From 66b94d2b9d41528e8a3d795f139266c35534a486 Mon Sep 17 00:00:00 2001
From: Klemek <klemek@outlook.fr>
Date: Tue, 16 Mar 2021 15:38:16 +0100
Subject: [PATCH] multithread

---
 src/logs/guild_logs.py | 85 ++++++++++++++++++++++++++++--------------
 1 file changed, 58 insertions(+), 27 deletions(-)

diff --git a/src/logs/guild_logs.py b/src/logs/guild_logs.py
index 135e3e5..5250a62 100644
--- a/src/logs/guild_logs.py
+++ b/src/logs/guild_logs.py
@@ -5,6 +5,7 @@ import json
 import gzip
 from datetime import datetime
 import logging
+import asyncio
 
 
 from . import ChannelLogs
@@ -20,6 +21,30 @@ ALREADY_RUNNING = -100
 CANCELLED = -200
 
 
+class Worker:
+    def __init__(self, channel_log: ChannelLogs, channel: discord.TextChannel):
+        self.channel_log = channel_log
+        self.channel = channel
+        self.start_msg = len(channel_log.messages)
+        self.total_msg = self.start_msg
+        self.queried_msg = 0
+        self.done = False
+        self.cancelled = False
+        self.loop = asyncio.get_event_loop()
+
+    def start(self):
+        asyncio.run_coroutine_threadsafe(self.process(), self.loop)
+
+    async def process(self):
+        async for count, done in self.channel_log.load(self.channel):
+            if count > 0:
+                self.queried_msg = count - self.start_msg
+                self.total_msg = count
+            self.done = done
+            if self.cancelled:
+                return
+
+
 class GuildLogs:
     def __init__(self, guild: discord.Guild):
         self.guild = guild
@@ -121,37 +146,43 @@ class GuildLogs:
             max_chan = len(target_channels)
             if self.check_cancelled():
                 return CANCELLED, 0
-            await code_message(
-                progress,
-                f"Reading new history...\n0 messages in 0/{max_chan:,} channels\n(this might take a while)",
-            )
+            workers = []
             for channel in target_channels:
                 if channel.id not in self.channels or fresh:
                     loading_new += 1
                     self.channels[channel.id] = ChannelLogs(channel)
-                start_msg = len(self.channels[channel.id].messages)
-                count = 0
-                async for count, done in self.channels[channel.id].load(channel):
-                    if count > 0:
-                        tmp_queried_msg = queried_msg + count - start_msg
-                        tmp_msg = total_msg + count
-                        warning_msg = "(this might take a while)"
-                        if len(target_channels) > 5 and loading_new > 5:
-                            warning_msg = "(most channels are new, this might take a looong while)"
-                        elif loading_new > 0:
-                            warning_msg = (
-                                "(some channels are new, this might take a long while)"
-                            )
-                        if self.check_cancelled():
-                            return CANCELLED, 0
-                        await code_message(
-                            progress,
-                            f"Reading new history...\n{tmp_msg:,} messages in {total_chan + 1:,}/{max_chan:,} channels ({round(tmp_queried_msg/deltas(t0)):,}m/s)\n{warning_msg}",
-                        )
-                        if done:
-                            total_chan += 1
-                total_msg += len(self.channels[channel.id].messages)
-                queried_msg += count - start_msg
+                workers += [Worker(self.channels[channel.id], channel)]
+            warning_msg = "(this might take a while)"
+            if len(target_channels) > 5 and loading_new > 5:
+                warning_msg = "(most channels are new, this might take a looong while)"
+            elif loading_new > 0:
+                warning_msg = "(some channels are new, this might take a long while)"
+            await code_message(
+                progress,
+                f"Reading new history...\n0 messages in 0/{max_chan:,} channels\n{warning_msg}",
+            )
+            for worker in workers:
+                worker.start()
+            done = False
+            while not done:
+                if self.check_cancelled():
+                    for worker in workers:
+                        worker.cancelled = True
+                    return CANCELLED, 0
+
+                await asyncio.sleep(0.5)
+
+                total_chan = sum([worker.done for worker in workers])
+                queried_msg = sum([worker.queried_msg for worker in workers])
+                total_msg = sum([worker.total_msg for worker in workers])
+
+                if total_chan == max_chan:
+                    done = True
+
+                await code_message(
+                    progress,
+                    f"Reading new history...\n{total_msg:,} messages in {total_chan:,}/{max_chan:,} channels ({round(queried_msg/deltas(t0)):,}m/s)\n{warning_msg}",
+                )
             logging.info(
                 f"log {self.guild.id} > queried in {delta(t0):,}ms -> {queried_msg / deltas(t0):,.3f} m/s"
             )