Add translation basics

data/settings.json

@@ -8,6 +8,8 @@
     "cache_path": "./data/cache",
     "prefix": "!",
     "ratelimit": 10,
+    "libretranslate_api": "https://translate.argosopentech.com/",
+    "libretranslate_api_key": "",
     "admin_command_list": [
         "shrug",
         "emoji_size",

main.py

@@ -17,6 +17,11 @@ import datetime # Ratelimiting
 # External dependencies
 import nio # Matrix library, matirx-nio[e2e]
 from PIL import Image # Resizing images, pillow
+try:
+    from libretranslatepy import LibreTranslateAPI # Translation functionality
+    translate_available = True
+except Exception:
+    translate_available = False
 
 # Set the settings path
 settings_path = "./data/settings.json"
@@ -64,6 +69,19 @@ def filter_xkcd_title(title):
             filtered_title += char
     return filtered_title
 
+# Takes in a country (US, CA, AU), outputs the "flag emoji"/regional indicator emojis
+def flag_emoji(country):
+    regional_indicator_offset = 127397
+    return chr(ord(country.upper()[0]) + regional_indicator_offset) + chr(ord(country.upper()[1]) + regional_indicator_offset)
+
+# Takes in a flag emoji, outputs as text instead of regional indicators
+def flag_decode(emoji):
+    regional_indicator_offset = 127397
+    try:
+        return chr(ord(emoji[0]) - regional_indicator_offset) + chr(ord(emoji[1]) - regional_indicator_offset)
+    except Exception:
+        return None
+
 # Grab a list of all emojis on disk
 def list_emojis():
     global settings
@@ -293,6 +311,50 @@ async def aw(args, room, event):
     else:
         return await send_text(room.room_id, "Please provide a search term.")
 
+async def unknown_callback(room: nio.MatrixRoom, event: nio.UnknownEvent) -> None:
+    if event.type == "m.reaction":
+        # Get the ID of the event this was a reaction to
+        relation_dict = event.source.get("content", {}).get("m.relates_to", {})
+
+        reacted_to = relation_dict.get("event_id")
+        if reacted_to and relation_dict.get("rel_type") == "m.annotation":
+            await reaction_callback(room, event, reacted_to)
+            return
+
+async def reaction_callback(room: nio.MatrixRoom, event: nio.UnknownEvent, reacted_to_id: str) -> None:
+    global client, settings, translate_available
+    if settings["debug"]:
+        print(f"Got reaction in {room.room_id} from {event.sender}.")
+
+    # Get the original event that was reacted to
+    event_response = await client.room_get_event(room.room_id, reacted_to_id)
+    if isinstance(event_response, nio.RoomGetEventError):
+        return
+    reacted_to_event = event_response.event
+
+    # Only acknowledge reactions that we sent
+    if event.sender != client.user_id:
+        return
+
+    # Get the reaction
+    reaction_content = (event.source.get("content", {}).get("m.relates_to", {}).get("key"))
+
+    if translate_available and len(reaction_content) == 2:
+        if flag_decode(reaction_content):
+            country = flag_decode(reaction_content).lower()
+            if country == "us" or country == "gb":
+                # Translate from auto to English
+                from_lang = "auto"
+            else:
+                # Translate from lang to English
+                from_lang = country
+            lt = LibreTranslateAPI(settings["libretranslate_api"], settings["libretranslate_api_key"] if "libretranslate_api_key" in settings.keys() and settings["libretranslate_api_key"] else None)
+            if from_lang not in [x["code"] for x in lt.languages()] and from_lang != "auto":
+                return await send_text(room.room_id, "Language " + from_lang + " is not supported!")
+            translated = lt.translate(reacted_to_event.body, from_lang, "en")
+            lang = lt.detect(reacted_to_event.body)[0]["language"].upper() if from_lang == "auto" else from_lang.upper()
+            return await send_text(room.room_id, "Translated from " + lang + " (" + flag_emoji("US" if lang == "EN" else lang) + "):\n" + translated)
+
 async def message_callback(room: nio.MatrixRoom, event: nio.RoomMessageText) -> None:
     global client, settings, emojis
     if settings["debug"]:
@@ -419,6 +481,7 @@ async def main() -> None:
     print(f"Logged in as: {client.user_id} with device {client.device_id}")
     await client.sync(timeout=60000, full_state=True) # Ignore any messages sent before now.
     client.add_event_callback(message_callback, nio.RoomMessageText)
+    client.add_event_callback(unknown_callback, nio.UnknownEvent)
     client.add_event_callback(decryption_failure_callback, (nio.MegolmEvent,))
     if client.should_upload_keys:
         await client.keys_upload()