From 63c10720c6087950cf5e2ebae0d7939214426b5f Mon Sep 17 00:00:00 2001
From: kalzu rekku <kalzu@tower.kotiverkko2>
Date: Sun, 11 Feb 2024 09:05:43 +0200
Subject: [PATCH] Foobar WTF

---
 foobar/kiss.py    |  49 +++++++++++++++
 ircthing.py       |  64 +++++++++-----------
 ircthing_core.py  | 148 +++++++++++++++++++++++++---------------------
 ircthing_utils.py |  60 +++++++++++++++----
 4 files changed, 208 insertions(+), 113 deletions(-)
 create mode 100644 foobar/kiss.py

diff --git a/foobar/kiss.py b/foobar/kiss.py
new file mode 100644
index 0000000..a4dc3d0
--- /dev/null
+++ b/foobar/kiss.py
@@ -0,0 +1,49 @@
+import queue
+import time
+import threading
+
+def main():
+    print("Hello There")
+
+    que = queue.Queue()
+    event = threading.Event()
+
+    #input(que)
+    input_thread = threading.Thread(target=input, args=(que,event))
+    input_thread.daemon = True
+    input_thread.start()
+
+    #output(que)
+    output_thread = threading.Thread(target=output, args=(que,event))
+    output_thread.daemon = True
+    output_thread.start()
+
+    for num in range(21):
+        print(f"wait till full: {num}/20", end='\r')
+        time.sleep(0.5)
+    print("\nDone!")
+    event.set()
+
+def input(que, event):
+    loop = 0
+    while not event:
+        message = f"{time.time()} | Hi! {loop}"
+        que.put(message)
+        loop = loop + 1
+        time.sleep(1)
+
+def output(que, event):
+    file = '/tmp/test_out'
+    with open(file, 'a') as out_file:
+        while not event:
+            message = que.get()
+            out_file.write(f"{message}\r\n")
+            out_file.flush()
+            time.sleep(1)
+        out_file.close()
+
+
+if __name__ == "__main__":
+    main()
+    print("Bye now!")
+    exit(0)
diff --git a/ircthing.py b/ircthing.py
index 82e36bf..8b23fb1 100644
--- a/ircthing.py
+++ b/ircthing.py
@@ -1,28 +1,43 @@
+"""
+My attempt to mimic Suckless.org's ii (irc it) software
+"""
+import sys
+import time
+import multiprocessing
 from ircthing_core import irc_router, connect_to_irc_server
 from ircthing_utils import read_config, cli_args, base_path
-import time
-import os
-import multiprocessing
 
 Processes = {}
 Stop_Toggle = multiprocessing.Event()
 
+
 def clean_exit():
+    """
+    Sets the Stop_Toggle event to signal clean exit.
+    """
     Stop_Toggle.set()
 
+
 def main():
+    """
+    Main function to initialize irc connections specified on the configuration file.
+
+    This will run each irc server connection in invidual sub process.
+    Hold the process handlers on list.
+    Kill them with Stop_Toggle.
+    """
     root_path = base_path()
 
     # Get configuration file path if given
-    config_path = 'config.ini'
+    config_path = "config.ini"
     argument = cli_args()
     if argument:
         config_path = argument
-    # Read configuration 
+    # Read configuration
     network_configs = read_config(config_path)
 
     ## Get irc socket for each network in configuration
-    ## Start thread for each socket 
+    ## Start thread for each socket
     for network in network_configs:
         net_name = network["net_name"]
         server = network["server"]
@@ -31,42 +46,21 @@ def main():
         password = network["password"]
 
         print(f"{time.time()} | Found configs for {net_name} network.")
-        irc_socket, fifo_files, network_dir = connect_to_irc_server(root_path, net_name, server, port, nickname, password)
+        irc_socket, fifo_files, network_dir = connect_to_irc_server(
+            root_path, net_name, server, port, nickname, password
+        )
 
