Detect & read QR codes from certificate scans

backend/Cargo.lock

@@ -59,6 +59,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "anyhow"
+version = "1.0.75"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
+
 [[package]]
 name = "async-channel"
 version = "1.9.0"
@@ -128,13 +134,16 @@ checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 name = "backend"
 version = "0.1.0"
 dependencies = [
+ "bardecoder",
  "chrono",
  "dotenvy",
  "env_logger",
+ "image",
  "isahc",
  "lazy_static",
  "log",
  "once_cell",
+ "printpdf",
  "reqwest",
  "rocket",
  "scraper",
@@ -158,6 +167,19 @@ dependencies = [
  "rustc-demangle",
 ]
 
+[[package]]
+name = "bardecoder"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "757eeab9757d5ddd88aa1420449f3ce92631339b7f5b3785808da7a148de35d9"
+dependencies = [
+ "anyhow",
+ "image",
+ "log",
+ "newtype_derive",
+ "thiserror",
+]
+
 [[package]]
 name = "base64"
 version = "0.21.2"
@@ -176,6 +198,12 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "383d29d513d8764dcdc42ea295d979eb99c3c9f00607b3692cf68a431f7dca72"
 
+[[package]]
+name = "bit_field"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc827186963e592360843fb5ba4b973e145841266c1357f7180c43526f2e5b61"
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -200,12 +228,29 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "bstr"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6798148dccfbff0fae41c7574d2fa8f1ef3492fba0face179de5d8d447d67b05"
+dependencies = [
+ "memchr",
+ "regex-automata 0.3.6",
+ "serde",
+]
+
 [[package]]
 name = "bumpalo"
 version = "3.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a3e2c3daef883ecc1b5d58c15adae93470a91d425f3532ba1695849656af3fc1"
 
+[[package]]
+name = "bytemuck"
+version = "1.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "374d28ec25809ee0e23827c2ab573d729e293f281dfe393500e7ad618baa61c6"
+
 [[package]]
 name = "byteorder"
 version = "1.4.3"
@@ -254,6 +299,12 @@ dependencies = [
  "windows-targets",
 ]
 
+[[package]]
+name = "color_quant"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
+
 [[package]]
 name = "concurrent-queue"
 version = "2.3.0"
@@ -348,6 +399,39 @@ version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9cace84e55f07e7301bae1c519df89cdad8cc3cd868413d3fdbdeca9ff3db484"
 
+[[package]]
+name = "crc32fast"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b540bd8bc810d3885c6ea91e2018302f68baba2129ab3e88f32389ee9370880d"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "crossbeam-deque"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce6fd6f855243022dcecf8702fef0c297d4338e226845fe067f6341ad9fa0cef"
+dependencies = [
+ "cfg-if",
+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.9.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae211234986c545741a7dc064309f67ee1e5ad243d0e48335adc0484d960bcc7"
+dependencies = [
+ "autocfg",
+ "cfg-if",
+ "crossbeam-utils",
+ "memoffset",
+ "scopeguard",
+]
+
 [[package]]
 name = "crossbeam-queue"
 version = "0.3.8"
@@ -367,6 +451,12 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "crunchy"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
+
 [[package]]
 name = "crypto-common"
 version = "0.1.6"
@@ -606,6 +696,22 @@ version = "2.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0206175f82b8d6bf6652ff7d71a1e27fd2e4efde587fd368662814d6ec1d9ce0"
 
+[[package]]
+name = "exr"
+version = "1.71.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "832a761f35ab3e6664babfbdc6cef35a4860e816ec3916dcfd0882954e98a8a8"
+dependencies = [
+ "bit_field",
+ "flume 0.11.0",
+ "half",
+ "lebe",
+ "miniz_oxide",
+ "rayon-core",
+ "smallvec",
+ "zune-inflate",
+]
+
 [[package]]
 name = "fastrand"
 version = "1.9.0"
@@ -621,6 +727,15 @@ version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6999dc1837253364c2ebb0704ba97994bd874e8f195d665c50b7548f6ea92764"
 
