todo shhit. figure it out.

do post checking later

src/handler.rs

@@ -0,0 +1,155 @@
+use crate::{
+    model::{QueryOptions, Todo, UpdateTodoSchema},
+    response::{GenericResponse, SingleTodoResponse, TodoData, TodoListResponse},
+    WebResult, DB,
+};
+use chrono::prelude::*;
+use uuid::Uuid;
+use warp::{http::StatusCode, reply::json, reply::with_status, Reply};
+
+pub async fn health_checker_handler() -> WebResult<impl Reply> {
+    const MESSAGE: &str = "Build Simple CRUD API with Rust";
+
+    let response_json = &GenericResponse {
+        status: "success".to_string(),
+        message: MESSAGE.to_string(),
+    };
+    Ok(json(response_json))
+}
+
+pub async fn todos_list_handler(opts: QueryOptions, db: DB) -> WebResult<impl Reply> {
+    let todos = db.lock().await;
+
+    let limit = opts.limit.unwrap_or(10);
+    let offset = (opts.page.unwrap_or(1) - 1) * limit;
+
+    let todos: Vec<Todo> = todos.clone().into_iter().skip(offset).take(limit).collect();
+
+    let json_response = TodoListResponse {
+        status: "success".to_string(),
+        results: todos.len(),
+        todos,
+    };
+    Ok(json(&json_response))
+}
+
+pub async fn create_todo_handler(mut body: Todo, db: DB) -> WebResult<impl Reply> {
+    let mut vec = db.lock().await;
+
+    for todo in vec.iter() {
+        if todo.title == body.title {
+            let error_response = GenericResponse {
+                status: "fail".to_string(),
+                message: format!("Todo with title: '{}' already exists", todo.title),
+            };
+            return Ok(with_status(json(&error_response), StatusCode::CONFLICT));
+        }
+    }
+
+    let uuid_id = Uuid::new_v4();
+    let datetime = Utc::now();
+
+    body.id = Some(uuid_id.to_string());
+    body.completed = Some(false);
+    body.createdAt = Some(datetime);
+    body.updatedAt = Some(datetime);
+
+    let todo = body.to_owned();
+
+    vec.push(body);
+
+    let json_response = SingleTodoResponse {
+        status: "success".to_string(),
+        data: TodoData { todo },
+    };
+
+    Ok(with_status(json(&json_response), StatusCode::CREATED))
+}
+
+pub async fn get_todo_handler(id: String, db: DB) -> WebResult<impl Reply> {
+    let vec = db.lock().await;
+
+    for todo in vec.iter() {
+        if todo.id == Some(id.to_owned()) {
+            let json_response = SingleTodoResponse {
+                status: "success".to_string(),
+                data: TodoData { todo: todo.clone() },
+            };
+
+            return Ok(with_status(json(&json_response), StatusCode::OK));
+        }
+    }
+
+    let error_response = GenericResponse {
+        status: "fail".to_string(),
+        message: format!("Todo with ID: {} not found", id),
+    };
+    return Ok(with_status(json(&error_response), StatusCode::NOT_FOUND));
+}
+
+pub async fn edit_todo_handler(
+    id: String,
+    body: UpdateTodoSchema,
+    db: DB,
+) -> WebResult<impl Reply> {
+    let mut vec = db.lock().await;
+
+    for todo in vec.iter_mut() {
+        if todo.id == Some(id.clone()) {
+            let datetime = Utc::now();
+            let title = body.title.to_owned().unwrap_or(todo.title.to_owned());
+            let content = body.content.to_owned().unwrap_or(todo.content.to_owned());
+            let payload = Todo {
+                id: todo.id.to_owned(),
+                title: if !title.is_empty() {
+                    title
+                } else {
+                    todo.title.to_owned()
+                },
+                content: if !content.is_empty() {
+                    content
+                } else {
+                    todo.content.to_owned()
+                },
+                completed: if body.completed.is_some() {
+                    body.completed
+                } else {
+                    todo.completed
+                },
+                createdAt: todo.createdAt,
+                updatedAt: Some(datetime),
+            };
+            *todo = payload;
+
+            let json_response = SingleTodoResponse {
+                status: "success".to_string(),
+                data: TodoData { todo: todo.clone() },
+            };
+            return Ok(with_status(json(&json_response), StatusCode::OK));
+        }
+    }
+
+    let error_response = GenericResponse {
+        status: "fail".to_string(),
+        message: format!("Todo with ID: {} not found", id),
+    };
+
+    Ok(with_status(json(&error_response), StatusCode::NOT_FOUND))
+}
+
+pub async fn delete_todo_handler(id: String, db: DB) -> WebResult<impl Reply> {
+    let mut vec = db.lock().await;
+
+    for todo in vec.iter_mut() {
+        if todo.id == Some(id.clone()) {
+            vec.retain(|todo| todo.id != Some(id.to_owned()));
+            return Ok(with_status(json(&""), StatusCode::NO_CONTENT));
+        }
+    }
+
+    let error_response = GenericResponse {
+        status: "fail".to_string(),
+        message: format!("Todo with ID: {} not found", id),
+    };
+    Ok(with_status(json(&error_response), StatusCode::NOT_FOUND))
+}

src/main.rs

@@ -1,39 +1,66 @@
-use std::env;
+mod handler;
+mod model;
+mod response;
 
