s3-credentials list-buckets --details should show region and website URL, if configured

[simonw]

Could also return that URL from the s3-credentials list-buckets --details command - which would then also need to be able to figure out what region the bucket is in.

Originally posted by @simonw in #21 (comment)

[simonw]

Prototype:

@@ -730,6 +755,9 @@ def list_buckets(buckets, details, nl, csv, tsv, **boto_options):
                     ).items()
                     if key != "ResponseMetadata"
                 )
+                region = s3.get_bucket_location(Bucket=bucket["Name"])["LocationConstraint"]
                 try:
                     pab = s3.get_public_access_block(
                         Bucket=bucket["Name"],
@@ -746,6 +774,7 @@ def list_buckets(buckets, details, nl, csv, tsv, **boto_options):
                     )
                 except s3.exceptions.ClientError:
                     bucket_website = None
+                bucket["region"] = region
                 bucket["bucket_acl"] = bucket_acl
                 bucket["public_access_block"] = pab
                 bucket["bucket_website"] = bucket_website

I'm seeing null for my buckets. https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/s3.html#S3.Client.get_bucket_location explains why:

Buckets in Region us-east-1 have a LocationConstraint of null.

[simonw]

Example output:

% s3-credentials list-buckets sfms-history sfms-slides --details 
[
  {
    "Name": "sfms-history",
    "CreationDate": "2022-06-28 17:55:10+00:00",
    "region": "us-east-1",
    "bucket_acl": {
      "Owner": {
        "DisplayName": "swillison",
        "ID": "36b2eeee501c5952a8ac119f9e5212277a4c01eccfa8d6a9d670bba1e2d5f441"
      },
      "Grants": [
        {
          "Grantee": {
            "DisplayName": "swillison",
            "ID": "36b2eeee501c5952a8ac119f9e5212277a4c01eccfa8d6a9d670bba1e2d5f441",
            "Type": "CanonicalUser"
          },
          "Permission": "FULL_CONTROL"
        }
      ]
    },
    "public_access_block": null,
    "bucket_website": null
  },
  {
    "Name": "sfms-slides",
    "CreationDate": "2022-08-12 15:45:24+00:00",
    "region": "us-east-1",
    "bucket_acl": {
      "Owner": {
        "DisplayName": "swillison",
        "ID": "36b2eeee501c5952a8ac119f9e5212277a4c01eccfa8d6a9d670bba1e2d5f441"
      },
      "Grants": [
        {
          "Grantee": {
            "DisplayName": "swillison",
            "ID": "36b2eeee501c5952a8ac119f9e5212277a4c01eccfa8d6a9d670bba1e2d5f441",
            "Type": "CanonicalUser"
          },
          "Permission": "FULL_CONTROL"
        }
      ]
    },
    "public_access_block": null,
    "bucket_website": {
      "IndexDocument": {
        "Suffix": "index.html"
      },
      "ErrorDocument": {
        "Key": "error.html"
      },
      "url": "http://sfms-slides.s3-website.us-east-1.amazonaws.com/"
    }
  }
]