-        router_instance = irc_router(fifo_files, irc_socket, server, nickname, network_dir)
+        router_instance = irc_router(
+            fifo_files, irc_socket, server, nickname, network_dir
+        )
         Processes[net_name] = multiprocessing.Process(target=router_instance.start)
         Processes[net_name].daemon = True
         Processes[net_name].start()
 
-    main_handle(root_path)
-
+    # Wait for all the sub processes to end.
     for process in Processes.values():
         process.join()
 
-def main_handle(path):
-    input = f"{path}/in"
-    output = f"{path}/out"
-    os.mkfifo(input)
-    os.mkfifo(output)
-    while True:
-        line = read_input(input)
-        write_output(output, line)
-
-def read_input(file):
-    with open(file, 'r') as input:
-        line = input.readline().strip()
-        if not line:
-            return
-        if line == "exit":
-            clean_exit()
-        return line
-
-def write_output(file, line):
-    with open(file, 'a') as output:
-        output.write(f"{time.time()} | {line}\r\n")
-        output.flush()
-        output.close()
-
 
 if __name__ == "__main__":
     print(f"{time.time()} | Lets start!")
@@ -77,4 +71,4 @@ if __name__ == "__main__":
     finally:
         clean_exit()
         print(f"{time.time()} | Bye!")
-        exit(0)
+        sys.exit(0)
diff --git a/ircthing_core.py b/ircthing_core.py
index 15f885c..eb34c43 100644
--- a/ircthing_core.py
+++ b/ircthing_core.py
@@ -1,9 +1,10 @@
 import time
 import re
-import asyncio
 import socket
 import os
 from ircthing_utils import make_files
+from threading import Thread, Event
+
 
 def connect_to_irc_server(
     base_path,
@@ -35,6 +36,7 @@ def connect_to_irc_server(
 
 
 class irc_router:
+
     def __init__(self, fifo_files, irc_socket, server, nickname, network_dir):
         self.fifo_files = fifo_files
         self.irc_socket = irc_socket
@@ -42,83 +44,98 @@ class irc_router:
         self.nickname = nickname
         self.network_dir = network_dir
         self.channels = []
-        self._loop = asyncio.new_event_loop()
+        self.threads = []
+        self.disconnect_toggle = Event()
 
     def start(self):
-        try:
-            asyncio.set_event_loop(self._loop)
-            tasks = [self.user_listener(), self.irc_message_loop()]
-            self._loop.run_until_complete(asyncio.gather(*tasks))
-        finally:
-            for file in self.fifo_files:
-                try:
-                    os.close(file)
-                except:
-                    # Errors are okay at this point.
-                    pass
-            self._loop.close()
+        self.start_threads()
 
-    ## Main loop for reading irc inflow and routing to correct _out fifos.
-    ## Also handle ping/pong here
-    async def irc_message_loop(self):
-        output_files=[]
-        loop = asyncio.get_running_loop()
-        while True:
+        for file in self.fifo_files:
+            try:
+                os.close(file)
+            except:
+                # Errors are okay at this point.
+                pass
+        self.irc_send("QUIT")
 
-            for output in self.fifo_files:
-                if output.endswith('out'):
-                    if output not in output_files:
-                        print(f"{time.time()} | {self.server} has output file: {output}")
-                        output_files.append(output)   
+    def start_threads(self):
+        user_listener_thread = Thread(target=self.user_listener)
+        irc_listener_thread = Thread(target=self.irc_message_loop)
+
+        self.threads.append(user_listener_thread)
+        self.threads.append(irc_listener_thread)
+
+        # start the threads
+        for thread in self.threads:
+            thread.start()
+
+        # wait for all the threads to reach end
+        for thread in self.threads:
+            thread.join()
+
+    def get_output_fifos(self):
+        output_fifos = []
+        for fifo in self.fifo_files:
+            if fifo.endswith("out") and fifo not in output_fifos:
+                output_fifos.append(fifo)
+        return output_fifos
+
+    def write_to_server_out(self, message):
+        server_out = os.path.join(self.network_dir, "out")
+        if os.access(server_out, os.W_OK):
+            self.write_to_out(server_out, message)
+        else:
+            print(f"{time.time()} | {self.server} | {message}")
+
+    def irc_message_loop(self):
+        while not self.disconnect_toggle.is_set():
 
