going somewhere.

migrations/create_tables_001.sql

@@ -56,7 +56,7 @@ CREATE TABLE IF NOT EXISTS cashed_cheques
 (
     id                  INTEGER PRIMARY KEY AUTOINCREMENT,
     drawer_user_id      INTEGER NOT NULL,
-    drawer_account_id   INTEGER NOT NULL,
+    drawer_account_id   INTEGER,
     cheque_number       INTEGER NOT NULL,
     amount              INTEGER NOT NULL,
     underlying_security INTEGER NOT NULL,

src/db/README.md

@@ -6,6 +6,8 @@ erDiagram
     users ||--o{ securities : owner
     security_types ||--o{ securities: s
     securities ||--o{ accounts: ps
+    securities ||--o{ security_permissions: i
+    users ||--o{ security_permissions: i
     users ||--o{ cheques: ps
     securities ||--o{ cheques: ps
 ```

src/db/_accounts.rs

@@ -1,16 +1,23 @@
-use rusqlite::{Connection, params, Result, Row, Transaction};
+use rusqlite::{Connection, OptionalExtension, params, Result, Row, Transaction};
+use sha2::digest::typenum::op;
+use crate::db::_external_id::{Id, AccountId, UserId};
 
 use crate::db::_securities::Security;
 use crate::db::_users::User;
+use crate::db::external_id::SecurityId;
 
 pub struct Account {
-    pub id: i64,
+    id: u32,
-    pub amount: i64,
+    amount: u32,
-    pub timestamp: i64,
+    timestamp: i32,
-    pub security: Security,
+    security: Security,
 }
 
 impl Account {
+    pub fn id(&self) -> AccountId {
+        AccountId::from_id(self.id)
+    }
+
     pub fn from_row(row: &Row) -> Result<Account> {
         return Ok(Account {
             id: row.get("acc_id")?,
@@ -55,13 +62,21 @@ pub fn get_account_by_id(tx: &Transaction, id: u32) -> Result<Account> {
     return tx.query_row(q, params![id], Account::from_row);
 }
 
-pub fn create_account(tx: &Transaction, sec: &Security, user: &User) -> Result<Account> {
+pub fn create_account(tx: &Transaction, sec: &SecurityId, user: &UserId) -> Result<Account> {
     let q = "INSERT INTO accounts(security, owner, amount, timestamp)
                    VALUES (?1, ?2, 0, CURRENT_TIMESTAMP)";
-    tx.execute(q, (sec.id, user.id))?;
+    tx.execute(q, (sec, user))?;
     return get_account_by_id(tx, tx.last_insert_rowid() as u32);
 }
 
+pub fn is_owner(tx: &Transaction, account_id: &AccountId, user_id: &UserId) -> Result<bool> {
+    let q = "SELECT id FROM accounts WHERE id = ?1 AND owner = ?2";
+    let params = params![account_id, user_id];
+    let ite = |row: &Row| row.get::<usize, u32>(0);
+    let option = tx.query_row(q, params, ite).optional()?;
+    Ok(option.is_some())
+}
+
 #[cfg(test)]
 mod test {
     use rusqlite::Connection;
@@ -84,13 +99,14 @@ mod test {
         return (conn, users, securities);
     }
 
-    fn create_all_accounts(tx: &Transaction, users: &Vec<User>, secs: &Vec<Security>) -> Result<()> {
+    fn create_all_accounts(tx: &Transaction, users: &Vec<User>, secs: &Vec<Security>) -> Result<Vec<Account>> {
+        let mut ret: Vec<Account> = Vec::new();
         for sec in secs.iter() {
             for user in users.iter() {
-                create_account(&tx, sec, user)?;
+                ret.push(create_account(&tx, &sec.id(), &user.id())?);
             }
         }
-        return Ok(());
+        return Ok(ret);
     }
 
     #[test]
@@ -114,5 +130,22 @@ mod test {
         assert_eq!(0, accs.len());
         return Ok(());
     }
+
+    #[test]
+    fn test_is_owner() -> Result<()> {
+        let (mut conn, users, secs) = setup();
+        let tx = &conn.transaction()?;
+        let accounts = create_all_accounts(tx, &users, &secs)?;
+        let user_1 = users.get(0).unwrap();