+[[package]]
+name = "fdeflate"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64d6dafc854908ff5da46ff3f8f473c6984119a2876a383a860246dd7841a868"
+dependencies = [
+ "simd-adler32",
+]
+
 [[package]]
 name = "figment"
 version = "0.10.10"
@@ -635,6 +750,16 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "flate2"
+version = "1.0.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46303f565772937ffe1d394a4fac6f411c6013172fadde9dcdb1e147a086940e"
+dependencies = [
+ "crc32fast",
+ "miniz_oxide",
+]
+
 [[package]]
 name = "flume"
 version = "0.10.14"
@@ -647,6 +772,15 @@ dependencies = [
  "spin 0.9.8",
 ]
 
+[[package]]
+name = "flume"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55ac459de2512911e4b674ce33cf20befaba382d05b62b008afc1c8b57cbf181"
+dependencies = [
+ "spin 0.9.8",
+]
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -841,6 +975,16 @@ dependencies = [
  "wasi 0.11.0+wasi-snapshot-preview1",
 ]
 
+[[package]]
+name = "gif"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80792593675e051cf94a4b111980da2ba60d4a83e43e0048c5693baab3977045"
+dependencies = [
+ "color_quant",
+ "weezl",
+]
+
 [[package]]
 name = "gimli"
 version = "0.28.0"
@@ -872,6 +1016,15 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "half"
+version = "2.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02b4af3693f1b705df946e9fe5631932443781d0aabb423b62fcd4d73f6d2fd0"
+dependencies = [
+ "crunchy",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.12.3"
@@ -1090,6 +1243,25 @@ dependencies = [
  "unicode-normalization",
 ]
 
+[[package]]
+name = "image"
+version = "0.24.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f3dfdbdd72063086ff443e297b61695500514b1e41095b6fb9a5ab48a70a711"
+dependencies = [
+ "bytemuck",
+ "byteorder",
+ "color_quant",
+ "exr",
+ "gif",
+ "jpeg-decoder",
+ "num-rational",
+ "num-traits",
+ "png",
+ "qoi",
+ "tiff",
+]
+
 [[package]]
 name = "indexmap"
 version = "1.9.3"
@@ -1186,6 +1358,15 @@ version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
 
+[[package]]
+name = "jpeg-decoder"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc0000e42512c92e31c2252315bda326620a4e034105e900c98ec492fa077b3e"
+dependencies = [
+ "rayon",
+]
+
 [[package]]
 name = "js-sys"
 version = "0.3.64"
@@ -1204,6 +1385,12 @@ dependencies = [
  "spin 0.5.2",
 ]
 
+[[package]]
+name = "lebe"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03087c2bad5e1034e8cace5926dec053fb3790248370865f5117a7d0213354c8"
+
 [[package]]
 name = "libc"
 version = "0.2.147"
@@ -1249,6 +1436,12 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "linked-hash-map"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.4.5"
@@ -1286,6 +1479,23 @@ dependencies = [
  "tracing-subscriber",
 ]
 
+[[package]]
+name = "lopdf"
+version = "0.31.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07c8e1b6184b1b32ea5f72f572ebdc40e5da1d2921fa469947ff7c480ad1f85a"
+dependencies = [
+ "encoding_rs",
+ "flate2",
+ "itoa",
+ "linked-hash-map",
+ "log",
+ "md5",
+ "pom",
+ "time 0.3.27",
+ "weezl",
+]
+
 [[package]]
 name = "mac"
 version = "0.1.1"
@@ -1330,12 +1540,27 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "md5"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "490cc448043f947bae3cbee9c203358d62dbee0db12107a74be5c30ccfd09771"
+
 [[package]]
 name = "memchr"
 version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
 
+[[package]]
+name = "memoffset"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a634b1c61a95585bd15607c6ab0c4e5b226e695ff2800ba0cdccddf208c406c"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "mime"
 version = "0.3.17"
@@ -1355,6 +1580,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e7810e0be55b428ada41041c41f32c9f1a42817901b4ccf45fa3d4b6561e74c7"
 dependencies = [
  "adler",
+ "simd-adler32",
 ]
 
