' + timestamp)
var content = kb.literal(text || field.value)
// if (text) field.value = text No - don't destroy half-finsihed user input
sts.push(
new $rdf.Statement(chatChannel, ns.wf('message'), message, chatDocument)
)
sts.push(
new $rdf.Statement(message, ns.sioc('content'), content, chatDocument)
)
sts.push(
new $rdf.Statement(message, DCT('created'), dateStamp, chatDocument)
)
if (me) {
sts.push(
new $rdf.Statement(message, ns.foaf('maker'), me, chatDocument)
)
}
function sendComplete () {
var bindings = {
'?msg': message,
'?content': content,
'?date': dateStamp,
'?creator': me
}
renderMessage(liveMessageTable, bindings, false, options, userContext) // not green
if (!text) {
field.value = '' // clear from out for reuse
field.setAttribute('style', messageBodyStyle)
field.disabled = false
field.scrollIntoView(newestFirst) // allign bottom (top)
field.focus() // Start typing next line immediately
field.select()
}
}
if (
SERVER_MKDIRP_BUG &&
(kb.fetcher.requested[chatDocument.uri] === undefined ||
kb.fetcher.requested[chatDocument.uri] === 404)
) {
console.log(
'@@@ SERVER_MKDIRP_BUG: Should only happen once: create chat file: ' +
chatDocument
)
await createIfNotExists(chatDocument)
}
try {
await updater.update([], sts)
} catch (err) {
form.appendChild(
UI.widgets.errorMessageBlock(dom, 'Error writing message: ' + err)
)
return
}
sendComplete()
} // sendMessage
form.appendChild(dom.createElement('br'))
// DRAG AND DROP
function droppedFileHandler (files) {
const base = messageTable.chatDocument.dir().uri
UI.widgets.uploadFiles(
kb.fetcher,
files,
base + 'Files',
base + 'Pictures',
async function (theFile, destURI) {
// @@@@@@ Wait for eachif several
await sendMessage(destURI)
}
)
}
// When a set of URIs are dropped on the field
var droppedURIHandler = async function (uris) {
for (var uri of uris) {
await sendMessage(uri)
}
}
// When we are actually logged on
function turnOnInput () {
if (options.menuHandler && menuButton) {
const menuOptions = {
me,
dom,
div,
newBase: messageTable.chatDocument.dir().uri
}
menuButton.addEventListener(
'click',
event => {
options.menuHandler(event, chatChannel, menuOptions)
},
false
)
}
// Turn on message input
creatorAndDate(lhs, me, '', null)
field = dom.createElement('textarea')
middle.innerHTML = ''
middle.appendChild(field)
field.rows = 3
// field.cols = 40
field.setAttribute('style', messageBodyStyle + 'background-color: #eef;')
// Trap the Enter BEFORE it is used ti make a newline
field.addEventListener(
'keydown',
async function (e) {
// User preference?