+        let user_2 = users.get(1).unwrap();
+        let sec = secs.get(0).unwrap();
+
+        let acc = create_account(&tx, &sec.id(), &user_1.id())?;
+
+        assert!(is_owner(tx, &acc.id(), &user_1.id())?);
+        assert!(!is_owner(tx, &acc.id(), &user_2.id())?);
+
+        Ok(())
+    }
 }
 

src/db/_cheques.rs

@@ -1,36 +1,33 @@
 use rusqlite::{Result, Transaction};
 
-use crate::db::_external_id::{AccountId, SecurityId};
+use crate::db::_external_id::{AccountId, SecurityId, UserId};
 
+#[derive(Debug)]
 pub struct SecurityEmitterCheque {
-    pub drawer_user_id: AccountId,
+    pub drawer_user_id: UserId,
     pub security_id: SecurityId,
-    pub payee_user_id: AccountId,
+    pub payee_user_id: UserId,
     pub cheque_number: u32,
     pub amount: u32,
 }
 
 impl SecurityEmitterCheque {
-    fn new_safe(tx: &Transaction,
+    pub fn new(drawer_user_id: UserId,
-                drawer_user_id: AccountId,
                security_id: SecurityId,
-                payee_user_id: AccountId,
+               payee_user_id: UserId,
                amount: u32,
-                id_generator: fn() -> u32) -> Result<SecurityEmitterCheque> {
+               cheque_number: u32) -> SecurityEmitterCheque {
-        Ok(SecurityEmitterCheque {
+        SecurityEmitterCheque {
             drawer_user_id,
             security_id,
             payee_user_id,
-            cheque_number: id_generator(),
+            cheque_number,
             amount,
-        })
         }
-
-    pub fn assert_valid(&self, tx: &Transaction) -> Result<()> {
-        Ok(())
     }
 }
 
+#[cfg(test)]
 pub mod test {
     use super::*;
 

src/db/_external_id.rs

@@ -70,6 +70,13 @@ macro_rules! impl_ids {
             }
         }
 
+        impl rusqlite::ToSql for $T {
+            #[inline]
+            fn to_sql(&self) -> rusqlite::Result<rusqlite::types::ToSqlOutput<'_>> {
+                Ok(rusqlite::types::ToSqlOutput::from(self.0.get_id()))
+            }
+        }
+
         impl Id for $T {
             type Output = $T;
 
@@ -162,7 +169,7 @@ impl ExternalId {
     }
 }
 
-
+#[cfg(test)]
 pub mod test {
     use std::any::Any;
 

src/db/_securities.rs

@@ -1,5 +1,6 @@
 use rusqlite::{Connection, OptionalExtension, params, Result, Row, ToSql, Transaction};
 use serde::Serialize;
+use crate::db::_external_id::{Id, SecurityId, UserId};
 use crate::db::users::User;
 
 
@@ -33,11 +34,17 @@ impl ToSql for SecurityType {
 
 #[derive(Debug, Serialize, PartialEq)]
 pub struct Security {
-    pub id: i32,
+    id: u32,
     security_type: SecurityType,
     symbol: String,
 }
 
+impl Security {
+    pub fn id(&self) -> SecurityId {
+        SecurityId::from_id(self.id)
+    }
+}
+
 impl Security {
     pub fn from_row(row: &Row) -> Result<Security> {
         Ok(Security {
@@ -56,7 +63,7 @@ pub struct NewSecurity {
 
 pub fn create_security(tx: &Transaction,
                        sec: &NewSecurity,
-                       owner: &User) -> Result<Security> {
+                       owner: &UserId) -> Result<Security> {
     let q = "INSERT INTO
                      securities(name, symbol, security_type)
                    VALUES(?1, ?2, ?3)";
@@ -67,18 +74,18 @@ pub fn create_security(tx: &Transaction,
     let q = "INSERT INTO
                       security_permissions(security_id, user_id)
                       VALUES(?1, ?2)";
-    tx.execute(q, params![new_sec_id, owner.id])?;
+    tx.execute(q, params![new_sec_id, owner])?;
 
     return get_security_by_id(tx, new_sec_id);
 }
 
