Builtin Prosody: new settings to choose how long the room's content is archived, and if it should be archived by default.

server/lib/diagnostic/prosody.ts

@@ -36,6 +36,20 @@ export async function diagProsody (test: string, options: RegisterServerOptions)
 
     result.messages.push(`Prosody rooms will be grouped by '${wantedConfig.roomType}'.`)
 
+    if (wantedConfig.logByDefault) {
+      result.messages.push('By default, room content will be archived.')
+    } else {
+      result.messages.push('By default, room content will not be archived.')
+    }
+
+    if ('error' in wantedConfig.logExpiration) {
+      result.messages.push({
+        level: 'error',
+        message: 'Errors: Room logs expiration value is not valid. Using the default value.'
+      })
+    }
+    result.messages.push(`Room content will be saved for '${wantedConfig.logExpiration.value}'`)
+
     await fs.promises.access(filePath, fs.constants.R_OK) // throw an error if file does not exist.
     result.messages.push(`The prosody configuration file (${filePath}) exists`)
     const actualContent = await fs.promises.readFile(filePath, {