using Microsoft.Data.Sqlite;
using System;
namespace Elwig.Helpers {
public static class AppDbUpdater {
public static readonly int RequiredSchemaVersion = 3;
private static int _versionOffset = 0;
private static readonly Action<SqliteConnection>[] _updaters = new[] {
UpdateDbSchema_1_To_2, UpdateDbSchema_2_To_3
};
private static void ExecuteNonQuery(SqliteConnection cnx, string sql) {
using var cmd = cnx.CreateCommand();
cmd.CommandText = sql;
cmd.ExecuteNonQuery();
}
private static object? ExecuteScalar(SqliteConnection cnx, string sql) {
using var cmd = cnx.CreateCommand();
cmd.CommandText = sql;
return cmd.ExecuteScalar();
}
public static string CheckDb() {
using var cnx = AppDbContext.Connect();
var applId = (long?)ExecuteScalar(cnx, "PRAGMA application_id") ?? 0;
if (applId != 0x454C5747) throw new Exception("Invalid application_id of database");
var schemaVers = (long?)ExecuteScalar(cnx, "PRAGMA schema_version") ?? 0;
_versionOffset = (int)(schemaVers % 100);
if (_versionOffset != 0) {
// schema was modified manually/externally
// TODO issue warning
}
UpdateDbSchema(cnx, (int)(schemaVers / 100), RequiredSchemaVersion);
var userVers = (long?)ExecuteScalar(cnx, "PRAGMA user_version") ?? 0;
var major = userVers >> 24;
var minor = (userVers >> 16) & 0xFF;
var patch = userVers & 0xFFFF;
if (App.VersionMajor > major ||
(App.VersionMajor == major && App.VersionMinor > minor) ||
(App.VersionMajor == major && App.VersionMinor == minor && App.VersionPatch > patch))
{
long vers = (App.VersionMajor << 24) | (App.VersionMinor << 16) | App.VersionPatch;
ExecuteNonQuery(cnx, $"PRAGMA user_version = {vers}");
}
return $"{major}.{minor}.{patch}";
}
private static void UpdateDbSchema(SqliteConnection cnx, int fromVersion, int toVersion) {
if (fromVersion == toVersion) {
return;
} else if (fromVersion > toVersion) {
throw new Exception("schema_version of database is too new");
} else if (toVersion - 1 > _updaters.Length) {
throw new Exception("Unable to update database schema: Updater not implemented");
} else if (fromVersion <= 0) {
throw new Exception("schema_version of database is invalid");
}
ExecuteNonQuery(cnx, "PRAGMA locking_mode = EXCLUSIVE");
ExecuteNonQuery(cnx, "BEGIN EXCLUSIVE");
for (int i = fromVersion; i < toVersion; i++) {
_updaters[i - 1](cnx);
}
ExecuteNonQuery(cnx, "COMMIT");
ExecuteNonQuery(cnx, "VACUUM");
ExecuteNonQuery(cnx, $"PRAGMA schema_version = {toVersion * 100 + _versionOffset}");
}
private static void UpdateDbSchema_1_To_2(SqliteConnection cnx) {
ExecuteNonQuery(cnx, "DROP VIEW v_area_commitment");
ExecuteNonQuery(cnx, "ALTER TABLE delivery_part DROP COLUMN weighing_reason");
ExecuteNonQuery(cnx, "ALTER TABLE delivery_part ADD COLUMN weighing_reason TEXT CHECK(NOT (manual_weighing = FALSE AND weighing_reason IS NOT NULL))");
}
private static void UpdateDbSchema_2_To_3(SqliteConnection cnx) {
ExecuteNonQuery(cnx, "ALTER TABLE season ADD COLUMN bin_1_name TEXT DEFAULT NULL");
ExecuteNonQuery(cnx, "ALTER TABLE season ADD COLUMN bin_2_name TEXT DEFAULT NULL");
ExecuteNonQuery(cnx, "ALTER TABLE season ADD COLUMN bin_3_name TEXT DEFAULT NULL");
ExecuteNonQuery(cnx, "ALTER TABLE season ADD COLUMN bin_4_name TEXT DEFAULT NULL");
ExecuteNonQuery(cnx, "ALTER TABLE season ADD COLUMN bin_5_name TEXT DEFAULT NULL");
ExecuteNonQuery(cnx, "ALTER TABLE season ADD COLUMN bin_6_name TEXT DEFAULT NULL");
ExecuteNonQuery(cnx, "ALTER TABLE season ADD COLUMN bin_7_name TEXT DEFAULT NULL");
ExecuteNonQuery(cnx, "ALTER TABLE season ADD COLUMN bin_8_name TEXT DEFAULT NULL");
ExecuteNonQuery(cnx, "ALTER TABLE season ADD COLUMN bin_9_name TEXT DEFAULT NULL");
ExecuteNonQuery(cnx, """
UPDATE season
SET bin_1_name = n.bucket_1_name,