-pub fn is_owner(tx: &Transaction, sec: &Security, user: &User) -> Result<bool> {
+pub fn is_owner(tx: &Transaction, sec_id: &SecurityId, user_id: &UserId) -> Result<bool> {
     let q = "SELECT id
                   FROM security_permissions
                   WHERE security_id = ?1 AND user_id = ?2
                   LIMIT 1";
     let ret: Option<u32> = tx.query_row(q,
-                                        params![sec.id, user.id],
+                                        params![sec_id, user_id],
                                         |r| r.get(0)).optional()?;
     return Ok(ret.is_some());
 }
@@ -145,10 +152,10 @@ mod test {
         let not_owner = users.get(1).unwrap();
         let sec = mock_currency_1();
         let tx = conn.transaction()?;
-        let sec = create_security(&tx, &sec, &owner)?;
+        let sec = create_security(&tx, &sec, &owner.id())?;
 
-        assert!(is_owner(&tx, &sec, &owner)?);
+        assert!(is_owner(&tx, &sec.id(), &owner.id())?);
-        assert!(!is_owner(&tx, &sec, &not_owner)?);
+        assert!(!is_owner(&tx, &sec.id(), &not_owner.id())?);
 
         tx.commit()
     }
@@ -161,7 +168,7 @@ mod test {
 
         let sec = mock_currency_1();
         let tx = conn.transaction()?;
-        create_security(&tx, &sec, &user)?;
+        create_security(&tx, &sec, &user.id())?;
         tx.commit()?;
         let ret = list_securities(&conn)?;
         let expt = Security {
@@ -180,7 +187,7 @@ mod test {
             symbol: "B".to_string(),
         };
         let tx = conn.transaction()?;
-        create_security(&tx, &sec, &user)?;
+        create_security(&tx, &sec, &user.id())?;
         tx.commit()?;
         let ret = list_securities(&conn)?;
         assert_eq!(2, ret.len());

src/db/_test_utils.rs

@@ -2,6 +2,7 @@ use rusqlite::{Result, Transaction};
 
 use crate::db::{_securities, _users};
 use crate::db::_accounts::create_account;
+use crate::db::_external_id::UserId;
 use crate::db::_securities::{NewSecurity, Security, SecurityType};
 use crate::db::_users::User;
 use crate::db::accounts::Account;
@@ -28,22 +29,26 @@ pub fn setup_users(tx: &Transaction) -> Result<Vec<User>> {
     return Ok(vec![user_1, user_2]);
 }
 
-pub fn setup_securities(tx: &Transaction, owner: &User) -> Result<Vec<Security>> {
+pub fn setup_securities(tx: &Transaction, owner: &UserId) -> Result<Vec<Security>> {
     let sec_1 = _securities::create_security(tx, &mock_currency_1(), owner)?;
     let sec_2 = _securities::create_security(tx, &mock_currency_2(), owner)?;
     return Ok(vec![sec_1, sec_2]);
 }
 
-pub fn setup_users_and_securities(tx: &Transaction) ->  Result<(Vec<User>, Vec<Security>)>{
+pub fn setup_users_and_securities(tx: &Transaction) -> Result<(Vec<User>, Vec<Security>)> {
     let users = setup_users(tx)?;
-    let securities = setup_securities(tx, users.get(0).unwrap())?;
+    let securities = setup_securities(tx, &users.get(0).unwrap().id())?;
     Ok((users, securities))
 }
 
 pub fn setup_basic_environment(tx: &Transaction) -> Result<(Vec<User>, Vec<Security>, Vec<Account>)> {
     let (users, securities) = setup_users_and_securities(tx)?;
 
-    let acc1 = create_account(tx, securities.get(0).unwrap(), users.get(0).unwrap())?;
+    let acc1 = create_account(tx,
-    let acc2 = create_account(tx, securities.get(1).unwrap(), users.get(1).unwrap())?;
+                              &securities.get(0).unwrap().id(),
+                              &users.get(0).unwrap().id())?;
+    let acc2 = create_account(tx,
+                              &securities.get(1).unwrap().id(),