 [[package]]
@@ -1412,6 +1638,15 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e4a24736216ec316047a1fc4252e27dabb04218aa4a3f37c6e7ddbf1f9782b54"
 
+[[package]]
+name = "newtype_derive"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac8cd24d9f185bb7223958d8c1ff7a961b74b1953fd05dba7cc568a63b3861ec"
+dependencies = [
+ "rustc_version",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -1470,6 +1705,17 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-rational"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0638a1c9d0a3c0914158145bc76cff373a75a627e6ecbfb71cbe6f453a5a19b0"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.16"
@@ -1555,6 +1801,15 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
 
+[[package]]
+name = "owned_ttf_parser"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60ac8dda2e5cc09bf6480e3b3feff9783db251710c922ae9369a429c51efdeb0"
+dependencies = [
+ "ttf-parser",
+]
+
 [[package]]
 name = "parking"
 version = "2.1.1"
@@ -1767,6 +2022,19 @@ version = "0.3.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26072860ba924cbfa98ea39c8c19b4dd6a4a25423dbdf219c1eca91aa0cf6964"
 
+[[package]]
+name = "png"
+version = "0.17.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd75bf2d8dd3702b9707cdbc56a5b9ef42cec752eb8b3bafc01234558442aa64"
+dependencies = [
+ "bitflags 1.3.2",
+ "crc32fast",
+ "fdeflate",
+ "flate2",
+ "miniz_oxide",
+]
+
 [[package]]
 name = "polling"
 version = "2.8.0"
@@ -1783,6 +2051,15 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "pom"
+version = "3.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c2d73a5fe10d458e77534589512104e5aa8ac480aa9ac30b74563274235cce4"
+dependencies = [
+ "bstr",
+]
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.17"
@@ -1795,6 +2072,19 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
 
+[[package]]
+name = "printpdf"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f626e180738289baa7ea2d70e603698520735060a664141203cc17bd8e4379c0"
+dependencies = [
+ "image",
+ "js-sys",
+ "lopdf",
+ "owned_ttf_parser",
+ "time 0.3.27",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.66"
@@ -1833,6 +2123,15 @@ dependencies = [
  "psl-types",
 ]
 
+[[package]]
+name = "qoi"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f6d64c71eb498fe9eae14ce4ec935c555749aef511cca85b5568910d6e48001"
+dependencies = [
+ "bytemuck",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.33"
@@ -1872,6 +2171,26 @@ dependencies = [
  "getrandom",
 ]
 
+[[package]]
+name = "rayon"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c27db03db7734835b3f53954b534c91069375ce6ccaa2e065441e07d9b6cdb1"
+dependencies = [
+ "either",
+ "rayon-core",
+]
+
+[[package]]
+name = "rayon-core"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ce3fb6ad83f861aac485e76e1985cd109d9a3713802152be56c3b1f0e0658ed"
+dependencies = [
+ "crossbeam-deque",
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.3.5"
@@ -2134,6 +2453,15 @@ version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
 
+[[package]]
+name = "rustc_version"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c5f5376ea5e30ce23c03eb77cbe4962b988deead10910c372b226388b594c084"
+dependencies = [
+ "semver",
+]
+
 [[package]]
 name = "rustix"
 version = "0.38.8"
@@ -2279,6 +2607,12 @@ dependencies = [
  "smallvec",
 ]
 
+[[package]]
+name = "semver"
+version = "0.1.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d4f410fedcf71af0345d7607d246e7ad15faaadd49d240ee3b24e5dc21a820ac"
+
 [[package]]
 name = "serde"
 version = "1.0.188"
@@ -2390,6 +2724,12 @@ dependencies = [
  "rand_core",
 ]
 
