import boto3
import pytest

from botocore.exceptions import ClientError
from datetime import datetime
from moto import mock_ec2, settings
from uuid import uuid4
from unittest import SkipTest

from .helpers import rsa_check_private_key


RSA_PUBLIC_KEY_OPENSSH = b"""\
ssh-rsa \
AAAAB3NzaC1yc2EAAAADAQABAAABAQDusXfgTE4eBP50NglSzCSEGnIL6+cr6m3H\
6cZANOQ+P1o/W4BdtcAL3sor4iGi7SOeJgo\\8kweyMQrhrt6HaKGgromRiz37LQx\
4YIAcBi4Zd023mO/V7Rc2Chh18mWgLSmA6ng+j37ip6452zxtv0jHAz9pJolbKBp\
JzbZlPN45ZCTk9ck0fSVHRl6VRSSPQcpqi65XpRf+35zNOCGCc1mAOOTmw59Q2a6\
A3t8mL7r91aM5q6QOQm219lctFM8O7HRJnDgmhGpnjRwE1LyKktWTbgFZ4SNWU2X\
qusUO07jKuSxzPumXBeU+JEtx0J1tqZwJlpGt2R+0qN7nKnPl2+hx \
moto@github.com"""

RSA_PUBLIC_KEY_RFC4716 = b"""\
---- BEGIN SSH2 PUBLIC KEY ----
AAAAB3NzaC1yc2EAAAADAQABAAABAQDusXfgTE4eBP50NglSzCSEGnIL6+cr6m3H6cZANO
Q+P1o/W4BdtcAL3sor4iGi7SOeJgo8kweyMQrhrt6HaKGgromRiz37LQx4YIAcBi4Zd023
mO/V7Rc2Chh18mWgLSmA6ng+j37ip6452zxtv0jHAz9pJolbKBpJzbZlPN45ZCTk9ck0fS
VHRl6VRSSPQcpqi65XpRf+35zNOCGCc1mAOOTmw59Q2a6A3t8mL7r91aM5q6QOQm219lct
FM8O7HRJnDgmhGpnjRwE1LyKktWTbgFZ4SNWU2XqusUO07jKuSxzPumXBeU+JEtx0J1tqZ
wJlpGt2R+0qN7nKnPl2+hx
---- END SSH2 PUBLIC KEY ----
"""

RSA_PUBLIC_KEY_FINGERPRINT = "6a:49:07:1c:7e:bd:d2:bd:96:25:fe:b5:74:83:ae:fd"

DSA_PUBLIC_KEY_OPENSSH = b"""ssh-dss \
AAAAB3NzaC1kc3MAAACBAJ0aXctVwbN6VB81gpo8R7DUk8zXRjZvrkg8Y8vEGt63gklpNJNsLXtEUXkl5D4c0nD2FZO1rJNqFoe\
OQOCoGSfclHvt9w4yPl/lUEtb3Qtj1j80MInETHr19vaSunRk5R+M+8YH+LLcdYdz7MijuGey02mbi0H9K5nUIcuLMArVAAAAFQ\
D0RDvsObRWBlnaW8645obZBM86jwAAAIBNZwf3B4krIzAwVfkMHLDSdAvs7lOWE7o8SJLzr9t4a9HhYp9SLbMzJ815KWfidEYV2\
+s4ZaPCfcZ1GENFRbE8rixz5eMAjEUXEPMJkblDZTHzMsH96z2cOCQZ0vfOmgznsf18Uf725pqo9OqAioEsTJjX8jtI2qNPEBU0\
uhMSZQAAAIBBMGhDu5CWPUlS2QG7vzmzw81XasmHE/s2YPDRbolkriwlunpgwZhCscoQP8HFHY+DLUVvUb+GZwBmFt4l1uHl03b\
ffsm7UIHtCBYERr9Nx0u20ldfhkgB1lhaJb5o0ZJ3pmJ38KChfyHe5EUcqRdEFo89Mp72VI2Z6UHyL175RA== \
moto@github.com"""


@mock_ec2
def test_key_pairs_empty_boto3():
    if settings.TEST_SERVER_MODE:
        raise SkipTest("ServerMode is not guaranteed to be empty")
    client = boto3.client("ec2", "us-west-1")
    assert client.describe_key_pairs()["KeyPairs"] == []


