// text_reader.nvgt - Simple text document reader/editor using NVGT's audio_form
// Provides accessible navigation through text documents with optional editing

#include "form.nvgt"

// Opens a text reader/editor window with string content
// Parameters:
//   content: The text content to display (can be file contents or direct string)
//   title: Window title (default: "Text Reader")
//   readonly: If true, text cannot be edited (default: true)
// Returns: The modified text if readonly=false and user presses OK, empty string if canceled or readonly=true
string text_reader(string content, string title = "Text Reader", bool readonly = true) {
	audio_form f;
	f.create_window(title, false, true);

	// Create the multiline input box
	// In readonly mode, it's still navigable with arrows/home/end/etc
	// In edit mode, user can modify text
	int text_control = f.create_input_box(
		(readonly ? "Document (read only)" : "Document (editable)"),
		content,
		"", // no password mask
		0,  // no max length
		readonly,
		true, // multiline = true
		true  // multiline_enter = true (Ctrl+Enter for newlines)
	);

	int ok_button = -1;
	int close_button = -1;

	if (readonly) {
		// In readonly mode, just have a Close button
		close_button = f.create_button("&Close", true, true);
	} else {
		// In edit mode, have OK and Cancel buttons
		ok_button = f.create_button("&OK", true);
		close_button = f.create_button("&Cancel", false, true);
	}

	f.focus(text_control);

	// Monitor loop
	while (true) {
		f.monitor();
		wait(5);

		// Check if user pressed OK (edit mode only)
		if (!readonly && ok_button != -1 && f.is_pressed(ok_button)) {
			return f.get_text(text_control);
		}

		// Check if user pressed Close/Cancel
		if (close_button != -1 && f.is_pressed(close_button)) {
			return "";
		}

		// Check for Escape key as alternative close method
		if (key_pressed(KEY_ESCAPE)) {
			return "";
		}
	}

	return "";
}

// Opens a text reader/editor window with an array of lines
// Parameters:
//   lines: Array of text lines to display
//   title: Window title (default: "Text Reader")
//   readonly: If true, text cannot be edited (default: true)
// Returns: The modified text if readonly=false and user presses OK, empty string if canceled or readonly=true
string text_reader_lines(string[] lines, string title = "Text Reader", bool readonly = true) {
	string content = join(lines, "\n");
	return text_reader(content, title, readonly);
}

// Convenience function to read a file and display it in the text reader
// Parameters:
//   file_path: Path to the file to read
//   title: Window title (default: uses file_path as title)
//   readonly: If true, text cannot be edited (default: true)
// Returns: The modified text if readonly=false and user saves, empty string otherwise
string text_reader_file(string file_path, string title = "", bool readonly = true) {
	file f;
	if (!f.open(file_path, "rb")) {
		screen_reader_speak("Failed to open file: " + file_path, true);
		return "";
	}

	string content = f.read();
	f.close();

	// Use file_path as title if no custom title provided
	if (title == "") {
		title = file_path;
	}

	string result = text_reader(content, title, readonly);

	// If in edit mode and user pressed OK, save the file
	if (!readonly && result != "") {
		if (f.open(file_path, "wb")) {
			f.write(result);
			f.close();
			screen_reader_speak("File saved successfully", true);
			return result;
		} else {
			screen_reader_speak("Failed to save file", true);
		}
	}

	return result;
}