Merge branch 'develop'

.gitignore

@@ -0,0 +1,164 @@
+
+# Created by https://www.toptal.com/developers/gitignore/api/Python,Pycharm
+# Edit at https://www.toptal.com/developers/gitignore?templates=Python,Pycharm
+
+### PyCharm ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea
+
+# CMake
+cmake-build-*/
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+### Python ###
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
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+downloads/
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+parts/
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+var/
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+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
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+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
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+
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+*.sage.py
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+# End of https://www.toptal.com/developers/gitignore/api/Python,Pycharm

Makefile

@@ -0,0 +1,5 @@
+init:
+	pip install -r requirements.txt
+
+test:
+	nosetests tests

README.md

@@ -1,2 +1,2 @@
 # hr-resources
-Esempio in Python di un gestore delle risorse umane
+Esempio in Python di una REST API per la gestione delle risorse umane

app.py

@@ -0,0 +1,81 @@
+import itertools
+from datetime import date
+from typing import List, Dict
+
+from dateutil import relativedelta as period
+from flask import Flask
+from flask_json import FlaskJSON
+
+from db.access import fetch_european_departments, \
+    fetch_department_employees, \
+    fetch_american_departments, \
+    fetch_employees, \
+    fetch_departments, \
+    fetch_canadian_departments
+from models.department import Department
+
+app = Flask(__name__)
+FlaskJSON(app)
+
+app.config['JSON_DATE_FORMAT'] = '%d/%m/%Y'
+app.config['JSON_USE_ENCODE_METHODS'] = True
+
+
+@app.get("/")
+def index():
+    return "<h1>Homepage HR Resources</h1>"
+
+
+@app.errorhandler(404)
+@app.errorhandler(500)
+def handle_error(error):
+    return {
+        "status": error.code,
+        "description": error.description,
+        "name": error.name
+    }
+
+
+@app.get("/employee")
+def all_employees():
+    return {"employees": [e for e in fetch_employees()]}
+
+
+def __employees_group_by_seniority(departments: List[Department]) -> Dict[str, dict]:
+    result = {}
+    for department in departments:
+        # Per ogni dipartimento ricerco i suoi impiegati
+        department_employees = fetch_department_employees(department.department_id)
+
+        # Raggruppo gli impiegati per anni di anzianità
+        employee_group_by_years = itertools.groupby(department_employees,
+                                                    lambda e: period.relativedelta(date.today(), e.hire_date).years)
+
+        result[department.name] = {year: [e for e in employees]
+                                   for (year, employees) in employee_group_by_years}
+
+    return result
+
+
+@app.get("/employee/all-by-seniority")
+def employees_by_seniority():
+    departments = fetch_departments()
+    return __employees_group_by_seniority(departments)
+
+
+@app.get("/employee/american-by-seniority")
+def american_employees_by_seniority():
+    american_departments = fetch_american_departments()
+    return __employees_group_by_seniority(american_departments)
+
+
+@app.get("/employee/canadian-by-seniority")
+def canadian_employees_by_seniority():
+    canadian_departments = fetch_canadian_departments()
+    return __employees_group_by_seniority(canadian_departments)
+
+
+@app.get("/employee/european-by-seniority")
+def european_employees_by_seniority():
+    european_departments = fetch_european_departments()
+    return __employees_group_by_seniority(european_departments)

