add answer entity and dto

src/answer.rs

@@ -0,0 +1,49 @@
+/// Contains struct definitions regarding answers
+use crate::*;
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct Answer {
+    content: String,
+    question_id: u8,
+}
+
+impl Answer {
+    pub fn _new(_id: u8, content: String, question_id: u8) -> Self {
+        Answer {
+            content,
+            question_id,
+        }
+    }
+    pub fn to_dto(&self, id: u8) -> AnswerDTO {
+        AnswerDTO {
+            id,
+            content: self.content.clone(),
+            question_id: self.question_id,
+        }
+    }
+}
+
+#[derive(Deserialize, Serialize, Clone, Debug)]
+pub struct AnswerDTO {
+    id: u8,
+    content: String,
+    question_id: u8,
+}
+
+/// Answer Data Transfer Object, a representation of the expected serialized JSON formated of answer regarding requests, responses, and our answer json file
+impl AnswerDTO {
+    pub fn to_entity(&self) -> (u8, Answer) {
+        (
+            self.id,
+            Answer {
+                content: self.content.clone(),
+                question_id: self.question_id,
+            },
+        )
+    }
+}
+impl IntoResponse for &AnswerDTO {
+    fn into_response(self) -> Response {
+        (StatusCode::OK, Json(&self)).into_response()
+    }
+}

src/api.rs

@@ -1,5 +1,5 @@
 /// All API route handlers of the application
-use self::{question::QuestionDTO, store::Store};
+use self::{answer::AnswerDTO, question::QuestionDTO, store::Store};
 use crate::*;
 const DEFAULT_PAGE: usize = 0;
 const DEFAULT_PAGE_SIZE: usize = 10;
@@ -32,7 +32,11 @@ pub async fn read_questions(
     let page: usize = pagination.page.unwrap_or(DEFAULT_PAGE);
     let size: usize = pagination.size.unwrap_or(DEFAULT_PAGE_SIZE);
     let start: usize = page * size;
-    (StatusCode::OK, Json(store.read().await.fetch_many(start, size))).into_response()
+    (
+        StatusCode::OK,
+        Json(store.read().await.fetch_many(start, size)),
+    )
+        .into_response()
 }
 
 /// Creates a new question
@@ -89,10 +93,14 @@ pub async fn delete_question(
         Err(e) => (StatusCode::NOT_FOUND, e).into_response(),
     }
 }
-/// Create an Answer
+/// Create an Answer - WIP
 /// # Parameters
+/// `answer_dto` Form URL encoded answer DTO
 /// # Returns
-pub async fn create_answer(State(_store): State<Arc<RwLock<Store>>> /*TODO */) -> Response {
+pub async fn create_answer(
+    State(_store): State<Arc<RwLock<Store>>>,
+    Form(_answer_dto): Form<AnswerDTO>,
+) -> Response {
     todo!()
 }
 
@@ -101,4 +109,3 @@ pub async fn create_answer(State(_store): State<Arc<RwLock<Store>>> /*TODO */) -
     page: Option<usize>,
     size: Option<usize>,
 }
-

src/main.rs

@@ -1,3 +1,4 @@
+mod answer;
 mod api;
 mod question;
 mod store;
@@ -6,7 +7,7 @@ use axum::{
     http::StatusCode,
     response::{IntoResponse, Response},
     routing::{delete, get, post, put},
-    Json, Router,
+    Form, Json, Router,
 };
 use serde::{Deserialize, Serialize};
 use std::{

src/store.rs

@@ -4,12 +4,13 @@
 use self::question::{Question, QuestionDTO};
 use crate::*;
 
-const DB_PATH: &str = "./questions.json";
+const QUESTIONS_DB_PATH: &str = "./questions.json";
 
 #[derive(Debug)]
 pub struct Store {
     file: File,
     questions: HashMap<u8, Question>,
+    // answers: HashMap<u8, Answer>, //WIP, add answers to store
 }
 
 impl Store {
@@ -17,10 +18,13 @@ impl Store {
     // Otherwise we create questions.json.
     // JSON formatting and I/O errors possible here are semi-handled with a message, but ultimetly we will panic in those cases
     pub fn new() -> Self {
-        let file: File = File::create_new(DB_PATH)
+        let file: File = File::create_new(QUESTIONS_DB_PATH)
             .or_else(|e| {
                 if e.kind() == ErrorKind::AlreadyExists {
-                    File::options().read(true).write(true).open(DB_PATH)
+                    File::options()
+                        .read(true)
+                        .write(true)
+                        .open(QUESTIONS_DB_PATH)
                 } else {
                     Err(e)
                 }
@@ -89,7 +93,12 @@ impl Store {
     }
     //by nature of the hashmap, pagination does not follow id order
     pub fn fetch_many(&self, start: usize, size: usize) -> Vec<QuestionDTO> {
-        self.questions.iter().map(|q|q.1.to_dto(*q.0)).skip(start).take(size).collect()
+        self.questions
+            .iter()
+            .map(|q| q.1.to_dto(*q.0))
+            .skip(start)
+            .take(size)
+            .collect()
     }
     pub fn update(&mut self, id: u8, question: Question) -> Result<Question, String> {
         if !self.questions.contains_key(&id) {