feat: initial work on MongoDB support

swordfish-common/src/database/katana.rs

@@ -0,0 +1,29 @@
+use mongodb::Collection;
+
+use crate::database;
+use crate::structs::Card;
+use std::sync::OnceLock;
+
+static KATANA: OnceLock<Collection<Card>> = OnceLock::new();
+
+///
+/// Initialize the "katana" collection in MongoDB
+/// 
+/// This method is called automatically when you initialize the
+/// database module.
+/// 
+pub fn init() {
+    KATANA
+        .set(
+            database::MONGO_DATABASE
+                .get()
+                .unwrap()
+                .collection::<Card>("katana"),
+        )
+        .unwrap();
+}
+
+fn query_card() {
+    todo!("Query card from database");
+    println!("{:?}", card);
+}

swordfish-common/src/database/mod.rs

@@ -0,0 +1,37 @@
+pub mod katana;
+
+use mongodb::options::ClientOptions;
+use mongodb::{Client, Database};
+use std::env;
+use std::sync::OnceLock;
+use tracing::info;
+
+static MONGO_CLIENT: OnceLock<Client> = OnceLock::new();
+static MONGO_DATABASE: OnceLock<Database> = OnceLock::new();
+
+async fn init() {
+    let mut options =
+        ClientOptions::parse(env::var("MONGODB_URL").expect("MongoDB url must be provided"))
+            .await
+            .unwrap();
+    match env::var("MONGODB_USERNAME") {
+        Ok(username) => {
+            options.credential = Some(
+                mongodb::options::Credential::builder()
+                    .username(username)
+                    .password(
+                        env::var("MONGODB_PASSWORD").expect("MongoDB password must be provided"),
+                    )
+                    .build(),
+            );
+        }
+        Err(_) => {
+            info!("No MongoDB username provided, using authentication provided in the url");
+        }
+    }
+    MONGO_CLIENT
+        .set(Client::with_options(options).unwrap())
+        .unwrap();
+    MONGO_DATABASE.set(MONGO_CLIENT.get().unwrap().database("swordfish"));
+    katana::init();
+}

swordfish-common/src/lib.rs

@@ -3,10 +3,11 @@ pub use log;
 pub use tracing::{debug, error, info, trace, warn};
 use tracing_subscriber::{self, fmt, EnvFilter};
 pub mod constants;
+pub mod database;
 pub mod structs;
 pub mod tesseract;
 
-pub fn setup_logger(level: &str) -> Result<(), fern::InitError> {
+pub fn setup_logger(level: &str) -> Result<(), ()> {
     let formatter = fmt::format()
         .with_level(true)
         .with_target(true)

swordfish-common/src/tesseract/libtesseract.rs

@@ -1,7 +1,8 @@
 pub use leptess::{LepTess, Variable};
-use std::{sync::{
-    Arc, Mutex, LazyLock
-}, thread};
+use std::{
+    sync::{Arc, LazyLock, Mutex},
+    thread,
+};
 
 static TESSERACT: LazyLock<Arc<Mutex<LepTess>>> = LazyLock::new(|| {
     let mut lep_tess = match LepTess::new(None, "eng") {
@@ -10,7 +11,9 @@ static TESSERACT: LazyLock<Arc<Mutex<LepTess>>> = LazyLock::new(|| {
     };
     // lep_tess.set_variable(Variable::TesseditPagesegMode, "6").unwrap();
     // Use LSTM only.
-    lep_tess.set_variable(Variable::TesseditOcrEngineMode, "2").unwrap();
+    lep_tess
+        .set_variable(Variable::TesseditOcrEngineMode, "2")
+        .unwrap();
     Arc::new(Mutex::new(lep_tess))
 });
 
@@ -18,10 +21,10 @@ static mut TESSERACT_VEC: Vec<Arc<Mutex<LepTess>>> = Vec::new();
 
 ///
 /// Get a Tesseract instance.
-/// 
+///
 /// Deprecated because it provides no performance benefit, if you really need
 /// then use get_tesseract_from_vec.
-/// 
+///
 pub fn get_tesseract(numeric_only: bool) -> Arc<Mutex<LepTess>> {
     TESSERACT.clone()
 }
@@ -37,8 +40,7 @@ pub unsafe fn get_tesseract_from_vec(numeric_only: bool) -> Arc<Mutex<LepTess>>
             });
         }
         lep_tess = Arc::new(Mutex::new(init_tesseract(numeric_only).unwrap()));
-    } 
-    else {
+    } else {
         lep_tess = TESSERACT_VEC.pop().unwrap();
         thread::spawn(move || unsafe {
             let ocr = init_tesseract(numeric_only).unwrap();
@@ -53,9 +55,13 @@ pub fn init_tesseract(numeric_only: bool) -> Result<LepTess, String> {
         Ok(lep_tess) => lep_tess,
         Err(why) => return Err(format!("Failed to initialize Tesseract: {:?}", why)),
     };
-    lep_tess.set_variable(Variable::TesseditPagesegMode, "6").unwrap();
+    lep_tess
+        .set_variable(Variable::TesseditPagesegMode, "6")
+        .unwrap();
     // Use LSTM only.
-    lep_tess.set_variable(Variable::TesseditOcrEngineMode, "1").unwrap();
+    lep_tess
+        .set_variable(Variable::TesseditOcrEngineMode, "1")
+        .unwrap();
     if numeric_only {
         match lep_tess.set_variable(Variable::TesseditCharWhitelist, "0123456789") {
             Ok(_) => (),