db/access.py

@@ -0,0 +1,265 @@
+from typing import List
+
+from psycopg2 import connect, extras as dbopts
+
+from models.department import Department
+from models.employee import Employee
+from models.location import Location
+
+db_url: str = 'postgresql://postgres:@localhost:5432/postgres'
+
+
+def __create_department(row):
+    return Department(
+        department_id=row["department_id"],
+        name=row["department_name"],
+        location=Location(
+            location_id=row["location_id"],
+            postal_code=row["postal_code"],
+            street_address=row["street_address"],
+            state_province=row["state_province"],
+            country_id=row["country_id"],
+            city=row["city"]
+        ))
+
+
+def fetch_departments() -> List[Department]:
+    """
+    Ricerca tutti i dipartimenti attivi
+    :return: elenco dei dipartimenti
+    """
+    with connect(db_url) as connection:
+        with connection.cursor(cursor_factory=dbopts.DictCursor) as cursor:
+            cursor.execute(
+                """
+                select
+                    d.department_id,
+                    d.department_name,
+                    d.location_id,
+                    l.postal_code,
+                    l.street_address,
+                    l.city,
+                    l.state_province,
+                    l.country_id 
+                from
+                    hr.departments d
+                left join hr.locations l on
+                    d.location_id = l.location_id
+                """
+            )
+
+            departments = [__create_department(row) for row in cursor.fetchall()]
+
+    return departments
+
+
+def fetch_american_departments() -> List[Department]:
+    """
+    Ricerca tutti i dipartimenti presenti negli USA.
+    :return: elenco dei dipartimenti USA
+    """
+    with connect(db_url) as connection:
+        with connection.cursor(cursor_factory=dbopts.DictCursor) as cursor:
+            cursor.execute(
+                """
+                select
+                    d.department_id,
+                    d.department_name,
+                    d.location_id,
+                    l.postal_code,
+                    l.street_address,
+                    l.city,
+                    l.state_province,
+                    l.country_id 
+                from
+                    hr.departments d
+                left join hr.locations l on
+                    d.location_id = l.location_id
+                where
+                    l.country_id = 'US'
+                """
+            )
+
+            departments = [__create_department(row) for row in cursor.fetchall()]
+
+    return departments
+
+
+def fetch_canadian_departments() -> List[Department]:
+    """
+    Ricerca tutti i dipartimenti presenti in Canada.
+    :return: elenco dei dipartimenti canadesi
+    """
+    with connect(db_url) as connection:
+        with connection.cursor(cursor_factory=dbopts.DictCursor) as cursor:
+            cursor.execute(
+                """
+                select
+                    d.department_id,
+                    d.department_name,
+                    d.location_id,
+                    l.postal_code,
+                    l.street_address,
+                    l.city,
+                    l.state_province,
+                    l.country_id 
+                from
+                    hr.departments d
+                left join hr.locations l on
+                    d.location_id = l.location_id
+                where
+                    l.country_id = 'CA'
+                """
+            )
+
+            departments = [__create_department(row) for row in cursor.fetchall()]
+
+    return departments
+
+
+def fetch_european_departments() -> List[Department]:
+    """
+    Ricerca tutti i dipartimenti dei paesi europei dove sono presenti
+    dei dipartimenti.
+    :return: elenco dei dipartimenti europei
+    """
+    with connect(db_url) as connection:
+        with connection.cursor(cursor_factory=dbopts.DictCursor) as cursor:
+            cursor.execute(
+                """
+                select
+                    d.department_id,
+                    d.department_name,
+                    d.location_id,
+                    l.postal_code,
+                    l.street_address,
+                    l.city,
+                    l.state_province,
+                    l.country_id 
+                from
+                    hr.departments d
+                left join hr.locations l on
+                    d.location_id = l.location_id
+                where
+                    l.country_id in ('UK', 'DE')
+                """
+            )
+
+            # Prendo dal DB tutti i dipartimenti presenti nel Regno Unito e Germania
+            departments = [__create_department(row) for row in cursor.fetchall()]
+
+    return departments
+
+
+def fetch_department_employees(department_id: int) -> List[Employee]:
+    """
+    Ricerca tutti i dipendenti di un dipartimento
+    :param department_id: dipartimento da ricercare
+    :return: elenco dei dipendenti
+    """
+    employees = []
+    with connect(db_url) as connection:
+        with connection.cursor(cursor_factory=dbopts.DictCursor) as cursor:
+            cursor.execute(
+                f"""
+                select
+                    e.employee_id,
+                    e.first_name,
+                    e.last_name,
+                    e.email,
+                    e.phone_number,
+                    e.hire_date,
+                    e.job_id,
+                    e.salary,
+                    e.manager_id,
+                    e.department_id,
+                    d.department_name,
+                    l.location_id,
+                    l.city,
+                    l.postal_code,
+                    l.state_province,
+                    l.street_address,
+                    l.country_id
+                from
+                    hr.employees e
+                left join hr.departments d on
+                    e.department_id = d.department_id
+                left join hr.locations l on
+                    d.location_id = l.location_id
+                where
+                    e.department_id = %s
+                """,
+                (department_id,)
+            )
+
+            # Prendo dal DB tutti i dipendenti di un dipartimento
+            for row in cursor.fetchall():
+                employees.append(Employee(
+                    employee_id=row["employee_id"],
+                    first_name=row["first_name"],
+                    last_name=row["last_name"],
+                    email=row["email"],
+                    phone_number=row["phone_number"],
+                    hire_date=row["hire_date"],
+                    job_id=row["job_id"],
+                    salary=row["salary"],
+                    manager_id=row["manager_id"],
+                    department=__create_department(row)
+                ))
+
+    return employees
+
+
+def fetch_employees() -> List[Employee]:
+    """
+    Ricerca tutti i dipendenti dell'azienda
+    :return: elenco dei dipendenti
+    """
+    employees = []
+    with connect(db_url) as connection:
+        with connection.cursor(cursor_factory=dbopts.DictCursor) as cursor:
+            cursor.execute(
+                f"""
+                select
+                    e.employee_id,
+                    e.first_name,
+                    e.last_name,
+                    e.email,
+                    e.phone_number,
+                    e.hire_date,
+                    e.job_id,
+                    e.salary,
+                    e.manager_id,
+                    e.department_id,
+                    d.department_name,
+                    l.location_id,
+                    l.city,
+                    l.postal_code,
+                    l.state_province,
+                    l.street_address,
+                    l.country_id
+                from
+                    hr.employees e
+                left join hr.departments d on
+                    e.department_id = d.department_id
+                left join hr.locations l on
+                    d.location_id = l.location_id
+                """
+            )
+
+            # Prendo dal DB tutti i dipendenti di un dipartimento
+            for row in cursor.fetchall():
+                employees.append(Employee(
+                    employee_id=row["employee_id"],
+                    first_name=row["first_name"],
+                    last_name=row["last_name"],
+                    email=row["email"],
+                    phone_number=row["phone_number"],
+                    hire_date=row["hire_date"],
+                    job_id=row["job_id"],
+                    salary=row["salary"],
+                    manager_id=row["manager_id"],
+                    department=__create_department(row)
+                ))
+
+    return employees

