feat: added backend for site comments

.gitignore

@@ -1,3 +1,4 @@
 /target
 /res
 .env
+database.db

Cargo.lock

@@ -7,6 +7,7 @@ name = "academic-back"
 version = "0.1.0"
 dependencies = [
  "axum",
+ "diesel",
  "dotenv",
  "reqwest",
  "serde",
@@ -168,6 +169,85 @@ version = "0.8.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
+[[package]]
+name = "darling"
+version = "0.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9cdf337090841a411e2a7f3deb9187445851f91b309c0c0a29e05f74a00a48c0"
+dependencies = [
+ "darling_core",
+ "darling_macro",
+]
+
+[[package]]
+name = "darling_core"
+version = "0.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1247195ecd7e3c85f83c8d2a366e4210d588e802133e1e355180a9870b517ea4"
+dependencies = [
+ "fnv",
+ "ident_case",
+ "proc-macro2",
+ "quote",
+ "strsim",
+ "syn",
+]
+
+[[package]]
+name = "darling_macro"
+version = "0.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d38308df82d1080de0afee5d069fa14b0326a88c14f15c5ccda35b4a6c414c81"
+dependencies = [
+ "darling_core",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "deranged"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d630bccd429a5bb5a64b5e94f693bfc48c9f8566418fda4c494cc94f911f87cc"
+dependencies = [
+ "powerfmt",
+]
+
+[[package]]
+name = "diesel"
+version = "2.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8496eeb328dce26ee9d9b73275d396d9bddb433fa30106cf6056dd8c3c2764c"
+dependencies = [
+ "diesel_derives",
+ "downcast-rs",
+ "libsqlite3-sys",
+ "sqlite-wasm-rs",
+ "time",
+]
+
+[[package]]
+name = "diesel_derives"
+version = "2.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09af0e983035368439f1383011cd87c46f41da81d0f21dc3727e2857d5a43c8e"
+dependencies = [
+ "diesel_table_macro_syntax",
+ "dsl_auto_type",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "diesel_table_macro_syntax"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fe2444076b48641147115697648dc743c2c00b61adade0f01ce67133c7babe8c"
+dependencies = [
+ "syn",
+]
+
 [[package]]
 name = "displaydoc"
 version = "0.2.5"
@@ -185,6 +265,32 @@ version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77c90badedccf4105eca100756a0b1289e191f6fcbdadd3cee1d2f614f97da8f"
 
+[[package]]
+name = "downcast-rs"
+version = "2.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "117240f60069e65410b3ae1bb213295bd828f707b5bec6596a1afc8793ce0cbc"
+
+[[package]]
+name = "dsl_auto_type"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd122633e4bef06db27737f21d3738fb89c8f6d5360d6d9d7635dda142a7757e"
+dependencies = [
+ "darling",
+ "either",
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "either"
+version = "1.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
+
 [[package]]
 name = "encoding_rs"
 version = "0.8.35"
@@ -252,6 +358,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "fragile"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28dd6caf6059519a65843af8fe2a3ae298b14b80179855aeb4adc2c1934ee619"
+
 [[package]]
 name = "futures-channel"
 version = "0.3.31"
@@ -345,6 +457,12 @@ version = "0.15.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
 
+[[package]]
+name = "heck"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+
 [[package]]
 name = "http"
 version = "1.3.1"
@@ -558,6 +676,12 @@ dependencies = [
  "zerovec",
 ]
 
+[[package]]
+name = "ident_case"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
+
 [[package]]
 name = "idna"
 version = "1.1.0"
@@ -638,6 +762,16 @@ version = "0.2.175"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a82ae493e598baaea5209805c49bbf2ea7de956d50d7da0da1164f9c6d28543"
 
+[[package]]
+name = "libsqlite3-sys"
+version = "0.35.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "133c182a6a2c87864fe97778797e46c7e999672690dc9fa3ee8e241aa4a9c13f"
+dependencies = [
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.9.4"
@@ -721,6 +855,12 @@ dependencies = [
  "tempfile",
 ]
 
