From cda07b4d845c19b61444135d210091e6ed14adcc Mon Sep 17 00:00:00 2001
From: StNicolay <stnicolay2007@mail.ru>
Date: Thu, 1 Jun 2023 14:42:35 +0300
Subject: [PATCH] Sepparated the code out into 3 more library crates:
 cryptography, entity and pass_manager

---
 .vscode/settings.json                         |  5 ++
 Cargo.lock                                    | 32 +++++--
 Cargo.toml                                    | 10 +--
 cryptography/Cargo.toml                       | 18 ++++
 cryptography/src/account.rs                   | 88 +++++++++++++++++++
 cryptography/src/lib.rs                       | 17 ++++
 cryptography/src/master_pass.rs               | 45 ++++++++++
 .../src/password_generation.rs                | 26 +-----
 cryptography/src/prelude.rs                   |  2 +
 entity/Cargo.toml                             | 11 +++
 {src/entity => entity/src}/account.rs         | 82 ++---------------
 entity/src/lib.rs                             |  7 ++
 entity/src/master_pass.rs                     | 45 ++++++++++
 {src/entity => entity/src}/prelude.rs         |  2 +-
 .../callbacks/delete_message.rs               |  2 +-
 src/{handlers => }/callbacks/mod.rs           |  0
 src/{handlers => }/commands/add_account.rs    |  5 +-
 src/{handlers => }/commands/cancel.rs         |  2 +-
 src/{handlers => }/commands/delete.rs         | 10 +--
 src/{handlers => }/commands/delete_all.rs     | 11 +--
 src/{handlers => }/commands/export.rs         |  6 +-
 src/commands/gen_password.rs                  | 20 +++++
 src/{handlers => }/commands/get_account.rs    | 13 ++-
 src/{handlers => }/commands/get_accounts.rs   |  5 +-
 src/{handlers => }/commands/help.rs           |  2 +-
 src/{handlers => }/commands/import.rs         |  4 +-
 src/{handlers => }/commands/mod.rs            |  0
 .../commands/set_master_pass.rs               | 10 +--
 src/{handlers => }/commands/start.rs          |  0
 src/{handlers => }/default.rs                 |  2 +-
 src/entity/master_pass.rs                     | 77 ----------------
 src/entity/mod.rs                             |  5 --
 src/{handlers/mod.rs => lib.rs}               |  4 +
 src/main.rs                                   | 10 +--
 src/{handlers => }/markups.rs                 |  2 +-
 src/{handlers => }/master_password_check.rs   |  5 +-
 src/models.rs                                 |  4 +-
 src/{handlers => }/state/generic.rs           |  8 +-
 src/{handlers => }/state/get_account_name.rs  | 12 ++-
 src/{handlers => }/state/get_login.rs         |  2 +-
 src/{handlers => }/state/get_master_pass.rs   |  8 +-
 src/{handlers => }/state/get_password.rs      |  2 +-
 src/{handlers => }/state/get_user.rs          |  5 +-
 src/{handlers => }/state/handler.rs           |  2 +-
 src/{handlers => }/state/mod.rs               |  0
 src/{handlers => }/utils.rs                   |  0
 46 files changed, 360 insertions(+), 268 deletions(-)
 create mode 100644 .vscode/settings.json
 create mode 100644 cryptography/Cargo.toml
 create mode 100644 cryptography/src/account.rs
 create mode 100644 cryptography/src/lib.rs
 create mode 100644 cryptography/src/master_pass.rs
 rename src/handlers/commands/gen_password.rs => cryptography/src/password_generation.rs (61%)
 create mode 100644 cryptography/src/prelude.rs
 create mode 100644 entity/Cargo.toml
 rename {src/entity => entity/src}/account.rs (50%)
 create mode 100644 entity/src/lib.rs
 create mode 100644 entity/src/master_pass.rs
 rename {src/entity => entity/src}/prelude.rs (65%)
 rename src/{handlers => }/callbacks/delete_message.rs (94%)
 rename src/{handlers => }/callbacks/mod.rs (100%)
 rename src/{handlers => }/commands/add_account.rs (95%)
 rename src/{handlers => }/commands/cancel.rs (86%)
 rename src/{handlers => }/commands/delete.rs (92%)
 rename src/{handlers => }/commands/delete_all.rs (85%)
 rename src/{handlers => }/commands/export.rs (94%)
 create mode 100644 src/commands/gen_password.rs
 rename src/{handlers => }/commands/get_account.rs (92%)
 rename src/{handlers => }/commands/get_accounts.rs (90%)
 rename src/{handlers => }/commands/help.rs (86%)
 rename src/{handlers => }/commands/import.rs (96%)
 rename src/{handlers => }/commands/mod.rs (100%)
 rename src/{handlers => }/commands/set_master_pass.rs (89%)
 rename src/{handlers => }/commands/start.rs (100%)
 rename src/{handlers => }/default.rs (89%)
 delete mode 100644 src/entity/master_pass.rs
 delete mode 100644 src/entity/mod.rs
 rename src/{handlers/mod.rs => lib.rs} (96%)
 rename src/{handlers => }/markups.rs (96%)
 rename src/{handlers => }/master_password_check.rs (94%)
 rename src/{handlers => }/state/generic.rs (90%)
 rename src/{handlers => }/state/get_account_name.rs (93%)
 rename src/{handlers => }/state/get_login.rs (93%)
 rename src/{handlers => }/state/get_master_pass.rs (92%)
 rename src/{handlers => }/state/get_password.rs (93%)
 rename src/{handlers => }/state/get_user.rs (95%)
 rename src/{handlers => }/state/handler.rs (97%)
 rename src/{handlers => }/state/mod.rs (100%)
 rename src/{handlers => }/utils.rs (100%)

diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..352a626
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,5 @@
+{
+    "rust-analyzer.linkedProjects": [
+        "./Cargo.toml"
+    ]
+}
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
index 552b2c5..f0b8844 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -460,6 +460,22 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "cryptography"
+version = "0.1.0"
+dependencies = [
+ "arrayvec",
+ "bitflags 2.3.1",
+ "chacha20poly1305",
+ "entity",
+ "pbkdf2",
+ "rand",
+ "scrypt",
+ "sea-orm",
+ "sha2",
+ "thiserror",
+]
+
 [[package]]
 name = "darling"
 version = "0.13.4"
@@ -566,6 +582,14 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "entity"
+version = "0.1.0"
+dependencies = [
+ "futures",
+ "sea-orm",
+]
+
 [[package]]
 name = "env_logger"
 version = "0.10.0"
@@ -1314,21 +1338,17 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "arrayvec",
- "bitflags 2.3.1",
- "chacha20poly1305",
+ "cryptography",
  "dotenv",
+ "entity",
  "futures",
  "itertools 0.10.5",
  "log",
  "migration",
- "pbkdf2",
  "pretty_env_logger",
- "rand",
- "scrypt",
  "sea-orm",
  "serde",
  "serde_json",
- "sha2",
  "teloxide",
  "thiserror",
  "tokio",
diff --git a/Cargo.toml b/Cargo.toml
index a194dfd..3b806c2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,26 +9,22 @@ edition = "2021"
 strip = true
 
