[BE] Use imagemagick instead of printpdf

README.md

@@ -2,4 +2,11 @@
 
 Internal system for EEGSAC's internal processes.
 
- 
+## Requirements
+
+This system requires the following:
+
+- Imagequick, available through the command `convert`
+
+
+

backend/src/controller/scans/mod.rs

@@ -1,13 +1,10 @@
 use crate::{json_result::JsonResult, model::register::Register};
-use printpdf::{Mm, PdfDocument};
 use rocket::{http::Status, serde::json::Json};
 use serde::{Deserialize, Serialize};
+use std::process::Command;
 use std::{
-    f32::consts::E,
-    fs::{self, File},
-    io::BufWriter,
+    fs,
     path::PathBuf,
-    result,
     time::{SystemTime, UNIX_EPOCH},
 };
 
@@ -164,6 +161,8 @@ fn get_image_info(path: PathBuf) -> ScanInfo {
     // crop image
     let cropped_img = img.crop_imm(0, third_point_height, mid_point_width, remaining_height);
 
+    // TODO: threshold image before getting qr
+
     // get qr from cropped image
     let results = bardecoder::default_decoder().decode(&cropped_img);
 
@@ -335,47 +334,41 @@ async fn convert_scans_from_data(data: &Vec<(PathBuf, ScanInfo)>) -> Result<(),
 }
 
 fn convert_to_pdf(image_path: &PathBuf, output_path: &PathBuf) -> Result<(), String> {
-    let img = match image::open(image_path) {
-        Ok(i) => i,
+    // Just use imagemagick to convert the image to pdf
+    // -interlace Plane -gaussian-blur 0.05 -quality 75% -rotate 270 doc.jpg doc.jpg.pdf
+    let call = Command::new("convert")
+        .arg("-strip")
+        .arg("-interlace")
+        .arg("Plane")
+        .arg("-gaussian-blur")
+        .arg("0.05")
+        .arg("-quality")
+        .arg("75%")
+        .arg("-rotate")
+        .arg("270")
+        .arg(image_path)
+        .arg(output_path)
+        .spawn();
+
+    let mut call = match call {
+        Ok(r) => r,
         Err(err) => {
-            log::error!("Error opening image: {:?}", err);
-            return Err(format!("Error abriendo imagen"));
+            log::error!("Error starting imagemagick: {:?}", err);
+            return Err(format!("Error convirtiendo imagen"));
         }
     };
 
-    // Rotate image 45 degrees clockwise
-    // let img = img.rotate270();
-
-    // Generate PDF
-    let (doc, page1, layer1) =
-        // PdfDocument::new("Certificado - EEGSAC", Mm(297.0), Mm(210.0), "Layer 1");
-        PdfDocument::new("Certificado - EEGSAC", Mm(210.0), Mm(297.0), "Layer 1");
-
-    let current_layer = doc.get_page(page1).get_layer(layer1);
-
-    let pdf_image = printpdf::image::Image::from_dynamic_image(&img);
-    let img_transform = printpdf::ImageTransform::default();
-
-    /*
-    This section of code assumes that the image is scaned at 200 DPI.
-    IF the image is scanned at a different DPI, this will give
-    wrong results.
-     */
-    let img_transform = printpdf::ImageTransform {
-        dpi: Some(200.0),
-        ..img_transform
-    };
-
-    pdf_image.add_to_layer(current_layer, img_transform);
-
-    let result = doc.save(&mut BufWriter::new(File::create(output_path).unwrap()));
-
-    // TODO: Delete image
-    match result {
-        Ok(_) => Ok(()),
-        Err(reason) => {
-            log::error!("Error saving pdf: {:?}", reason);
-            Err(format!("Error guardando pdf"))
+    match call.wait() {
+        Ok(exit_status) if exit_status.success() => Ok(()),
+        Ok(exit_status) => {
+            log::error!("Error calling imagemagick: {:?}", exit_status);
+            Err(format!(
+                "Error ejecutando imagemagick: codigo de salida no exitoso"
+            ))
+        }
+        Err(err) => {
+            log::error!("Error calling imagemagick: {:?}", err);
+            Err(format!("Error ejecutando imagemagick"))
         }
     }
 }

backend/src/model/register.rs

@@ -225,4 +225,3 @@ impl Register {
         Ok(data)
     }
 }
-