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| 1 | +import { createAction } from 'common/redux'; |
| 2 | +import { chatRenderer } from './chat/renderer'; |
| 3 | +import { loadSettings, updateSettings } from './settings/actions'; |
| 4 | +import { selectSettings } from './settings/selectors'; |
| 5 | + |
| 6 | +const sendWSNotice = (message, small = false) => { |
| 7 | + chatRenderer.processBatch([ |
| 8 | + { |
| 9 | + html: small |
| 10 | + ? `<span class='adminsay'>${message}</span>` |
| 11 | + : `<div class="boxed_message"><center><span class='alertwarning'>${message}</span></center></div>`, |
| 12 | + }, |
| 13 | + ]); |
| 14 | +}; |
| 15 | + |
| 16 | +export const reconnectWebsocket = createAction('websocket/reconnect'); |
| 17 | +export const disconnectWebsocket = createAction('websocket/disconnect'); |
| 18 | + |
| 19 | +// Websocket close codes |
| 20 | +const WEBSOCKET_DISABLED = 4555; |
| 21 | +const WEBSOCKET_REATTEMPT = 4556; |
| 22 | + |
| 23 | +export const websocketMiddleware = (store) => { |
| 24 | + let websocket: WebSocket | null = null; |
| 25 | + |
| 26 | + const setupWebsocket = (store) => { |
| 27 | + const { websocketEnabled, websocketServer } = selectSettings( |
| 28 | + store.getState(), |
| 29 | + ); |
| 30 | + if (!websocketEnabled) { |
| 31 | + websocket?.close(WEBSOCKET_REATTEMPT); |
| 32 | + return; |
| 33 | + } |
| 34 | + |
| 35 | + websocket?.close(WEBSOCKET_REATTEMPT); |
| 36 | + |
| 37 | + try { |
| 38 | + websocket = new WebSocket(`ws://${websocketServer}`); |
| 39 | + } catch (e) { |
| 40 | + if (e.name === 'SyntaxError') { |
| 41 | + sendWSNotice( |
| 42 | + `Error creating websocket: Invalid address! Make sure you're following the placeholder. Example: <code>localhost:1234</code>`, |
| 43 | + ); |
| 44 | + return; |
| 45 | + } |
| 46 | + sendWSNotice(`Error creating websocket: ${e.name} - ${e.message}`); |
| 47 | + return; |
| 48 | + } |
| 49 | + |
| 50 | + websocket.addEventListener('open', () => { |
| 51 | + sendWSNotice('Websocket connected!', true); |
| 52 | + }); |
| 53 | + |
| 54 | + websocket.addEventListener('close', function closeEventThing(ev) { |
| 55 | + const { websocketEnabled } = selectSettings(store.getState()); |
| 56 | + if (!websocketEnabled) { |
| 57 | + // Doing this because eitherwise it 'close' will get called |
| 58 | + // thousands of times per second if the connection wasn't closed properly. |
| 59 | + // I don't know WHY it does that but it just does. |
| 60 | + ev.target?.removeEventListener('close', closeEventThing); |
| 61 | + websocket?.removeEventListener('close', closeEventThing); |
| 62 | + return; |
| 63 | + } |
| 64 | + if (ev.code !== WEBSOCKET_DISABLED && ev.code !== WEBSOCKET_REATTEMPT) { |
| 65 | + sendWSNotice( |
| 66 | + `Websocket disconnected! Code: ${ev.code} Reason: ${ev.reason || 'None provided'}`, |
| 67 | + ); |
| 68 | + } |
| 69 | + }); |
| 70 | + |
| 71 | + websocket.addEventListener('error', () => { |
| 72 | + // Really don't think we should do anything here. |
| 73 | + // setTimeout(() => setupWebsocket(store), 2000); |
| 74 | + }); |
| 75 | + }; |
| 76 | + |
| 77 | + setTimeout(() => setupWebsocket(store)); |
| 78 | + |
| 79 | + return (next) => (action) => { |
| 80 | + const { type, payload } = action as { |
| 81 | + type: string; |
| 82 | + payload: { |
| 83 | + websocketEnabled: boolean; |
| 84 | + websocketServer: string; |
| 85 | + }; |
| 86 | + }; |
| 87 | + if (!payload) return next(action); |
| 88 | + if (type === updateSettings.type || type === loadSettings.type) { |
| 89 | + if (typeof payload?.websocketEnabled === 'undefined') { |
| 90 | + store.dispatch( |
| 91 | + updateSettings({ |
| 92 | + websocketEnabled: false, |
| 93 | + }), |
| 94 | + ); |
| 95 | + return next(action); |
| 96 | + } |
| 97 | + if (!payload.websocketEnabled) { |
| 98 | + websocket?.close(WEBSOCKET_DISABLED); |
| 99 | + websocket = null; |
| 100 | + } else if ( |
| 101 | + !websocket || |
| 102 | + websocket.url !== payload.websocketServer || |
| 103 | + (payload.websocketEnabled && |
| 104 | + (!websocket || websocket.readyState !== websocket.OPEN)) |
| 105 | + ) { |
| 106 | + websocket?.close(WEBSOCKET_REATTEMPT, 'Websocket settings changed'); |
| 107 | + sendWSNotice('Websocket enabled.', true); |
| 108 | + setupWebsocket(store); |
| 109 | + } |
| 110 | + return next(action); |
| 111 | + } |
| 112 | + |
| 113 | + if (type === reconnectWebsocket.type) { |
| 114 | + const settings = selectSettings(store.getState()); |
| 115 | + if (settings.websocketEnabled) setupWebsocket(store); |
| 116 | + return next(action); |
| 117 | + } |
| 118 | + |
| 119 | + if (type === disconnectWebsocket.type) { |
| 120 | + websocket?.close(WEBSOCKET_DISABLED); |
| 121 | + websocket = null; |
| 122 | + sendWSNotice('Websocket forcefully disconnected.', true); |
| 123 | + } |
| 124 | + |
| 125 | + websocket && |
| 126 | + websocket.readyState === websocket.OPEN && |
| 127 | + websocket?.send( |
| 128 | + JSON.stringify({ |
| 129 | + type, |
| 130 | + payload, |
| 131 | + }), |
| 132 | + ); |
| 133 | + return next(action); |
| 134 | + }; |
| 135 | +}; |
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