 [workspace]
-members = [".", "migration"]
+members = [".", "migration", "entity", "cryptography"]
 
 [dependencies]
 anyhow = "1.0.71"
 arrayvec = "0.7.2"
-bitflags = "2.3.1"
-chacha20poly1305 = { version = "0.10.1", features = ["std"] }
+cryptography = { version = "0.1.0", path = "cryptography" }
 dotenv = "0.15.0"
+entity = { version = "0.1.0", path = "entity" }
 futures = "0.3.28"
 itertools = "0.10.5"
 log = "0.4.17"
 migration = { version = "0.2.0", path = "migration" }
-pbkdf2 = "0.12.1"
 pretty_env_logger = "0.5.0"
-rand = { version = "0.8.5", default-features = false, features = ["std_rng"] }
-scrypt = { version = "0.11.0", default-features = false, features = ["std"] }
 sea-orm = { version = "0.11.3", features = ["sqlx-mysql", "runtime-tokio-rustls"] }
 serde = "1.0.163"
 serde_json = "1.0.96"
-sha2 = "0.10.6"
 teloxide = { version = "0.12.2", features = ["macros", "ctrlc_handler", "rustls", "throttle"], default-features = false }
 thiserror = "1.0.40"
 tokio = { version = "1.28.1", features = ["macros", "rt-multi-thread"] }
diff --git a/cryptography/Cargo.toml b/cryptography/Cargo.toml
new file mode 100644
index 0000000..a02ea15
--- /dev/null
+++ b/cryptography/Cargo.toml
@@ -0,0 +1,18 @@
+[package]
+name = "cryptography"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+sha2 = "0.10.6"
+scrypt = { version = "0.11.0", default-features = false, features = ["std"] }
+pbkdf2 = "0.12.1"
+thiserror = "1.0.40"
+entity = { version = "0.1.0", path = "../entity" }
+chacha20poly1305 = { version = "0.10.1", features = ["std"] }
+rand = { version = "0.8.5", default-features = false, features = ["std_rng"] }
+sea-orm = "0.11.3"
+bitflags = "2.3.1"
+arrayvec = "0.7.2"
diff --git a/cryptography/src/account.rs b/cryptography/src/account.rs
new file mode 100644
index 0000000..628a484
--- /dev/null
+++ b/cryptography/src/account.rs
@@ -0,0 +1,88 @@
+use chacha20poly1305::{aead::Aead, AeadCore, ChaCha20Poly1305, KeyInit};
+use entity::account;
+use pbkdf2::pbkdf2_hmac_array;
+use rand::{rngs::OsRng, RngCore};
+use sea_orm::ActiveValue::Set;
+use sha2::Sha256;
+
+struct Cipher {
+    chacha: ChaCha20Poly1305,
+}
+
+impl Cipher {
+    /// Creates a new cipher from a master password and the salt
+    #[inline]
+    fn new(password: &[u8], salt: &[u8]) -> Self {
+        let key = pbkdf2_hmac_array::<Sha256, 32>(password, salt, 480000);
+
+        Self {
+            chacha: ChaCha20Poly1305::new(&key.into()),
+        }
+    }
+
+    /// Encrypts the value with the current cipher. The 12 byte nonce is appended to the result
+    #[inline]
+    pub fn encrypt(&self, value: &[u8]) -> crate::Result<Vec<u8>> {
+        let nonce = ChaCha20Poly1305::generate_nonce(&mut OsRng);
+        let mut result = self.chacha.encrypt(&nonce, value)?;
+        result.extend(nonce);
+        Ok(result)
+    }
+
+    /// Decrypts the value with the current cipher. The 12 byte nonce is expected to be at the end of the value
+    #[inline]
+    fn decrypt(&self, value: &[u8]) -> crate::Result<Vec<u8>> {
+        let (data, nonce) = value.split_at(value.len() - 12);
+        self.chacha.decrypt(nonce.into(), data).map_err(Into::into)
+    }
+}
+
+pub trait AccountFromUnencryptedExt {
+    fn from_unencrypted(
+        user_id: u64,
+        name: String,
+        login: &str,
+        password: &str,
+        master_pass: &str,
+    ) -> crate::Result<account::ActiveModel>;
+}
+
+impl AccountFromUnencryptedExt for account::ActiveModel {
+    /// Encryptes the provided data by the master password and creates the ActiveModel with all fields set to Set variant
+    #[inline]
+    fn from_unencrypted(
+        user_id: u64,
+        name: String,
+        login: &str,
+        password: &str,
+        master_pass: &str,
+    ) -> crate::Result<Self> {
+        let mut salt = vec![0; 64];
+        OsRng.fill_bytes(&mut salt);
+        let cipher = Cipher::new(master_pass.as_bytes(), &salt);
+        let enc_login = Set(cipher.encrypt(login.as_bytes())?);
+        let enc_password = Set(cipher.encrypt(password.as_bytes())?);
+        Ok(Self {
+            name: Set(name),
+            user_id: Set(user_id),
+            salt: Set(salt),
+            enc_login,
+            enc_password,
+        })
+    }
+}
+
+pub trait DecryptAccountExt {
+    fn decrypt(&self, master_pass: &str) -> crate::Result<(String, String)>;
+}
+
+impl DecryptAccountExt for account::Model {
+    /// Returns the decrypted login and password of the account
+    #[inline]
+    fn decrypt(&self, master_pass: &str) -> crate::Result<(String, String)> {
+        let cipher = Cipher::new(master_pass.as_bytes(), &self.salt);
+        let login = String::from_utf8(cipher.decrypt(&self.enc_login)?)?;
+        let password = String::from_utf8(cipher.decrypt(&self.enc_password)?)?;
+        Ok((login, password))
+    }
+}
diff --git a/cryptography/src/lib.rs b/cryptography/src/lib.rs
new file mode 100644
index 0000000..db8f12f
--- /dev/null
+++ b/cryptography/src/lib.rs
@@ -0,0 +1,17 @@
+//! Functions to encrypt the database models
+
+pub mod account;
+pub mod master_pass;
+pub mod password_generation;
+pub mod prelude;
+
+#[derive(thiserror::Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    ChaChaError(#[from] chacha20poly1305::Error),
+
+    #[error(transparent)]
+    InvalidUTF8(#[from] std::string::FromUtf8Error),
+}
+
+type Result<T> = std::result::Result<T, Error>;
diff --git a/cryptography/src/master_pass.rs b/cryptography/src/master_pass.rs
new file mode 100644
index 0000000..6943b3c
--- /dev/null
+++ b/cryptography/src/master_pass.rs
@@ -0,0 +1,45 @@
+use entity::master_pass;
+use rand::{rngs::OsRng, RngCore};
+use scrypt::{scrypt, Params};
+use sea_orm::ActiveValue::Set;
+
+/// Hashes the password with Scrypt with the given salt
+#[inline]
+fn hash_password(password: &[u8], salt: &[u8]) -> [u8; 64] {
+    let params = Params::new(14, Params::RECOMMENDED_R, Params::RECOMMENDED_P, 64).unwrap();
+    let mut password_hash = [0; 64];
+    scrypt(password, salt, &params, &mut password_hash).unwrap();
+    password_hash
+}
+
+pub trait VerifyMasterPassExt {
+    fn verify(&self, password: &str) -> bool;
+}
+
+impl VerifyMasterPassExt for master_pass::Model {
+    /// Checks that the given password hash matches the one of the model
+    #[inline]
+    fn verify(&self, password: &str) -> bool {
+        let hashed = hash_password(password.as_bytes(), &self.salt);
+        hashed == self.password_hash.as_slice()
+    }
+}
+
+pub trait MasterPassFromUnencryptedExt {
+    fn from_unencrypted(user_id: u64, password: &str) -> master_pass::ActiveModel;
+}
+
+impl MasterPassFromUnencryptedExt for master_pass::ActiveModel {
+    /// Hashes the password and creates an ActiveModel with all fields set to Set variant
+    #[inline]
+    fn from_unencrypted(user_id: u64, password: &str) -> Self {
+        let mut salt = vec![0; 64];
+        OsRng.fill_bytes(&mut salt);
+        let password_hash = Set(hash_password(password.as_bytes(), &salt).to_vec());
+        Self {
+            user_id: Set(user_id),
+            salt: Set(salt),
+            password_hash,
+        }
+    }
+}
diff --git a/src/handlers/commands/gen_password.rs b/cryptography/src/password_generation.rs
similarity index 61%
rename from src/handlers/commands/gen_password.rs
rename to cryptography/src/password_generation.rs
index 8336be7..8c84f54 100644
--- a/src/handlers/commands/gen_password.rs
+++ b/cryptography/src/password_generation.rs
@@ -1,14 +1,10 @@
-use crate::handlers::markups::deletion_markup;
 use arrayvec::{ArrayString, ArrayVec};
 use rand::{rngs::OsRng, seq::SliceRandom};
-use std::{fmt::Write, str::from_utf8_unchecked};
-use teloxide::{adaptors::Throttle, prelude::*, types::ParseMode};
-use tokio::task::spawn_blocking;
+use std::str::from_utf8_unchecked;
 
