Merge pull request #233 from Aciid/wikipedia

New module Wikipedia

README.md

@@ -708,6 +708,14 @@ including version, how many users are connected, and ping time.
 * !mumble                                 - Show info about the configured mumble server
 - !mumble (set|setserver) [host] ([port]) - Set the configured mumble server
 
+### Wikipedia
+
+Searches Wikipedia for a given query and returns the first result summary and link.
+
+#### Usage
+
+* !wikipedia [query] - Search Wikipedia for query
+
 ## Bot setup
 
 * Create a Matrix user

modules/wikipedia.py

@@ -0,0 +1,64 @@
+import re
+
+import requests
+
+from modules.common.module import BotModule
+
+# This module searches wikipedia for query, returns page summary and link.
+class MatrixModule(BotModule):
+    def __init__(self, name):
+        super().__init__(name)
+        self.api_url = 'https://en.wikipedia.org/w/api.php'
+
+    async def matrix_message(self, bot, room, event):
+        args = event.body.split()
+
+        if len(args) > 1:
+            query = event.body[len(args[0])+1:]
+            try:
+                response = requests.get(self.api_url, params={
+                    'action': 'query',
+                    'prop': 'extracts',
+                    'exintro': True,
+                    'explaintext': True,
+                    'titles': query,
+                    'format': 'json',
+                    'formatversion': 2
+                })
+
+                response.raise_for_status()
+                data = response.json()
+                if 'query' not in data or 'pages' not in data['query'] or len(data['query']['pages']) == 0:
+                    await bot.send_text(room, 'No results found')
+                    return
+
+                page = data['query']['pages'][0]
+
+                if 'extract' not in page:
+                    await bot.send_text(room, 'No results found')
+                    return
+
+                # Remove all html tags
+                extract = re.sub('<[^<]+?>', '', page['extract'])
+                # Remove any multiple spaces
+                extract = re.sub(' +', ' ', extract)
+                # Remove any new lines
+                extract = re.sub('', '', extract)
+                # Remove any tabs
+                extract = re.sub('\t', '', extract)
+
+                # Truncate to 500 chars
+                extract = extract[:500]
+
+                # Add a link to the page
+                extract = extract + '\nhttps://en.wikipedia.org/?curid=' + str(page['pageid'])
+
+                await bot.send_text(room, extract)
+                return
+            except Exception as exc:
+                await bot.send_text(room, str(exc))
+        else:
+            await bot.send_text(room, 'Usage: !wikipedia <query>')
+
+    def help(self):
+        return ('Wikipedia bot')