refactor: adjust code structure

1 files changed, 103 insertions, 0 deletions

diff --git a/src/core/ui_view.cc b/src/core/ui_view.cc
new file mode 100644
index 0000000..5164fe0
--- /dev/null
+++ b/src/core/ui_view.cc
@@ -0,0 +1,103 @@
+/*
+ * Ricochet - A minimalist CLI web browser for fast, distraction-free navigation.
+ * Copyright (C) 2026  Richard Qin
+ *
+ * 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/>.
+ */
+
+#include "ricochet/core/ui_view.hh"
+#include <iostream>
+
+namespace ricochet::core {
+
+std::string build_footer( std::string_view url, std::size_t width )
+{
+  const std::string_view keys
+    = " | [j/k]Scroll [n/N]Find [/]Nav [f]Hint [i]In [r]Ref [H/L]Back [h]Hist [b/B]Mark [?]Help [q]Quit ";
+  const std::string_view prefix = " URL: ";
+
+  std::string footer;
+  if ( width <= keys.length() + prefix.length() + 3 ) {
+    footer.reserve( prefix.length() + url.length() + keys.length() );
+    footer += prefix;
+    footer += url;
+    footer += keys;
+    if ( footer.length() > width && width > 3 ) {
+      footer.erase( width - 3 );
+      footer += "...";
+    }
+  } else {
+    const std::size_t max_url_len = width - keys.length() - prefix.length();
+    footer.reserve( width );
+    footer += prefix;
+    if ( url.length() > max_url_len ) {
+      footer += url.substr( 0, max_url_len - 3 );
+      footer += "...";
+    } else {
+      footer += url;
+    }
+    footer += keys;
+  }
+
+  if ( footer.length() < width ) {
+    footer.append( width - footer.length(), ' ' );
+  }
+  return footer;
+}
+
+void draw_view( const tui::Terminal& terminal,
+                const std::vector<std::string>& lines,
+                std::size_t scroll_y,
+                std::string_view url,    // NOLINT(bugprone-easily-swappable-parameters)
+                std::string_view title ) // NOLINT(bugprone-easily-swappable-parameters)
+{
+  terminal.clear_screen();
+  auto [width, height] = terminal.get_size();
+  const std::size_t usable_height = ( height > 2 ) ? ( height - 2 ) : 1;
+
+  std::string clean_title( title );
+  if ( clean_title.empty() ) {
+    const std::size_t start = url.find( "://" );
+    const std::size_t host_start = ( start == std::string::npos ) ? 0 : start + 3;
+    const std::size_t host_end = url.find( '/', host_start );
+    clean_title = std::string( url.substr( host_start, host_end - host_start ) );
+  }
+  for ( char& c : clean_title ) {
+    if ( c == '\n' || c == '\r' ) {
+      c = ' ';
+    }
+  }
+
+  std::string header = " PAGE: " + clean_title;
+  if ( header.size() < width ) {
+    header.append( width - header.size(), ' ' );
+  } else if ( header.size() > width && width > 3 ) {
+    header = header.substr( 0, width - 3 ) + "...";
+  }
+  std::cout << "\033[7m" << header << "\033[0m\r\n";
+
+  for ( std::size_t i = 0; i < usable_height; ++i ) {
+    if ( scroll_y + i < lines.size() ) {
+      std::cout << lines[scroll_y + i] << "\r\n";
+    } else {
+      std::cout << "~\r\n";
+    }
+  }
+
+  const std::string footer = build_footer( url, width );
+  std::cout << "\033[7m" << footer << "\033[0m";
+  std::cout.flush();
+}
+
+} // namespace ricochet::core