+                              &users.get(1).unwrap().id())?;
     Ok((users, securities, vec![acc1, acc2]))
 }

src/db/_users.rs

@@ -1,21 +1,28 @@
 use rusqlite::{Connection, params, Result, Transaction, Row};
 use serde::{Serialize};
+use crate::db::_external_id::{UserId, Id};
 
 
 #[derive(Debug, Serialize)]
 pub struct User {
-    pub id: i32,
+    id: u32,
     name: String,
     public_key: String,
 }
 
-pub fn create_user(tx: & Transaction, name: &String, public_key: &String) -> Result<User>{
+impl User {
+    pub fn id(&self) -> UserId {
+        UserId::from_id(self.id)
+    }
+}
+
+pub fn create_user(tx: &Transaction, name: &String, public_key: &String) -> Result<User> {
     tx.execute("INSERT INTO users (name, public_key) VALUES (?1, ?2)",
                (name, public_key))?;
     return get_user_by_id(tx, tx.last_insert_rowid() as i32);
 }
 
-fn _user_from_row(row: &Row) -> Result<User>{
+fn _user_from_row(row: &Row) -> Result<User> {
     Ok(User {
         id: row.get(0)?,
         name: row.get(1)?,
@@ -23,15 +30,14 @@ fn _user_from_row(row: &Row) -> Result<User>{
     })
 }
 
-fn get_user_by_id(tx: & Transaction, id: i32) -> Result<User>{
+fn get_user_by_id(tx: &Transaction, id: i32) -> Result<User> {
     let q = "SELECT id, name, public_key
                    FROM users
                    WHERE id = ?1";
     tx.query_row(q, params![id], _user_from_row)
 }
 
-pub fn list_users(conn: & Connection) -> Result<Vec<User>>{
+pub fn list_users(conn: &Connection) -> Result<Vec<User>> {
-
     let mut stmt = conn.prepare("SELECT id, name, public_key FROM users")?;
     let ret: Vec<User> = stmt.query_map([], _user_from_row)?
         .filter(Result::is_ok)

src/db/mod.rs

@@ -5,8 +5,12 @@ mod _cheques;
 mod _external_id;
 mod _test_utils;
 
+pub mod external_id {
+    pub use super::_external_id::*;
+}
+
 pub mod securities {
-    pub use super::_securities::{get_security_by_id, list_securities, Security};
+    pub use super::_securities::{get_security_by_id, list_securities, Security, is_owner};
 }
 
 pub mod users {

src/main.rs

@@ -13,6 +13,7 @@ use crate::db::users::{create_user, list_users};
 mod migration;
 mod db;
 mod services;
+mod util;
 
 #[derive(Debug, Serialize)]
 struct Output<T> {

src/services/_transactions.rs

@@ -1,37 +1,62 @@
-use rusqlite::{params, Result, Transaction};
+use rusqlite::{params, Params, Transaction};
 
-use crate::db::accounts::get_account_by_id;
+use crate::db::accounts::{Account, get_account_by_id};
 use crate::db::cheques::SecurityEmitterCheque;
+use crate::db::external_id::AccountId;
+use crate::db::securities;
 use crate::db::securities::get_security_by_id;
+use crate::util::*;
 
-fn _add_securities_to_account(tx: &Transaction,
+fn _add_securities_to_account(tx: &TransactionHelper,
-                              cheque: &SecurityEmitterCheque) -> Result<()> {
+                              cheque: &SecurityEmitterCheque,
+                              account_id: &AccountId) -> CustomResult<()> {
+    let q = "UPDATE accounts
+                  SET amount = amount + ?1
+                  WHERE id = ?2";
+    tx.execute(q, params![cheque.amount, account_id])?;
+    Ok(())
+}
+
+fn _add_cheque_to_cashed_cheques_log(tx: &TransactionHelper,
+                                     cheque: &SecurityEmitterCheque,
+                                     account_id: &AccountId) -> Result<(), Error> {
     let q = "
-    INSERT INTO accounts() VALUES()
+        INSERT INTO cashed_cheques(
+            drawer_user_id,
+            cheque_number,