 const CHARS: &[u8] = br##"!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_abcdefghijklmnopqrstuvwxyz{|}~"##;
 
 bitflags::bitflags! {
-    #[derive(PartialEq)]
     struct PasswordFlags: u8 {
         const LOWERCASE = 0b0001;
         const UPPERCASE = 0b0010;
@@ -18,7 +14,7 @@ bitflags::bitflags! {
 }
 
 /// Returns true if the generated master password is valid.
-/// It checks that it has at least one lowercase, one lowercase and one punctuation char
+/// It checks that it has at least one lowercase, one uppercase, one number and one punctuation char
 #[inline]
 fn check_generated_password(password: &[u8]) -> bool {
     let mut flags = PasswordFlags::empty();
@@ -32,7 +28,7 @@ fn check_generated_password(password: &[u8]) -> bool {
             }
             _ => (),
         }
-        if flags == PasswordFlags::all() {
+        if flags.is_all() {
             return true;
         }
     }
@@ -41,7 +37,7 @@ fn check_generated_password(password: &[u8]) -> bool {
 
 /// Continuously generates the password until it passes the checks
 #[inline]
-fn generate_passwords() -> [ArrayString<32>; 10] {
+pub fn generate_passwords() -> [ArrayString<32>; 10] {
     let mut passwords = ArrayVec::new_const();
     while !passwords.is_full() {
         let password: ArrayVec<u8, 32> = (0..32)
@@ -55,17 +51,3 @@ fn generate_passwords() -> [ArrayString<32>; 10] {
     }
     unsafe { passwords.into_inner_unchecked() }
 }
-
-/// Handles /gen_password command by generating 10 copyable passwords and sending them to the user
-pub async fn gen_password(bot: Throttle<Bot>, msg: Message) -> crate::Result<()> {
-    let mut message: ArrayString<{ 10 + 35 * 10 }> = "Passwords:".try_into().unwrap();
-    let passwords = spawn_blocking(generate_passwords).await?;
-    for password in passwords {
-        write!(message, "\n`{password}`").unwrap();
-    }
-    bot.send_message(msg.chat.id, message.as_str())
-        .parse_mode(ParseMode::MarkdownV2)
-        .reply_markup(deletion_markup())
-        .await?;
-    Ok(())
-}
diff --git a/cryptography/src/prelude.rs b/cryptography/src/prelude.rs
new file mode 100644
index 0000000..fe1020f
--- /dev/null
+++ b/cryptography/src/prelude.rs
@@ -0,0 +1,2 @@
+pub use super::account::*;
+pub use super::master_pass::*;
diff --git a/entity/Cargo.toml b/entity/Cargo.toml
new file mode 100644
index 0000000..5ea9eb2
--- /dev/null
+++ b/entity/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "entity"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+futures = "0.3.28"
+sea-orm = "0.11.3"
+
diff --git a/src/entity/account.rs b/entity/src/account.rs
similarity index 50%
rename from src/entity/account.rs
rename to entity/src/account.rs
index 7dc5505..eecfdc1 100644
--- a/src/entity/account.rs
+++ b/entity/src/account.rs
@@ -1,9 +1,7 @@
-use chacha20poly1305::{aead::Aead, AeadCore, ChaCha20Poly1305, KeyInit};
-use futures::{Stream, TryStreamExt};
-use pbkdf2::pbkdf2_hmac_array;
-use rand::{rngs::OsRng, RngCore};
-use sea_orm::{prelude::*, ActiveValue::Set, QueryOrder, QuerySelect};
-use sha2::Sha256;
+//! `SeaORM` Entity. Generated by sea-orm-codegen 0.11.3
+
+use futures::Stream;
+use sea_orm::{entity::prelude::*, QueryOrder, QuerySelect};
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq)]
 #[sea_orm(table_name = "account")]
@@ -25,74 +23,6 @@ pub enum Relation {}
 
