from datetime import datetime
from logging import ERROR
from typing import List
from unittest import mock

import pytest

from aurweb import config, db, models
from aurweb.models import Package, PackageBase, PackageRequest, User
from aurweb.models.account_type import TRUSTED_USER_ID, USER_ID
from aurweb.models.request_type import ORPHAN_ID
from aurweb.scripts import notify, rendercomment
from aurweb.testing.email import Email
from aurweb.testing.smtp import FakeSMTP, FakeSMTP_SSL

aur_location = config.get("options", "aur_location")
aur_request_ml = config.get("options", "aur_request_ml")


@pytest.fixture(autouse=True)
def setup(db_test):
    return


@pytest.fixture
def user() -> User:
    with db.begin():
        user = db.create(User, Username="test", Email="test@example.org",
                         Passwd=str(), AccountTypeID=USER_ID)
    yield user


@pytest.fixture
def user1() -> User:
    with db.begin():
        user1 = db.create(User, Username="user1", Email="user1@example.org",
                          Passwd=str(), AccountTypeID=USER_ID)
    yield user1


@pytest.fixture
def user2() -> User:
    with db.begin():
        user2 = db.create(User, Username="user2", Email="user2@example.org",
                          Passwd=str(), AccountTypeID=USER_ID)
    yield user2


@pytest.fixture
def pkgbases(user: User) -> List[PackageBase]:
    now = int(datetime.utcnow().timestamp())

    output = []
    with db.begin():
        for i in range(5):
            output.append(
                db.create(PackageBase, Name=f"pkgbase_{i}",
                          Maintainer=user, SubmittedTS=now,
                          ModifiedTS=now))
            db.create(models.PackageNotification, PackageBase=output[-1],
                      User=user)
    yield output


@pytest.fixture
def pkgreq(user2: User, pkgbases: List[PackageBase]):
    pkgbase = pkgbases[0]
    with db.begin():
        pkgreq_ = db.create(PackageRequest, PackageBase=pkgbase,
                            PackageBaseName=pkgbase.Name, User=user2,
                            ReqTypeID=ORPHAN_ID,
                            Comments="This is a request test comment.",
                            ClosureComment=str())
    yield pkgreq_


@pytest.fixture
def packages(pkgbases: List[PackageBase]) -> List[Package]:
    output = []
    with db.begin():
        for i, pkgbase in enumerate(pkgbases):
            output.append(
                db.create(Package, PackageBase=pkgbase,
                          Name=f"pkg_{i}", Version=f"{i}.0"))
    yield output


def test_out_of_date(user: User, user1: User, user2: User,
                     pkgbases: List[PackageBase]):
    pkgbase = pkgbases[0]
    # Create two comaintainers. We'll pass the maintainer uid to
    # FlagNotification, so we should expect to get two emails.
    with db.begin():
        db.create(models.PackageComaintainer,
                  PackageBase=pkgbase, User=user1, Priority=1)
        db.create(models.PackageComaintainer,
                  PackageBase=pkgbase, User=user2, Priority=2)

    # Send the notification for pkgbases[0].
    notif = notify.FlagNotification(user.ID, pkgbases[0].ID)
    notif.send()

    # Should've gotten three emails: maintainer + the two comaintainers.
    assert Email.count() == 3

    # Comaintainer 1.
    first = Email(1).parse()
    assert first.headers.get("To") == user1.Email

    expected = f"AUR Out-of-date Notification for {pkgbase.Name}"
    assert first.headers.get("Subject") == expected

    # Comaintainer 2.
    second = Email(2).parse()
    assert second.headers.get("To") == user2.Email

    # Maintainer.
    third = Email(3).parse()
    assert third.headers.get("To") == user.Email


def test_reset(user: User):
    with db.begin():
        user.ResetKey = "12345678901234567890123456789012"

    notif = notify.ResetKeyNotification(user.ID)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    expected = "AUR Password Reset"
    assert email.headers.get("Subject") == expected

    expected = f"""\
A password reset request was submitted for the account test associated
with your email address. If you wish to reset your password follow the
link [1] below, otherwise ignore this message and nothing will happen.