if (e.keyCode === 13) {
if (!e.altKey) {
// Alt-Enter just adds a new line
await sendMessage()
}
}
},
false
)
UI.widgets.makeDropTarget(field, droppedURIHandler, droppedFileHandler)
rhs.innerHTML = ''
sendButton = UI.widgets.button(
dom,
UI.icons.iconBase + 'noun_383448.svg',
'Send'
)
sendButton.setAttribute('style', UI.style.buttonStyle + 'float: right;')
sendButton.addEventListener('click', _event => sendMessage(), false)
rhs.appendChild(sendButton)
const chatDocument = dateFolder.leafDocumentFromDate(new Date())
var imageDoc
function getImageDoc () {
imageDoc = kb.sym(
chatDocument.dir().uri + 'Image_' + Date.now() + '.png'
)
return imageDoc
}
async function tookPicture (imageDoc) {
if (imageDoc) {
await sendMessage(imageDoc.uri)
}
}
middle.appendChild(
UI.media.cameraButton(dom, kb, getImageDoc, tookPicture)
)
UI.pad.recordParticipation(chatChannel, chatChannel.doc()) // participation =
} // turn on inpuut
const context = { div: middle, dom: dom }
UI.authn.logIn(context).then(context => {
me = context.me
turnOnInput()
Object.assign(context, userContext)
bookmarks.findBookmarkDocument(context).then(context => {
console.log('Bookmark file: ' + context.bookmarkDocument)
})
})
return form
}
// ///////////////////////////////////////////////////////////////////////
function syncMessages (about, messageTable) {
var displayed = {}
var ele, ele2
for (ele = messageTable.firstChild; ele; ele = ele.nextSibling) {
if (ele.AJAR_subject) {
displayed[ele.AJAR_subject.uri] = true
}
}
var messages = kb
.statementsMatching(
about,
ns.wf('message'),
null,
messageTable.chatDocument
)
.map(st => {
return st.object
})
var stored = {}
messages.map(function (m) {
stored[m.uri] = true
if (!displayed[m.uri]) {
addMessage(m, messageTable)
}
})
// eslint-disable-next-line space-in-parens
for (ele = messageTable.firstChild; ele; ) {
ele2 = ele.nextSibling
if (ele.AJAR_subject && !stored[ele.AJAR_subject.uri]) {
messageTable.removeChild(ele)
}
ele = ele2
}
for (ele = messageTable.firstChild; ele; ele = ele.nextSibling) {
if (ele.AJAR_subject) {
// Refresh thumbs up etc
UI.widgets.refreshTree(ele) // Things inside may have changed too
}
}
} // syncMessages
var addMessage = function (message, messageTable) {
var bindings = {
'?msg': message,
'?creator': kb.any(message, ns.foaf('maker')),
'?date': kb.any(message, DCT('created')),
'?content': kb.any(message, ns.sioc('content'))
}
renderMessage(
messageTable,
bindings,
messageTable.fresh,
options,
userContext
) // fresh from elsewhere
}
// ////////
/* Add a new messageTable at the top/bottom
*/
async function insertPreviousMessages (backwards) {
const extremity = backwards ? earliest : latest
let date = extremity.messageTable.date // day in mssecs
date = await dateFolder.loadPrevious(date, backwards) // backwards
console.log(
`insertPreviousMessages: from ${
backwards ? 'backwards' : 'forwards'
} loadPrevious: ${date}`
)
if (!date && !backwards && !liveMessageTable) {
await appendCurrentMessages() // If necessary skip to today and add that
}
if (!date) return true // done
var live = false
if (!backwards) {
const todayDoc = dateFolder.leafDocumentFromDate(new Date())
const doc = dateFolder.leafDocumentFromDate(date)
live = doc.sameTerm(todayDoc) // Is this todays?
}
const newMessageTable = await createMessageTable(date, live)
extremity.messageTable = newMessageTable // move pointer to earliest
if (backwards ? newestFirst : !newestFirst) {
// put on bottom or top
div.appendChild(newMessageTable)
} else {
// put on top as we scroll back
div.insertBefore(newMessageTable, div.firstChild)
}
return live // not done
}
/* Remove message tables earlier than this one
*/
function removePreviousMessages (backwards, messageTable) {
if (backwards ? newestFirst : !newestFirst) {
// it was put on bottom
while (messageTable.nextSibling) {
div.removeChild(messageTable.nextSibling)
}
} else {
// it was put on top as we scroll back
while (messageTable.previousSibling) {
div.removeChild(messageTable.previousSibling)
}
}
const extr = backwards ? earliest : latest
extr.messageTable = messageTable
}
/* Load and render message table
** @returns DOM element generates
*/
async function createMessageTable (date, live) {
console.log(' createMessageTable for ' + date)
const chatDocument = dateFolder.leafDocumentFromDate(date)
try {