 impl ActiveModelBehavior for ActiveModel {}
 
-struct Cipher {
-    chacha: ChaCha20Poly1305,
-}
-
-impl Cipher {
-    /// Creates a new cipher from a master password and the salt
-    #[inline]
-    fn new(password: &[u8], salt: &[u8]) -> Self {
-        let key = pbkdf2_hmac_array::<Sha256, 32>(password, salt, 480000);
-
-        Self {
-            chacha: ChaCha20Poly1305::new(&key.into()),
-        }
-    }
-
-    /// Encrypts the value with the current cipher. The 12 byte nonce is appended to the result
-    #[inline]
-    pub fn encrypt(&self, value: &[u8]) -> crate::Result<Vec<u8>> {
-        let nonce = ChaCha20Poly1305::generate_nonce(&mut OsRng);
-        let mut result = self.chacha.encrypt(&nonce, value)?;
-        result.extend(nonce);
-        Ok(result)
-    }
-
-    /// Decrypts the value with the current cipher. The 12 byte nonce is expected to be at the end of the value
-    #[inline]
-    fn decrypt(&self, value: &[u8]) -> crate::Result<Vec<u8>> {
-        let (data, nonce) = value.split_at(value.len() - 12);
-        self.chacha.decrypt(nonce.into(), data).map_err(Into::into)
-    }
-}
-
-impl ActiveModel {
-    /// Encryptes the provided data by the master password and creates the ActiveModel with all fields set to Set variant
-    #[inline]
-    pub fn from_unencrypted(
-        user_id: u64,
-        name: String,
-        login: &str,
-        password: &str,
-        master_pass: &str,
-    ) -> crate::Result<Self> {
-        let mut salt = vec![0; 64];
-        OsRng.fill_bytes(&mut salt);
-        let cipher = Cipher::new(master_pass.as_bytes(), &salt);
-        let enc_login = Set(cipher.encrypt(login.as_bytes())?);
-        let enc_password = Set(cipher.encrypt(password.as_bytes())?);
-        Ok(Self {
-            name: Set(name),
-            user_id: Set(user_id),
-            salt: Set(salt),
-            enc_login,
-            enc_password,
-        })
-    }
-}
-
-impl Model {
-    /// Returns the decrypted login and password of the account
-    #[inline]
-    pub fn decrypt(&self, master_pass: &str) -> crate::Result<(String, String)> {
-        let cipher = Cipher::new(master_pass.as_bytes(), &self.salt);
-        let login = String::from_utf8(cipher.decrypt(&self.enc_login)?)?;
-        let password = String::from_utf8(cipher.decrypt(&self.enc_password)?)?;
-        Ok((login, password))
-    }
-}
-
 impl Entity {
     /// Gets all user's account from DB
     #[inline]
@@ -104,7 +34,7 @@ impl Entity {
             .filter(Column::UserId.eq(user_id))
             .stream(db)
             .await?;
-        Ok(result.err_into())
+        Ok(result)
     }
 
     /// Gets a list of account names of a user
@@ -122,7 +52,7 @@ impl Entity {
             select = select.order_by_asc(Column::Name);
         }
         let result = select.into_tuple().stream(db).await?;
-        Ok(result.err_into())
+        Ok(result)
     }
 
     /// Checks if the account exists
diff --git a/entity/src/lib.rs b/entity/src/lib.rs
new file mode 100644
index 0000000..e40efc2
--- /dev/null
+++ b/entity/src/lib.rs
@@ -0,0 +1,7 @@
+pub mod account;
+pub mod master_pass;
+pub mod prelude;
+
+use sea_orm::DbErr;
+
+type Result<T> = std::result::Result<T, DbErr>;
diff --git a/entity/src/master_pass.rs b/entity/src/master_pass.rs
new file mode 100644
index 0000000..c853353
--- /dev/null
+++ b/entity/src/master_pass.rs
@@ -0,0 +1,45 @@
+//! `SeaORM` Entity. Generated by sea-orm-codegen 0.11.3
+
+use sea_orm::{entity::prelude::*, QuerySelect};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq)]
+#[sea_orm(table_name = "master_pass")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub user_id: u64,
+    #[sea_orm(column_type = "Binary(BlobSize::Blob(Some(64)))")]
+    pub salt: Vec<u8>,
+    #[sea_orm(column_type = "Binary(BlobSize::Blob(Some(64)))")]
+    pub password_hash: Vec<u8>,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {}
+
+impl ActiveModelBehavior for ActiveModel {}
+
+impl Entity {
+    /// Gets the master password from the database
+    #[inline]
+    pub async fn get(user_id: u64, db: &DatabaseConnection) -> crate::Result<Option<Model>> {
+        Self::find_by_id(user_id).one(db).await
+    }
+
+    /// Checks if the master password for the user exists
+    #[inline]
+    pub async fn exists(user_id: u64, db: &DatabaseConnection) -> Result<bool, DbErr> {
+        let id = Self::find_by_id(user_id)
+            .select_only()
+            .column(Column::UserId)
+            .into_tuple::<u64>()
+            .one(db)
+            .await?;
+        Ok(id.is_some())
+    }
+
+    /// Removes a master password of the user from the database
+    pub async fn remove(user_id: u64, db: &DatabaseConnection) -> Result<(), DbErr> {
+        Self::delete_by_id(user_id).exec(db).await?;
+        Ok(())
+    }
+}
diff --git a/src/entity/prelude.rs b/entity/src/prelude.rs
similarity index 65%
rename from src/entity/prelude.rs
rename to entity/src/prelude.rs
index d18dff6..ef066e2 100644
--- a/src/entity/prelude.rs
+++ b/entity/src/prelude.rs
@@ -1,4 +1,4 @@
-//! `SeaORM` Entity. Generated by sea-orm-codegen 0.11.2
+//! `SeaORM` Entity. Generated by sea-orm-codegen 0.11.3
 
