#
# Copyright (c) 2012-2022 Snowflake Computing Inc. All rights reserved.
#

from sqlalchemy.testing import exclusions
from sqlalchemy.testing.requirements import SuiteRequirements


class Requirements(SuiteRequirements):
    """
    stay-closed properties

    1. not supported in snowflake

    - autocommit: sqlalchemy's autocommit isolation level concept does not apply to snowflake
    - isolation_level: snowflake only supports read committed
      - ref docs: https://docs.snowflake.com/en/sql-reference/transactions.html#label-txn-autocommit
                  https://docs.sqlalchemy.org/en/14/core/connections.html#setting-transaction-isolation-levels-including-dbapi-autocommit
    - index_ddl_if_exists: index not supported in snowflake
    - non_updating_cascade: updating cascade supported
    - empty_inserts: not supported in snowflake
    - full_returning: not supported in snowflake
    - insert_executemany_returning: not supported in snowflake
    - returning: not supported in snowflake
    - indexes_with_expressions: index not supported in snowflake
    - check_constraint_reflection: not supported in snowflake
    - reflect_tables_no_columns: not supported in snowflake
    - server_side_cursors: no supported in snowflake
    - index_reflects_included_columns: index not supported in snowflake
    - savepoints: not supported in snowflake
    - two_phase_transactions: not supported in snowflake
    - async_dialect: no await used
    - fetch_expression: not supported in snowflake
    - fetch_percent: not supported in snowflake
    - fetch_ties: not supported in snowflake
    - supports_distinct_on: not supported in snowflake
    - time_timezone: not supported in snowflake
    - identity_columns_standard: not supported in snowflake, snowflake does not support setting identity with min max
    - computed_columns: TODO: not supported in snowflake yet, check SNOW-169530 for virtual column
    - computed_columns_default_persisted: TODO: not supported in snowflake yet, check SNOW-169530 for virtual column
    - computed_columns_reflect_persisted: TODO: not supported in snowflake yet, check SNOW-169530 for virtual column
    - computed_columns_virtual: TODO: not supported in snowflake yet, check SNOW-169530 for virtual column
    - computed_columns_stored: TODO: not supported in snowflake yet, check SNOW-169530 for virtual column

    2. potential service side issue / unclear service behavior

    - foreign_key_constraint_option_reflection_ondelete: TODO: check service side issue or by design?
    - fk_constraint_option_reflection_ondelete_restrict: TODO: check service side issue or by design?
    - foreign_key_constraint_option_reflection_onupdate: TODO: check service side issue or by design?
    - fk_constraint_option_reflection_onupdate_restrict: TODO: check service side issue or by design?

    3. connector missing feature

    - dbapi_lastrowid: TODO, not supported in snowflake python connector, support it in the future
    - supports_lastrowid: TODO: not supported, check SNOW-11155

    4. sqlalchemy potentially missing feature
    note: not sure whether these to be supported

    - collate: TODO: order_by_collation
    - datetime_timezone: TODO: default for datetime type, snowflake uses TIMESTAMP_NTZ which
                          contains no time zone info consider creating a new column type TIMESTAMP_TZ for the
                          the time zone info
      - ref: https://docs.snowflake.com/en/sql-reference/data-types-datetime.html#timestamp-ltz-timestamp-ntz-timestamp-tz
    """

    @property
    def table_ddl_if_exists(self):
        return exclusions.open()

    @property
    def table_value_constructor(self):
        return exclusions.open()

    @property
    def deferrable_fks(self):
        return exclusions.open()

    @property
    def boolean_col_expressions(self):
        return exclusions.open()

    @property
    def nullsordering(self):
        return exclusions.open()

    @property
    def standalone_binds(self):
        return exclusions.open()

    @property
    def intersect(self):
        return exclusions.open()

    @property
    def except_(self):
        return exclusions.open()

    @property
    def window_functions(self):
        return exclusions.open()

    @property
    def ctes(self):
        return exclusions.open()

    @property
    def ctes_on_dml(self):
        return exclusions.open()

    @property
    def tuple_in(self):
        return exclusions.open()

    @property
    def emulated_lastrowid(self):
        return exclusions.open()