await kb.fetcher.load(chatDocument)
} catch (err) {
const messageTable = dom.createElement('table')
const statusTR = messageTable.appendChild(dom.createElement('tr')) // ### find status in exception
if (err.response && err.response.status && err.response.status === 404) {
console.log('Error 404 for chat file ' + chatDocument)
return renderMessageTable(date, live) // no mssage file is fine.. will be craeted later
// statusTR.appendChild(UI.widgets.errorMessageBlock(dom, 'no message file', 'white'))
} else {
console.log('*** Error NON 404 for chat file ' + chatDocument)
statusTR.appendChild(UI.widgets.errorMessageBlock(dom, err, 'pink'))
}
return statusTR
}
return renderMessageTable(date, live)
}
function renderMessageTable (date, live) {
var scrollBackButton
var scrollForwardButton
/// ///////////////// Scroll down adding more above
async function extendBackwards () {
const done = await insertPreviousMessages(true)
if (done) {
scrollBackButton.firstChild.setAttribute(
'src',
UI.icons.iconBase + 'noun_T-Block_1114655_000000.svg'
) // T
scrollBackButton.disabled = true
messageTable.initial = true
} else {
messageTable.extendedBack = true
}
setScrollBackButtonIcon()
return done
}
function setScrollBackButtonIcon () {
const sense = messageTable.extendedBack ? !newestFirst : newestFirst
const scrollBackIcon = messageTable.initial
? 'noun_T-Block_1114655_000000.svg'
: getScrollbackIcon(sense)
scrollBackButton.firstChild.setAttribute(
'src',
UI.icons.iconBase + scrollBackIcon
)
function getScrollbackIcon (sense) {
return sense ? 'noun_1369241.svg' : 'noun_1369237.svg'
}
}
async function scrollBackButtonHandler (_event) {
if (messageTable.extendedBack) {
removePreviousMessages(true, messageTable)
messageTable.extendedBack = false
setScrollBackButtonIcon()
} else {
await extendBackwards()
}
}
/// ////////////// Scroll up adding more below
async function extendForwards () {
const done = await insertPreviousMessages(false)
if (done) {
scrollForwardButton.firstChild.setAttribute(
'src',
UI.icons.iconBase + 'noun_T-Block_1114655_000000.svg'
)
scrollForwardButton.disabled = true
messageTable.final = true
} else {
messageTable.extendedForwards = true
}
setScrollForwardButtonIcon()
return done
}
function setScrollForwardButtonIcon () {
const sense = messageTable.extendedForwards ? !newestFirst : newestFirst // noun_T-Block_1114657_000000.svg
const scrollForwardIcon = messageTable.final
? 'noun_T-Block_1114657_000000.svg'
: getScrollForwardButtonIcon(sense)
scrollForwardButton.firstChild.setAttribute(
'src',
UI.icons.iconBase + scrollForwardIcon
)
function getScrollForwardButtonIcon (sense) {
return !sense ? 'noun_1369241.svg' : 'noun_1369237.svg'
}
}
async function scrollForwardButtonHandler (_event) {
if (messageTable.extendedForwards) {
removePreviousMessages(false, messageTable)
messageTable.extendedForwards = false
setScrollForwardButtonIcon()
} else {
await extendForwards() // async
latest.messageTable.scrollIntoView(newestFirst)
}
}
/// ///////////////////////
var messageTable = dom.createElement('table')
messageTable.extendBackwards = extendBackwards // Make function available to scroll stuff
messageTable.extendForwards = extendForwards // Make function available to scroll stuff
// var messageButton
messageTable.date = date
var chatDocument = dateFolder.leafDocumentFromDate(date)
messageTable.chatDocument = chatDocument
messageTable.fresh = false
messageTable.setAttribute('style', 'width: 100%;') // fill that div!
if (live) {
messageTable.final = true
liveMessageTable = messageTable
latest.messageTable = messageTable
var tr = newMessageForm(messageTable)
if (newestFirst) {
messageTable.insertBefore(tr, messageTable.firstChild) // If newestFirst
} else {
messageTable.appendChild(tr) // not newestFirst
}
messageTable.inputRow = tr
}
/// ///// Infinite scroll
//
// @@ listen for swipe past end event not just button
if (options.infinite) {
const scrollBackButtonTR = dom.createElement('tr')
const scrollBackButtonCell = scrollBackButtonTR.appendChild(
dom.createElement('td')
)
// up traingles: noun_1369237.svg
// down triangles: noun_1369241.svg
const scrollBackIcon = newestFirst
? 'noun_1369241.svg'
: 'noun_1369237.svg' // down and up arrows respoctively
scrollBackButton = UI.widgets.button(
dom,
UI.icons.iconBase + scrollBackIcon,
'Previous messages ...'