 pub use super::account::{self, Entity as Account};
 pub use super::master_pass::{self, Entity as MasterPass};
diff --git a/src/handlers/callbacks/delete_message.rs b/src/callbacks/delete_message.rs
similarity index 94%
rename from src/handlers/callbacks/delete_message.rs
rename to src/callbacks/delete_message.rs
index 9f80183..fc01d4d 100644
--- a/src/handlers/callbacks/delete_message.rs
+++ b/src/callbacks/delete_message.rs
@@ -1,4 +1,4 @@
-use crate::handlers::markups::deletion_markup;
+use crate::markups::deletion_markup;
 use teloxide::{adaptors::Throttle, dispatching::DpHandlerDescription, prelude::*};
 
 /// Deletes the message from the callback
diff --git a/src/handlers/callbacks/mod.rs b/src/callbacks/mod.rs
similarity index 100%
rename from src/handlers/callbacks/mod.rs
rename to src/callbacks/mod.rs
diff --git a/src/handlers/commands/add_account.rs b/src/commands/add_account.rs
similarity index 95%
rename from src/handlers/commands/add_account.rs
rename to src/commands/add_account.rs
index e1d778c..20abc25 100644
--- a/src/handlers/commands/add_account.rs
+++ b/src/commands/add_account.rs
@@ -1,7 +1,6 @@
 use crate::{
-    errors::NoUserInfo,
-    handlers::{markups::deletion_markup, state::NameCheckKind, Handler, MainDialogue, State},
-    models::DecryptedAccount,
+    errors::NoUserInfo, markups::deletion_markup, models::DecryptedAccount, state::NameCheckKind,
+    Handler, MainDialogue, State,
 };
 use sea_orm::prelude::*;
 use teloxide::{adaptors::Throttle, prelude::*};
diff --git a/src/handlers/commands/cancel.rs b/src/commands/cancel.rs
similarity index 86%
rename from src/handlers/commands/cancel.rs
rename to src/commands/cancel.rs
index f73de99..8ed2a22 100644
--- a/src/handlers/commands/cancel.rs
+++ b/src/commands/cancel.rs
@@ -1,4 +1,4 @@
-use crate::handlers::markups::deletion_markup;
+use crate::markups::deletion_markup;
 use teloxide::{adaptors::Throttle, prelude::*};
 
 /// Handles /cancel command when there's no active state
diff --git a/src/handlers/commands/delete.rs b/src/commands/delete.rs
similarity index 92%
rename from src/handlers/commands/delete.rs
rename to src/commands/delete.rs
index e525461..8912158 100644
--- a/src/handlers/commands/delete.rs
+++ b/src/commands/delete.rs
@@ -1,12 +1,10 @@
 use crate::{
-    entity::prelude::Account,
     errors::NoUserInfo,
-    handlers::{
-        markups::{self, deletion_markup},
-        state::NameCheckKind,
-        Handler, MainDialogue, State,
-    },
+    markups::{self, deletion_markup},
+    state::NameCheckKind,
+    Handler, MainDialogue, State,
 };
+use entity::prelude::*;
 use sea_orm::prelude::*;
 use teloxide::{adaptors::Throttle, prelude::*};
 
diff --git a/src/handlers/commands/delete_all.rs b/src/commands/delete_all.rs
similarity index 85%
rename from src/handlers/commands/delete_all.rs
rename to src/commands/delete_all.rs
index 2cd3d5a..f3cf43a 100644
--- a/src/handlers/commands/delete_all.rs
+++ b/src/commands/delete_all.rs
@@ -1,9 +1,6 @@
-use crate::{
-    entity::prelude::*,
-    errors::NoUserInfo,
-    handlers::{markups::deletion_markup, Handler, MainDialogue, State},
-};
-use sea_orm::prelude::*;
+use crate::{errors::NoUserInfo, markups::deletion_markup, Handler, MainDialogue, State};
+use entity::prelude::*;
+use sea_orm::DatabaseConnection;
 use teloxide::{adaptors::Throttle, prelude::*};
 use tokio::join;
 
