add functions for adding users/messages and getting it from DB

Cargo.lock

@@ -1209,6 +1209,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d5f38ee71cbab2c827ec0ac24e76f82eca723cee92c509a65f67dee393c25112"
 dependencies = [
  "bitflags",
+ "chrono",
  "fallible-iterator",
  "fallible-streaming-iterator",
  "hashlink",

Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 
 [dependencies]
 ntru = "0.5.6"
-rusqlite = "0.24.2"
+rusqlite = {version = "0.24.2", features = ["chrono"]}
 toml = "0.5.6"
 tungstenite = "0.12.0"
 tokio = { version = "0.3.3", features = ["full"] }

src/db/messages.rs

@@ -1,4 +1,5 @@
 use super::types::Message;
+
 use rusqlite::{params, Connection, Result};
 
 pub fn select_message_by_id(id: u64, conn: &Connection) -> Result<Message> {
@@ -9,10 +10,40 @@ pub fn select_all_user_message(id: u64, conn: &Connection) -> Result<Vec<Message
     unimplemented!();
 }
 
-pub fn select_n_last_messages(user_id: u64, count: u32, conn: &Connection) -> Result<Vec<Message>> {
-    unimplemented!();
+pub fn select_n_last_messages(user_id: u32, start: u32, count: u32,  conn: &Connection) -> Result<Vec<Message>> {
+    let mut selected = conn.prepare("SELECT * FROM messages WHERE user_id = ?1 AND id > ?2 LIMIT ?3")?;
+    let message_iter = selected.query_map(params![user_id, start, count], |row| {
+        Ok(Message {
+            id: row.get(0)?,
+            date: row.get(1)?,
+            user_id: row.get(2)?,
+            message: row.get(3)?,
+        })
+    })?;
+    let mut users: Vec<Message> = Vec::new();
+    for message in message_iter {
+        log::info!("User: {:?}", (&message));
+        users.push(message?);
+    }
+    log::info!("All users loaded to memory");
+    Ok(users)
 }
 
-pub fn add_message(message: Message, conn: &Connection) -> Result<()>{
-    unimplemented!();
+pub fn add_message(message: Message, conn: &Connection) -> Result<()> {
+    match conn.execute(
+        "INSERT INTO messages (
+                  id,
+                  user_id,
+                  date,
+                  message
+                  ) VALUES (?1, ?2, ?3, ?4)",
+        params![message.id,message.user_id, message.date, message.message],
+    ) {
+        Ok(_) => log::info!("message {:} added succsessfully!", message.id),
+        Err(e) => {
+            log::error!("failed to insert message {:?}", e);
+            return Err(e);
+        }
+    }
+    Ok(())
 }

src/db/mod.rs

@@ -23,6 +23,7 @@ fn create_db(conn: &Connection) -> Result<()> {
         "CREATE TABLE messages (
                   id                      INTEGER PRIMARY KEY,
                   user_id                 TEXT NOT NULL,
+                  date                    datetime NOT NULL,
                   message                 TEXT NOT NULL
                   )",
         params![],

src/db/types.rs

@@ -4,8 +4,8 @@ use fcpv2::types::{traits::FcpRequest, SSK};
 
 pub const DB_PATH: &str = "hole.db";
 
-pub type SignKey = SSK;
-pub type InsertKey = String;
+pub type SignKey = String;
+pub type InsertKey = SSK;
 
 #[derive(Debug)]
 pub struct User {
@@ -19,7 +19,7 @@ pub struct User {
 #[derive(Debug)]
 pub struct Message {
     pub id: u32,
-    pub date: DateTime<Local>,
+    pub date: NaiveDateTime,
     pub user_id: u32,
     pub message: String,
 }

src/db/users.rs

@@ -4,16 +4,23 @@ use fcpv2::types::{SSK, traits::FcpParser};
 use rusqlite::{params, Connection, Result, NO_PARAMS};
 
 pub fn get_user_by_id(id: u32, conn: &Connection) -> Result<User> {
-    unimplemented!();
-}
-
-pub fn get_user_by_name(String: u32, conn: &Connection) -> Result<User> {
-    unimplemented!();
+    let mut selected = conn.prepare("SELECT * FROM users WHERE id = ?")?;
+    let mut user_iter = selected.query_map(params![id], |row| {
+        Ok(User {
+            id: row.get(0)?,
+            name: row.get(1)?,
+            sign_key: row.get(2)?,
+            insert_key: row.get(3)?,
+            messages_count: row.get(4)?,
+        })
+    })?;
+    let user = user_iter.next().unwrap();
+    log::info!("User {:} founded", id);
+    user
 }
 
 pub fn load_all_users(conn: &Connection) -> Result<Vec<User>> {
     let mut selected = conn.prepare("SELECT * FROM users")?;
-    log::info!("add user to USERS successfully!");
     let user_iter = selected.query_map(params![], |row| {
         Ok(User {
             id: row.get(0)?,
@@ -28,6 +35,7 @@ pub fn load_all_users(conn: &Connection) -> Result<Vec<User>> {
         log::info!("User: {:?}", (&user));
         users.push(user?);
     }
+    log::info!("All users loaded to memory");
     Ok(users)
 }
 

src/main.rs

@@ -1,12 +1,15 @@
 mod chat;
 mod db;
 mod encrypting;
-mod fcpv2;
 use async_std::io;
 use chat::front_conn::listen_client;
 use chat::serv_conn::listen_server;
 use chat::types::PackedMessage;
+use chrono::Utc;
+use db::users;
+use fcpv2::types::{traits::FcpParser, SSK};
 use log;
+use simple_logger::SimpleLogger;
 use std::{
     sync::{
         mpsc,
@@ -14,7 +17,6 @@ use std::{
     },
     thread,
 };
-use simple_logger::SimpleLogger;
 /*
                         +-----------------------------------------------------------------------------------+
                         |                                  Client                                           |
@@ -45,7 +47,46 @@ use simple_logger::SimpleLogger;
 
 fn main() -> io::Result<()> {
     SimpleLogger::new().init().unwrap();
-    db::start_db().unwrap();
+    let conn = db::start_db().unwrap();
+    users::add_user(db::types::User{
+        id: 9349,
+        name: "Nick".to_string(),
+        sign_key: "string".to_string(),
+        insert_key: fcpv2::types::SSK::parse("SSK@Rgt0qM8D24DltliV2-JE9tYLcrgGAKeDwkz41I3JBPs,p~c8c7FXcJjhcf2vA-Xm0Mjyw1o~xn7L2-T8zlBA1IU").unwrap(),
+        messages_count: 1,
+    }, &conn);
+    let time: chrono::DateTime<chrono::offset::FixedOffset> =
+        chrono::DateTime::parse_from_rfc3339("2021-03-18T04:22:42.501Z").unwrap();
+    db::messages::add_message(
+        db::types::Message {
+            user_id: 9349,
+            id: 1,
+            date: time.naive_utc(),
+            message: "hey duude".to_string(),
+        },
+        &conn,
+    )
+    .unwrap();
+    db::messages::add_message(
+        db::types::Message {
+            user_id: 9349,
+            id: 2,
+            date: time.naive_utc(),
+            message: "what do you think".to_string(),
+        },
+        &conn,
+    )
+    .unwrap();
+    db::messages::add_message(
+        db::types::Message {
+            user_id: 9349,
+            id: 3,
+            date: time.naive_utc(),
+            message: "about that".to_string(),
+        },
+        &conn,
+    )
+    .unwrap();
 
     let (to_server_sender, server_receiver): (Sender<PackedMessage>, Receiver<PackedMessage>) =
         mpsc::channel();