)
scrollBackButtonCell.style = 'width:3em; height:3em;'
scrollBackButton.addEventListener('click', scrollBackButtonHandler, false)
messageTable.extendedBack = false
scrollBackButtonCell.appendChild(scrollBackButton)
setScrollBackButtonIcon()
const dateCell = scrollBackButtonTR.appendChild(dom.createElement('td'))
dateCell.style =
'text-align: center; vertical-align: middle; color: #888; font-style: italic;'
dateCell.textContent = UI.widgets.shortDate(date.toISOString(), true) // no time, only date
// @@@@@@@@@@@ todo move this button to other end of message cell, o
const scrollForwardButtonCell = scrollBackButtonTR.appendChild(
dom.createElement('td')
)
const scrollForwardIcon = newestFirst
? 'noun_1369241.svg'
: 'noun_1369237.svg' // down and up arrows respoctively
scrollForwardButton = UI.widgets.button(
dom,
UI.icons.iconBase + scrollForwardIcon,
'Later messages ...'
)
scrollForwardButtonCell.appendChild(scrollForwardButton)
scrollForwardButtonCell.style = 'width:3em; height:3em;'
scrollForwardButton.addEventListener(
'click',
scrollForwardButtonHandler,
false
)
messageTable.extendedForward = false
setScrollForwardButtonIcon()
messageTable.extendedForwards = false
if (!newestFirst) {
// opposite end from the entry field
messageTable.insertBefore(scrollBackButtonTR, messageTable.firstChild) // If not newestFirst
} else {
messageTable.appendChild(scrollBackButtonTR) // newestFirst
}
}
const sts = kb.statementsMatching(null, WF('message'), null, chatDocument)
if (!live && sts.length === 0) {
// not todays
// no need buttomns at the moment
// messageTable.style.visibility = 'collapse' // Hide files with no messages
}
sts.forEach(st => {
addMessage(st.object, messageTable)
})
messageTable.fresh = true
// loadMessageTable(messageTable, chatDocument)
messageTable.fresh = false
return messageTable
} // renderMessageTable
async function addNewTableIfNewDay (now) {
// let now = new Date()
// @@ Remove listener from previous table as it is now static
const newChatDocument = dateFolder.leafDocumentFromDate(now)
if (!newChatDocument.sameTerm(latest.messageTable.chatDocument)) {
// It is a new day
if (liveMessageTable.inputRow) {
liveMessageTable.removeChild(liveMessageTable.inputRow)
delete liveMessageTable.inputRow
}
var oldChatDocument = latest.messageTable.chatDocument
await appendCurrentMessages()
// Adding a link in the document will ping listeners to add the new block too
if (
!kb.holds(
oldChatDocument,
ns.rdfs('seeAlso'),
newChatDocument,
oldChatDocument
)
) {
const sts = [
$rdf.st(
oldChatDocument,
ns.rdfs('seeAlso'),
newChatDocument,
oldChatDocument
)
]
updater.update([], sts, function (ok, body) {
if (!ok) {
alert('Unable to link old message block to new one.' + body)
}
})
}
}
}
/*
function messageCount () {
var n = 0
const tables = div.children
for (let i = 0; i < tables.length; i++) {
n += tables[i].children.length - 1
// console.log(' table length:' + tables[i].children.length)
}
return n
}
*/
/* Add the live message block with entry field for today
*/
async function appendCurrentMessages () {
var now = new Date()
var chatDocument = dateFolder.leafDocumentFromDate(now)
/* Don't actually make the documemnt until a message is sent @@@@@ WHEN SERVER FIXED
* currently server won't patch to a file ina non-existent directory
*/
/*
if (SERVER_MKDIRP_BUG) {
try {
await createIfNotExists(chatDocument)
} catch (e) {
div.appendChild(UI.widgets.errorMessageBlock(
dom, 'Problem accessing chat file: ' + e))
return
