feat: .env config parser

3 files changed, 76 insertions, 1 deletions

diff --git a/src/config.cpp b/src/config.cpp
new file mode 100644
index 0000000..2d1b876
--- /dev/null
+++ b/src/config.cpp
@@ -0,0 +1,45 @@
+#include "config.hpp"
+
+#include <cctype>
+#include <fstream>
+#include <iostream>
+#include <optional>
+#include <sstream>
+#include <string>
+
+namespace bot {
+  std::optional<Configuration> parse_configuration_from_file(
+      const std::string &file_path) {
+    std::ifstream ifs(file_path);
+
+    if (!ifs.is_open()) {
+      std::cerr << "*** Failed to open the configuration file: " << file_path
+                << "!\n";
+      return std::nullopt;
+    }
+
+    Configuration cfg;
+
+    std::string line;
+    while (std::getline(ifs, line, '\n')) {
+      std::istringstream iss(line);
+      std::string key;
+      std::string value;
+
+      std::getline(iss, key, '=');
+      std::getline(iss, value);
+
+      for (char &c : key) {
+        c = tolower(c);
+      }
+
+      if (key == "bot_username") {
+        cfg.bot_username = value;
+      } else if (key == "bot_password") {
+        cfg.bot_password = value;
+      }
+    }
+
+    return cfg;
+  }
+}
diff --git a/src/config.hpp b/src/config.hpp
new file mode 100644
index 0000000..3c10d86
--- /dev/null
+++ b/src/config.hpp
@@ -0,0 +1,14 @@
+#pragma once
+
+#include <optional>
+#include <string>
+
+namespace bot {
+  struct Configuration {
+      std::string bot_username;
+      std::string bot_password;
+  };
+
+  std::optional<Configuration> parse_configuration_from_file(
+      const std::string &file_path);
+}
diff --git a/src/main.cpp b/src/main.cpp
index b940d1d..129b074 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,11 +1,27 @@
 #include <iostream>
+#include <optional>
 
+#include "config.hpp"
 #include "irc/client.hpp"
 
 int main(int argc, char *argv[]) {
   std::cout << "hi world\n";
 
-  bot::irc::Client client("", "");
+  std::optional<bot::Configuration> o_cfg =
+      bot::parse_configuration_from_file(".env");
+
+  if (!o_cfg.has_value()) {
+    return -1;
+  }
+
+  bot::Configuration cfg = o_cfg.value();
+
+  if (cfg.bot_password.empty() || cfg.bot_username.empty()) {
+    std::cerr << "*** BOT_USERNAME and BOT_PASSWORD must be set!\n";
+    return -1;
+  }
+
+  bot::irc::Client client(cfg.bot_username, cfg.bot_password);
 
   client.run();