+            amount,
+            underlying_security
+        )
+        VALUES(?1, ?2, ?3, ?4)
     ";
-    tx.execute(q, params![cheque.amount])?;
+    tx.execute(q, params![cheque.drawer_user_id,
+                                     cheque.cheque_number,
+                                     cheque.amount,
+                                     cheque.security_id])?;
     Ok(())
 }
 
 fn cash_cheque(tx: &Transaction,
-               cheque: &SecurityEmitterCheque) -> Result<()> {
+               cheque: &SecurityEmitterCheque,
-    cheque.assert_valid(tx)?;
+               account_id: &AccountId) -> CustomResult<()> {
     // move money to new account
-    _add_securities_to_account(tx, cheque)?;
+    if !securities::is_owner(tx, &cheque.security_id, &cheque.drawer_user_id).map_err(Error::SqlError)? {
-    // create transaction log
+        return Err(Error::InvalidDrawer(format!("The drawer is the security owner: {:?}", cheque)));
-    // create cheque log
+    }
-    Ok(())
-}
 
-fn update_account(tx: &Transaction, account_id: u32) -> Result<()> {
+
-    let account = get_account_by_id(tx, account_id)?;
+    let myx = TransactionHelper::new(tx);
-    return Ok(());
+    _add_securities_to_account(&myx, cheque, account_id)?;
+    _add_cheque_to_cashed_cheques_log(&myx, cheque, account_id)?;
+    // create transaction log
+    Ok(())
 }
 
 
 #[cfg(test)]
 mod test {
-    use rusqlite::{Connection, params, Result};
+    use rusqlite::{Connection, params};
+    use crate::db::accounts::create_account;
 
     use crate::db::test_utils;
     use crate::migration;
@@ -44,19 +69,36 @@ mod test {
         return conn;
     }
 
+
     #[test]
-    fn test_basic() -> Result<()> {
+    fn test_basic() -> Result<(), Error> {
         let mut conn = setup();
-        let tx = conn.transaction()?;
+        let tx = conn.transaction().unwrap();
-        let (users, securities, accounts) = test_utils::setup_basic_environment(&tx)?;
+        let (users, securities, accounts) = test_utils::setup_basic_environment(&tx).unwrap();
-        tx.commit()?;
+        let sec = securities.get(0).unwrap();
+        let drawer = users.get(0).unwrap();
+        let payee = users.get(1).unwrap();
+        let amount: u32 = 1000;
+        let payee_account = create_account(&tx, & sec.id(), & payee.id()).unwrap();
 
-        let tx = conn.transaction()?;
+        tx.commit().unwrap();
-        // let cheque = SecurityEmitterCheque{
+        let tx = conn.transaction().unwrap();
-        //     drawer_user_id: users.get_unchecked(0).id
-        // };
 
+
+        // let tx = conn.transaction()?;
+        // SecurityEmitterCheque::new(securities.get())
+        let cheque = SecurityEmitterCheque::new(
+            drawer.id(),
+            sec.id(),
+            payee.id(),
+            amount,
+            99,
+        );
+
+
+        cash_cheque(&tx, &cheque, &payee_account.id())?;
+
+        tx.commit().unwrap();
         Ok(())
     }
-
 }

src/util.rs

@@ -0,0 +1,23 @@
+use rusqlite::{Params, Transaction};
+
+#[derive(Debug)]
+pub enum Error {
+    SqlError(rusqlite::Error),
+    InvalidDrawer(String),
+}
+
+pub type CustomResult<T, E = Error> = Result<T, E>;
+
+pub struct TransactionHelper<'a> {
+    tx: &'a Transaction<'a>,
+}
+
+impl TransactionHelper<'_> {
+    pub fn new<'a>(tx: &'a Transaction) -> TransactionHelper<'a> {
+        TransactionHelper { tx }
+    }
+
+    pub fn execute<P: Params>(&self, sql: &str, params: P) -> CustomResult<usize> {
+        self.tx.execute(sql, params).map_err(Error::SqlError)
+    }
+}