/*
 * This file and its contents are licensed under the Apache License 2.0.
 * Please see the included NOTICE for copyright information and
 * LICENSE-APACHE for a copy of the license.
 */
#include <postgres.h>
#include <fmgr.h>
#include <utils/timestamp.h>
#include <utils/lsyscache.h>

#include "export.h"
#include "cross_module_fn.h"
#include "guc.h"
#include "bgw/job.h"

TS_FUNCTION_INFO_V1(ts_add_drop_chunks_policy);
TS_FUNCTION_INFO_V1(ts_add_reorder_policy);
TS_FUNCTION_INFO_V1(ts_add_compress_chunks_policy);
TS_FUNCTION_INFO_V1(ts_remove_drop_chunks_policy);
TS_FUNCTION_INFO_V1(ts_remove_reorder_policy);
TS_FUNCTION_INFO_V1(ts_remove_compress_chunks_policy);
TS_FUNCTION_INFO_V1(ts_alter_job_schedule);
TS_FUNCTION_INFO_V1(ts_reorder_chunk);
TS_FUNCTION_INFO_V1(ts_move_chunk);
TS_FUNCTION_INFO_V1(ts_partialize_agg);
TS_FUNCTION_INFO_V1(ts_finalize_agg_sfunc);
TS_FUNCTION_INFO_V1(ts_finalize_agg_ffunc);
TS_FUNCTION_INFO_V1(ts_continuous_agg_invalidation_trigger);
TS_FUNCTION_INFO_V1(ts_compress_chunk);
TS_FUNCTION_INFO_V1(ts_decompress_chunk);
TS_FUNCTION_INFO_V1(ts_compressed_data_decompress_forward);
TS_FUNCTION_INFO_V1(ts_compressed_data_decompress_reverse);

TS_FUNCTION_INFO_V1(ts_compressed_data_send);
TS_FUNCTION_INFO_V1(ts_compressed_data_recv);
TS_FUNCTION_INFO_V1(ts_compressed_data_in);
TS_FUNCTION_INFO_V1(ts_compressed_data_out);

TS_FUNCTION_INFO_V1(ts_deltadelta_compressor_append);
TS_FUNCTION_INFO_V1(ts_deltadelta_compressor_finish);
TS_FUNCTION_INFO_V1(ts_gorilla_compressor_append);
TS_FUNCTION_INFO_V1(ts_gorilla_compressor_finish);
TS_FUNCTION_INFO_V1(ts_dictionary_compressor_append);
TS_FUNCTION_INFO_V1(ts_dictionary_compressor_finish);
TS_FUNCTION_INFO_V1(ts_array_compressor_append);
TS_FUNCTION_INFO_V1(ts_array_compressor_finish);

TS_FUNCTION_INFO_V1(ts_server_add);
TS_FUNCTION_INFO_V1(ts_server_delete);
TS_FUNCTION_INFO_V1(ts_timescaledb_fdw_handler);
TS_FUNCTION_INFO_V1(ts_timescaledb_fdw_validator);

Datum
ts_add_drop_chunks_policy(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->add_drop_chunks_policy(fcinfo));
}

Datum
ts_add_reorder_policy(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->add_reorder_policy(fcinfo));
}

Datum
ts_add_compress_chunks_policy(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->add_compress_chunks_policy(fcinfo));
}

Datum
ts_remove_drop_chunks_policy(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->remove_drop_chunks_policy(fcinfo));
}

Datum
ts_remove_reorder_policy(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->remove_reorder_policy(fcinfo));
}

Datum
ts_remove_compress_chunks_policy(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->remove_compress_chunks_policy(fcinfo);
}

Datum
ts_alter_job_schedule(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->alter_job_schedule(fcinfo));
}

Datum
ts_reorder_chunk(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->reorder_chunk(fcinfo));
}

Datum
ts_move_chunk(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->move_chunk(fcinfo);
}

Datum
ts_continuous_agg_invalidation_trigger(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->continuous_agg_trigfn(fcinfo));
}

Datum
ts_server_add(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->add_server(fcinfo));
}

Datum
ts_server_delete(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->delete_server(fcinfo));
}

Datum
ts_timescaledb_fdw_handler(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->timescaledb_fdw_handler(fcinfo));
}

Datum
ts_timescaledb_fdw_validator(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->timescaledb_fdw_validator(fcinfo));
}

/*
 * stub function to trigger aggregate util functions.
 */
Datum
ts_partialize_agg(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->partialize_agg(fcinfo));
}

Datum
ts_finalize_agg_sfunc(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->finalize_agg_sfunc(fcinfo));
}

Datum
ts_finalize_agg_ffunc(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->finalize_agg_ffunc(fcinfo));
}

Datum
ts_compressed_data_decompress_forward(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->compressed_data_decompress_forward(fcinfo);
}

Datum
ts_compressed_data_decompress_reverse(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->compressed_data_decompress_reverse(fcinfo);
}

Datum
ts_compressed_data_send(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->compressed_data_send(fcinfo);
}