+[[package]]
+name = "simd-adler32"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
+
 [[package]]
 name = "siphasher"
 version = "0.3.11"
@@ -2665,7 +3005,7 @@ checksum = "be4c21bf34c7cae5b283efb3ac1bcc7670df7561124dc2f8bdc0b59be40f79a2"
 dependencies = [
  "atoi",
  "chrono",
- "flume",
+ "flume 0.10.14",
  "futures-channel",
  "futures-core",
  "futures-executor",
@@ -2831,6 +3171,17 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "tiff"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d172b0f4d3fba17ba89811858b9d3d97f928aece846475bbda076ca46736211"
+dependencies = [
+ "flate2",
+ "jpeg-decoder",
+ "weezl",
+]
+
 [[package]]
 name = "time"
 version = "0.1.45"
@@ -3068,6 +3419,12 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3528ecfd12c466c6f163363caf2d02a71161dd5e1cc6ae7b34207ea2d42d81ed"
 
+[[package]]
+name = "ttf-parser"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ae2f58a822f08abdaf668897e96a5656fe72f5a9ce66422423e8849384872e6"
+
 [[package]]
 name = "typenum"
 version = "1.16.0"
@@ -3306,6 +3663,12 @@ dependencies = [
  "rustls-webpki",
 ]
 
+[[package]]
+name = "weezl"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9193164d4de03a926d909d3bc7c30543cecb35400c02114792c2cae20d5e2dbb"
+
 [[package]]
 name = "whoami"
 version = "1.4.1"
@@ -3454,3 +3817,12 @@ name = "zeroize"
 version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a0956f1ba7c7909bfb66c2e9e4124ab6f6482560f6628b5aaeba39207c9aad9"
+
+[[package]]
+name = "zune-inflate"
+version = "0.2.54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73ab332fe2f6680068f3582b16a24f90ad7096d5d39b974d1c0aff0125116f02"
+dependencies = [
+ "simd-adler32",
+]

backend/Cargo.toml

@@ -19,5 +19,8 @@ lazy_static = "1.4.0"
 once_cell = "1.18.0"
 log = "0.4.20"
 env_logger = "0.10.0"
+bardecoder = "0.5.0"
+image = "0.24.7"
+printpdf = { version = "0.6.0", features = ["image", "embedded_images"] }
 
 

backend/src/controller/mod.rs

@@ -3,3 +3,4 @@ pub mod course;
 pub mod custom_label;
 pub mod person;
 pub mod register;
+pub mod scans;

backend/src/controller/person/mod.rs

@@ -1,4 +1,4 @@
-use log::{info, error};
+use log::{error, info};
 use reqwest::Client;
 use rocket::http::Status;
 use rocket::serde::json::Json;

