fix: slove merge conflict with main

.env.example

@@ -52,7 +52,7 @@ SITE_NAME=${SITE_NAME:-"DTM-Drone Tasking Manager"}
 BASE_URL=${BASE_URL:-http://localhost:8000/api}
 API_URL_V1=${API_URL_V1:-http://localhost:8000/api}
 NODE_ODM_URL=${NODE_ODM_URL:-http://odm-api:3000}
-COG_URL=${COG_URL:-"http://localhost:9090/api/v1/buckets/dtm-data/objects/download?prefix="}
+COG_URL=${COG_URL}
 
 
 ### ODM ###

src/backend/app/s3.py

@@ -213,3 +213,21 @@ def get_object_metadata(bucket_name: str, object_name: str):
     """
     client = s3_client()
     return client.stat_object(bucket_name, object_name)
+
+
+def get_cog_path(bucket_name: str, project_id: str, task_id: str):
+    """Generate the presigned URL for a COG file in an S3 bucket.
+
+    Args:
+        bucket_name (str): The name of the S3 bucket.
+        project_id (str): The unique project identifier.
+        orthophoto_name (str): The name of the COG file.
+
+    Returns:
+        str: The presigned URL to access the COG file.
+    """
+    # Construct the S3 path for the COG file
+    s3_path = f"dtm-data/projects/{project_id}/{task_id}/orthophoto/odm_orthophoto.tif"
+
+    # Get the presigned URL
+    return get_presigned_url(bucket_name, s3_path)