-- Prepared statement for conditional insert with versioning for fieldseeker.samplelocation
-- Only inserts a new version if data has changed

PREPARE insert_samplelocation_versioned(bigint, varchar, varchar, fieldseeker.samplelocation_locationhabitattype_enum, fieldseeker.samplelocation_locationpriority_enum, fieldseeker.samplelocation_samplelocationusetype_enum, fieldseeker.samplelocation_notinuit_f_enum, varchar, varchar, varchar, varchar, timestamp, varchar, integer, uuid, varchar, timestamp, varchar, timestamp, smallint, timestamp, varchar, timestamp, varchar) AS
WITH
-- Get the current latest version of this record
latest_version AS (
  SELECT * FROM fieldseeker.samplelocation
  WHERE objectid = $1
  ORDER BY VERSION DESC
  LIMIT 1
),
-- Calculate the next version number
next_version AS (
  SELECT COALESCE(MAX(VERSION) + 1, 1) as version_num
  FROM fieldseeker.samplelocation
  WHERE objectid = $1
)
-- Perform conditional insert
INSERT INTO fieldseeker.samplelocation (
  objectid, name, zone, habitat, priority, usetype, active, description, accessdesc, comments, externalid, nextactiondatescheduled, zone2, locationnumber, globalid, created_user, created_date, last_edited_user, last_edited_date, gatewaysync, creationdate, creator, editdate, editor,
  VERSION
)
SELECT
  $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19, $20, $21, $22, $23, $24,
  v.version_num
FROM next_version v
WHERE
  -- Only insert if no record exists yet OR data has changed
  NOT EXISTS (SELECT 1 FROM latest_version lv WHERE
    lv.objectid IS NOT DISTINCT FROM $1 AND
    lv.name IS NOT DISTINCT FROM $2 AND
    lv.zone IS NOT DISTINCT FROM $3 AND
    lv.habitat IS NOT DISTINCT FROM $4 AND
    lv.priority IS NOT DISTINCT FROM $5 AND
    lv.usetype IS NOT DISTINCT FROM $6 AND
    lv.active IS NOT DISTINCT FROM $7 AND
    lv.description IS NOT DISTINCT FROM $8 AND
    lv.accessdesc IS NOT DISTINCT FROM $9 AND
    lv.comments IS NOT DISTINCT FROM $10 AND
    lv.externalid IS NOT DISTINCT FROM $11 AND
    lv.nextactiondatescheduled IS NOT DISTINCT FROM $12 AND
    lv.zone2 IS NOT DISTINCT FROM $13 AND
    lv.locationnumber IS NOT DISTINCT FROM $14 AND
    lv.globalid IS NOT DISTINCT FROM $15 AND
    lv.created_user IS NOT DISTINCT FROM $16 AND
    lv.created_date IS NOT DISTINCT FROM $17 AND
    lv.last_edited_user IS NOT DISTINCT FROM $18 AND
    lv.last_edited_date IS NOT DISTINCT FROM $19 AND
    lv.gatewaysync IS NOT DISTINCT FROM $20 AND
    lv.creationdate IS NOT DISTINCT FROM $21 AND
    lv.creator IS NOT DISTINCT FROM $22 AND
    lv.editdate IS NOT DISTINCT FROM $23 AND
    lv.editor IS NOT DISTINCT FROM $24
  )
RETURNING *;

-- Example usage: EXECUTE insert_samplelocation_versioned(id, value1, value2, ...);

-- Parameters in order:
-- $1: OBJECTID (bigint)
-- $2: NAME (varchar)
-- $3: ZONE (varchar)
-- $4: HABITAT (fieldseeker.samplelocation_locationhabitattype_enum)
-- $5: PRIORITY (fieldseeker.samplelocation_locationpriority_enum)
-- $6: USETYPE (fieldseeker.samplelocation_samplelocationusetype_enum)
-- $7: ACTIVE (fieldseeker.samplelocation_notinuit_f_enum)
-- $8: DESCRIPTION (varchar)
-- $9: ACCESSDESC (varchar)
-- $10: COMMENTS (varchar)
-- $11: EXTERNALID (varchar)
-- $12: NEXTACTIONDATESCHEDULED (timestamp)
-- $13: ZONE2 (varchar)
-- $14: LOCATIONNUMBER (integer)
-- $15: GlobalID (uuid)
-- $16: created_user (varchar)
-- $17: created_date (timestamp)
-- $18: last_edited_user (varchar)
-- $19: last_edited_date (timestamp)
-- $20: GATEWAYSYNC (smallint)
-- $21: CreationDate (timestamp)
-- $22: Creator (varchar)
-- $23: EditDate (timestamp)
-- $24: Editor (varchar)