From d400369084107104f51fe217d5781c8d7bd07ff9 Mon Sep 17 00:00:00 2001
From: Akshay Nair <phenax5@gmail.com>
Date: Mon, 10 Mar 2025 00:20:31 +0530
Subject: Add dumb command parser

---
 include/CommandParser.hpp      | 31 +++++++++++++++++++++++++++++++
 include/widgets/MainWindow.hpp |  2 ++
 src/CommandParser.cpp          | 32 ++++++++++++++++++++++++++++++++
 src/widgets/MainWindow.cpp     | 39 ++++++++++++++++++++++++++++-----------
 4 files changed, 93 insertions(+), 11 deletions(-)
 create mode 100644 include/CommandParser.hpp
 create mode 100644 src/CommandParser.cpp

diff --git a/include/CommandParser.hpp b/include/CommandParser.hpp
new file mode 100644
index 0000000..128b5f4
--- /dev/null
+++ b/include/CommandParser.hpp
@@ -0,0 +1,31 @@
+#pragma once
+
+#include <QtCore/qcontainerfwd.h>
+#include <QtCore>
+
+enum CommandType {
+  Noop,
+  LuaEval,
+  Open,
+  TabOpen,
+  TabNext,
+  TabPrev,
+};
+
+class Cmd {
+public:
+  CommandType command;
+  QStringList args;
+
+  Cmd(CommandType command = Noop, QStringList args = QStringList())
+      : command(command), args(args) {}
+};
+
+class CommandParser {
+public:
+  CommandParser();
+  Cmd parse(QString command);
+
+private:
+  CommandType toCommandType(QString cmd);
+};
diff --git a/include/widgets/MainWindow.hpp b/include/widgets/MainWindow.hpp
index 15e2889..7f54ce2 100644
--- a/include/widgets/MainWindow.hpp
+++ b/include/widgets/MainWindow.hpp
@@ -2,6 +2,7 @@
 
 #include <QMainWindow>
 #include <QObject>
+#include <QStackedLayout>
 #include <QWebEngineView>
 
 #include "LuaRuntime.hpp"
@@ -23,4 +24,5 @@ private:
   BrowserManager *browserManager;
   CommandInput *commandInput;
   LuaRuntime *luaRuntime;
+  QStackedLayout *layout;
 };
diff --git a/src/CommandParser.cpp b/src/CommandParser.cpp
new file mode 100644
index 0000000..ccb84bc
--- /dev/null
+++ b/src/CommandParser.cpp
@@ -0,0 +1,32 @@
+#include <QtCore/qnamespace.h>
+#include <QtCore>
+
+#include "CommandParser.hpp"
+
+CommandParser::CommandParser() {}
+
+Cmd CommandParser::parse(QString input) {
+  auto parts = input.split(QRegularExpression("\\s+"), Qt::SkipEmptyParts);
+
+  if (parts.isEmpty())
+    return Cmd();
+
+  auto cmd = toCommandType(parts.first());
+  parts.removeFirst();
+  return Cmd(cmd, parts);
+}
+
+CommandType CommandParser::toCommandType(QString cmd) {
+  if (cmd == "lua")
+    return LuaEval;
+  if (cmd == "open")
+    return Open;
+  if (cmd == "tabopen")
+    return TabOpen;
+  if (cmd == "bn" || cmd == "bnext")
+    return TabNext;
+  if (cmd == "bp" || cmd == "bprevious")
+    return TabPrev;
+
+  return Noop;
+}
diff --git a/src/widgets/MainWindow.cpp b/src/widgets/MainWindow.cpp
index 14f6aa7..9ac5f12 100644
--- a/src/widgets/MainWindow.cpp
+++ b/src/widgets/MainWindow.cpp
@@ -3,6 +3,7 @@
 #include <QVBoxLayout>
 #include <QWebEngineView>
 
+#include "CommandParser.hpp"
 #include "widgets/BrowserManager.hpp"
 #include "widgets/CommandInput.hpp"
 #include "widgets/MainWindow.hpp"
@@ -12,7 +13,7 @@ MainWindow::MainWindow() {
   setCentralWidget(new QWidget());
 
   // Root stacked layout
-  auto layout = new QStackedLayout();
+  layout = new QStackedLayout();
   layout->setContentsMargins(0, 0, 0, 0);
   layout->setSpacing(0);
   layout->setStackingMode(QStackedLayout::StackAll);
@@ -46,22 +47,38 @@ void MainWindow::hideURLInput() {
 }
 
 void MainWindow::showURLInput() {
-  commandInput->setInputText(browserManager->currentUrl().toString());
-  commandInput->raise();
+  commandInput->setInputText("open " + browserManager->currentUrl().toString());
   commandInput->setHidden(false);
+  layout->setCurrentWidget(commandInput);
   commandInput->setInputFocus(true);
 }
 
 void MainWindow::evaluateCommand(QString command) {
-  if (!command.isEmpty()) {
-    // TODO: Temporary hack
-    if (command.startsWith("lua ")) {
-      luaRuntime->evaluate(command.slice(4).toStdString().c_str());
-    } else {
-      browserManager->setCurrentUrl(command);
-    }
-  }
   hideURLInput();
+
+  // TODO: Temporary hack
+  CommandParser parser;
+  auto cmd = parser.parse(command);
+
+  switch (cmd.command) {
+  case CommandType::LuaEval:
+    luaRuntime->evaluate(cmd.args.join(" ").toStdString().c_str());
+    break;
+  case CommandType::Open:
+    browserManager->openUrl(cmd.args.first(), OpenType::OpenUrl);
+    break;
+  case CommandType::TabOpen:
+    browserManager->openUrl(cmd.args.at(1), OpenType::OpenUrlInTab);
+    break;
+  case CommandType::TabNext:
+    browserManager->nextWebView();
+    break;
+  case CommandType::TabPrev:
+    browserManager->previousWebView();
+    break;
+  case CommandType::Noop:
+    break;
+  }
 }
 
 void MainWindow::keyPressEvent(QKeyEvent *event) {
-- 
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