             try:
-                irc_input = await loop.sock_recv(self.irc_socket, 2048)
+                irc_input = self.irc_socket.recv(2048)
                 irc_input = irc_input.decode("utf-8")
             except Exception as e:
                 print(f"Error reading from socket: {e}")
                 continue
 
             if irc_input:
-                ## 
-                ## The main logic hapens here.
-                ## support for channel joins
-                ## and spliting the input to channel specifig channel/[in, out] locations
-                ##
-                if "PING" in irc_input:
-                    self.irc_send(f"PONG :{self.server}")
-                    self.write_to_out(output_files[0], f"{time.time()} | ping/pong")
-                    continue
+                self.handle_irc_input(irc_input)
+            time.sleep(0.5)
 
-                if f":{self.server} 353" in irc_input:
-                    ## We have joined a channel!
-                    match = re.search(r'353 \S+ = (#\S+)', irc_input)
-                    channel_join = match.group(1)
-                    await self.make_files(channel_join)
-                    continue
+    def handle_irc_input(self, irc_input):
+        if "PING" in irc_input:
+            self.irc_send(f"PONG :{self.server}")
+            self.write_to_server_out("ping/pong")
+        elif f":{self.server} 353" in irc_input:
+            self.handle_channel_join(irc_input)
+        elif "PRIVMSG" in irc_input:
+            self.handle_privmsg(irc_input)
+        else:
+            self.write_to_server_out(irc_input)
 
-                if "PRIVMSG" in irc_input:
-                    if self.if_input_belongs_to_channel(irc_input):
-                        continue
+    def handle_channel_join(self, irc_input):
+        ## We have joined a channel!
+        channel = re.search(r"353 \S+ = (#\S+)", irc_input).group(1)
+        self.make_files(channel)
 
-                self.write_to_out(output_files[0], irc_input)
+    def handle_privmsg(self, irc_input):
+        if not self.input_belongs_to_channel(irc_input):
+            self.write_to_server_out(irc_input)
 
-            await asyncio.sleep(0.1)
-
-    def if_input_belongs_to_channel(self, input):
+    def input_belongs_to_channel(self, input):
+        output_files = self.get_output_fifos()
         # We know that input includes "PRIVMSG"
         # But to where it shoudl go?
-        message = re.search(r':.*:(.*)', input).group(1)
-        input_user = re.search(r'^:(\S+)', input).group(1)
-        input_channel = re.search(r'PRIVMSG (\S+) :', input)
-        done=False
-        for file in self.fifo_files:
-            if input_channel.group(1) in file:
-                if file.endswith("out"):
-                    self.write_to_out(file, f"{input_user}: {message}")
-                    done=True
+        message = re.search(r":.*:(.*)", input).group(1)
+        input_user = re.search(r"^:(\S+)", input).group(1)
+        input_channel = re.search(r"PRIVMSG (\S+) :", input).group(1)
+        done = False
+        for file in output_files:
+            if input_channel in file:
+                self.write_to_out(file, f"{input_user}: {message}")
+                done = True
         return done
 
-    async def make_files(self, channel):
+    def make_files(self, channel):
         network_path = os.path.dirname(self.fifo_files[1])
         channel_dir = os.path.join(network_path, channel)
         os.makedirs(channel_dir, exist_ok=True)
@@ -134,7 +151,6 @@ class irc_router:
         fifo_files.append(f"{channel_dir}/in")
         fifo_files.append(f"{channel_dir}/out")
         self.fifo_files.extend(fifo_files)
-        await asyncio.sleep(1)
 
     def write_to_out(self, file, input):
         if file == None:
@@ -149,29 +165,28 @@ class irc_router:
         self.irc_socket.send(bytes(f"{message}\r\n", "utf-8"))
         print(f"{time.time()} | Send: {message}")
 
