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package ui;
import model.html.*;
import java.nio.file.*;
import java.util.*;
/**
* The console interface to Apus.
*/
public class BrowserApp {
private Scanner input;
private static final String border = "===============================================";
private String pathString;
private ArrayList<Node> parsed;
private ArrayDeque<String> tabs;
// Renders an arbitrary HTML page and arbitrary HTML input.
public BrowserApp() {
println("apus: currently a barebones html/css renderer");
this.input = new Scanner(System.in);
this.tabs = new ArrayDeque<>();
while (true) {
try {
String file = Files.readString(Path.of(pathString));
HtmlParser parser = new HtmlParser();
parsed = parser.parseHtml(file);
println(border);
renderHtml(parsed);
println(border);
println("Page rendered. Input additional commands if desired.");
println("Impemented commands: newuri, newtab, nexttab, quit");
handleInput(this.input.next());
println(border);
} catch (Exception e) {
println("Reading from the file failed with " + e.toString());
println("Please try again.");
}
}
}
// Barebones HTML rendering. Iterates through a list of Nodes and their children and prints any text.
private void renderHtml(ArrayList<Node> html) {
for (Node node: html) {
switch (node) {
case ElementNode e -> {
renderHtml(e.getChildren());
}
default -> {
println(node.getData());
}
}
}
}
// Handles user input after rendering an initial site
private void handleInput(String input) {
switch (input) {
case "newuri" -> {
println("please provide a path to a file (examples located in data/*):");
pathString = this.input.next();
}
case "newtab" -> {
this.tabs.add(pathString);
println("please provide a path to a file (examples located in data/*):");
pathString = this.input.next();
}
case "nexttab" -> {
this.tabs.add(pathString);
pathString = this.tabs.removeFirst();
}
case "quit" -> System.exit(0);
default -> println("Sorry, I didn't quite get that. Please try again.");
}
}
private void print(String toPrint) {
System.out.print(toPrint);
}
private void println(String toPrint) {
System.out.println(toPrint);
}
}
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