[1] {aur_location}/passreset/?resetkey=12345678901234567890123456789012\
"""
    assert email.body == expected


def test_welcome(user: User):
    with db.begin():
        user.ResetKey = "12345678901234567890123456789012"

    notif = notify.WelcomeNotification(user.ID)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    expected = "Welcome to the Arch User Repository"
    assert email.headers.get("Subject") == expected

    expected = f"""\
Welcome to the Arch User Repository! In order to set an initial
password for your new account, please click the link [1] below. If the
link does not work, try copying and pasting it into your browser.

[1] {aur_location}/passreset/?resetkey=12345678901234567890123456789012\
"""
    assert email.body == expected


def test_comment(user: User, user2: User, pkgbases: List[PackageBase]):
    pkgbase = pkgbases[0]

    with db.begin():
        comment = db.create(models.PackageComment, PackageBase=pkgbase,
                            User=user2, Comments="This is a test comment.")
    rendercomment.update_comment_render_fastapi(comment)

    notif = notify.CommentNotification(user2.ID, pkgbase.ID, comment.ID)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == user.Email
    expected = f"AUR Comment for {pkgbase.Name}"
    assert email.headers.get("Subject") == expected

    expected = f"""\
{user2.Username} [1] added the following comment to {pkgbase.Name} [2]:

This is a test comment.

--
If you no longer wish to receive notifications about this package,
please go to the package page [2] and select "Disable notifications".

[1] {aur_location}/account/{user2.Username}/
[2] {aur_location}/pkgbase/{pkgbase.Name}/\
"""
    assert expected == email.body


def test_update(user: User, user2: User, pkgbases: List[PackageBase]):
    pkgbase = pkgbases[0]
    with db.begin():
        user.UpdateNotify = 1

    notif = notify.UpdateNotification(user2.ID, pkgbase.ID)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == user.Email
    expected = f"AUR Package Update: {pkgbase.Name}"
    assert email.headers.get("Subject") == expected

    expected = f"""\
{user2.Username} [1] pushed a new commit to {pkgbase.Name} [2].

--
If you no longer wish to receive notifications about this package,
please go to the package page [2] and select "Disable notifications".

[1] {aur_location}/account/{user2.Username}/
[2] {aur_location}/pkgbase/{pkgbase.Name}/\
"""
    assert expected == email.body


def test_adopt(user: User, user2: User, pkgbases: List[PackageBase]):
    pkgbase = pkgbases[0]
    notif = notify.AdoptNotification(user2.ID, pkgbase.ID)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == user.Email
    expected = f"AUR Ownership Notification for {pkgbase.Name}"
    assert email.headers.get("Subject") == expected

    expected = f"""\
The package {pkgbase.Name} [1] was adopted by {user2.Username} [2].

[1] {aur_location}/pkgbase/{pkgbase.Name}/
[2] {aur_location}/account/{user2.Username}/\
"""
    assert email.body == expected


def test_disown(user: User, user2: User, pkgbases: List[PackageBase]):
    pkgbase = pkgbases[0]
    notif = notify.DisownNotification(user2.ID, pkgbase.ID)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == user.Email
    expected = f"AUR Ownership Notification for {pkgbase.Name}"
    assert email.headers.get("Subject") == expected

    expected = f"""\
The package {pkgbase.Name} [1] was disowned by {user2.Username} [2].

[1] {aur_location}/pkgbase/{pkgbase.Name}/
[2] {aur_location}/account/{user2.Username}/\
"""
    assert email.body == expected


def test_comaintainer_addition(user: User, pkgbases: List[PackageBase]):
    pkgbase = pkgbases[0]
    notif = notify.ComaintainerAddNotification(user.ID, pkgbase.ID)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == user.Email
    expected = f"AUR Co-Maintainer Notification for {pkgbase.Name}"
    assert email.headers.get("Subject") == expected

    expected = f"""\
You were added to the co-maintainer list of {pkgbase.Name} [1].