Datum
ts_compressed_data_recv(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->compressed_data_recv(fcinfo);
}

Datum
ts_compressed_data_in(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->compressed_data_in(fcinfo);
}

Datum
ts_compressed_data_out(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->compressed_data_out(fcinfo);
}

Datum
ts_deltadelta_compressor_append(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->deltadelta_compressor_append(fcinfo);
}

Datum
ts_deltadelta_compressor_finish(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->deltadelta_compressor_finish(fcinfo);
}

Datum
ts_gorilla_compressor_append(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->gorilla_compressor_append(fcinfo);
}

Datum
ts_gorilla_compressor_finish(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->gorilla_compressor_finish(fcinfo);
}

Datum
ts_dictionary_compressor_append(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->dictionary_compressor_append(fcinfo);
}

Datum
ts_dictionary_compressor_finish(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->dictionary_compressor_finish(fcinfo);
}

Datum
ts_array_compressor_append(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->array_compressor_append(fcinfo);
}

Datum
ts_array_compressor_finish(PG_FUNCTION_ARGS)
{
	return ts_cm_functions->array_compressor_finish(fcinfo);
}

Datum
ts_compress_chunk(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->compress_chunk(fcinfo));
}

Datum
ts_decompress_chunk(PG_FUNCTION_ARGS)
{
	PG_RETURN_DATUM(ts_cm_functions->decompress_chunk(fcinfo));
}

/*
 * casting a function pointer to a pointer of another type is undefined
 * behavior, so we need one of these for every function type we have
 */

static void
error_no_default_fn_community(void)
{
	ereport(ERROR,
			(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
			 errmsg("functionality not supported under the current license \"%s\", license",
					ts_guc_license_key),
			 errhint(
				 "Upgrade to a Timescale-licensed binary to access this free community feature")));
}

static void
error_no_default_fn_enterprise(void)
{
	ereport(ERROR,
			(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
			 errmsg("functionality not supported under the current license \"%s\", license",
					ts_guc_license_key),
			 errhint("Request a trial license to try this feature for free or contact us for more "
					 "information at https://www.timescale.com/pricing")));
}

static bool
error_no_default_fn_bool_void_community(void)
{
	error_no_default_fn_community();
	pg_unreachable();
}

static bool
error_no_default_fn_bool_void_enterprise(void)
{
	error_no_default_fn_enterprise();
	pg_unreachable();
}

static void
tsl_license_on_assign_default_fn(const char *newval, const void *license)
{
	error_no_default_fn_community();
}

static TimestampTz
license_end_time_default_fn(void)
{
	error_no_default_fn_community();
	pg_unreachable();
}

static void
add_telemetry_default(JsonbParseState *parseState)
{
	error_no_default_fn_community();
}

static bool
bgw_policy_job_execute_default_fn(BgwJob *job)
{
	error_no_default_fn_enterprise();
	pg_unreachable();
}

static bool
cagg_materialize_default_fn(int32 materialization_id, ContinuousAggMatOptions *options)
{
	error_no_default_fn_community();
	pg_unreachable();
}

static bool
process_compress_table_default(AlterTableCmd *cmd, Hypertable *ht,
							   WithClauseResult *with_clause_options)
{
	error_no_default_fn_community();
	pg_unreachable();
}

static Datum
error_no_default_fn_pg_community(PG_FUNCTION_ARGS)
{
	ereport(ERROR,
			(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
			 errmsg("function \"%s\" is not supported under the current license \"%s\"",
					get_func_name(fcinfo->flinfo->fn_oid),
					ts_guc_license_key),
			 errhint(
				 "Upgrade to a Timescale-licensed binary to access this free community feature")));
	pg_unreachable();
}

static List *
get_servername_list_default_fn(void)
{
	error_no_default_fn_community();
	return NIL;
}

static void
hypertable_make_distributed_default_fn(Hypertable *ht, ArrayType *servers)
{
	error_no_default_fn_community();
}

static void
cache_syscache_invalidate_default(Datum arg, int cacheid, uint32 hashvalue)
{
	/* The default is a no-op */
}

static Datum
error_no_default_fn_pg_enterprise(PG_FUNCTION_ARGS)
{
	ereport(ERROR,
			(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
			 errmsg("function \"%s\" is not supported under the current license \"%s\"",
					get_func_name(fcinfo->flinfo->fn_oid),
					ts_guc_license_key),
			 errhint("Request a trial license to try this feature for free or contact us for more "
					 "information at https://www.timescale.com/pricing")));
	pg_unreachable();
}

static bool
process_cagg_viewstmt_default(ViewStmt *stmt, const char *query_string, void *pstmt,
							  WithClauseResult *with_clause_options)
{
	return error_no_default_fn_bool_void_community();
}

static void
continuous_agg_update_options_default(ContinuousAgg *cagg, WithClauseResult *with_clause_options)
{
	error_no_default_fn_community();
	pg_unreachable();
}

