import boto3

from moto import mock_dynamodb


@mock_dynamodb
def test_update_table__billing_mode():
    client = boto3.client("dynamodb", region_name="us-east-1")
    client.create_table(
        TableName="test",
        AttributeDefinitions=[
            {"AttributeName": "client", "AttributeType": "S"},
            {"AttributeName": "app", "AttributeType": "S"},
        ],
        KeySchema=[
            {"AttributeName": "client", "KeyType": "HASH"},
            {"AttributeName": "app", "KeyType": "RANGE"},
        ],
        BillingMode="PAY_PER_REQUEST",
    )

    client.update_table(
        TableName="test",
        BillingMode="PROVISIONED",
        ProvisionedThroughput={"ReadCapacityUnits": 1, "WriteCapacityUnits": 1},
    )

    actual = client.describe_table(TableName="test")["Table"]
    assert actual["BillingModeSummary"] == {"BillingMode": "PROVISIONED"}
    assert actual["ProvisionedThroughput"] == {
        "ReadCapacityUnits": 1,
        "WriteCapacityUnits": 1,
    }


@mock_dynamodb
def test_update_table_throughput():
    conn = boto3.resource("dynamodb", region_name="us-west-2")
    table = conn.create_table(
        TableName="messages",
        KeySchema=[{"AttributeName": "id", "KeyType": "HASH"}],
        AttributeDefinitions=[{"AttributeName": "id", "AttributeType": "S"}],
        ProvisionedThroughput={"ReadCapacityUnits": 5, "WriteCapacityUnits": 5},
    )
    assert table.provisioned_throughput["ReadCapacityUnits"] == 5
    assert table.provisioned_throughput["WriteCapacityUnits"] == 5

    table.update(
        ProvisionedThroughput={"ReadCapacityUnits": 5, "WriteCapacityUnits": 6}
    )

    assert table.provisioned_throughput["ReadCapacityUnits"] == 5
    assert table.provisioned_throughput["WriteCapacityUnits"] == 6


@mock_dynamodb
def test_update_table__enable_stream():
    conn = boto3.client("dynamodb", region_name="us-east-1")

    resp = conn.create_table(
        TableName="test-stream-update",
        KeySchema=[{"AttributeName": "id", "KeyType": "HASH"}],
        AttributeDefinitions=[{"AttributeName": "id", "AttributeType": "S"}],
        ProvisionedThroughput={"ReadCapacityUnits": 1, "WriteCapacityUnits": 1},
    )

    assert "StreamSpecification" not in resp["TableDescription"]

    resp = conn.update_table(
        TableName="test-stream-update",
        StreamSpecification={"StreamEnabled": True, "StreamViewType": "NEW_IMAGE"},
    )

    assert "StreamSpecification" in resp["TableDescription"]
    assert resp["TableDescription"]["StreamSpecification"] == {
        "StreamEnabled": True,
        "StreamViewType": "NEW_IMAGE",
    }
    assert "LatestStreamLabel" in resp["TableDescription"]
    assert "LatestStreamArn" in resp["TableDescription"]