[1] {aur_location}/pkgbase/{pkgbase.Name}/\
"""
    assert email.body == expected


def test_comaintainer_removal(user: User, pkgbases: List[PackageBase]):
    pkgbase = pkgbases[0]
    notif = notify.ComaintainerRemoveNotification(user.ID, pkgbase.ID)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == user.Email
    expected = f"AUR Co-Maintainer Notification for {pkgbase.Name}"
    assert email.headers.get("Subject") == expected

    expected = f"""\
You were removed from the co-maintainer list of {pkgbase.Name} [1].

[1] {aur_location}/pkgbase/{pkgbase.Name}/\
"""
    assert email.body == expected


def test_delete(user: User, user2: User, pkgbases: List[PackageBase]):
    pkgbase = pkgbases[0]
    notif = notify.DeleteNotification(user2.ID, pkgbase.ID)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == user.Email
    expected = f"AUR Package deleted: {pkgbase.Name}"
    assert email.headers.get("Subject") == expected

    expected = f"""\
{user2.Username} [1] deleted {pkgbase.Name} [2].

You will no longer receive notifications about this package.

[1] {aur_location}/account/{user2.Username}/
[2] {aur_location}/pkgbase/{pkgbase.Name}/\
"""
    assert email.body == expected


def test_merge(user: User, user2: User, pkgbases: List[PackageBase]):
    source, target = pkgbases[:2]
    notif = notify.DeleteNotification(user2.ID, source.ID, target.ID)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == user.Email
    expected = f"AUR Package deleted: {source.Name}"
    assert email.headers.get("Subject") == expected

    expected = f"""\
{user2.Username} [1] merged {source.Name} [2] into {target.Name} [3].

--
If you no longer wish receive notifications about the new package,
please go to [3] and click "Disable notifications".

[1] {aur_location}/account/{user2.Username}/
[2] {aur_location}/pkgbase/{source.Name}/
[3] {aur_location}/pkgbase/{target.Name}/\
"""
    assert email.body == expected


def set_tu(users: List[User]) -> User:
    with db.begin():
        for user in users:
            user.AccountTypeID = TRUSTED_USER_ID


def test_open_close_request(user: User, user2: User,
                            pkgreq: PackageRequest,
                            pkgbases: List[PackageBase]):
    set_tu([user])
    pkgbase = pkgbases[0]

    # Send an open request notification.
    notif = notify.RequestOpenNotification(
        user2.ID, pkgreq.ID, pkgreq.RequestType.Name, pkgbase.ID)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == aur_request_ml
    assert email.headers.get("Cc") == ", ".join([user.Email, user2.Email])
    expected = f"[PRQ#{pkgreq.ID}] Orphan Request for {pkgbase.Name}"
    assert email.headers.get("Subject") == expected

    expected = f"""\
{user2.Username} [1] filed an orphan request for {pkgbase.Name} [2]:

This is a request test comment.

[1] {aur_location}/account/{user2.Username}/
[2] {aur_location}/pkgbase/{pkgbase.Name}/\
"""
    assert email.body == expected

    # Now send a closure notification on the pkgbase we just opened.
    notif = notify.RequestCloseNotification(user2.ID, pkgreq.ID, "rejected")
    notif.send()
    assert Email.count() == 2

    email = Email(2).parse()
    assert email.headers.get("To") == aur_request_ml
    assert email.headers.get("Cc") == ", ".join([user.Email, user2.Email])
    expected = f"[PRQ#{pkgreq.ID}] Orphan Request for {pkgbase.Name} Rejected"
    assert email.headers.get("Subject") == expected

    expected = f"""\
Request #{pkgreq.ID} has been rejected by {user2.Username} [1].