static void
continuous_agg_drop_chunks_by_chunk_id_default(int32 raw_hypertable_id, Chunk **chunks,
											   Size num_chunks, Datum older_than_datum,
											   Datum newer_than_datum, Oid older_than_type,
											   Oid newer_than_type, bool cascade, int32 log_level,
											   bool user_supplied_table_name)
{
	error_no_default_fn_community();
}

static Datum
empty_fn(PG_FUNCTION_ARGS)
{
	PG_RETURN_VOID();
}

/*
 * Define cross-module functions' default values:
 * If the submodule isn't activated, using one of the cm functions will throw an
 * exception.
 */
TSDLLEXPORT CrossModuleFunctions ts_cm_functions_default = {
	.tsl_license_on_assign = tsl_license_on_assign_default_fn,
	.enterprise_enabled_internal = error_no_default_fn_bool_void_enterprise,
	.check_tsl_loaded = error_no_default_fn_bool_void_community,
	.license_end_time = license_end_time_default_fn,
	.print_tsl_license_expiration_info_hook = NULL,
	.module_shutdown_hook = NULL,
	.add_tsl_license_info_telemetry = add_telemetry_default,
	.bgw_policy_job_execute = bgw_policy_job_execute_default_fn,
	.continuous_agg_materialize = cagg_materialize_default_fn,
	.add_drop_chunks_policy = error_no_default_fn_pg_community,
	.add_reorder_policy = error_no_default_fn_pg_community,
	.add_compress_chunks_policy = error_no_default_fn_pg_community,
	.remove_drop_chunks_policy = error_no_default_fn_pg_community,
	.remove_reorder_policy = error_no_default_fn_pg_community,
	.remove_compress_chunks_policy = error_no_default_fn_pg_community,
	.create_upper_paths_hook = NULL,
	.set_rel_pathlist_dml = NULL,
	.set_rel_pathlist_query = NULL,
	.gapfill_marker = error_no_default_fn_pg_community,
	.gapfill_int16_time_bucket = error_no_default_fn_pg_community,
	.gapfill_int32_time_bucket = error_no_default_fn_pg_community,
	.gapfill_int64_time_bucket = error_no_default_fn_pg_community,
	.gapfill_date_time_bucket = error_no_default_fn_pg_community,
	.gapfill_timestamp_time_bucket = error_no_default_fn_pg_community,
	.gapfill_timestamptz_time_bucket = error_no_default_fn_pg_community,
	.alter_job_schedule = error_no_default_fn_pg_community,
	.reorder_chunk = error_no_default_fn_pg_community,
	.move_chunk = error_no_default_fn_pg_enterprise,
	.ddl_command_start = NULL,
	.ddl_command_end = NULL,
	.sql_drop = NULL,
	.partialize_agg = error_no_default_fn_pg_community,
	.finalize_agg_sfunc = error_no_default_fn_pg_community,
	.finalize_agg_ffunc = error_no_default_fn_pg_community,
	.process_cagg_viewstmt = process_cagg_viewstmt_default,
	.continuous_agg_drop_chunks_by_chunk_id = continuous_agg_drop_chunks_by_chunk_id_default,
	.continuous_agg_trigfn = error_no_default_fn_pg_community,
	.continuous_agg_update_options = continuous_agg_update_options_default,

	.compressed_data_send = error_no_default_fn_pg_community,
	.compressed_data_recv = error_no_default_fn_pg_community,
	.compressed_data_in = error_no_default_fn_pg_community,
	.compressed_data_out = error_no_default_fn_pg_community,
	.process_compress_table = process_compress_table_default,
	.compress_chunk = error_no_default_fn_pg_community,
	.decompress_chunk = error_no_default_fn_pg_community,
	.compressed_data_decompress_forward = error_no_default_fn_pg_community,
	.compressed_data_decompress_reverse = error_no_default_fn_pg_community,
	.deltadelta_compressor_append = error_no_default_fn_pg_community,
	.deltadelta_compressor_finish = error_no_default_fn_pg_community,
	.gorilla_compressor_append = error_no_default_fn_pg_community,
	.gorilla_compressor_finish = error_no_default_fn_pg_community,
	.dictionary_compressor_append = error_no_default_fn_pg_community,
	.dictionary_compressor_finish = error_no_default_fn_pg_community,
	.array_compressor_append = error_no_default_fn_pg_community,
	.array_compressor_finish = error_no_default_fn_pg_community,

	.add_server = error_no_default_fn_pg_community,
	.delete_server = error_no_default_fn_pg_community,
	.show_chunk = error_no_default_fn_pg_community,
	.create_chunk = error_no_default_fn_pg_community,
	.get_servername_list = get_servername_list_default_fn,
	.hypertable_make_distributed = hypertable_make_distributed_default_fn,
	.timescaledb_fdw_handler = error_no_default_fn_pg_community,
	.timescaledb_fdw_validator = empty_fn,
	.cache_syscache_invalidate = cache_syscache_invalidate_default,
};

TSDLLEXPORT CrossModuleFunctions *ts_cm_functions = &ts_cm_functions_default;