@mock_ec2
def test_key_pairs_invalid_id_boto3():
    client = boto3.client("ec2", "us-west-1")

    with pytest.raises(ClientError) as ex:
        client.describe_key_pairs(KeyNames=[str(uuid4())])
    assert ex.value.response["ResponseMetadata"]["HTTPStatusCode"] == 400
    assert "RequestId" in ex.value.response["ResponseMetadata"]
    assert ex.value.response["Error"]["Code"] == "InvalidKeyPair.NotFound"


@mock_ec2
def test_key_pairs_create_dryrun_boto3():
    ec2 = boto3.resource("ec2", "us-west-1")

    with pytest.raises(ClientError) as ex:
        ec2.create_key_pair(KeyName="foo", DryRun=True)
    assert ex.value.response["Error"]["Code"] == "DryRunOperation"
    assert ex.value.response["ResponseMetadata"]["HTTPStatusCode"] == 412
    assert (
        ex.value.response["Error"]["Message"]
        == "An error occurred (DryRunOperation) when calling the CreateKeyPair operation: Request would have succeeded, but DryRun flag is set"
    )


@mock_ec2
def test_key_pairs_create_boto3():
    ec2 = boto3.resource("ec2", "us-west-1")
    client = boto3.client("ec2", "us-west-1")

    key_name = str(uuid4())[0:6]
    kp = ec2.create_key_pair(KeyName=key_name)
    rsa_check_private_key(kp.key_material)
    # Verify the client can create a key_pair as well - should behave the same
    key_name2 = str(uuid4())
    kp2 = client.create_key_pair(KeyName=key_name2)
    rsa_check_private_key(kp2["KeyMaterial"])

    assert kp.key_material != kp2["KeyMaterial"]

    kps = client.describe_key_pairs()["KeyPairs"]
    all_names = set([k["KeyName"] for k in kps])
    assert key_name in all_names
    assert key_name2 in all_names

    kps = client.describe_key_pairs(KeyNames=[key_name])["KeyPairs"]
    assert len(kps) == 1
    assert "KeyPairId" in kps[0]
    assert kps[0]["KeyName"] == key_name
    assert "KeyFingerprint" in kps[0]
    assert isinstance(kps[0]["CreateTime"], datetime)


@mock_ec2
def test_key_pairs_create_exist_boto3():
    client = boto3.client("ec2", "us-west-1")
    key_name = str(uuid4())[0:6]
    client.create_key_pair(KeyName=key_name)

    with pytest.raises(ClientError) as ex:
        client.create_key_pair(KeyName=key_name)
    assert ex.value.response["ResponseMetadata"]["HTTPStatusCode"] == 400
    assert "RequestId" in ex.value.response["ResponseMetadata"]
    assert ex.value.response["Error"]["Code"] == "InvalidKeyPair.Duplicate"


@mock_ec2
def test_key_pairs_delete_no_exist_boto3():
    client = boto3.client("ec2", "us-west-1")
    client.delete_key_pair(KeyName=str(uuid4())[0:6])


@mock_ec2
def test_key_pairs_delete_exist_boto3():
    client = boto3.client("ec2", "us-west-1")
    key_name = str(uuid4())[0:6]
    client.create_key_pair(KeyName=key_name)

    with pytest.raises(ClientError) as ex:
        client.delete_key_pair(KeyName=key_name, DryRun=True)
    assert ex.value.response["Error"]["Code"] == "DryRunOperation"
    assert ex.value.response["ResponseMetadata"]["HTTPStatusCode"] == 412
    assert (
        ex.value.response["Error"]["Message"]
        == "An error occurred (DryRunOperation) when calling the DeleteKeyPair operation: Request would have succeeded, but DryRun flag is set"
    )

    client.delete_key_pair(KeyName=key_name)
    assert key_name not in [
        kp.get("Name") for kp in client.describe_key_pairs()["KeyPairs"]
    ]


