-- schema version 6 to 7

DROP VIEW v_area_commitment_bucket_strict;
CREATE VIEW v_area_commitment_bucket_strict AS
SELECT s.year, c.mgnr,
       t.sortid || COALESCE(a.attrid, '') AS bucket,
       t.sortid, a.attrid,
       SUM(area) AS area,
       CAST(ROUND(SUM(area) * COALESCE(t.min_kg_per_ha, 0) / 10000.0, 0) AS INTEGER) AS min_kg,
       CAST(ROUND(SUM(area) * MIN(COALESCE(a.max_kg_per_ha, s.max_kg_per_ha), s.max_kg_per_ha) / 10000.0, 0) AS INTEGER) AS max_kg,
       CAST(ROUND(SUM(area) * s.max_kg_per_ha / 10000.0, 0) AS INTEGER) AS upper_max_kg
FROM season s, area_commitment c
    JOIN area_commitment_type t ON t.vtrgid = c.vtrgid
    LEFT JOIN wine_attribute a ON a.attrid = t.attrid
WHERE (year_from IS NULL OR year_from <= s.year) AND
      (year_to IS NULL OR year_to >= s.year)
GROUP BY s.year, c.mgnr, bucket
ORDER BY s.year, c.mgnr, bucket;

CREATE VIEW v_under_delivery_bucket_strict AS
SELECT c.year, c.mgnr, c.bucket, c.min_kg, COALESCE(p.weight, 0) AS weight
FROM v_area_commitment_bucket_strict c
    LEFT JOIN v_payment_bucket_strict p ON (p.year, p.mgnr, p.bucket) = (c.year, c.mgnr, c.bucket)
ORDER BY c.year, c.mgnr, c.bucket;

CREATE VIEW v_under_delivery_bucket AS
SELECT u.year, u.mgnr, u.bucket, u.min_kg,
       u.weight + SUM(MAX(COALESCE(p.weight - s.min_kg, 0), 0)) AS weight
FROM v_under_delivery_bucket_strict u
    LEFT JOIN v_payment_bucket_strict p ON (p.year, p.mgnr, p.sortid) = (u.year, u.mgnr, u.bucket) AND p.attrid IS NOT NULL
    LEFT JOIN wine_attribute a ON a.attrid = p.attrid
    LEFT JOIN v_area_commitment_bucket_strict s ON (s.year, s.mgnr, s.bucket) = (p.year, p.mgnr, p.bucket)
WHERE (p.gebunden IS NULL OR p.gebunden) AND (a.strict IS NULL OR a.strict = FALSE)
GROUP BY u.year, u.mgnr, u.bucket
ORDER BY u.year, u.mgnr, u.bucket;

CREATE VIEW v_under_delivery AS
SELECT year, mgnr, bucket, min_kg, weight, weight - min_kg AS diff
FROM v_under_delivery_bucket
WHERE diff < 0;