[1] {aur_location}/account/{user2.Username}/\
"""
    assert email.body == expected

    # Test auto-accept.
    notif = notify.RequestCloseNotification(0, pkgreq.ID, "accepted")
    notif.send()
    assert Email.count() == 3

    email = Email(3).parse()
    assert email.headers.get("To") == aur_request_ml
    assert email.headers.get("Cc") == ", ".join([user.Email, user2.Email])
    expected = (f"[PRQ#{pkgreq.ID}] Orphan Request for "
                f"{pkgbase.Name} Accepted")
    assert email.headers.get("Subject") == expected

    expected = (f"Request #{pkgreq.ID} has been accepted automatically "
                "by the Arch User Repository\npackage request system.")
    assert email.body == expected


def test_close_request_comaintainer_cc(user: User, user2: User,
                                       pkgreq: PackageRequest,
                                       pkgbases: List[PackageBase]):
    pkgbase = pkgbases[0]
    with db.begin():
        db.create(models.PackageComaintainer, PackageBase=pkgbase,
                  User=user2, Priority=1)

    notif = notify.RequestCloseNotification(0, pkgreq.ID, "accepted")
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == aur_request_ml
    assert email.headers.get("Cc") == ", ".join([user.Email, user2.Email])


def test_close_request_closure_comment(user: User, user2: User,
                                       pkgreq: PackageRequest,
                                       pkgbases: List[PackageBase]):
    pkgbase = pkgbases[0]
    with db.begin():
        pkgreq.ClosureComment = "This is a test closure comment."

    notif = notify.RequestCloseNotification(user2.ID, pkgreq.ID, "accepted")
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == aur_request_ml
    assert email.headers.get("Cc") == ", ".join([user.Email, user2.Email])
    expected = f"[PRQ#{pkgreq.ID}] Orphan Request for {pkgbase.Name} Accepted"
    assert email.headers.get("Subject") == expected

    expected = f"""\
Request #{pkgreq.ID} has been accepted by {user2.Username} [1]:

This is a test closure comment.

[1] {aur_location}/account/{user2.Username}/\
"""
    assert email.body == expected


def test_tu_vote_reminders(user: User):
    set_tu([user])

    vote_id = 1
    notif = notify.TUVoteReminderNotification(vote_id)
    notif.send()
    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == user.Email
    expected = f"TU Vote Reminder: Proposal {vote_id}"
    assert email.headers.get("Subject") == expected

    expected = f"""\
Please remember to cast your vote on proposal {vote_id} [1]. The voting period
ends in less than 48 hours.

[1] {aur_location}/tu/?id={vote_id}\
"""
    assert email.body == expected


def test_notify_main(user: User):
    """ Test TU vote reminder through aurweb.notify.main(). """
    set_tu([user])

    vote_id = 1
    args = ["aurweb-notify", "tu-vote-reminder", str(vote_id)]
    with mock.patch("sys.argv", args):
        notify.main()

    assert Email.count() == 1

    email = Email(1).parse()
    assert email.headers.get("To") == user.Email
    expected = f"TU Vote Reminder: Proposal {vote_id}"
    assert email.headers.get("Subject") == expected

    expected = f"""\
Please remember to cast your vote on proposal {vote_id} [1]. The voting period
ends in less than 48 hours.

[1] {aur_location}/tu/?id={vote_id}\
"""
    assert email.body == expected


# Save original config.get; we're going to mock it and need
# to be able to fallback when we are not overriding.
config_get = config.get


def mock_smtp_config(cls):
    def _mock_smtp_config(section: str, key: str):
        if section == "notifications":
            if key == "sendmail":
                return cls()
            elif key == "smtp-use-ssl":
                return cls(0)
            elif key == "smtp-use-starttls":
                return cls(0)
            elif key == "smtp-user":
                return cls()
            elif key == "smtp-password":
                return cls()
        return cls(config_get(section, key))
    return _mock_smtp_config


def test_smtp(user: User):
    with db.begin():
        user.ResetKey = "12345678901234567890123456789012"