@mock_ec2
def test_key_pairs_import_boto3():
    client = boto3.client("ec2", "us-west-1")

    key_name = str(uuid4())[0:6]
    with pytest.raises(ClientError) as ex:
        client.import_key_pair(
            KeyName=key_name, PublicKeyMaterial=RSA_PUBLIC_KEY_OPENSSH, DryRun=True
        )
    assert ex.value.response["Error"]["Code"] == "DryRunOperation"
    assert ex.value.response["ResponseMetadata"]["HTTPStatusCode"] == 412
    assert (
        ex.value.response["Error"]["Message"]
        == "An error occurred (DryRunOperation) when calling the ImportKeyPair operation: Request would have succeeded, but DryRun flag is set"
    )

    kp1 = client.import_key_pair(
        KeyName=key_name, PublicKeyMaterial=RSA_PUBLIC_KEY_OPENSSH
    )

    assert "KeyPairId" in kp1
    assert kp1["KeyName"] == key_name
    assert kp1["KeyFingerprint"] == RSA_PUBLIC_KEY_FINGERPRINT

    key_name2 = str(uuid4())
    kp2 = client.import_key_pair(
        KeyName=key_name2, PublicKeyMaterial=RSA_PUBLIC_KEY_RFC4716
    )
    assert "KeyPairId" in kp2
    assert kp2["KeyName"] == key_name2
    assert kp2["KeyFingerprint"] == RSA_PUBLIC_KEY_FINGERPRINT

    all_kps = client.describe_key_pairs()["KeyPairs"]
    all_names = [kp["KeyName"] for kp in all_kps]
    assert kp1["KeyName"] in all_names
    assert kp2["KeyName"] in all_names


@mock_ec2
def test_key_pairs_import_exist_boto3():
    client = boto3.client("ec2", "us-west-1")

    key_name = str(uuid4())[0:6]
    kp = client.import_key_pair(
        KeyName=key_name, PublicKeyMaterial=RSA_PUBLIC_KEY_OPENSSH
    )
    assert kp["KeyName"] == key_name

    assert len(client.describe_key_pairs(KeyNames=[key_name])["KeyPairs"]) == 1

    with pytest.raises(ClientError) as ex:
        client.create_key_pair(KeyName=key_name)
    assert ex.value.response["ResponseMetadata"]["HTTPStatusCode"] == 400
    assert "RequestId" in ex.value.response["ResponseMetadata"]
    assert ex.value.response["Error"]["Code"] == "InvalidKeyPair.Duplicate"


@mock_ec2
def test_key_pairs_invalid_boto3():
    client = boto3.client("ec2", "us-west-1")

    with pytest.raises(ClientError) as ex:
        client.import_key_pair(KeyName="foo", PublicKeyMaterial=b"")
    assert ex.value.response["ResponseMetadata"]["HTTPStatusCode"] == 400
    err = ex.value.response["Error"]
    assert err["Code"] == "InvalidKeyPair.Format"
    assert err["Message"] == "Key is not in valid OpenSSH public key format"

    with pytest.raises(ClientError) as ex:
        client.import_key_pair(KeyName="foo", PublicKeyMaterial=b"garbage")
    assert ex.value.response["ResponseMetadata"]["HTTPStatusCode"] == 400
    err = ex.value.response["Error"]
    assert err["Code"] == "InvalidKeyPair.Format"
    assert err["Message"] == "Key is not in valid OpenSSH public key format"

    with pytest.raises(ClientError) as ex:
        client.import_key_pair(KeyName="foo", PublicKeyMaterial=DSA_PUBLIC_KEY_OPENSSH)
    assert ex.value.response["ResponseMetadata"]["HTTPStatusCode"] == 400
    err = ex.value.response["Error"]
    assert err["Code"] == "InvalidKeyPair.Format"
    assert err["Message"] == "Key is not in valid OpenSSH public key format"


@mock_ec2
def test_key_pair_filters_boto3():
    ec2 = boto3.resource("ec2", "us-west-1")
    client = boto3.client("ec2", "us-west-1")

    key_name_1 = str(uuid4())[0:6]
    key_name_2 = str(uuid4())[0:6]
    key_name_3 = str(uuid4())[0:6]
    _ = ec2.create_key_pair(KeyName=key_name_1)
    kp2 = ec2.create_key_pair(KeyName=key_name_2)
    kp3 = ec2.create_key_pair(KeyName=key_name_3)

    kp_by_name = client.describe_key_pairs(
        Filters=[{"Name": "key-name", "Values": [key_name_2]}]
    )["KeyPairs"]
    assert set([kp["KeyName"] for kp in kp_by_name]) == set([kp2.name])

    kp_by_name = client.describe_key_pairs(
        Filters=[{"Name": "fingerprint", "Values": [kp3.key_fingerprint]}]
    )["KeyPairs"]
    assert set([kp["KeyName"] for kp in kp_by_name]) == set([kp3.name])