Terms&Conditions (#18) WIP:

* Converse module to display terms.
* Prosody module to send terms.

conversejs/custom/plugins/terms/index.js

@@ -0,0 +1,48 @@
+// SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
+//
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { converse, api } from '../../../src/headless/core.js'
+import './components/muc-terms.js'
+
+const { sizzle } = converse.env
+
+converse.plugins.add('livechat-converse-terms', {
+  dependencies: ['converse-muc'],
+  initialize () {
+    api.listen.on('parseMUCMessage', (stanza, attrs) => {
+      const livechatTerms = sizzle('x-livechat-terms', stanza)
+      if (!livechatTerms.length) {
+        return attrs
+      }
+      return Object.assign(
+        attrs,
+        {
+          x_livechat_terms: livechatTerms[0].getAttribute('type')
+        }
+      )
+    })
+  },
+  overrides: {
+    ChatRoom: {
+      onMessage: function onMessage (attrs) {
+        if (!attrs.x_livechat_terms) {
+          return this.__super__.onMessage(attrs)
+        }
+        // We received a x-livechat-terms message, we don't forward it to standard onMessage,
+        // but we just update the room attribute.
+        const type = attrs.x_livechat_terms
+        if (type !== 'global' && type !== 'muc') {
+          console.error('Invalid x-livechat-terms type: ', type)
+          return
+        }
+        // console.info('Received a x-livechat-terms message', attrs)
+        const options = {}
+        options['x_livechat_terms_' + type] = attrs
+        this.set(options)
+        // this will be displayed by the livechat-converse-muc-terms custom element,
+        // which is inserted in the DOM by the muc.js template overload.
+      }
+    }
+  }
+})