prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Moving files to S3 should be idempotent
  ### Is your feature request related to a problem? Please describe.
  Moving files to S3 will always upload the file, even if it already exists.
  
  ### Describe the solution you'd like
  Check if it already exists
  
  ### Motivation
  
  ### Describe alternatives you've considered
  
  ### Additional context
  
  
  </issue>
  <code>
  [start of website/thaliawebsite/management/commands/migratemedia.py]
  1 import logging
  2 import os
  3 
  4 from django.conf import settings
  5 from django.core.management.base import BaseCommand
  6 
  7 import boto3
  8 from botocore.exceptions import ClientError
  9 
  10 
  11 class Command(BaseCommand):
  12     def handle(self, *args, **options):
  13         if not settings.AWS_STORAGE_BUCKET_NAME:
  14             logging.error("No AWS settings found")
  15             return
  16 
  17         # create session to s3
  18         session = boto3.session.Session()
  19         s3_client = session.client(
  20             service_name="s3",
  21             aws_access_key_id=settings.AWS_ACCESS_KEY_ID,
  22             aws_secret_access_key=settings.AWS_SECRET_ACCESS_KEY,
  23         )
  24 
  25         # process migrate local media files to s3
  26         for full_path in self._get_all_media_file():
  27             try:
  28                 upload_path = self._split_path_to_upload(full_path)
  29                 s3_client.upload_file(
  30                     full_path, settings.AWS_STORAGE_BUCKET_NAME, upload_path
  31                 )
  32                 print(f"success upload {upload_path}")
  33                 logging.info(f"success upload {upload_path}")
  34             except ClientError as e:
  35                 print(f"failed upload {upload_path}")
  36                 logging.error(f"{e}: {upload_path}")
  37 
  38     def _get_all_media_file(self) -> [str]:
  39         files = []
  40         for r, d, f in os.walk(settings.MEDIA_ROOT):
  41             for file in f:
  42                 files.append(os.path.join(r, file))
  43         return files
  44 
  45     def _split_path_to_upload(self, full_path: str) -> str:
  46         media_root = settings.MEDIA_ROOT
  47         upload_path = full_path.split(media_root)[-1][1:]
  48         return upload_path
  49
  [end of website/thaliawebsite/management/commands/migratemedia.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/website/thaliawebsite/management/commands/migratemedia.py b/website/thaliawebsite/management/commands/migratemedia.py
  --- a/website/thaliawebsite/management/commands/migratemedia.py
  +++ b/website/thaliawebsite/management/commands/migratemedia.py
  @@ -24,8 +24,25 @@
   
           # process migrate local media files to s3
           for full_path in self._get_all_media_file():
  +            upload_path = self._split_path_to_upload(full_path)
               try:
  -                upload_path = self._split_path_to_upload(full_path)
  +                try:
  +                    remote_file = s3_client.head_object(
  +                        Bucket=settings.AWS_STORAGE_BUCKET_NAME, Key=upload_path
  +                    )
  +                except ClientError as e:
  +                    if e.response["Error"]["Code"] == "404":
  +                        remote_file = None
  +                    else:
  +                        raise e
  +
  +                if remote_file:
  +                    # file already exists
  +                    # note that this will not check if the file contents are the same
  +                    print(f"file already exists {upload_path}")
  +                    logging.info(f"file already exists {upload_path}")
  +                    continue
  +
                   s3_client.upload_file(
                       full_path, settings.AWS_STORAGE_BUCKET_NAME, upload_path
                   )
  
verification_info: {"golden_diff": "diff --git a/website/thaliawebsite/management/commands/migratemedia.py b/website/thaliawebsite/management/commands/migratemedia.py\n--- a/website/thaliawebsite/management/commands/migratemedia.py\n+++ b/website/thaliawebsite/management/commands/migratemedia.py\n@@ -24,8 +24,25 @@\n \n         # process migrate local media files to s3\n         for full_path in self._get_all_media_file():\n+            upload_path = self._split_path_to_upload(full_path)\n             try:\n-                upload_path = self._split_path_to_upload(full_path)\n+                try:\n+                    remote_file = s3_client.head_object(\n+                        Bucket=settings.AWS_STORAGE_BUCKET_NAME, Key=upload_path\n+                    )\n+                except ClientError as e:\n+                    if e.response[\"Error\"][\"Code\"] == \"404\":\n+                        remote_file = None\n+                    else:\n+                        raise e\n+\n+                if remote_file:\n+                    # file already exists\n+                    # note that this will not check if the file contents are the same\n+                    print(f\"file already exists {upload_path}\")\n+                    logging.info(f\"file already exists {upload_path}\")\n+                    continue\n+\n                 s3_client.upload_file(\n                     full_path, settings.AWS_STORAGE_BUCKET_NAME, upload_path\n                 )\n", "issue": "Moving files to S3 should be idempotent\n### Is your feature request related to a problem? Please describe.\r\nMoving files to S3 will always upload the file, even if it already exists.\r\n\r\n### Describe the solution you'd like\r\nCheck if it already exists\r\n\r\n### Motivation\r\n\r\n### Describe alternatives you've considered\r\n\r\n### Additional context\r\n\n", "before_files": [{"content": "import logging\nimport os\n\nfrom django.conf import settings\nfrom django.core.management.base import BaseCommand\n\nimport boto3\nfrom botocore.exceptions import ClientError\n\n\nclass Command(BaseCommand):\n    def handle(self, *args, **options):\n        if not settings.AWS_STORAGE_BUCKET_NAME:\n            logging.error(\"No AWS settings found\")\n            return\n\n        # create session to s3\n        session = boto3.session.Session()\n        s3_client = session.client(\n            service_name=\"s3\",\n            aws_access_key_id=settings.AWS_ACCESS_KEY_ID,\n            aws_secret_access_key=settings.AWS_SECRET_ACCESS_KEY,\n        )\n\n        # process migrate local media files to s3\n        for full_path in self._get_all_media_file():\n            try:\n                upload_path = self._split_path_to_upload(full_path)\n                s3_client.upload_file(\n                    full_path, settings.AWS_STORAGE_BUCKET_NAME, upload_path\n                )\n                print(f\"success upload {upload_path}\")\n                logging.info(f\"success upload {upload_path}\")\n            except ClientError as e:\n                print(f\"failed upload {upload_path}\")\n                logging.error(f\"{e}: {upload_path}\")\n\n    def _get_all_media_file(self) -> [str]:\n        files = []\n        for r, d, f in os.walk(settings.MEDIA_ROOT):\n            for file in f:\n                files.append(os.path.join(r, file))\n        return files\n\n    def _split_path_to_upload(self, full_path: str) -> str:\n        media_root = settings.MEDIA_ROOT\n        upload_path = full_path.split(media_root)[-1][1:]\n        return upload_path\n", "path": "website/thaliawebsite/management/commands/migratemedia.py"}]}