Получение текущего пользователя

GET /api/v1/user/ → {status: 200, body: {email: developer@mail.ru}}
GET /api/v1/user/ → {status: 401, body: {error: 'CONDITION/UNAUTHORISED'}}
GET /api/v1/user/ → {status: 500, body: {error: 'Internal Server Error'}}

Регистрация нового пользователя

POST /api/v1/user/signup/ {email: developer@mail.ru, password: qwerty} → {status: 200, body: {email: developer@mail.ru}}
POST /api/v1/user/signup/ {email: developer@mail.ru, password: qwerty} → {status: 409, body: {error: 'CONDITION/EXISTS'}}
POST /api/v1/user/signup/ {email: developermail.ru, password: qwerty} → {status: 400, body: {error: 'ARGUMENTS/INVALID', field: 'email'}}
POST /api/v1/user/signup/ {email: developer@mail.ru, password: ''} → {status: 400, body: {error: 'ARGUMENTS/REQUIRED', field: 'password'}}
POST /api/v1/user/signup/ {email: developer@mail.ru, password: qwerty} → {status: 500, body: {error: 'Internal Server Error'}}

Авторизация существующим пользователем

POST /api/v1/user/signin/ {email: developer@mail.ru, password: qwerty} → {status: 200, body: {email: developer@mail.ru}}
POST /api/v1/user/signin/ {email: developer@mail.ru, password: qwerty} → {status: 401, body: {error: 'CONDITION/UNAUTHORIZED'}}
POST /api/v1/user/signin/ {email: developer@mail.ru, password: qwerty} → {status: 404, body: {error: 'CONDITION/NOT_FOUND'}}
POST /api/v1/user/signin/ {email: developermail.ru, password: qwerty} → {status: 400, body: {error: 'ARGUMENTS/INVALID', field: 'email'}}
POST /api/v1/user/signin/ {email: developer@mail.ru, password: ''} → {status: 400, body: {error: 'ARGUMENTS/REQUIRED', field: 'password'}}
POST /api/v1/user/signin/ {email: developer@mail.ru, password: qwerty} → {status: 500, body: {error: 'Internal Server Error'}}