    SMTP = FakeSMTP()

    get = "aurweb.config.get"
    getboolean = "aurweb.config.getboolean"
    with mock.patch(get, side_effect=mock_smtp_config(str)):
        with mock.patch(getboolean, side_effect=mock_smtp_config(bool)):
            with mock.patch("smtplib.SMTP", side_effect=lambda a, b: SMTP):
                config.rehash()
                notif = notify.WelcomeNotification(user.ID)
                notif.send()
    config.rehash()
    assert len(SMTP.emails) == 1


def mock_smtp_starttls_config(cls):
    def _mock_smtp_starttls_config(section: str, key: str):
        if section == "notifications":
            if key == "sendmail":
                return cls()
            elif key == "smtp-use-ssl":
                return cls(0)
            elif key == "smtp-use-starttls":
                return cls(1)
            elif key == "smtp-user":
                return cls("test")
            elif key == "smtp-password":
                return cls("password")
        return cls(config_get(section, key))
    return _mock_smtp_starttls_config


def test_smtp_starttls(user: User):
    # This test does two things: test starttls path and test
    # path where we have a backup email.

    with db.begin():
        user.ResetKey = "12345678901234567890123456789012"
        user.BackupEmail = "backup@example.org"

    SMTP = FakeSMTP()

    get = "aurweb.config.get"
    getboolean = "aurweb.config.getboolean"
    with mock.patch(get, side_effect=mock_smtp_starttls_config(str)):
        with mock.patch(
                getboolean, side_effect=mock_smtp_starttls_config(bool)):
            with mock.patch("smtplib.SMTP", side_effect=lambda a, b: SMTP):
                notif = notify.WelcomeNotification(user.ID)
                notif.send()
    assert SMTP.starttls_enabled
    assert SMTP.user
    assert SMTP.passwd

    assert len(SMTP.emails) == 2
    to = SMTP.emails[0][1]
    assert to == [user.Email]

    to = SMTP.emails[1][1]
    assert to == [user.BackupEmail]


def mock_smtp_ssl_config(cls):
    def _mock_smtp_ssl_config(section: str, key: str):
        if section == "notifications":
            if key == "sendmail":
                return cls()
            elif key == "smtp-use-ssl":
                return cls(1)
            elif key == "smtp-use-starttls":
                return cls(0)
            elif key == "smtp-user":
                return cls("test")
            elif key == "smtp-password":
                return cls("password")
        return cls(config_get(section, key))
    return _mock_smtp_ssl_config


def test_smtp_ssl(user: User):
    with db.begin():
        user.ResetKey = "12345678901234567890123456789012"

    SMTP = FakeSMTP_SSL()

    get = "aurweb.config.get"
    getboolean = "aurweb.config.getboolean"
    with mock.patch(get, side_effect=mock_smtp_ssl_config(str)):
        with mock.patch(getboolean, side_effect=mock_smtp_ssl_config(bool)):
            with mock.patch("smtplib.SMTP_SSL", side_effect=lambda a, b: SMTP):
                notif = notify.WelcomeNotification(user.ID)
                notif.send()
    assert len(SMTP.emails) == 1
    assert SMTP.use_ssl
    assert SMTP.user
    assert SMTP.passwd


def test_notification_defaults():
    notif = notify.Notification()
    assert notif.get_refs() == tuple()
    assert notif.get_headers() == dict()
    assert notif.get_cc() == list()


def test_notification_oserror(user: User, caplog: pytest.LogCaptureFixture):
    """ Try sending a notification with a bad SMTP configuration. """
    caplog.set_level(ERROR)
    config_get = config.get

    mocked_options = {
        "sendmail": str(),
        "smtp-server": "mail.server.xyz",
        "smtp-port": "587",
        "smtp-user": "notify@server.xyz",
        "smtp-password": "notify_server_xyz",
        "sender": "notify@server.xyz",
        "reply-to": "no-reply@server.xyz"
    }

    def mock_config_get(section: str, key: str) -> str:
        if section == "notifications":
            if key in mocked_options:
                return mocked_options.get(key)
        return config_get(section, key)

    notif = notify.WelcomeNotification(user.ID)
    with mock.patch("aurweb.config.get", side_effect=mock_config_get):
        notif.send()

    expected = "Unable to emit notification due to an OSError"
    assert expected in caplog.text