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-- +migrate Up
-- need to coerce to bigint (instead of default of double precision) to get the correct shift_number.
-- need to compare time intervals in the correct time zone
CREATE OR REPLACE VIEW on_call AS
WITH rotation_details AS (
SELECT
rotations.id,
rotations.schedule_id,
rotations.start_time,
(((rotations.shift_length)::text ||
CASE
WHEN (rotations.type = 'hourly') THEN ' hours'
WHEN (rotations.type = 'daily') THEN ' days'
ELSE ' weeks'
END))::interval AS shift,
((
CASE
WHEN (rotations.type = 'hourly') THEN (date_part('epoch', ((now() at time zone s.time_zone) - (rotations.start_time at time zone s.time_zone)))::bigint / 3600) -- number of hours
WHEN (rotations.type = 'daily') THEN date_part('days', ((now() at time zone s.time_zone) - (rotations.start_time at time zone s.time_zone)))::bigint -- number of days
ELSE (date_part('days'::text, ((now() at time zone s.time_zone) - (rotations.start_time at time zone s.time_zone)))::bigint / 7) -- number of weeks
END / rotations.shift_length)) AS shift_number
FROM
rotations,
schedules s
WHERE s.id = rotations.schedule_id
),
p_count AS (
SELECT
rp.rotation_id,
count(rp.id) AS count
FROM
rotation_participants rp,
rotation_details d_1
WHERE (rp.rotation_id = d_1.id)
GROUP BY rp.rotation_id
),
current_participant AS (
SELECT
rp.user_id,
p.rotation_id
FROM
rotation_participants rp,
rotation_details d_1,
p_count p
WHERE ((rp.rotation_id = d_1.id)
AND (p.rotation_id = rp.rotation_id)
AND (rp."position" = (d_1.shift_number % p.count)))
),
next_participant AS (
SELECT
rp.user_id,
p.rotation_id
FROM
rotation_participants rp,
rotation_details d_1,
p_count p
WHERE ((rp.rotation_id = d_1.id)
AND (p.rotation_id = rp.rotation_id)
AND (rp."position" = ((d_1.shift_number + 1) % p.count)))
)
SELECT
d.schedule_id,
d.id AS rotation_id,
c.user_id,
n.user_id AS next_user_id,
((d.shift * (d.shift_number)::bigint) + d.start_time) AS start_time,
((d.shift * ((d.shift_number + 1))::bigint) + d.start_time) AS end_time,
d.shift_number
FROM
rotation_details d,
current_participant c,
next_participant n
WHERE ((d.id = c.rotation_id)
AND (c.rotation_id = n.rotation_id));
-- +migrate Down
CREATE OR REPLACE VIEW on_call AS
WITH rotation_details AS (
SELECT
rotations.id,
rotations.schedule_id,
rotations.start_time,
(((rotations.shift_length)::text ||
CASE
WHEN (rotations.type = 'hourly'::enum_rotation_type) THEN ' hours'::text
WHEN (rotations.type = 'daily'::enum_rotation_type) THEN ' days'::text
ELSE ' weeks'::text
END))::interval AS shift,
((
CASE
WHEN (rotations.type = 'hourly'::enum_rotation_type) THEN (date_part('epoch'::text, (now() - rotations.start_time)) / (3600)::double precision)
WHEN (rotations.type = 'daily'::enum_rotation_type) THEN date_part('days'::text, (now() - rotations.start_time))
ELSE (date_part('days'::text, (now() - rotations.start_time)) / (7)::double precision)
END / (rotations.shift_length)::double precision))::bigint AS shift_number
FROM rotations
),
p_count AS (
SELECT
rp.rotation_id,
count(rp.id) AS count
FROM
rotation_participants rp,
rotation_details d_1
WHERE (rp.rotation_id = d_1.id)
GROUP BY rp.rotation_id
),
current_participant AS (
SELECT
rp.user_id,
p.rotation_id
FROM
rotation_participants rp,
rotation_details d_1,
p_count p
WHERE ((rp.rotation_id = d_1.id)
AND (p.rotation_id = rp.rotation_id)
AND (rp."position" = (d_1.shift_number % p.count)))
),
next_participant AS (
SELECT
rp.user_id,
p.rotation_id
FROM
rotation_participants rp,
rotation_details d_1,
p_count p
WHERE ((rp.rotation_id = d_1.id)
AND (p.rotation_id = rp.rotation_id)
AND (rp."position" = ((d_1.shift_number + 1) % p.count)))
)
SELECT
d.schedule_id,
d.id AS rotation_id,
c.user_id,
n.user_id AS next_user_id,
((d.shift * (d.shift_number)::double precision) + d.start_time) AS start_time,
((d.shift * ((d.shift_number + 1))::double precision) + d.start_time) AS end_time,
d.shift_number
FROM
rotation_details d,
current_participant c,
next_participant n
WHERE ((d.id = c.rotation_id)
AND (c.rotation_id = n.rotation_id));
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