Add QR codes, link expiry, password protection, previews, audit trail and bulk operations

src/services/bulk.rs

@@ -0,0 +1,49 @@
+use crate::models::Url;
+use crate::services::qr::{generate_qr_png, generate_qr_svg};
+use std::io::Write;
+use zip::write::FileOptions;
+use zip::ZipWriter;
+
+/// Export QR codes for the given URLs as a ZIP file.
+/// `format` can be "png" or "svg".
+/// `base_url` is used to build the full short URL encoded in the QR.
+pub fn export_qr_zip(
+    urls: &[Url],
+    format: &str,
+    base_url: &str,
+) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
+    let mut buf = Vec::new();
+    {
+        let mut zip = ZipWriter::new(std::io::Cursor::new(&mut buf));
+        let options =
+            FileOptions::<()>::default().compression_method(zip::CompressionMethod::Deflated);
+
+        let mut csv_content = String::from("code,destination,qr_filename\n");
+
+        for url in urls {
+            let full_url = format!("{}/{}", base_url.trim_end_matches('/'), url.code);
+            let ext = if format == "svg" { "svg" } else { "png" };
+            let filename = format!("{}.{}", url.code, ext);
+
+            let qr_data = if format == "svg" {
+                generate_qr_svg(&full_url)?.into_bytes()
+            } else {
+                generate_qr_png(&full_url, 256)?
+            };
+
+            zip.start_file(&filename, options)?;
+            zip.write_all(&qr_data)?;
+
+            // Escape quotes in destination for CSV formatting
+            let escaped_dest = url.destination.replace('"', "\"\"");
+            csv_content.push_str(&format!("{},\"{}\",{}\n", url.code, escaped_dest, filename));
+        }
+
+        zip.start_file("manifest.csv", options)?;
+        zip.write_all(csv_content.as_bytes())?;
+
+        zip.finish()?;
+    }
+
+    Ok(buf)
+}