-    async def async_readline(self, file, queue):
+    def async_readline(self, file, queue):
         print(f"Trying to read from file {file}")
         try:
             while True:
-                with open(file, mode='r') as in_file:
+                with open(file, mode="r") as in_file:
                     line = in_file.readline().strip()
                     if not line:
                         print("There was no line!")
                         continue
-                    await queue.put(line)
+                    queue.put(line)
                     in_file.close()
-                await asyncio.sleep(0.5)
         except Exception as e:
             print(f"ERROR IN async_readline func: {e}")
 
-    async def process_user_input(self, queue):
+    def process_user_input(self, queue):
         print("Processing of user input may start!")
         while True:
             line = await queue.get()
             print(f"{time.time()} | trying to send: {line} to {self.server}")
 
             self.irc_send(line)
-            await asyncio.sleep(0.2)
+            time.sleep(0.5)
 
     async def user_listener(self):
         print("User Listener is HERE!")
@@ -189,5 +204,4 @@ class irc_router:
             # Wait for all tasks to complete
             await asyncio.gather(*tasks)
         finally:
-           self.irc_send('QUIT') 
-
+            self.irc_send("QUIT")
diff --git a/ircthing_utils.py b/ircthing_utils.py
index 5c52433..fd6f0f8 100644
--- a/ircthing_utils.py
+++ b/ircthing_utils.py
@@ -1,23 +1,53 @@
+"""
+ircthing_utils
+
+Some functions that make life nicer.
+"""
+
 import configparser
 import argparse
 import os
 import sys
+from typing import Union, List, Tuple
 
-def base_path():
+
+def base_path() -> str:
+    """
+    Returns location that the script will use as root for its dir structure
+    Returns:
+        str: path for run time files
+    """
     my_name = sys.argv[0]
     my_name_pyless, _ = os.path.splitext(my_name)
-    return f'/tmp/{my_name_pyless}'
+    return f"/tmp/{my_name_pyless}"
 
-def cli_args():
-    parser = argparse.ArgumentParser(description="Usage: python3.11 ircthing.py /myconfig.ini")
-    parser.add_argument('config', help="Path to the configuration file.")
+
+def cli_args() -> Union[str, None]:
+    """
+    Parse arguments and provide small usage message
+    Returns:
+        str or None: path to config file
+    """
+    parser = argparse.ArgumentParser(
+        description="Usage: python3.11 ircthing.py /myconfig.ini"
+    )
+    parser.add_argument("config", help="Path to the configuration file.")
 
     args = parser.parse_args()
     if args.config:
         return args.config
     return None
 
-def read_config(config_path):
+
+def read_config(config_path: str) -> List[dict]:
+    """
+    Read configuration file and return list of dicts.
+    Dictionaries hold information about irc networks/server to connecto to.
+    args:
+        str: Path to the configuration file.
+    Returns:
+        list[{}, {}]: List of dictionaries.
+    """
     config = configparser.ConfigParser()
     config.read(config_path)
 
@@ -43,12 +73,21 @@ def read_config(config_path):
             }
             network_configs.append(network_config)
         return network_configs
-    except Exception as e:
-        print(f"Failure while reading configuration file. {e}")
-        exit(1)
+    except Exception as config_read_error:
+        print(f"Failure while reading configuration file. {config_read_error}")
+        sys.exit(1)
 
-def make_files(path, net_name):
 
+def make_files(path: str, net_name: str) -> Tuple[List[str], str]:
+    """
+    Make directories and fifo files need to make irc server connection.
+    Args:
+        str: The root path for run time files.
+        str: The network name of the irc server we are joining
+    Returns:
+        list: List containing the fio files created.
+        str: Path to the directory created for the network connection.
+    """
     os.makedirs(path, exist_ok=True)
     server_dir = os.path.join(path, net_name)
     os.makedirs(server_dir, exist_ok=True)
@@ -64,4 +103,3 @@ def make_files(path, net_name):
     fifo_files.append(f"{server_dir}/in")
     fifo_files.append(f"{server_dir}/out")
     return fifo_files, server_dir
-