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app.py
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app.py
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import os
from flask import Flask, jsonify, request
import pymysql
import pymysql.cursors
from dotenv import load_dotenv
from main import MainApplication
# Load environment variables from .env file
load_dotenv()
app = Flask(__name__)
# Establish connection with the MySQL database
def get_connection():
connection = pymysql.connect(
host=os.environ['MYSQL_HOST'],
user=os.environ['MYSQL_USER'],
password=os.environ['MYSQL_PASSWORD'],
database= os.environ['MYSQL_DATABASE'],
charset='utf8mb4',
cursorclass=pymysql.cursors.DictCursor,
server_public_key=True,
autocommit=True,
connect_timeout=5
)
return connection
# Fetch product information from the database
@app.route('/api/products', methods=['GET'])
def get_products():
query = request.args.get('query', '')
connection = get_connection()
try:
with connection.cursor() as cursor:
query_sql = '''
SELECT p.id, p.model_product, pt.type_name as product_type, s.size_name as size, gp.gender,
b.brand_name as brand, p.buying_price, p.selling_price, p.quantity
FROM product p
JOIN product_types pt ON p.product_type = pt.id
JOIN sizes s ON p.size = s.id
JOIN gender_products gp ON p.gender_product = gp.id
JOIN brands b ON p.brand = b.id
'''
if query:
query_sql += "WHERE p.model_product LIKE %s"
search_query = (query + '%',)
cursor.execute(query_sql, search_query)
else:
cursor.execute(query_sql)
products = cursor.fetchall()
except pymysql.MySQLError as e:
print(f"An error occurred: {e}")
return jsonify({"error": "An error occurred while fetching products"}), 500
finally:
connection.close()
return jsonify(products)
# Insert a new product into the database
@app.route('/api/add_product', methods=['POST'])
def add_product():
connection = get_connection()
try:
new_product = request.json
with connection.cursor() as cursor:
sql = '''
INSERT INTO product (model_product, product_type, size, gender_product, brand, buying_price, selling_price, quantity)
VALUES (%(model_product)s, %(product_type)s, %(size)s, %(gender_product)s, %(brand)s, %(buying_price)s, %(selling_price)s, %(quantity)s)
'''
cursor.execute(sql, new_product)
connection.commit()
return jsonify(message='Product registered successfully', item=new_product), 201
except pymysql.MySQLError as error:
return jsonify(error=str(error)), 500
finally:
connection.close()
# Update existing product information in the database
@app.route('/api/update_product/<int:product_id>', methods=['PUT'])
def update_product(product_id):
connection = get_connection()
try:
updated_product = request.json
print(f'received data: {updated_product}')
with connection.cursor() as cursor:
sql = '''
UPDATE product SET model_product = %s, product_type = %s, size = %s, gender_product = %s, brand = %s, buying_price = %s, selling_price = %s, quantity = %s
WHERE id = %s
'''
cursor.execute(sql, (
updated_product['model_product'],
updated_product['product_type'],
updated_product['size'],
updated_product['gender_product'],
updated_product['brand'],
updated_product['buying_price'],
updated_product['selling_price'],
updated_product['quantity'],
product_id
))
connection.commit()
return jsonify(message='Product updated successfully', item=updated_product), 200
except pymysql.MySQLError as error:
return jsonify(error=str(error)), 500
finally:
connection.close()
# Fetch product types for use in the UI's option menu
@app.route('/api/types', methods=['GET'])
def get_product_types():
connection = get_connection()
try:
with connection.cursor() as cursor:
cursor.execute('SELECT id, type_name FROM product_types')
types = cursor.fetchall()
return jsonify(types)
except pymysql.MySQLError as e:
print(f'Error: {e}')
return jsonify({'error': 'An error occurred while fetching product types'}), 500
finally:
connection.close()
# Fetch sizes for use in the UI's option menu
@app.route('/api/sizes', methods=['GET'])
def get_sizes():
connection = get_connection()
try:
with connection.cursor() as cursor:
cursor.execute('SELECT id, size_name FROM sizes')
sizes = cursor.fetchall()
return jsonify(sizes)
except pymysql.MySQLError as e:
print(f'Error: {e}')
return jsonify({'error': 'An error occurred while fetching sizes'}), 500
finally:
connection.close()
# Fetch gender options for use in the UI's option menu
@app.route('/api/genders', methods=['GET'])
def get_genders():
connection = get_connection()
try:
with connection.cursor() as cursor:
cursor.execute('SELECT id, gender FROM gender_products')
genders = cursor.fetchall()
return jsonify(genders)
except pymysql.MySQLError as e:
print(f'Error: {e}')
return jsonify({'error': 'An error occurred while fetching genders'}), 500
finally:
connection.close()
# Fetch brand options for use in the UI's option menu
@app.route('/api/brands', methods=['GET'])
def get_brands():
connection = get_connection()
try:
with connection.cursor() as cursor:
cursor.execute('SELECT id, brand_name FROM brands')
brands = cursor.fetchall()
return jsonify(brands)
except pymysql.MySQLError as e:
print(f'Error: {e}')
return jsonify({'error': 'An error occurred while fetching brands'}), 500
finally:
connection.close()
# Delete a product from the database using its ID
@app.route('/api/delete_product/<int:product_id>', methods=['DELETE'])
def delete_product(product_id):
connection = get_connection()
try:
with connection.cursor() as cursor:
sql = 'DELETE FROM product WHERE id = %s'
cursor.execute(sql, (product_id,))
connection.commit()
return jsonify(message=f'Product with id {product_id} deleted successfully'), 200
except pymysql.MySQLError as error:
return jsonify(error=str(error)), 500
finally:
connection.close()
# Entry point for running the Flask app (for testing purposes)
if __name__ == '__main__':
app.run()