forked from cory/tildefriends
Cory McWilliams
0ba54c2b7b
git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4157 ed5197a5-7fde-0310-b194-c3ffbd925b24
374 lines
10 KiB
JavaScript
374 lines
10 KiB
JavaScript
import {LitElement, html, unsafeHTML} from './lit-all.min.js';
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import * as tfutils from './tf-utils.js';
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import * as tfrpc from '/static/tfrpc.js';
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import {styles} from './tf-styles.js';
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import Tribute from './tribute.esm.js';
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class TfComposeElement extends LitElement {
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static get properties() {
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return {
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whoami: {type: String},
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users: {type: Object},
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root: {type: String},
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branch: {type: String},
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apps: {type: Object},
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drafts: {type: Object},
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}
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}
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static styles = styles;
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constructor() {
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super();
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this.users = {};
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this.root = undefined;
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this.branch = undefined;
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this.apps = undefined;
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this.drafts = {};
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}
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process_text(text) {
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if (!text) {
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return '';
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}
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/* Update mentions. */
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let draft = this.get_draft();
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let updated = false;
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for (let match of text.matchAll(/\[([^\[]+)]\(([@&%][^\)]+)/g)) {
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let name = match[1];
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let link = match[2];
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let balance = 0;
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let bracket_end = match.index + match[1].length + '[]'.length - 1;
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for (let i = bracket_end; i >= 0; i--) {
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if (text.charAt(i) == ']') {
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balance++;
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} else if (text.charAt(i) == '[') {
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balance--;
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}
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if (balance <= 0) {
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name = text.substring(i + 1, bracket_end);
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break;
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}
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}
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if (!draft.mentions) {
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draft.mentions = {};
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}
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if (!draft.mentions[link]) {
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draft.mentions[link] = {
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link: link,
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}
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}
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draft.mentions[link].name = name.startsWith('@') ? name.substring(1) : name;
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updated = true;
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}
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if (updated) {
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this.requestUpdate();
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}
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return tfutils.markdown(text);
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}
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input(event) {
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let edit = this.renderRoot.getElementById('edit');
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let preview = this.renderRoot.getElementById('preview');
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preview.innerHTML = this.process_text(edit.value);
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let content_warning = this.renderRoot.getElementById('content_warning');
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let content_warning_preview = this.renderRoot.getElementById('content_warning_preview');
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if (content_warning && content_warning_preview) {
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content_warning_preview.innerText = content_warning.value;
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}
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}
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notify(draft) {
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this.dispatchEvent(new CustomEvent('tf-draft', {
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bubbles: true,
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composed: true,
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detail: {
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id: this.branch,
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draft: draft
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},
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}));
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}
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change() {
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let draft = this.get_draft();
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draft.text = this.renderRoot.getElementById('edit')?.value;
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draft.content_warning = this.renderRoot.getElementById('content_warning')?.value;
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this.notify(draft);
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}
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convert_to_format(buffer, type, mime_type) {
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return new Promise(function(resolve, reject) {
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let img = new Image();
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img.onload = function() {
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let canvas = document.createElement('canvas');
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let width_scale = Math.min(img.width, 1024) / img.width;
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let height_scale = Math.min(img.height, 1024) / img.height;
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let scale = Math.min(width_scale, height_scale);
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canvas.width = img.width * scale;
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canvas.height = img.height * scale;
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let context = canvas.getContext('2d');
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context.drawImage(img, 0, 0, canvas.width, canvas.height);
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let data_url = canvas.toDataURL(mime_type);
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let result = atob(data_url.split(',')[1]).split('').map(x => x.charCodeAt(0));
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resolve(result);
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}
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img.onerror = function(event) {
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reject(new Error('Failed to load image.'));
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};
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let raw = Array.from(new Uint8Array(buffer)).map(b => String.fromCharCode(b)).join('');
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let original = `data:${type};base64,${btoa(raw)}`;
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img.src = original;
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});
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}
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async add_file(file) {
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try {
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let draft = this.get_draft();
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let self = this;
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let buffer = await file.arrayBuffer();
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let type = file.type;
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if (type.startsWith('image/')) {
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let best_buffer;
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let best_type;
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for (let format of ['image/png', 'image/jpeg', 'image/webp']) {
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let test_buffer = await self.convert_to_format(buffer, file.type, format);
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if (!best_buffer || test_buffer.length < best_buffer.length) {
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best_buffer = test_buffer;
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best_type = format;
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}
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}
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buffer = best_buffer;
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type = best_type;
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} else {
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buffer = Array.from(new Uint8Array(buffer));
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}
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let id = await tfrpc.rpc.store_blob(buffer);
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let name = type.split('/')[0] + ':' + file.name;
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if (!draft.mentions) {
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draft.mentions = {};
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}
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draft.mentions[id] = {
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link: id,
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name: name,
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type: type,
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size: buffer.length ?? buffer.byteLength,
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};
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let edit = self.renderRoot.getElementById('edit');
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edit.value += `\n`;
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self.change();
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self.input();
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} catch(e) {
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alert(e?.message);
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}
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}
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paste(event) {
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let self = this;
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for (let item of event.clipboardData.items) {
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if (item.type?.startsWith('image/')) {
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let file = item.getAsFile();
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if (!file) {
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continue;
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}
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self.add_file(file);
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break;
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}
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}
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}
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submit() {
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let self = this;
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let draft = this.get_draft();
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let edit = this.renderRoot.getElementById('edit');
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let message = {
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type: 'post',
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text: edit.value,
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};
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if (this.root || this.branch) {