@@ -23,7 +20,7 @@ async fn get_master_pass(
         MasterPass::remove(user_id, &db),
     ) {
         (Ok(_), Ok(_)) => (),
-        (Err(err), _) | (Ok(_), Err(err)) => return Err(err),
+        (Err(err), _) | (Ok(_), Err(err)) => return Err(err.into()),
     };
     bot.send_message(msg.chat.id, "Everything was deleted")
         .reply_markup(deletion_markup())
diff --git a/src/handlers/commands/export.rs b/src/commands/export.rs
similarity index 94%
rename from src/handlers/commands/export.rs
rename to src/commands/export.rs
index a1422d9..24201a1 100644
--- a/src/handlers/commands/export.rs
+++ b/src/commands/export.rs
@@ -1,9 +1,10 @@
 use crate::{
-    entity::prelude::Account,
     errors::NoUserInfo,
-    handlers::{markups::deletion_markup, Handler, MainDialogue, State},
+    markups::deletion_markup,
     models::{DecryptedAccount, User},
+    Handler, MainDialogue, State,
 };
+use entity::prelude::*;
 use futures::TryStreamExt;
 use sea_orm::DatabaseConnection;
 use serde_json::to_vec_pretty;
@@ -26,6 +27,7 @@ async fn get_master_pass(
         let master_pass: Arc<str> = master_pass.into();
         Account::get_all(user_id, &db)
             .await?
+            .err_into::<crate::Error>()
             .try_for_each_concurrent(None, |account| {
                 let master_pass = Arc::clone(&master_pass);
                 async move {
diff --git a/src/commands/gen_password.rs b/src/commands/gen_password.rs
new file mode 100644
index 0000000..1fc320d
--- /dev/null
+++ b/src/commands/gen_password.rs
@@ -0,0 +1,20 @@
+use crate::markups::deletion_markup;
+use arrayvec::ArrayString;
+use cryptography::password_generation::generate_passwords;
+use std::fmt::Write;
+use teloxide::{adaptors::Throttle, prelude::*, types::ParseMode};
+use tokio::task::spawn_blocking;
+
+/// Handles /gen_password command by generating 10 copyable passwords and sending them to the user
+pub async fn gen_password(bot: Throttle<Bot>, msg: Message) -> crate::Result<()> {
+    let mut message: ArrayString<{ 10 + 35 * 10 }> = "Passwords:".try_into().unwrap();
+    let passwords = spawn_blocking(generate_passwords).await?;
+    for password in passwords {
+        write!(message, "\n`{password}`").unwrap();
+    }
+    bot.send_message(msg.chat.id, message.as_str())
+        .parse_mode(ParseMode::MarkdownV2)
+        .reply_markup(deletion_markup())
+        .await?;
+    Ok(())
+}
diff --git a/src/handlers/commands/get_account.rs b/src/commands/get_account.rs
similarity index 92%
rename from src/handlers/commands/get_account.rs
rename to src/commands/get_account.rs
index e6b4d36..2431cf4 100644
--- a/src/handlers/commands/get_account.rs
+++ b/src/commands/get_account.rs
@@ -1,13 +1,12 @@
 use crate::{
-    entity::prelude::Account,
     errors::NoUserInfo,
-    handlers::{
-        markups::{self, deletion_markup},
-        state::NameCheckKind,
-        Handler, MainDialogue, State,
-    },
+    markups::{self, deletion_markup},
+    state::NameCheckKind,
+    Handler, MainDialogue, State,
 };
-use sea_orm::prelude::*;
+use cryptography::prelude::*;
+use entity::prelude::*;
+use sea_orm::DatabaseConnection;
 use teloxide::{adaptors::Throttle, prelude::*, types::ParseMode};
 use tokio::task::spawn_blocking;
 
diff --git a/src/handlers/commands/get_accounts.rs b/src/commands/get_accounts.rs
similarity index 90%
rename from src/handlers/commands/get_accounts.rs
rename to src/commands/get_accounts.rs
index bb27924..11392cd 100644
--- a/src/handlers/commands/get_accounts.rs
+++ b/src/commands/get_accounts.rs
@@ -1,6 +1,7 @@
-use crate::{entity::prelude::Account, errors::NoUserInfo, handlers::markups::deletion_markup};
+use crate::{errors::NoUserInfo, markups::deletion_markup};
+use entity::prelude::*;
 use futures::TryStreamExt;
-use sea_orm::prelude::*;
+use sea_orm::DatabaseConnection;
 use std::fmt::Write;
 use teloxide::{adaptors::Throttle, prelude::*, types::ParseMode};
 
diff --git a/src/handlers/commands/help.rs b/src/commands/help.rs
similarity index 86%
rename from src/handlers/commands/help.rs
rename to src/commands/help.rs
index 90d3f46..8658cde 100644
--- a/src/handlers/commands/help.rs
+++ b/src/commands/help.rs
@@ -1,4 +1,4 @@
-use crate::handlers::{markups::deletion_markup, Command};
+use crate::{markups::deletion_markup, Command};
 use teloxide::{adaptors::Throttle, prelude::*, utils::command::BotCommands};
 
 /// Handles the help command by sending the passwords descryptions
diff --git a/src/handlers/commands/import.rs b/src/commands/import.rs
similarity index 96%
rename from src/handlers/commands/import.rs
rename to src/commands/import.rs
index a3e698e..b49600d 100644
--- a/src/handlers/commands/import.rs
+++ b/src/commands/import.rs
@@ -1,7 +1,5 @@
 use crate::{
-    errors::NoUserInfo,
-    handlers::{markups::deletion_markup, Handler, MainDialogue, State},
-    models::User,
+    errors::NoUserInfo, markups::deletion_markup, models::User, Handler, MainDialogue, State,
 };
 use futures::{future, stream::FuturesUnordered, StreamExt};
 use itertools::Itertools;
diff --git a/src/handlers/commands/mod.rs b/src/commands/mod.rs
similarity index 100%
rename from src/handlers/commands/mod.rs
rename to src/commands/mod.rs
diff --git a/src/handlers/commands/set_master_pass.rs b/src/commands/set_master_pass.rs
similarity index 89%
rename from src/handlers/commands/set_master_pass.rs
rename to src/commands/set_master_pass.rs
index 9d553d3..ad8ebba 100644
--- a/src/handlers/commands/set_master_pass.rs
+++ b/src/commands/set_master_pass.rs
@@ -1,8 +1,6 @@
-use crate::{
-    entity::prelude::*,
-    errors::NoUserInfo,
-    handlers::{markups::deletion_markup, Handler, MainDialogue, State},
-};
+use crate::{errors::NoUserInfo, markups::deletion_markup, Handler, MainDialogue, State};
+use cryptography::prelude::*;
+use entity::prelude::*;
 use sea_orm::prelude::*;
 use teloxide::{adaptors::Throttle, prelude::*};
 use tokio::task;
@@ -20,7 +18,7 @@ async fn get_master_pass(
     let model = task::spawn_blocking(move || {
         master_pass::ActiveModel::from_unencrypted(user_id, &master_password)
     })
-    .await??;
+    .await?;
     model.insert(&db).await?;
     bot.send_message(msg.chat.id, "Success")
         .reply_markup(deletion_markup())
diff --git a/src/handlers/commands/start.rs b/src/commands/start.rs
similarity index 100%
rename from src/handlers/commands/start.rs
rename to src/commands/start.rs
diff --git a/src/handlers/default.rs b/src/default.rs
similarity index 89%
rename from src/handlers/default.rs
rename to src/default.rs
index e6ab59d..4b836b3 100644
--- a/src/handlers/default.rs
+++ b/src/default.rs
@@ -1,4 +1,4 @@
-use crate::handlers::markups::deletion_markup;
+use crate::markups::deletion_markup;
 use teloxide::{adaptors::Throttle, prelude::*};
 