}
}
*/
/// ///////////////////////////////////////////////////////////
const messageTable = await createMessageTable(now, true)
div.appendChild(messageTable)
div.refresh = function () {
// only the last messageTable is live
addNewTableIfNewDay(new Date()).then(() => {
syncMessages(chatChannel, messageTable)
desktopNotification(chatChannel)
})
} // The short chat version fors live update in the pane but we do it in the widget
kb.updater.addDownstreamChangeListener(chatDocument, div.refresh) // Live update
liveMessageTable = messageTable
latest.messageTable = liveMessageTable
return messageTable
}
var liveMessageTable
var earliest = { messageTable: null } // Stuff about each end of the loaded days
var latest = { messageTable: null }
var lock = false
async function loadMoreWhereNeeded (event, fixScroll) {
if (lock) return
lock = true
const freeze = !fixScroll
const magicZone = 150
// const top = div.scrollTop
// const bottom = div.scrollHeight - top - div.clientHeight
var done
while (
div.scrollTop < magicZone &&
earliest.messageTable &&
!earliest.messageTable.initial &&
earliest.messageTable.extendBackwards
) {
const scrollBottom = div.scrollHeight - div.scrollTop
console.log('infinite scroll: adding above: top ' + div.scrollTop)
done = await earliest.messageTable.extendBackwards()
if (freeze) {
div.scrollTop = div.scrollHeight - scrollBottom
}
if (fixScroll) fixScroll()
if (done) break
}
while (
options.selectedMessage && // we started in the middle not at the bottom
div.scrollHeight - div.scrollTop - div.clientHeight < magicZone && // we are scrolled right to the bottom
latest.messageTable &&
!latest.messageTable.final && // there is more data to come
latest.messageTable.extendForwards
) {
const scrollTop = div.scrollTop
console.log(
'infinite scroll: adding below: bottom: ' +
(div.scrollHeight - div.scrollTop - div.clientHeight)
)
done = await latest.messageTable.extendForwards() // then add more data on the bottom
if (freeze) {
div.scrollTop = scrollTop // while adding below keep same things in view
}
if (fixScroll) fixScroll()
if (done) break
}
lock = false
}
async function go () {
function yank () {
selectedMessageTable.selectedElement.scrollIntoView({ block: 'center' })
}
// During initial load ONLY keep scroll to selected thing or bottom
function fixScroll () {
if (options.selectedElement) {
options.selectedElement.scrollIntoView({ block: 'center' }) // allign tops or bopttoms
} else {
liveMessageTable.inputRow.scrollIntoView(newestFirst) // allign tops or bopttoms
}
}
var live
if (options.selectedMessage) {
var selectedDocument = options.selectedMessage.doc()
var now = new Date()
var todayDocument = dateFolder.leafDocumentFromDate(now)
live = todayDocument.sameTerm(selectedDocument)
}
if (options.selectedMessage && !live) {
var selectedDate = dateFolder.dateFromLeafDocument(selectedDocument)
var selectedMessageTable = await createMessageTable(selectedDate, live)
div.appendChild(selectedMessageTable)
earliest.messageTable = selectedMessageTable
latest.messageTable = selectedMessageTable
yank()
setTimeout(yank, 1000) // @@ kludge - restore position distubed by other cHANGES
} else {
// Live end
await appendCurrentMessages()
earliest.messageTable = liveMessageTable
latest.messageTable = liveMessageTable
}
await loadMoreWhereNeeded(null, fixScroll)
div.addEventListener('scroll', loadMoreWhereNeeded)
if (options.solo) {
document.body.addEventListener('scroll', loadMoreWhereNeeded)
}
}
go()
return div
}