--
-- Copyright © 2016-2022 The Thingsboard Authors
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
--     http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--

-- AUDIT LOGS MIGRATION START
DO
$$
    DECLARE table_partition RECORD;
    BEGIN
        -- in case of running the upgrade script a second time:
        IF NOT (SELECT exists(SELECT FROM pg_tables WHERE tablename = 'old_audit_log')) THEN
            ALTER TABLE audit_log RENAME TO old_audit_log;
            CREATE INDEX IF NOT EXISTS idx_old_audit_log_created_time ON old_audit_log(created_time);

            ALTER INDEX IF EXISTS idx_audit_log_tenant_id_and_created_time RENAME TO idx_old_audit_log_tenant_id_and_created_time;

            FOR table_partition IN SELECT tablename AS name, split_part(tablename, '_', 3) AS partition_ts
            FROM pg_tables WHERE tablename LIKE 'audit_log_%'
            LOOP
                EXECUTE format('ALTER TABLE %s RENAME TO old_audit_log_%s', table_partition.name, table_partition.partition_ts);
            END LOOP;
        ELSE
            RAISE NOTICE 'Table old_audit_log already exists, leaving as is';
        END IF;
    END;
$$;

CREATE TABLE IF NOT EXISTS audit_log (
    id uuid NOT NULL,
    created_time bigint NOT NULL,
    tenant_id uuid,
    customer_id uuid,
    entity_id uuid,
    entity_type varchar(255),
    entity_name varchar(255),
    user_id uuid,
    user_name varchar(255),
    action_type varchar(255),
    action_data varchar(1000000),
    action_status varchar(255),
    action_failure_details varchar(1000000)
) PARTITION BY RANGE (created_time);
CREATE INDEX IF NOT EXISTS idx_audit_log_tenant_id_and_created_time ON audit_log(tenant_id, created_time DESC);
CREATE INDEX IF NOT EXISTS idx_audit_log_id ON audit_log(id);

CREATE OR REPLACE PROCEDURE migrate_audit_logs(IN start_time_ms BIGINT, IN end_time_ms BIGINT, IN partition_size_ms BIGINT)
    LANGUAGE plpgsql AS
$$
DECLARE
    p RECORD;
    partition_end_ts BIGINT;
BEGIN
    FOR p IN SELECT DISTINCT (created_time - created_time % partition_size_ms) AS partition_ts FROM old_audit_log
    WHERE created_time >= start_time_ms AND created_time < end_time_ms
    LOOP
        partition_end_ts = p.partition_ts + partition_size_ms;
        RAISE NOTICE '[audit_log] Partition to create : [%-%]', p.partition_ts, partition_end_ts;
        EXECUTE format('CREATE TABLE IF NOT EXISTS audit_log_%s PARTITION OF audit_log ' ||
         'FOR VALUES FROM ( %s ) TO ( %s )', p.partition_ts, p.partition_ts, partition_end_ts);
    END LOOP;

    INSERT INTO audit_log
    SELECT id, created_time, tenant_id, customer_id, entity_id, entity_type, entity_name, user_id, user_name, action_type, action_data, action_status, action_failure_details
    FROM old_audit_log
    WHERE created_time >= start_time_ms AND created_time < end_time_ms;
END;
$$;
-- AUDIT LOGS MIGRATION END


-- EDGE EVENTS MIGRATION START
DO
$$
    DECLARE table_partition RECORD;
    BEGIN
    -- in case of running the upgrade script a second time:
        IF NOT (SELECT exists(SELECT FROM pg_tables WHERE tablename = 'old_edge_event')) THEN
            ALTER TABLE edge_event RENAME TO old_edge_event;
            CREATE INDEX IF NOT EXISTS idx_old_edge_event_created_time_tmp ON old_edge_event(created_time);
            ALTER INDEX IF EXISTS idx_edge_event_tenant_id_and_created_time RENAME TO idx_old_edge_event_tenant_id_and_created_time;

            FOR table_partition IN SELECT tablename AS name, split_part(tablename, '_', 3) AS partition_ts
            FROM pg_tables WHERE tablename LIKE 'edge_event_%'
            LOOP
                EXECUTE format('ALTER TABLE %s RENAME TO old_edge_event_%s', table_partition.name, table_partition.partition_ts);
            END LOOP;
        ELSE
            RAISE NOTICE 'Table old_edge_event already exists, leaving as is';
        END IF;
END;
$$;

CREATE TABLE IF NOT EXISTS edge_event (
    id uuid NOT NULL,
    created_time bigint NOT NULL,
    edge_id uuid,
    edge_event_type varchar(255),
    edge_event_uid varchar(255),
    entity_id uuid,
    edge_event_action varchar(255),
    body varchar(10000000),
    tenant_id uuid,
    ts bigint NOT NULL
    ) PARTITION BY RANGE (created_time);
CREATE INDEX IF NOT EXISTS idx_edge_event_tenant_id_and_created_time ON edge_event(tenant_id, created_time DESC);
CREATE INDEX IF NOT EXISTS idx_edge_event_id ON edge_event(id);

CREATE OR REPLACE PROCEDURE migrate_edge_event(IN start_time_ms BIGINT, IN end_time_ms BIGINT, IN partition_size_ms BIGINT)
    LANGUAGE plpgsql AS
$$
DECLARE
    p RECORD;
    partition_end_ts BIGINT;
BEGIN
    FOR p IN SELECT DISTINCT (created_time - created_time % partition_size_ms) AS partition_ts FROM old_edge_event
    WHERE created_time >= start_time_ms AND created_time < end_time_ms
    LOOP
        partition_end_ts = p.partition_ts + partition_size_ms;
        RAISE NOTICE '[edge_event] Partition to create : [%-%]', p.partition_ts, partition_end_ts;
        EXECUTE format('CREATE TABLE IF NOT EXISTS edge_event_%s PARTITION OF edge_event ' ||
               'FOR VALUES FROM ( %s ) TO ( %s )', p.partition_ts, p.partition_ts, partition_end_ts);
    END LOOP;

    INSERT INTO edge_event
    SELECT id, created_time, edge_id, edge_event_type, edge_event_uid, entity_id, edge_event_action, body, tenant_id, ts
    FROM old_edge_event
    WHERE created_time >= start_time_ms AND created_time < end_time_ms;
END;
$$;
-- EDGE EVENTS MIGRATION END
