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Add new API function, api.stats_logs_fn, export logs statistics

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xbgmsharp
2023-08-18 00:54:58 +02:00
parent 5230a83833
commit 306623a55a
1 changed files with 55 additions and 0 deletions
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55
initdb/02_1_2_signalk_api_functions.sql
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@@ -348,3 +348,58 @@ $export_moorages_gpx$ LANGUAGE plpgsql;
COMMENT ON FUNCTION
api.export_moorages_gpx_fn
IS 'Export moorages as gpx';
-- Statistics
DROP FUNCTION IF EXISTS api.stats_logs_fn;
CREATE OR REPLACE FUNCTION api.stats_logs_fn(
IN start_date TEXT DEFAULT NULL,
IN end_date TEXT DEFAULT NULL,
OUT stats JSON) RETURNS JSON AS $stats_logs$
DECLARE
_start_date TIMESTAMP WITHOUT TIME ZONE DEFAULT '1970-01-01';
_end_date TIMESTAMP WITHOUT TIME ZONE DEFAULT NOW();
BEGIN
IF start_date IS NOT NULL AND public.isdate(start_date::text) AND public.isdate(end_date::text) THEN
RAISE WARNING '--> stats_fn, filter result stats by date [%]', start_date;
_start_date := start_date::TIMESTAMP WITHOUT TIME ZONE;
_end_date := end_date::TIMESTAMP WITHOUT TIME ZONE;
END IF;
RAISE WARNING '--> stats_fn, _start_date [%], _end_date [%]', _start_date, _end_date;
WITH
logs_view AS (
SELECT *
FROM api.logbook l
WHERE _from_time >= _start_date::TIMESTAMP WITHOUT TIME ZONE
AND _to_time <= _end_date::TIMESTAMP WITHOUT TIME ZONE + interval '23 hours 59 minutes'
),
max_speed_id AS (
SELECT id FROM logs_view WHERE max_speed = (SELECT max(max_speed) FROM logs_view) ),
max_wind_speed_id AS (
SELECT id FROM logs_view WHERE max_wind_speed = (SELECT max(max_wind_speed) FROM logs_view)),
max_distance_id AS (
SELECT id FROM logs_view WHERE distance = (SELECT max(distance) FROM logs_view)),
max_duration_id AS (
SELECT id FROM logs_view WHERE duration = (SELECT max(duration) FROM logs_view)),
logs_stats AS (
SELECT
count(*) AS count,
max(max_speed) AS max_speed,
max(max_wind_speed) AS max_wind_speed,
max(distance) AS max_distance,
max(duration) AS max_duration,
sum(duration) AS sum_duration
FROM logs_view l )
--select * from logbook;
-- Return a JSON
SELECT jsonb_build_object(
'max_speed_id', max_speed_id.id,
'max_wind_speed_id', max_wind_speed_id.id,
'max_distance_id', max_distance_id.id)::jsonb || to_jsonb(logs_stats.*)::jsonb INTO stats
FROM max_speed_id, max_wind_speed_id, max_distance_id, logs_stats, max_duration_id;
-- TODO Add moorages
END;
$stats_logs$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
api.stats_logs_fn
IS 'Logs stats by date';