models/department.py

@@ -0,0 +1,30 @@
+from models.location import Location
+
+
+class Department:
+    def __init__(self, department_id: int, name: str, location: Location):
+        self.__department_id = department_id
+        self.__name = name
+        self.__location = location
+
+    @property
+    def department_id(self) -> int:
+        return self.__department_id
+
+    @property
+    def name(self) -> str:
+        return self.__name
+
+    @property
+    def location_id(self) -> Location:
+        return self.__location
+
+    def __json__(self):
+        return {
+            'department_id': self.__department_id,
+            'name': self.__name,
+            'location': self.__location if self.__location is not None else None
+        }
+
+    def __str__(self):
+        return f"Department({self.__department_id}, {self.__name}, {self.__location})"

models/employee.py

@@ -0,0 +1,80 @@
+from datetime import date
+
+from models.department import Department
+
+
+class Person:
+    def __init__(self, first_name, last_name):
+        self.__first_name = first_name
+        self.__last_name = last_name
+
+    @property
+    def first_name(self) -> str:
+        return self.__first_name
+
+    @property
+    def last_name(self) -> str:
+        return self.__last_name
+
+
+class Employee(Person):
+    def __init__(self, employee_id: int, first_name: str, last_name: str, email: str, phone_number: str,
+                 hire_date: date, department: Department, job_id: int = 0, salary: float = 0, manager_id: int = 0):
+        super().__init__(first_name, last_name)
+        self.__employee_id = employee_id
+        self.__email = email
+        self.__phone_number = phone_number
+        self.__hire_date = hire_date
+        self.__department = department
+        self.__job_id = job_id
+        self.__salary = salary
+        self.__manager_id = manager_id
+
+    @property
+    def employee_id(self) -> int:
+        return self.__employee_id
+
+    @property
+    def email(self) -> str:
+        return self.__email
+
+    @property
+    def phone_number(self) -> str:
+        return self.__phone_number
+
+    @property
+    def hire_date(self) -> date:
+        return self.__hire_date
+
+    @property
+    def department(self) -> Department:
+        return self.__department
+
+    @property
+    def job_id(self) -> int:
+        return self.__job_id
+
+    @property
+    def salary(self) -> float:
+        return self.__salary
+
+    @property
+    def manager_id(self) -> int:
+        return self.__manager_id
+
+    def __json__(self):
+        return {
+            'employee_id': self.__employee_id,
+            'first_name': self.first_name,
+            'last_name': self.last_name,
+            'email': self.__email,
+            'hire_date': self.__hire_date,
+            'department': self.__department if self.__department is not None else None,
+            'job_id': self.__job_id,
+            'salary': f"{self.__salary:,.2f}",
+            'manager_id': self.__manager_id
+        }
+
+    def __str__(self):
+        return f"Employee({self.__employee_id}, {self.first_name}, {self.last_name}, " \
+               f"{self.__email}, {self.__phone_number}, {self.__hire_date})"

models/location.py

@@ -0,0 +1,47 @@
+class Location:
+    def __init__(self, location_id: int, street_address: str, postal_code: str,
+                 city: str, state_province: str, country_id: int):
+        self.__location_id = location_id
+        self.__street_address = street_address
+        self.__postal_code = postal_code
+        self.__city = city
+        self.__state_province = state_province
+        self.__country_id = country_id
+
+    @property
+    def location_id(self) -> int:
+        return self.__location_id
+
+    @property
+    def street_address(self) -> str:
+        return self.__street_address
+
+    @property
+    def postal_code(self) -> str:
+        return self.__postal_code
+
+    @property
+    def city(self) -> str:
+        return self.__city
+
+    @property
+    def state_province(self) -> str:
+        return self.__state_province
+
+    @property
+    def country_id(self) -> int:
+        return self.__country_id
+
+    def __json__(self):
+        return {
+            'location_id': self.__location_id,
+            'street_address': self.__street_address,
+            'postal_code': self.__postal_code,
+            'city': self.__city,
+            'state_province': self.__state_province,
+            'country_id': self.__country_id
+        }
+
+    def __str__(self):
+        return f"Location({self.__location_id}, {self.__postal_code}, " \
+               f"{self.__street_address}, {self.__city}, {self.__state_province}) "

requirements.txt

@@ -0,0 +1,6 @@
+records~=0.5.3
+psycopg2-binary~=2.9.1
+setuptools~=57.0.0
+python-dateutil~=2.8.1
+Flask~=2.0.1
+Flask-JSON~=0.3.4

setup.py

@@ -0,0 +1,12 @@
+from setuptools import setup
+
+setup(
+    name='hr-resources',
+    version='0.1.0',
+    packages=[''],
+    url='',
+    license='',
+    author='Fabio Scotto di Santolo',
+    author_email='fabio.scottodisantolo@gmail.com',
+    description='Servizio per la visualizzazione delle risorse umane'
+)