import base64
import hmac
import http

from s3file import views


class TestS3MockView:
    url = "/__s3_mock__/"

    policy = (
        "eyJDb25kaXRpb25zIjogW3siYnVja2V0IjogInRlc3QtYnVja2V0In0sIFsic3RhcnRz"
        "LXdpdGgiLCAiJGtleSIsICJ0bXAvczNmaWxlLzNlUWhwOTZYU1dldFFwZ1VVQmZzWHci"
        "XSwgeyJzdWNjZXNzX2FjdGlvbl9zdGF0dXMiOiAiMjAxIn0sIFsic3RhcnRzLXdpdGgi"
        "LCAiJENvbnRlbnQtVHlwZSIsICIiXV0sICJFeHBpcmVzSW4iOiAxMjA5NjAwfQ=="
    )
    date = "20190616T184210Z"

    def test_post__bad_request(self, rf):
        request = rf.post(self.url, data={})
        response = views.S3MockView.as_view()(request)
        assert response.status_code == http.HTTPStatus.BAD_REQUEST

    def test_post__created(self, client, upload_file):
        with open(upload_file) as fp:
            response = client.post(
                self.url,
                data={
                    "x-amz-signature": "T1Mb71D45h1u2SBoUHOMBNFCI2AgrKAg1UzKdUHUHig=",
                    "x-amz-algorithm": "AWS4-HMAC-SHA256",
                    "x-amz-date": self.date,
                    "x-amz-credential": "testaccessid",
                    "policy": self.policy,
                    "key": "tmp/s3file/3eQhp96XSWetQpgUUBfsXw/${filename}",
                    "success_action_status": "201",
                    "file": fp,
                },
            )
        assert response.status_code == http.HTTPStatus.CREATED

    def test_post__bad_signature(self, client, upload_file):

        bad_signature = base64.b64encode(
            hmac.new(b"eve", (self.policy + self.date).encode(), "sha256").digest()
        ).decode()
        with open(upload_file) as fp:
            response = client.post(
                self.url,
                data={
                    "x-amz-signature": bad_signature,
                    "x-amz-algorithm": "AWS4-HMAC-SHA256",
                    "x-amz-date": self.date,
                    "x-amz-credential": "testaccessid",
                    "policy": self.policy,
                    "key": "tmp/s3file/3eQhp96XSWetQpgUUBfsXw/${filename}",
                    "success_action_status": "201",
                    "file": fp,
                },
            )
        assert response.status_code == http.HTTPStatus.FORBIDDEN

    def test_post__not_a_signature(self, client, upload_file):
        bad_signature = "eve"
        with open(upload_file) as fp:
            response = client.post(
                self.url,
                data={
                    "x-amz-signature": bad_signature,
                    "x-amz-algorithm": "AWS4-HMAC-SHA256",
                    "x-amz-date": self.date,
                    "x-amz-credential": "testaccessid",
                    "policy": self.policy,
                    "key": "tmp/s3file/3eQhp96XSWetQpgUUBfsXw/${filename}",
                    "success_action_status": "201",
                    "file": fp,
                },
            )
        assert response.status_code == http.HTTPStatus.BAD_REQUEST