"""Small import fallbacks for running focused tests without optional services."""

import sys
import types


try:
    import psycopg2  # noqa: F401
except ModuleNotFoundError:
    psycopg2 = types.ModuleType("psycopg2")
    extras = types.ModuleType("psycopg2.extras")
    errors = types.ModuleType("psycopg2.errors")

    class Json:
        def __init__(self, adapted):
            self.adapted = adapted

    class RealDictCursor:
        pass

    class UniqueViolation(Exception):
        pass

    def connect(**_kwargs):
        raise AssertionError("Tests must mock PostgreSQL connections")

    def execute_values(*_args, **_kwargs):
        raise AssertionError("Tests must mock bulk PostgreSQL writes")

    extras.Json = Json
    extras.RealDictCursor = RealDictCursor
    extras.execute_values = execute_values
    errors.UniqueViolation = UniqueViolation
    psycopg2.connect = connect
    psycopg2.extras = extras
    psycopg2.errors = errors
    sys.modules["psycopg2"] = psycopg2
    sys.modules["psycopg2.extras"] = extras
    sys.modules["psycopg2.errors"] = errors


try:
    import bcrypt  # noqa: F401
except ModuleNotFoundError:
    bcrypt = types.ModuleType("bcrypt")

    def unavailable(*_args, **_kwargs):
        raise AssertionError("Tests exercising bcrypt require project dependencies")

    bcrypt.gensalt = unavailable
    bcrypt.hashpw = unavailable
    bcrypt.checkpw = unavailable
    sys.modules["bcrypt"] = bcrypt


try:
    import jwt  # noqa: F401
except ModuleNotFoundError:
    jwt = types.ModuleType("jwt")
    exceptions = types.ModuleType("jwt.exceptions")

    class ExpiredSignatureError(Exception):
        pass

    class InvalidTokenError(Exception):
        pass

    def unavailableJwt(*_args, **_kwargs):
        raise AssertionError("Tests exercising JWT encoding require project dependencies")

    jwt.encode = unavailableJwt
    jwt.decode = unavailableJwt
    exceptions.ExpiredSignatureError = ExpiredSignatureError
    exceptions.InvalidTokenError = InvalidTokenError
    jwt.exceptions = exceptions
    sys.modules["jwt"] = jwt
    sys.modules["jwt.exceptions"] = exceptions