 /// Handles the messages which weren't matched by any commands or states
diff --git a/src/entity/master_pass.rs b/src/entity/master_pass.rs
deleted file mode 100644
index 7f9328c..0000000
--- a/src/entity/master_pass.rs
+++ /dev/null
@@ -1,77 +0,0 @@
-use rand::{rngs::OsRng, RngCore};
-use scrypt::{scrypt, Params};
-use sea_orm::{entity::prelude::*, ActiveValue::Set, QuerySelect};
-
-#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq)]
-#[sea_orm(table_name = "master_pass")]
-pub struct Model {
-    #[sea_orm(primary_key, auto_increment = false)]
-    pub user_id: u64,
-    #[sea_orm(column_type = "Binary(BlobSize::Blob(Some(64)))")]
-    pub salt: Vec<u8>,
-    #[sea_orm(column_type = "Binary(BlobSize::Blob(Some(64)))")]
-    pub password_hash: Vec<u8>,
-}
-
-#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
-pub enum Relation {}
-
-impl ActiveModelBehavior for ActiveModel {}
-
-/// Hashes the password with Scrypt with the given salt
-#[inline]
-fn hash_password(password: &[u8], salt: &[u8]) -> crate::Result<[u8; 64]> {
-    let params = Params::new(14, Params::RECOMMENDED_R, Params::RECOMMENDED_P, 64)?;
-    let mut password_hash = [0; 64];
-    scrypt(password, salt, &params, &mut password_hash)?;
-    Ok(password_hash)
-}
-
-impl Model {
-    /// Checks that the given password hash matches the one of the model
-    pub fn verify(&self, password: &str) -> crate::Result<bool> {
-        let hashed = hash_password(password.as_bytes(), &self.salt)?;
-        Ok(hashed == self.password_hash.as_slice())
-    }
-}
-
-impl ActiveModel {
-    /// Hashes the password and creates an ActiveModel with all fields set to Set variant
-    #[inline]
-    pub fn from_unencrypted(user_id: u64, password: &str) -> crate::Result<Self> {
-        let mut salt = vec![0; 64];
-        OsRng.fill_bytes(&mut salt);
-        let password_hash = Set(hash_password(password.as_bytes(), &salt)?.to_vec());
-        Ok(Self {
-            user_id: Set(user_id),
-            salt: Set(salt),
-            password_hash,
-        })
-    }
-}
-
-impl Entity {
-    /// Gets the master password from the database
-    #[inline]
-    pub async fn get(user_id: u64, db: &DatabaseConnection) -> crate::Result<Option<Model>> {
-        Self::find_by_id(user_id).one(db).await.map_err(Into::into)
-    }
-
-    /// Checks if the master password for the user exists
-    #[inline]
-    pub async fn exists(user_id: u64, db: &DatabaseConnection) -> crate::Result<bool> {
-        let id = Self::find_by_id(user_id)
-            .select_only()
-            .column(Column::UserId)
-            .into_tuple::<u64>()
-            .one(db)
-            .await?;
-        Ok(id.is_some())
-    }
-
-    /// Removes a master password of the user from the database
-    pub async fn remove(user_id: u64, db: &DatabaseConnection) -> crate::Result<()> {
-        Self::delete_by_id(user_id).exec(db).await?;
-        Ok(())
-    }
-}
diff --git a/src/entity/mod.rs b/src/entity/mod.rs
deleted file mode 100644
index 97ca813..0000000
--- a/src/entity/mod.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-//! Entities to work with the database
-
-pub mod account;
-pub mod master_pass;
-pub mod prelude;
diff --git a/src/handlers/mod.rs b/src/lib.rs
similarity index 96%
rename from src/handlers/mod.rs
rename to src/lib.rs
index 81e161d..70adbca 100644
--- a/src/handlers/mod.rs
+++ b/src/lib.rs
@@ -1,12 +1,16 @@
 mod callbacks;
 mod commands;
 mod default;
+mod errors;
 mod markups;
 mod master_password_check;
+mod models;
 mod state;
 mod utils;
 
+use anyhow::{Error, Result};
 use commands::Command;
+use futures::future::BoxFuture as PinnedFuture;
 use sea_orm::prelude::*;
 use state::{Handler, MainDialogue, State};
 use teloxide::{
diff --git a/src/main.rs b/src/main.rs
index dc36696..e25eb3b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,13 +1,7 @@
-mod entity;
-mod errors;
-mod handlers;
-mod models;
-
-use anyhow::{Error, Result};
+use anyhow::Result;
 use dotenv::dotenv;
-use futures::future::BoxFuture as PinnedFuture;
-use handlers::get_dispatcher;
 use migration::{Migrator, MigratorTrait};
+use pass_manager::get_dispatcher;
 use sea_orm::Database;
 use std::env;
 
diff --git a/src/handlers/markups.rs b/src/markups.rs
similarity index 96%
rename from src/handlers/markups.rs
rename to src/markups.rs
index fe42320..a77d571 100644
--- a/src/handlers/markups.rs
+++ b/src/markups.rs
@@ -1,4 +1,4 @@
-use crate::entity::prelude::Account;
+use entity::prelude::Account;
 use futures::TryStreamExt;
 use sea_orm::prelude::*;
 use teloxide::types::{InlineKeyboardButton, InlineKeyboardMarkup, KeyboardButton, KeyboardMarkup};
diff --git a/src/handlers/master_password_check.rs b/src/master_password_check.rs
similarity index 94%
rename from src/handlers/master_password_check.rs
rename to src/master_password_check.rs
index 252de57..267b65a 100644
--- a/src/handlers/master_password_check.rs
+++ b/src/master_password_check.rs
@@ -1,5 +1,6 @@
-use crate::{entity::prelude::MasterPass, errors::NoUserInfo};
-use sea_orm::prelude::*;
+use crate::errors::NoUserInfo;
+use entity::prelude::*;
+use sea_orm::DatabaseConnection;
 use teloxide::{adaptors::Throttle, dispatching::DpHandlerDescription, prelude::*};
 
 use super::markups::deletion_markup;
diff --git a/src/models.rs b/src/models.rs
index 9113418..0b53b98 100644
--- a/src/models.rs
+++ b/src/models.rs
@@ -1,6 +1,7 @@
 //! Models to export and import the accounts
 