-use serde::Serialize;
+use model::{QueryOptions, DB};
-use warp::{reply::json, Filter, Rejection, Reply};
+use warp::{http::Method, Filter, Rejection};
 
 type WebResult<T> = std::result::Result<T, Rejection>;
 
-#[derive(Serialize)]
+#[tokio::main]
-pub struct GenericResponse {
-    pub status: String,
-    pub message: String,
-}
-
-pub async fn health_checker_handler() -> WebResult<impl Reply> {
-    const MESSAGE: &str = "This is a Simple CRUD API";
-
-    let jsonresponse = GenericResponse {
-        status: "success".to_string(),
-        message: MESSAGE.to_string(),
-    };
-
-    Ok(json(&jsonresponse))
-}
-
-#[tokio::main] // needed for async main
 async fn main() {
     pretty_env_logger::init();
 
+    let db = model::todo_db();
+
+    let todo_router = warp::path!("api" / "todos");
+    let todo_router_id = warp::path!("api" / "todos" / String);
+
     let health_checker = warp::path!("api" / "healthchecker")
         .and(warp::get())
-        .and_then(health_checker_handler); // don't call the function here!
+        .and_then(handler::health_checker_handler);
 
-    let routes = health_checker.with(warp::log("api"));
+    let cors = warp::cors()
+        .allow_methods(&[Method::GET, Method::POST, Method::PATCH, Method::DELETE])
+        .allow_origins(vec!["http://localhost:3000/", "http://localhost:8000/"])
+        .allow_headers(vec!["content-type"])
+        .allow_credentials(true);
 
-    println!("[LOG]: Server started successfully.");
+    let todo_routes = todo_router
+        .and(warp::post())
+        .and(warp::body::json())
+        .and(with_db(db.clone()))
+        .and_then(handler::create_todo_handler)
+        .or(todo_router
+            .and(warp::get())
+            .and(warp::query::<QueryOptions>())
+            .and(with_db(db.clone()))
+            .and_then(handler::todos_list_handler));
 
-    // serve the server on localhost:8080
+    let todo_routes_id = todo_router_id
+        .and(warp::patch())
+        .and(warp::body::json())
+        .and(with_db(db.clone()))
+        .and_then(handler::edit_todo_handler)
+        .or(todo_router_id
+            .and(warp::get())
+            .and(with_db(db.clone()))
+            .and_then(handler::get_todo_handler))
+        .or(todo_router_id
+            .and(warp::delete())
+            .and(with_db(db.clone()))
+            .and_then(handler::delete_todo_handler));
+
+    let routes = todo_routes
+        .with(cors)
+        .with(warp::log("api"))
+        .or(todo_routes_id)
+        .or(health_checker);
+
+    println!("🚀 Server started successfully");
     warp::serve(routes).run(([0, 0, 0, 0], 8080)).await;
 }
+
+fn with_db(db: DB) -> impl Filter<Extract = (DB,), Error = std::convert::Infallible> + Clone {
+    warp::any().map(move || db.clone())
+}

src/model.rs

@@ -0,0 +1,35 @@
+use chrono::prelude::*;
+use serde::{Deserialize, Serialize};
+use std::sync::Arc;
+use tokio::sync::Mutex;
+
+#[derive(Debug, Deserialize, Serialize, Clone)]
+pub struct Todo {
+    pub id: Option<String>,
+    pub title: String,
+    pub content: String,
+    pub completed: Option<bool>,
+    pub createdAt: Option<DateTime<Utc>>,
+    pub updatedAt: Option<DateTime<Utc>>,
+}
+
+pub type DB = Arc<Mutex<Vec<Todo>>>;
+
+pub fn todo_db() -> DB {
+    // We return a Thread-safe, shared, mutable empty vector for concurrent access
+    // This is so fucking gross to explain
+    Arc::new(Mutex::new(Vec::new()))
+}
+
+#[derive(Debug,Deserialize)]
+pub struct QueryOptions {
+    pub page: Option<usize>,
+    pub limit: Option<usize>,
+}
+
+#[derive(Debug,Deserialize,Serialize,Clone)]
+pub struct UpdateTodoSchema {
+    pub title: Option<String>,
+    pub content: Option<String>,
+    pub completed: Option<bool>,
+}

src/response.rs

@@ -0,0 +1,31 @@
+use crate::model::Todo;
+use serde::Serialize;
+
+#[derive(Serialize)]
+pub struct GenericResponse {
+    pub status: String,
+    pub message: String,
+}
+
+#[derive(Serialize, Debug)]
+pub struct TodoData {
+    pub todo: Todo,
+}
+
+#[derive(Serialize, Debug)]
+pub struct SingleTodoResponse {
+    pub status: String,
+    pub data: TodoData,
+}
+
+#[derive(Serialize, Debug)]
+pub struct TodoListResponse {
+    pub status: String,
+    pub results: usize,
+    pub todos: Vec<Todo>,
+}
+
+/*
+Fuck this is so much fucking boilerplate. java is nothing compared to this shit
+rust is good but overkill . could've done this shit in fucking javascript or python ffs
+*/