    @property
    def emulated_lastrowid_even_with_sequences(self):
        return exclusions.open()

    @property
    def views(self):
        return exclusions.open()

    @property
    def cross_schema_fk_reflection(self):
        return exclusions.open()

    @property
    def foreign_key_constraint_name_reflection(self):
        return exclusions.open()

    @property
    def implicit_default_schema(self):
        return exclusions.open()

    @property
    def default_schema_name_switch(self):
        return exclusions.open()

    @property
    def reflects_pk_names(self):
        return exclusions.open()

    @property
    def comment_reflection(self):
        return exclusions.open()

    @property
    def fk_constraint_option_reflection_ondelete_noaction(self):
        return exclusions.open()

    @property
    def temp_table_names(self):
        return exclusions.open()

    @property
    def temporary_views(self):
        return exclusions.open()

    @property
    def unicode_ddl(self):
        return exclusions.open()

    @property
    def datetime_literals(self):
        return exclusions.open()

    @property
    def timestamp_microseconds(self):
        return exclusions.open()

    @property
    def datetime_historic(self):
        return exclusions.open()

    @property
    def date_historic(self):
        return exclusions.open()

    @property
    def legacy_unconditional_json_extract(self):
        return exclusions.open()

    @property
    def precision_numerics_enotation_small(self):
        return exclusions.open()

    @property
    def precision_numerics_enotation_large(self):
        return exclusions.open()

    @property
    def precision_numerics_many_significant_digits(self):
        return exclusions.open()

    @property
    def precision_numerics_retains_significant_digits(self):
        return exclusions.open()

    @property
    def infinity_floats(self):
        return exclusions.open()

    @property
    def update_from(self):
        return exclusions.open()

    @property
    def delete_from(self):
        return exclusions.open()

    @property
    def mod_operator_as_percent_sign(self):
        return exclusions.open()

    @property
    def percent_schema_names(self):
        return exclusions.open()

    @property
    def order_by_label_with_expression(self):
        return exclusions.open()

    @property
    def regexp_match(self):
        return exclusions.open()

    @property
    def regexp_replace(self):
        return exclusions.open()

    @property
    def fetch_first(self):
        return exclusions.open()

    @property
    def fetch_no_order_by(self):
        return exclusions.open()

    @property
    def fetch_offset_with_options(self):
        return exclusions.open()

    @property
    def identity_columns(self):
        return exclusions.open()

    @property
    def duplicate_key_raises_integrity_error(self):
        # Snowflake allows duplicate value for primary key
        return exclusions.closed()

    @property
    def ctes_with_update_delete(self):
        # Snowflake CTE could only be followed by SELECT
        # https://docs.snowflake.com/en/user-guide/queries-cte.html
        return exclusions.closed()

    @property
    def sql_expression_limit_offset(self):
        # Snowflake only takes non-negative integer constants for offset/limit
        return exclusions.closed()

    @property
    def json_type(self):
        # TODO: need service/connector support
        # check https://snowflakecomputing.atlassian.net/browse/SNOW-52370
        return exclusions.closed()

    @property
    def implements_get_lastrowid(self):
        # TODO: need connector lastrowid support, check SNOW-11155
        return exclusions.closed()

    @property
    def implicit_decimal_binds(self):
        # Supporting this would require behavior breaking change to implicitly convert str to Decimal when binding
        # parameters in string forms of decimal values.
        # Check https://snowflakecomputing.atlassian.net/browse/SNOW-640134 for details on breaking changes discussion.
        return exclusions.closed()

    @property
    def datetime_implicit_bound(self):
        # Supporting this would require behavior breaking change to implicitly convert str to datetime when binding
        # parameters in string forms of datetime values.
        # Check https://snowflakecomputing.atlassian.net/browse/SNOW-640134 for details on breaking changes discussion.
        return exclusions.closed()

    @property
    def timestamp_microseconds_implicit_bound(self):
        # Supporting this would require behavior breaking change to implicitly convert str to timestamp when binding
        # parameters in string forms of timestamp values.
        # Check https://snowflakecomputing.atlassian.net/browse/SNOW-640134 for details on breaking changes discussion.
        return exclusions.closed()
