refactor: cleanup initial impl and modularize everything

client/client.go

@@ -0,0 +1,76 @@
+// gorc project
+// Copyright (C) 2021 IllusionMan1212 and contributors
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see https://www.gnu.org/licenses.
+
+package client
+
+import (
+	"crypto/tls"
+	"fmt"
+	"log"
+)
+
+type Client struct {
+	// tcp connection
+	conn *tls.Conn
+
+	// channel to receive data that comes through from the connection
+	receive chan string
+}
+
+func NewClient(host string, port string) *Client {
+	// TODO: allow for insecure connections thru a checkbox (needed for irc servers that maybe don't have encryption on)
+	// TODO: distinguish between secure and insecure connections
+	cfg := &tls.Config{ServerName: host}
+	addr := fmt.Sprintf("%s:%s", host, port)
+	conn, err := tls.Dial("tcp", addr, cfg)
+	if err != nil {
+		// TODO: properly handle the error instead of Fatal-ing (failed to initiate a connection to server)
+		log.Fatal(err)
+	}
+
+	// TODO: read nickname and channel from user input (stdin ?? or TUI)
+	conn.Write([]byte("CAP LS\r\n"))
+	// conn.Write([]byte("PASS password"))
+	conn.Write([]byte("NICK illusion434\r\n"))
+	conn.Write([]byte("USER illusion434 0 * :illusion434\r\n"))
+	// TODO: CAP REQ :whatever capability the client recognizes and supports
+	conn.Write([]byte("CAP END\r\n"))
+	conn.Write([]byte("JOIN ##programming\r\n"))
+
+	return &Client{
+		conn:    conn,
+		receive: make(chan string),
+	}
+}
+
+func (c Client) handleCommand(message IRCMessage) {
+	switch message.Command {
+	case "PING":
+		c.conn.Write([]byte("PONG\r\n"))
+		break
+	}
+	// TODO: handle all other commands
+}
+
+func (c Client) Run() {
+	for {
+		select {
+		case line := <-c.receive:
+			messages := parseIRCMessage(line)
+			c.handleCommand(messages)
+		}
+	}
+}

client/parser.go

@@ -0,0 +1,67 @@
+// gorc project
+// Copyright (C) 2021 IllusionMan1212 and contributors
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see https://www.gnu.org/licenses.
+
+package client
+
+import (
+	"strings"
+)
+
+func parseTags(rawTags string) []Tag {
+	// TODO:
+	// TOOD: some tags don't have an "=" and they're basically considered "true"
+	return nil
+}
+
+func parseIRCMessage(line string) IRCMessage {
+	ircMessage := &IRCMessage{}
+
+	if line[0] == '@' {
+		substrs := strings.SplitN(line, " ", 2)
+		tags := parseTags(substrs[0][1:])
+		ircMessage.Tags = tags
+
+		line = substrs[1]
+	}
+
+	if line[0] == ':' {
+		substrs := strings.SplitN(line, " ", 2)
+		ircMessage.Source = substrs[0]
+
+		line = substrs[1]
+	}
+
+	substrs := strings.SplitN(line, " ", 2)
+
+	ircMessage.Command = substrs[0]
+
+	// if parameters exist
+	if len(substrs) > 1 {
+		params := strings.SplitN(substrs[1], " :", 2)
+
+		parameters := strings.Split(params[0], " ")
+		// TODO: parameters can be empty. this is denoted by a ":"
+
+		// if there's a trailing parameter
+		if len(params) > 1 {
+			parameters = append(parameters, params[1])
+		}
+
+		ircMessage.Parameters = parameters
+	}
+
+	return *ircMessage
+}

client/structs.go

@@ -0,0 +1,29 @@
+// gorc project
+// Copyright (C) 2021 IllusionMan1212 and contributors
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see https://www.gnu.org/licenses.
+
+package client
+
+type IRCMessage struct {
+	Tags       []Tag    // starts with @ | Optional
+	Source     string   // starts with : | Optional
+	Command    string   // can either be a string or a numeric value | Required
+	Parameters []string // Optional (Dependant on command)
+}
+
+type Tag struct {
+	key   string
+	value string
+}