import pytest
from fastapi.testclient import TestClient
from sqlalchemy import select
from sqlalchemy.orm import Session

from allmende_payment_system.app import app
from allmende_payment_system.database import ensure_user
from allmende_payment_system.models import Account, Permission, User, UserGroup


@pytest.fixture
def admin_user(test_db):
    user_info = {"username": "admin", "display_name": "The Administrator"}
    user = ensure_user(user_info, test_db)

    group = UserGroup(id=1, name="Admins")
    group.permissions.append(Permission(scope="user", action="edit"))
    group.permissions.append(Permission(scope="account", action="edit"))
    user.user_groups.append(group)
    test_db.add(group)
    test_db.flush()
    return "admin"


def test_user_add_group(test_db, client, admin_user):
    user_info = {"username": "test", "display_name": "Display Test"}
    user = ensure_user(user_info, test_db)

    group = UserGroup(name="Bosses")
    test_db.add(group)
    test_db.flush()

    assert 0 == len(user.user_groups)

    response = client.post(
        f"/admin/users/{user.id}/add_group",
        data={"group_id": group.id},
        user=admin_user,
        follow_redirects=False,
    )
    assert response.status_code == 303

    user = test_db.execute(select(User).where(User.username == "test")).scalar()
    assert 1 == len(user.user_groups)
    assert "Bosses" == user.user_groups[0].name


def test_user_remove_group(test_db, client, admin_user):
    user_info = {"username": "test", "display_name": "Display Test"}
    user = ensure_user(user_info, test_db)

    group = UserGroup(name="Bosses")
    test_db.add(group)
    user.user_groups.append(group)
    test_db.flush()

    assert 1 == len(user.user_groups)

    response = client.get(
        f"/admin/users/{user.id}/remove_group/{group.id}",
        user=admin_user,
        follow_redirects=False,
    )
    assert response.status_code == 303

    user = test_db.execute(select(User).where(User.username == "test")).scalar()
    assert 0 == len(user.user_groups)


def test_group_add_permission(test_db, client, admin_user):
    group = test_db.query(UserGroup).scalar()

    response = client.post(
        f"/admin/groups/{group.id}/add_permission",
        data={"permission": "foo:bar"},
        user=admin_user,
        follow_redirects=False,
    )
    assert response.status_code == 303

    group = test_db.execute(select(UserGroup).where(UserGroup.id == group.id)).scalar()
    assert any(
        perm.scope == "foo" and perm.action == "bar" for perm in group.permissions
    )


def test_group_add_permission_illegal_format(test_db, client, admin_user):
    group = test_db.query(UserGroup).scalar()

    response = client.post(
        f"/admin/groups/{group.id}/add_permission",
        data={"permission": "foobar"},
        user=admin_user,
        follow_redirects=False,
    )
    assert response.status_code == 400


def test_group_remove_permission(test_db, client, admin_user):
    group = test_db.query(UserGroup).scalar()
    num_permissions_before = len(group.permissions)
    response = client.get(
        f"/admin/groups/{group.id}/remove_permission/1",
        user=admin_user,
        follow_redirects=False,
    )
    assert response.status_code == 303
    group = test_db.execute(select(UserGroup).where(UserGroup.id == group.id)).scalar()
    assert num_permissions_before - 1 == len(group.permissions)


def test_create_group(test_db, client, admin_user):
    response = client.post(
        "/admin/groups/create",
        data={"name": "New Group", "description": "A newly created group"},
        user=admin_user,
        follow_redirects=False,
    )
    assert response.status_code == 303
    assert test_db.query(UserGroup).filter_by(name="New Group").scalar() is not None


def test_delete_group(test_db, client, admin_user):
    group = UserGroup(name="To Be Deleted")
    test_db.add(group)
    test_db.flush()
    response = client.get(f"/admin/groups/{group.id}/delete", user=admin_user)
    assert response.status_code == 200
    assert (
        test_db.execute(select(UserGroup).where(UserGroup.id == group.id)).scalar()
        is None
    )


def test_create_account(test_db, client, admin_user):
    response = client.post(
        "/admin/accounts/new",
        data={"account_name": "New Account"},
        user=admin_user,
        follow_redirects=False,
    )
    assert response.status_code == 303
    assert test_db.query(Account).filter_by(name="New Account").scalar() is not None

    # try to create another account with the same name, should fail
    response = client.post(
        "/admin/accounts/new",
        data={"account_name": "New Account"},
        user=admin_user,
        follow_redirects=False,
    )
    assert response.status_code == 400


def test_add_user_to_account(test_db, client, admin_user):
    user_info = {"username": "test", "display_name": "Display Test"}
    user = ensure_user(user_info, test_db)

    account = Account(name="Test Account")
    test_db.add(account)
    test_db.flush()

    response = client.post(
        f"/admin/accounts/{account.id}/add_user",
        data={"user_id": user.id},
        user=admin_user,
        follow_redirects=False,
    )
    assert response.status_code == 303

    account = test_db.execute(select(Account).where(Account.id == account.id)).scalar()
    assert any(u.username == "test" for u in account.users)


def test_add_balance_to_account(test_db, client, admin_user):
    account = Account(name="Test Account")
    test_db.add(account)
    test_db.flush()

    response = client.post(
        f"/admin/accounts/{account.id}/add_balance",
        data={"amount": "100.00"},
        user=admin_user,
        follow_redirects=False,
    )
    assert response.status_code == 303

    account = test_db.execute(select(Account).where(Account.id == account.id)).scalar()
    assert account.balance == 100.00