backend/src/controller/scans/mod.rs

@@ -0,0 +1,125 @@
+use crate::json_result::JsonResult;
+use printpdf::{Mm, PdfDocument};
+use rocket::{http::Status, serde::json::Json};
+use std::{
+    fs::{self, File},
+    io::BufWriter,
+    path::PathBuf,
+};
+
+const SCAN_PATH: &str = "/srv/srv/shares/eegsac/ESCANEOS/";
+
+#[get("/scans/detect")]
+pub async fn detect_scans() -> (Status, Json<JsonResult<Vec<String>>>) {
+    // TODO: Move to ENV variable?
+    let paths = match fs::read_dir(SCAN_PATH) {
+        Ok(paths) => paths,
+        Err(err) => {
+            eprintln!("Error reading dir: {:?}", err);
+            return (
+                Status::InternalServerError,
+                JsonResult::err("Error leyendo directorio".into()),
+            );
+        }
+    };
+
+    let mut result = Vec::<String>::new();
+
+    for p in paths {
+        let p = match p {
+            Ok(p) => p,
+            Err(err) => {
+                eprintln!("Error reading path: {:?}", err);
+                return (
+                    Status::InternalServerError,
+                    JsonResult::err("Error leyendo directorio".into()),
+                );
+            }
+        };
+
+        let file_path = p.path();
+
+        if file_path.is_dir() {
+            continue;
+        }
+
+        let filename = match file_path.file_name() {
+            Some(filename) => filename,
+            None => {
+                eprintln!("Error getting file name: {:?}", file_path);
+                return (
+                    Status::InternalServerError,
+                    JsonResult::err("Error leyendo archivo en directorio".into()),
+                );
+            }
+        };
+
+        let filename = match filename.to_str() {
+            Some(p) => p,
+            None => {
+                eprintln!("Error getting file as string: {:?}", p);
+                return (
+                    Status::InternalServerError,
+                    JsonResult::err("Error leyendo directorio".into()),
+                );
+            }
+        };
+
+        if filename.ends_with(".jpg") && filename.starts_with("eeg") {
+            result.push(filename.to_string());
+        }
+    }
+
+    for filename in result.iter() {
+        let path = PathBuf::from(format!("{}{}", SCAN_PATH, filename));
+
+        examine_scan(&path);
+    }
+
+    (Status::Ok, JsonResult::ok(result))
+}
+
+fn examine_scan(path: &PathBuf) {
+    let img = image::open(path).unwrap();
+
+    // Get width & height
+    let width = img.width();
+    let height = img.height();
+
+    let third_point_height = (height / 3) * 2;
+    let mid_point_width = width / 2;
+    let remaining_height = height - third_point_height;
+
+    // crop image
+    let cropped_img = img.crop_imm(0, third_point_height, mid_point_width, remaining_height);
+
+    // get qr from cropped image
+    let results = bardecoder::default_decoder().decode(&cropped_img);
+    // TODO: get first qr, parse, query db, get info, determine filename
+    for result in results {
+        println!("{}", result.unwrap());
+    }
+
+    // Rotate image 90 degrees clockwise
+    let img = img.rotate270();
+
+    // Generate PDF
+    let (doc, page1, layer1) =
+        PdfDocument::new("PDF_Document_title", Mm(297.0), Mm(210.0), "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();
+    let img_transform = printpdf::ImageTransform {
+        dpi: Some(200.0),
+        ..img_transform
+    };
+
+    pdf_image.add_to_layer(current_layer, img_transform);
+
+    // 
+    doc.save(&mut BufWriter::new(
+        File::create(format!("{}output.pdf", SCAN_PATH)).unwrap(),
+    ))
+    .unwrap();
+}

backend/src/main.rs

@@ -68,6 +68,10 @@ async fn rocket() -> _ {
             controller::classroom::get_expiration_date,
             controller::classroom::set_expiration_date_options,
             controller::classroom::set_expiration_date,
+            //
+            // Scans routes
+            //
+            controller::scans::detect_scans,
         ],
     )
 }

frontend/index.html

@@ -9,7 +9,7 @@
 
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-    <link href="https://fonts.googleapis.com/css2?family=Inconsolata&family=Inter:wght@400;700;900&display=swap" rel="stylesheet">
+    <link href="https://fonts.googleapis.com/css2?family=Inconsolata&family=Inter:wght@400;500;700;900&display=swap" rel="stylesheet">
 
     <style type="text/css">
         @font-face {

frontend/src/App.tsx

@@ -3,6 +3,7 @@ import { type Component } from "solid-js";
 import { Certs } from "./certs";
 import { NavRail } from "./components/NavRail";
 import { OnlineClassroom } from "./OnlineClassroom";
+import { Scans } from "./Scans";
 
 const App: Component = () => (
     <div class="grid grid-cols-[5rem_auto]">
@@ -11,7 +12,7 @@ const App: Component = () => (
             <Route path="/" component={() => <Builder />} />
             <Route path="/certs" component={Certs} />
             <Route path="/accesos" component={OnlineClassroom} />
-            <Route path="/escaneo" component={() => <p>En construccion</p>} />
+            <Route path="/escaneo" component={Scans} />
         </Routes>
     </div>
 );

