my commit

src/Backend/ISwork.py

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+from minio import Minio
+from random import randint
+import dbwork
+
+def _setClient():
+    minio_client = Minio(
+        "localhost:9000",
+        access_key="minioadmin",
+        secret_key="minioadmin",
+        secure=False
+    )
+    return minio_client
+
+def getImageName(currentDay):
+    maxFiles = 2
+    fileNumber = randint(1, maxFiles)
+    desiredFile = currentDay + '/' + str(fileNumber) + '.jpeg'
+    return desiredFile
+
+def downloadImage(currentDay, username):
+    bucket_name = "cat-images"
+    client = _setClient()
+    client.fget_object(bucket_name, getImageName(currentDay), username + '.jpeg')
+
+def downloadForAll(currentDay):
+    counter = 1
+    user = dbwork.get_user(counter)
+    while(user != 'Error'):
+        downloadImage(currentDay, user)
+        counter += 1
+        user = dbwork.get_user(counter)
+
+Day = 'Tuesday'
+downloadForAll(Day)

src/Backend/dbwork.py

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+import psycopg2
+
+def _get_last_id(cursor):
+    cursor.execute("SELECT MAX(id) FROM usernames")
+    id = cursor.fetchall()[0][0]
+    return id
+
+def add_user(username):
+    connection = psycopg2.connect(
+    dbname="postgres_db",
+    user="postgres_user",
+    password="postgres_password",
+    host="localhost",
+    port="5430"
+    )
+    cursor = connection.cursor()
+    cursor.execute("INSERT INTO usernames VALUES (%s, %s);", (_get_last_id(cursor) + 1, username))
+    connection.commit()
+    cursor.close()
+    connection.close()
+    
+def delete_user(username):
+    connection = psycopg2.connect(
+    dbname="postgres_db",
+    user="postgres_user",
+    password="postgres_password",
+    host="localhost",
+    port="5430"
+    )
+    cursor = connection.cursor()
+    cursor.execute("DELETE FROM usernames WHERE username = %s;", (username,))
+    connection.commit()
+    cursor.close()
+    connection.close()
+
+def change_name(old_username, new_username):
+    connection = psycopg2.connect(
+    dbname="postgres_db",
+    user="postgres_user",
+    password="postgres_password",
+    host="localhost",
+    port="5430"
+    )
+    cursor = connection.cursor()
+    cursor.execute("UPDATE usernames SET username = %s WHERE username = %s;", (new_username, old_username))
+    connection.commit()
+    cursor.close()
+    connection.close()
+
+def get_user(id):
+    connection = psycopg2.connect(
+    dbname="postgres_db",
+    user="postgres_user",
+    password="postgres_password",
+    host="localhost",
+    port="5430"
+    )
+    cursor = connection.cursor()
+    max_id = _get_last_id(cursor)
+    if id <= max_id:
+        cursor.execute("SELECT username FROM usernames WHERE id = %s", (id,))
+        username = cursor.fetchall()[0][0]
+    else:
+        username = 'Error'
+    cursor.close()
+    connection.close()
+    return username

src/Backend/docker-compose1.yml

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+version: '3.9'
+
+services:
+  postgres:
+    image: postgres:latest
+    container_name: postgres_container
+    environment:
+      POSTGRES_USER: postgres_user
+      POSTGRES_PASSWORD: postgres_password
+      POSTGRES_DB: postgres_db
+      PGDATA: /var/lib/postgresql/data/pgdata
+    ports:
+      - "5430:5432"
+    volumes:
+      - ./pgdata:/var/lib/postgresql/data/pgdata
+    deploy:
+      resources:
+        limits:
+          cpus: '0.50'
+          memory: 512M
+        reservations:
+          cpus: '0.25'
+          memory: 256M
+    command: >
+      postgres -c max_connections=1000
+               -c shared_buffers=256MB
+               -c effective_cache_size=768MB
+               -c maintenance_work_mem=64MB
+               -c checkpoint_completion_target=0.7
+               -c wal_buffers=16MB
+               -c default_statistics_target=100
+    healthcheck:
+      test: [ "CMD-SHELL", "pg_isready -U postgres_user -d postgres_db" ]
+      interval: 30s
+      timeout: 10s
+      retries: 5
+    restart: unless-stopped
+    tty: true
+    stdin_open: true
+
+volumes:
+  pgdata:
+    driver: local

src/Backend/docker-compose2.yml

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+version: "3.9"
+services:
+  minio:
+    image: minio/minio:latest
+    ports:
+      - "9000:9000"
+      - "9001:9001"
+    environment:
+      MINIO_ACCESS_KEY: minioadmin
+      MINIO_SECRET_KEY: minioadmin
+      MINIO_ROOT_USER: minioadmin
+      MINIO_ROOT_PASSWORD: minioadmin
+      MINIO_BROWSER: "on"
+    volumes:
+      - ./data:/data
+    command: server /data --console-address ":9001"
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:9000/minio/health/live"]
+      interval: 30s
+      timeout: 20s
+      retries: 3
+    restart: unless-stopped