+[[package]]
+name = "num-conv"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
+
 [[package]]
 name = "object"
 version = "0.36.7"
@@ -836,6 +976,12 @@ dependencies = [
  "zerovec",
 ]
 
+[[package]]
+name = "powerfmt"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.101"
@@ -1116,12 +1262,36 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "sqlite-wasm-rs"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0894a1b91dc660fbf1e6ea6f287562708e01ca1a18fa4e2c6dae0df5a05199c5"
+dependencies = [
+ "fragile",
+ "js-sys",
+ "once_cell",
+ "parking_lot",
+ "thiserror",
+ "tokio",
+ "wasm-array-cp",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+]
+
 [[package]]
 name = "stable_deref_trait"
 version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
 
+[[package]]
+name = "strsim"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
 [[package]]
 name = "subtle"
 version = "2.6.1"
@@ -1193,6 +1363,57 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "thiserror"
+version = "2.0.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3467d614147380f2e4e374161426ff399c91084acd2363eaf549172b3d5e60c0"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "2.0.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c5e1be1c48b9172ee610da68fd9cd2770e7a4056cb3fc98710ee6906f0c7960"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "time"
+version = "0.3.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91e7d9e3bb61134e77bde20dd4825b97c010155709965fedf0f49bb138e52a9d"
+dependencies = [
+ "deranged",
+ "itoa",
+ "num-conv",
+ "powerfmt",
+ "serde",
+ "time-core",
+ "time-macros",
+]
+
+[[package]]
+name = "time-core"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40868e7c1d2f0b8d73e4a8c7f0ff63af4f6d19be117e90bd73eb1d62cf831c6b"
+
+[[package]]
+name = "time-macros"
+version = "0.2.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30cfb0125f12d9c277f35663a0a33f8c30190f4e4574868a330595412d34ebf3"
+dependencies = [
+ "num-conv",
+ "time-core",
+]
+
 [[package]]
 name = "tinystr"
 version = "0.8.1"
@@ -1399,6 +1620,16 @@ dependencies = [
  "wit-bindgen",
 ]
 
+[[package]]
+name = "wasm-array-cp"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb633b3e235f0ebe0a35162adc1e0293fc4b7e3f3a6fc7b5374d80464267ff84"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.100"

Cargo.toml

@@ -12,3 +12,4 @@ serde_json = "1.0.143"
 tokio = { version = "1.47.1", features = ["full"] }
 tower = "0.5.2"
 tower-http = { version = "0.6.6", features = ["cors"]}
+diesel = { version = "2.2.0", features = ["sqlite", "returning_clauses_for_sqlite_3_35"] }

diesel.toml

@@ -0,0 +1,9 @@
+# For documentation on how to configure this file,
+# see https://diesel.rs/guides/configuring-diesel-cli
+
+[print_schema]
+file = "src/schema.rs"
+custom_type_derives = ["diesel::query_builder::QueryId", "Clone"]
+
+[migrations_directory]
+dir = "/home/alzalia/Documents/gits/academic-back/migrations"

migrations/2025-09-23-083540-0000_create_comments/down.sql

@@ -0,0 +1,2 @@
+-- This file should undo anything in `up.sql`
+DROP TABLE comments

migrations/2025-09-23-083540-0000_create_comments/up.sql

@@ -0,0 +1,6 @@
+-- Your SQL goes here
+CREATE TABLE comments (
+    id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    author TEXT NOT NULL,
+    content TEXT NOT NULL
+);

