From f11fec7c97b9145f6bb35ba44288627a0150d433 Mon Sep 17 00:00:00 2001
From: John Livingston <git@john-livingston.fr>
Date: Sun, 2 May 2021 16:16:19 +0200
Subject: [PATCH] Diagnostic: check prosody version.

---
 client/settings.ts               | 21 +++++++++++++++++++--
 server/lib/diagnostic/prosody.ts | 20 ++++++++++++++++++++
 server/lib/diagnostic/utils.ts   |  6 +++++-
 3 files changed, 44 insertions(+), 3 deletions(-)

diff --git a/client/settings.ts b/client/settings.ts
index 8e3d3b87..ee43418a 100644
--- a/client/settings.ts
+++ b/client/settings.ts
@@ -1,6 +1,11 @@
+interface MessageWithLevel {
+  level: 'info' | 'warning' | 'error'
+  message: string
+}
+
 interface Result {
   label?: string
-  messages: string[]
+  messages: Array<MessageWithLevel | string>
   debug?: Array<{
     title: string
     message: string
@@ -48,7 +53,19 @@ function launchTests (): void {
       const messageUl = document.createElement('ul')
       for (let i = 0; i < result.messages.length; i++) {
         const messageLi = document.createElement('li')
-        messageLi.textContent = result.messages[i]
+        const message = result.messages[i]
+        if (typeof message === 'string') {
+          messageLi.textContent = message
+        } else {
+          const messageSpan = document.createElement('span')
+          if (message.level === 'warning') {
+            messageSpan.style.color = 'orange'
+          } else if (message.level === 'error') {
+            messageSpan.style.color = 'red'
+          }
+          messageSpan.textContent = message.message
+          messageLi.append(messageSpan)
+        }
         messageUl.append(messageLi)
       }
       li.append(messageUl)
diff --git a/server/lib/diagnostic/prosody.ts b/server/lib/diagnostic/prosody.ts
index badd15bd..87db55d3 100644
--- a/server/lib/diagnostic/prosody.ts
+++ b/server/lib/diagnostic/prosody.ts
@@ -67,6 +67,26 @@ export async function diagProsody (test: string, options: RegisterServerOptions)
     return result
   }
 
+  const versionMatches = about.match(/^Prosody\s*(\d+)\.(\d+)\.(\d+)\s*$/mi)
+  if (!versionMatches) {
+    result.messages.push({
+      level: 'error',
+      message: 'Errors: cant find prosody version.'
+    })
+    return result
+  } else {
+    const major = versionMatches[1]
+    const minor = versionMatches[2]
+    const patch = versionMatches[3]
+    result.messages.push(`Prosody version is ${major}.${minor}.${patch}`)
+    if (major !== '0' && minor !== '11') {
+      result.messages.push({
+        level: parseInt(minor) < 11 ? 'error' : 'warning',
+        message: 'Warning: recommended Prosody version is 0.11.x'
+      })
+    }
+  }
+
   result.ok = true
   return result
 }
diff --git a/server/lib/diagnostic/utils.ts b/server/lib/diagnostic/utils.ts
index 333d5550..a8d7a350 100644
--- a/server/lib/diagnostic/utils.ts
+++ b/server/lib/diagnostic/utils.ts
@@ -1,8 +1,12 @@
 type nextValue = 'backend' | 'webchat-video' | 'webchat-type' | 'prosody' | 'converse' | 'use-uri'
 
+interface MessageWithLevel {
+  level: 'info' | 'warning' | 'error'
+  message: string
+}
 export interface TestResult {
   label?: string
-  messages: string[]
+  messages: Array<string | MessageWithLevel>
   debug: Array<{
     title: string
     message: string