-use crate::entity::prelude::*;
+use cryptography::prelude::*;
+use entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize)]
@@ -36,6 +37,7 @@ impl DecryptedAccount {
             &self.password,
             master_pass,
         )
+        .map_err(Into::into)
     }
 
     /// Returns true if the account's fields are valid
diff --git a/src/handlers/state/generic.rs b/src/state/generic.rs
similarity index 90%
rename from src/handlers/state/generic.rs
rename to src/state/generic.rs
index 8940809..ebd062c 100644
--- a/src/handlers/state/generic.rs
+++ b/src/state/generic.rs
@@ -1,8 +1,4 @@
-use crate::{
-    errors::HandlerUsed,
-    handlers::{markups::deletion_markup, utils::delete_optional},
-    PinnedFuture,
-};
+use crate::{errors::HandlerUsed, markups::deletion_markup, utils::delete_optional, PinnedFuture};
 use sea_orm::prelude::*;
 use teloxide::{adaptors::Throttle, prelude::*};
 
@@ -12,7 +8,7 @@ pub async fn generic<F>(
     bot: Throttle<Bot>,
     msg: Message,
     db: DatabaseConnection,
-    dialogue: crate::handlers::MainDialogue,
+    dialogue: crate::MainDialogue,
     check: F,
     no_text_message: impl Into<String>,
     next: super::PackagedHandler<String>,
diff --git a/src/handlers/state/get_account_name.rs b/src/state/get_account_name.rs
similarity index 93%
rename from src/handlers/state/get_account_name.rs
rename to src/state/get_account_name.rs
index 360fafb..23e7d1c 100644
--- a/src/handlers/state/get_account_name.rs
+++ b/src/state/get_account_name.rs
@@ -1,13 +1,11 @@
 use crate::{
-    entity::prelude::Account,
     errors::{HandlerUsed, NoUserInfo},
-    handlers::{
-        markups::{account_markup, deletion_markup},
-        utils::{delete_optional, validate_field},
-        MainDialogue,
-    },
+    markups::{account_markup, deletion_markup},
+    utils::{delete_optional, validate_field},
+    MainDialogue,
 };
-use sea_orm::prelude::*;
+use entity::prelude::*;
+use sea_orm::DatabaseConnection;
 use teloxide::{adaptors::Throttle, prelude::*};
 
 /// Specifies the kind of checks to be run during the account name validation
diff --git a/src/handlers/state/get_login.rs b/src/state/get_login.rs
similarity index 93%
rename from src/handlers/state/get_login.rs
rename to src/state/get_login.rs
index b5d8a85..b1dbfdb 100644
--- a/src/handlers/state/get_login.rs
+++ b/src/state/get_login.rs
@@ -1,4 +1,4 @@
-use crate::handlers::{utils::validate_field, MainDialogue};
+use crate::{utils::validate_field, MainDialogue};
 use sea_orm::prelude::*;
 use teloxide::{adaptors::Throttle, prelude::*};
 
diff --git a/src/handlers/state/get_master_pass.rs b/src/state/get_master_pass.rs
similarity index 92%
rename from src/handlers/state/get_master_pass.rs
rename to src/state/get_master_pass.rs
index dd620de..65a099f 100644
--- a/src/handlers/state/get_master_pass.rs
+++ b/src/state/get_master_pass.rs
@@ -1,6 +1,8 @@
-use crate::{entity::prelude::MasterPass, errors::NoUserInfo, handlers::MainDialogue};
+use crate::{errors::NoUserInfo, MainDialogue};
+use cryptography::prelude::*;
+use entity::prelude::*;
 use log::error;
-use sea_orm::prelude::*;
+use sea_orm::DatabaseConnection;
 use teloxide::{adaptors::Throttle, prelude::*};
 use tokio::task::spawn_blocking;
 
@@ -18,7 +20,7 @@ async fn check_master_pass(
     let is_valid = match model {
         Some(model) => {
             let master_pass = master_pass.to_owned();
-            spawn_blocking(move || model.verify(&master_pass)).await??
+            spawn_blocking(move || model.verify(&master_pass)).await?
         }
         None => {
             error!("User was put into the GetMasterPass state with no master password set");
diff --git a/src/handlers/state/get_password.rs b/src/state/get_password.rs
similarity index 93%
rename from src/handlers/state/get_password.rs
rename to src/state/get_password.rs
index 0affc1b..4ce8db7 100644
--- a/src/handlers/state/get_password.rs
+++ b/src/state/get_password.rs
@@ -1,7 +1,7 @@
 use sea_orm::prelude::*;
 use teloxide::{adaptors::Throttle, prelude::*};
 
-use crate::handlers::{utils::validate_field, MainDialogue};
+use crate::{utils::validate_field, MainDialogue};
 
 /// Function to handle GetPassword state
 pub async fn get_password(
diff --git a/src/handlers/state/get_user.rs b/src/state/get_user.rs
similarity index 95%
rename from src/handlers/state/get_user.rs
rename to src/state/get_user.rs
index bb80888..bec4b7d 100644
--- a/src/handlers/state/get_user.rs
+++ b/src/state/get_user.rs
@@ -1,7 +1,6 @@
 use crate::{
-    errors::HandlerUsed,
-    handlers::{markups::deletion_markup, utils::delete_optional, MainDialogue},
-    models::User,
+    errors::HandlerUsed, markups::deletion_markup, models::User, utils::delete_optional,
+    MainDialogue,
 };
 use futures::TryStreamExt;
 use sea_orm::prelude::*;
diff --git a/src/handlers/state/handler.rs b/src/state/handler.rs
similarity index 97%
rename from src/handlers/state/handler.rs
rename to src/state/handler.rs
index e3c5c5b..569174c 100644
--- a/src/handlers/state/handler.rs
+++ b/src/state/handler.rs
@@ -1,4 +1,4 @@
-use crate::handlers::MainDialogue;
+use crate::MainDialogue;
 use sea_orm::prelude::*;
 use std::{future::Future, sync::Arc};
 use teloxide::{adaptors::Throttle, prelude::*};
diff --git a/src/handlers/state/mod.rs b/src/state/mod.rs
similarity index 100%
rename from src/handlers/state/mod.rs
rename to src/state/mod.rs
diff --git a/src/handlers/utils.rs b/src/utils.rs
similarity index 100%
rename from src/handlers/utils.rs
rename to src/utils.rs