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message.root = this.root;
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message.branch = this.branch;
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}
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if (Object.values(draft.mentions || {}).length) {
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message.mentions = Object.values(draft.mentions);
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}
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if (draft.content_warning !== undefined) {
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message.contentWarning = draft.content_warning;
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}
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console.log('Would post:', message);
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tfrpc.rpc.appendMessage(this.whoami, message).then(function() {
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edit.value = '';
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self.change();
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self.notify(undefined);
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self.requestUpdate();
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}).catch(function(error) {
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alert(error.message);
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});
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}
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discard() {
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let edit = this.renderRoot.getElementById('edit');
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edit.value = '';
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this.change();
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let preview = this.renderRoot.getElementById('preview');
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preview.innerHTML = '';
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this.notify(undefined);
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}
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attach() {
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let self = this;
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let edit = this.renderRoot.getElementById('edit');
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let input = document.createElement('input');
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input.type = 'file';
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input.onchange = function(event) {
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let file = event.target.files[0];
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self.add_file(file);
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};
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input.click();
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}
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firstUpdated() {
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let tribute = new Tribute({
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values: Object.entries(this.users).map(x => ({key: x[1].name, value: x[0]})),
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selectTemplate: function(item) {
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return `[@${item.original.key}](${item.original.value})`;
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},
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});
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tribute.attach(this.renderRoot.getElementById('edit'));
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}
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updated() {
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super.updated();
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let edit = this.renderRoot.getElementById('edit');
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if (this.last_updated_text !== edit.value) {
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let preview = this.renderRoot.getElementById('preview');
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preview.innerHTML = this.process_text(edit.value);
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this.last_updated_text = edit.value;
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}
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}
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remove_mention(id) {
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let draft = this.get_draft();
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delete draft.mentions[id];
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this.notify(draft);
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this.requestUpdate();
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}
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render_mention(mention) {
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let self = this;
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return html`
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<div>
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<pre style="white-space: pre-wrap">${JSON.stringify(mention, null, 2)}</pre>
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<input type="button" value="x" @click=${() => self.remove_mention(mention.link)}></input>
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</div>`;
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}
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render_attach_app() {
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let self = this;
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async function attach_selected_app() {
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let name = self.renderRoot.getElementById('select').value;
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let id = self.apps[name];
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let mentions = {};
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mentions[id] = {
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name: name,
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link: id,
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type: 'application/tildefriends',
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};
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if (name && id) {
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let app = JSON.parse(await tfrpc.rpc.get_blob(id));
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for (let entry of Object.entries(app.files)) {
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mentions[entry[1]] = {
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name: entry[0],
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link: entry[1],
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};
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}
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}
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let draft = this.get_draft();
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draft.mentions = Object.assign(draft.mentions || {}, mentions);
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this.requestUpdate();
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this.notify(draft);
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this.apps = null;
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}
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if (this.apps) {
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return html`
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<div>
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<select id="select">
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${Object.keys(self.apps).map(app => html`<option value=${app}>${app}</option>`)}
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</select>
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<input type="button" value="Attach" @click=${attach_selected_app}></input>
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<input type="button" value="Cancel" @click=${() => this.apps = null}></input>
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</div>
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`;
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}
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}
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render_attach_app_button() {
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async function attach_app() {
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this.apps = await tfrpc.rpc.apps();
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}
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if (!this.apps) {
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return html`<input type="button" value="Attach App" @click=${attach_app}></input>`
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} else {
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return html`<input type="button" value="Discard App" @click=${() => this.apps = null}></input>`
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}
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}
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set_content_warning(value) {
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let draft = this.get_draft();
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draft.content_warning = value;
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this.notify(draft);
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this.requestUpdate();
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}
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render_content_warning() {
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let self = this;
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let draft = this.get_draft();
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if (draft.content_warning !== undefined) {
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return html`
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<div>
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<input type="checkbox" id="cw" @change=${() => self.set_content_warning(undefined)} checked></input>
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<label for="cw">CW</label>
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<input type="text" id="content_warning" @input=${this.input} @change=${this.change} value=${draft.content_warning}></input>
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</div>
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`;
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} else {
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return html`
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<input type="checkbox" id="cw" @change=${() => self.set_content_warning('')}></input>
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<label for="cw">CW</label>
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`;
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}
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}
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get_draft() {
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return this.drafts[this.branch || ''] || {};
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}
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render() {
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let self = this;
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let draft = self.get_draft();
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let content_warning =
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draft.content_warning !== undefined ?
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html`<div id="content_warning_preview" class="content_warning">${draft.content_warning}</div>` :
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undefined;
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let result = html`
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<div style="display: flex; flex-direction: row; width: 100%">
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<textarea id="edit" @input=${this.input} @change=${this.change} @paste=${this.paste} style="flex: 1 0 50%">${draft.text}</textarea>
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<div style="flex: 1 0 50%">
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${content_warning}
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<div id="preview"></div>
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</div>
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</div>
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${Object.values(draft.mentions || {}).map(x => self.render_mention(x))}
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${this.render_content_warning()}
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${this.render_attach_app()}
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<input type="button" value="Submit" @click=${this.submit}></input>
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<input type="button" value="Attach" @click=${this.attach}></input>
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${this.render_attach_app_button()}
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<input type="button" value="Discard" @click=${this.discard}></input>
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`;
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return result;
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}
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}
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customElements.define('tf-compose', TfComposeElement); |