src/comments.rs

@@ -0,0 +1,65 @@
+use crate::models::{Comment, CreateCommentRequest, NewComment};
+use axum::Json;
+use diesel::prelude::*;
+use reqwest::StatusCode;
+
+/*
+* =================
+* ====< UTILS >====
+* =================
+*/
+
+pub fn establish_connection() -> Result<SqliteConnection, diesel::result::ConnectionError> {
+    let db_url = dotenv::var("DATABASE_URL").map_err(|_| {
+        diesel::result::ConnectionError::BadConnection("DATABASE_URL not set".into())
+    })?;
+    SqliteConnection::establish(&db_url)
+}
+
+pub fn create_comment(
+    conn: &mut SqliteConnection,
+    author: &str,
+    content: &str,
+) -> Result<Comment, diesel::result::Error> {
+    use crate::schema::comments;
+
+    let new_comment = NewComment { author, content };
+
+    diesel::insert_into(comments::table)
+        .values(&new_comment)
+        .returning(Comment::as_returning())
+        .get_result(conn)
+}
+
+pub fn fetch_comments(conn: &mut SqliteConnection) -> Result<Vec<Comment>, diesel::result::Error> {
+    use crate::schema::comments::dsl::*;
+
+    comments.load::<Comment>(conn)
+}
+
+/*
+* ==================
+* ====< ROUTES >====
+* ==================
+*/
+
+pub async fn post_comment(
+    Json(payload): Json<CreateCommentRequest>,
+) -> (StatusCode, Json<Option<Comment>>) {
+    if let Ok(mut conn) = establish_connection() {
+        let new_comment = create_comment(&mut conn, &payload.author, &payload.content).unwrap();
+        (StatusCode::OK, Json(Some(new_comment)))
+    } else {
+        (StatusCode::INTERNAL_SERVER_ERROR, Json(None))
+    }
+}
+
+pub async fn get_comments() -> (StatusCode, Json<Option<Vec<Comment>>>) {
+    if let Ok(mut conn) = establish_connection()
+        && let Ok(comments) = fetch_comments(&mut conn)
+    {
+        (StatusCode::OK, Json(Some(comments)))
+    } else {
+        (StatusCode::INTERNAL_SERVER_ERROR, Json(None))
+    }
+}

src/main.rs

@@ -1,13 +1,19 @@
 use axum::{
     Router,
     http::{Method, header},
-    routing::get,
+    routing::{get, post},
 };
 use tower_http::cors::CorsLayer;
 
-use crate::json_routes::{get_home, get_lessons, get_lessons_by_id, get_projects};
+use crate::{
+    comments::{get_comments, post_comment},
+    json_routes::{get_home, get_lessons, get_lessons_by_id, get_projects},
+};
 
+mod comments;
 mod json_routes;
+pub mod models;
+pub mod schema;
 
 #[tokio::main]
 async fn main() {
@@ -31,6 +37,8 @@ async fn main() {
         .route("/{lang}/projects", get(get_projects))
         .route("/{lang}/lessons", get(get_lessons))
         .route("/{lang}/lessons/{id}", get(get_lessons_by_id))
+        .route("/comments", get(get_comments))
+        .route("/comment/create", post(post_comment))
         .layer(cors);
 
     // run our app on port 6543

src/models.rs

@@ -0,0 +1,25 @@
+use crate::schema::comments;
+use diesel::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Queryable, Selectable, Serialize)]
+#[diesel(table_name = comments)]
+#[diesel(check_for_backend(diesel::sqlite::Sqlite))]
+pub struct Comment {
+    pub id: i32,
+    pub author: String,
+    pub content: String,
+}
+
+#[derive(Insertable, Serialize, Deserialize)]
+#[diesel(table_name = comments)]
+pub struct NewComment<'a> {
+    pub author: &'a str,
+    pub content: &'a str,
+}
+
+#[derive(Deserialize)]
+pub struct CreateCommentRequest {
+    pub author: String,
+    pub content: String,
+}

src/schema.rs

@@ -0,0 +1,9 @@
+// @generated automatically by Diesel CLI.
+
+diesel::table! {
+    comments (id) {
+        id -> Integer,
+        author -> Text,
+        content -> Text,
+    }
+}