feat: write quarto assignment with encryption

src/commands/export.rs

@@ -195,6 +195,55 @@ pub(crate) fn export(cli: &Cli, sub: &ExportCommand) -> Result<Outcome> {
             }
             Ok(Outcome::Ok)
         }
+        ExportCommand::Site {
+            id,
+            form,
+            out,
+            password,
+            assets,
+        } => {
+            {
+                use coursebank::site;
+                let record = load_record(&catalog, id)?;
+                let form = pick_form(&record, form)?;
+                let dir = out.clone().unwrap_or(build);
+                std::fs::create_dir_all(&dir)?;
+
+                let rendered = site::render(
+                    &catalog,
+                    &record,
+                    site::Options {
+                        form,
+                        password: password.clone(),
+                    },
+                )?;
+
+                let qmd = dir.join("_questions.qmd");
+                yaml::write_text(&qmd, &rendered.questions_qmd)?;
+                let json = dir.join(format!("{}-solutions.json", rendered.page));
+                yaml::write_text(&json, &rendered.solutions_json)?;
+
+                if let Some(asset_dir) = assets {
+                    std::fs::create_dir_all(asset_dir)?;
+                    for (name, body) in site::assets() {
+                        let path = asset_dir.join(name);
+                        yaml::write_text(&path, body)?;
+                        if !cli.quiet {
+                            println!("wrote {}", path.display());
+                        }
+                    }
+                }
+
+                // The password cannot be recovered from the files; always print it.
+                println!("password for {}: {}", rendered.page, rendered.password);
+                if !cli.quiet {
+                    println!("wrote {}", qmd.display());
+                    println!("wrote {}", json.display());
+                    println!("\nInclude in the page with: {{{{< include _questions.qmd >}}}}");
+                }
+                Ok(Outcome::Ok)
+            }
+        }
     }
 }