frontend/src/Scans/index.tsx

@@ -0,0 +1,115 @@
+import { FilledButton } from "../components/FilledButton";
+import { FilledCard } from "../components/FilledCard";
+
+export function Scans() {
+    const detectScans = () => {
+        fetch(`${import.meta.env.VITE_BACKEND_URL}/api/scans/detect`)
+            .then((res) => res.json())
+            .then(console.log);
+    };
+
+    return (
+        <div class="grid grid-cols-[25rem_25rem_auto]">
+            <div>
+                <FilledCard>
+                    <h1 class="py-2 px-4 font-medium text-xl mb-2">
+                        Ruta de la carpeta "Certificados"
+                    </h1>
+                    <div class="px-2">
+                        <input
+                            class="w-full p-2 border border-c-outline rounded-md font-mono"
+                            type="text"
+                            value="/srv/srv/shares/eegsac/ESCANEOS/"
+                        />
+
+                        <p class="py-2 px-2">
+                            Si no hay ningún problema con la ruta, no es necesario cambiarla.
+                            <br />
+                            Esta ruta es relativa al servidor, no al cliente.
+                        </p>
+                    </div>
+                </FilledCard>
+
+                <FilledCard>
+                    <h1 class="py-2 px-4 font-medium text-xl mb-2">
+                        Parámetros de detección
+                    </h1>
+                    <div class="px-4 pb-4">
+                        Para que el sistema detecte y clasifique automáticamente los escaneos
+                        se debe cumplir lo siguiente:
+                        <ol class="py-2 px-2 list-decimal list-inside">
+                            <li>
+                                Escanear el certificado en formato&nbsp;
+                                <code class="border border-c-outline rounded p-1 bg-c-background">
+                                    jpg
+                                </code>
+                            </li>
+                            <li>
+                                El nombre del archivo debe iniciar con&nbsp;
+                                <code class="border border-c-outline rounded p-1 bg-c-background">
+                                    eeg
+                                </code>
+                            </li>
+                            <li>
+                                El nombre del archivo debe terminar en&nbsp;
+                                <code class="border border-c-outline rounded p-1 bg-c-background">
+                                    .jpg
+                                </code>
+                            </li>
+                            <li>
+                                El nombre del archivo puede tener otras letras en medio,
+                                siempre que se cumplan las condiciones anteriores.
+                            </li>
+                        </ol>
+                        Por ejemplo, los siguientes nombres de archivo son válidos:
+                        <ul class="py-2 px-2 list-disc list-inside">
+                            <li>
+                                <code class="border border-c-outline rounded p-1 bg-c-background">
+                                    eeg.jpg
+                                </code>
+                            </li>
+                            <li>
+                                <code class="border border-c-outline rounded p-1 bg-c-background">
+                                    eeg0001.jpg
+                                </code>
+                            </li>
+                            <li>
+                                <code class="border border-c-outline rounded p-1 bg-c-background">
+                                    eeg archivo con letras en medio.jpg
+                                </code>
+                            </li>
+                        </ul>
+                    </div>
+                </FilledCard>
+            </div>
+            <div>
+                <FilledCard>
+                    <h1 class="py-2 px-4 font-medium text-xl mb-2">
+                        Detectar escaneos
+                    </h1>
+                    <div class="px-4 pb-4">
+                        El siguiente botón detectará los escaneos en la carpeta
+                        que cumplen con los parámetros de detección, y los mostrará
+                        en una lista.
+                        <br />
+                        <FilledButton
+                            class="mt-2"
+                            onClick={detectScans}
+                        >
+                            Detectar escaneos
+                        </FilledButton>
+                    </div>
+                </FilledCard>
+                <FilledCard class="border border-c-outline overflow-hidden">
+                    <h1 class="p-3 font-medium text-xl">
+                        Escaneos detectados
+                    </h1>
+
+                    <div class="bg-c-surface p-4">
+                        :D
+                    </div>
+                </FilledCard>
+            </div>
+        </div>
+    );
+}

frontend/src/components/FilledButton.tsx

@@ -4,6 +4,7 @@ export function FilledButton(props: {
     children?: Array<JSX.Element> | JSX.Element,
     class?: string,
     type?: "button" | "submit",
+    onClick?: () => void,
     disabled?: boolean,
 }) {
     return (
@@ -11,6 +12,7 @@ export function FilledButton(props: {
             class={`bg-c-primary text-c-on-primary px-4 py-2 rounded-full cursor-pointer mt-4
                     disabled:opacity-50 disabled:cursor-not-allowed ${props.class}`}
             disabled={props.disabled}
+            onClick={props.onClick}
         >
             {props.children}
         </button>