bin_2_name = n.bucket_2_name,
bin_3_name = n.bucket_3_name,
bin_4_name = n.bucket_4_name,
bin_5_name = n.bucket_5_name,
bin_6_name = n.bucket_6_name,
bin_7_name = n.bucket_7_name,
bin_8_name = n.bucket_8_name,
bin_9_name = n.bucket_9_name
FROM (SELECT year, bucket_1_name, bucket_2_name, bucket_3_name, bucket_4_name, bucket_5_name, bucket_6_name, bucket_7_name, bucket_8_name, bucket_9_name
FROM payment_variant GROUP BY year HAVING avnr = MAX(avnr)) AS n
WHERE season.year = n.year
""");
ExecuteNonQuery(cnx, """
CREATE TABLE delivery_part_bin (
year INTEGER NOT NULL,
did INTEGER NOT NULL,
dpnr INTEGER NOT NULL,
bin_1 INTEGER DEFAULT NULL,
bin_2 INTEGER DEFAULT NULL,
bin_3 INTEGER DEFAULT NULL,
bin_4 INTEGER DEFAULT NULL,
bin_5 INTEGER DEFAULT NULL,
bin_6 INTEGER DEFAULT NULL,
bin_7 INTEGER DEFAULT NULL,
bin_8 INTEGER DEFAULT NULL,
bin_9 INTEGER DEFAULT NULL,
CONSTRAINT pk_delivery_part_bin PRIMARY KEY (year, did, dpnr),
CONSTRAINT fk_delivery_part_bin_delivery_part FOREIGN KEY (year, did, dpnr) REFERENCES delivery_part (year, did, dpnr)
ON UPDATE CASCADE
ON DELETE CASCADE
) STRICT;
""");
ExecuteNonQuery(cnx, """
INSERT INTO delivery_part_bin
(year, did, dpnr, bin_1, bin_2, bin_3, bin_4, bin_5, bin_6, bin_7, bin_8, bin_9)
SELECT year, did, dpnr, bucket_1, bucket_2, bucket_3, bucket_4, bucket_5, bucket_6, bucket_7, bucket_8, bucket_9
FROM payment_delivery_part
WHERE COALESCE(bucket_1, bucket_2, bucket_3, bucket_4, bucket_5, bucket_6, bucket_7, bucket_8, bucket_9) IS NOT NULL
ON CONFLICT DO NOTHING;
""");
ExecuteNonQuery(cnx, "ALTER TABLE payment_delivery_part DROP COLUMN bucket_1");
ExecuteNonQuery(cnx, "ALTER TABLE payment_delivery_part DROP COLUMN bucket_2");
ExecuteNonQuery(cnx, "ALTER TABLE payment_delivery_part DROP COLUMN bucket_3");
ExecuteNonQuery(cnx, "ALTER TABLE payment_delivery_part DROP COLUMN bucket_4");
ExecuteNonQuery(cnx, "ALTER TABLE payment_delivery_part DROP COLUMN bucket_5");
ExecuteNonQuery(cnx, "ALTER TABLE payment_delivery_part DROP COLUMN bucket_6");
ExecuteNonQuery(cnx, "ALTER TABLE payment_delivery_part DROP COLUMN bucket_7");
ExecuteNonQuery(cnx, "ALTER TABLE payment_delivery_part DROP COLUMN bucket_8");
ExecuteNonQuery(cnx, "ALTER TABLE payment_delivery_part DROP COLUMN bucket_9");
ExecuteNonQuery(cnx, "ALTER TABLE payment_variant DROP COLUMN bucket_1_name");
ExecuteNonQuery(cnx, "ALTER TABLE payment_variant DROP COLUMN bucket_2_name");
ExecuteNonQuery(cnx, "ALTER TABLE payment_variant DROP COLUMN bucket_3_name");
ExecuteNonQuery(cnx, "ALTER TABLE payment_variant DROP COLUMN bucket_4_name");
ExecuteNonQuery(cnx, "ALTER TABLE payment_variant DROP COLUMN bucket_5_name");
ExecuteNonQuery(cnx, "ALTER TABLE payment_variant DROP COLUMN bucket_6_name");
ExecuteNonQuery(cnx, "ALTER TABLE payment_variant DROP COLUMN bucket_7_name");
ExecuteNonQuery(cnx, "ALTER TABLE payment_variant DROP COLUMN bucket_8_name");
ExecuteNonQuery(cnx, "ALTER TABLE payment_variant DROP COLUMN bucket_9_name");
ExecuteNonQuery(cnx, "DROP VIEW v_delivery");
ExecuteNonQuery(cnx, """
CREATE VIEW v_delivery AS
SELECT p.year, p.did, p.dpnr,
d.date, d.time, d.zwstid, d.lnr, d.lsnr,
m.mgnr, m.family_name, m.given_name,
p.sortid, p.weight, p.kmw, ROUND(p.kmw * (4.54 + 0.022 * p.kmw), 0) AS oe, p.qualid, p.hkid, p.kgnr, p.rdnr,
p.qualid IN (SELECT l.qualid FROM wine_quality_level l WHERE NOT l.predicate AND (p.kmw >= l.min_kmw OR l.min_kmw IS NULL) ORDER BY l.min_kmw DESC LIMIT 1,100) AS abgewertet,
p.qualid NOT IN ('WEI', 'RSW', 'LDW') AS min_quw,
GROUP_CONCAT(DISTINCT a.attrid) as attributes, GROUP_CONCAT(DISTINCT o.modid) as modifiers,
d.comment, p.comment as part_comment
FROM delivery_part p
JOIN delivery d ON (d.year, d.did) = (p.year, p.did)
JOIN member m ON m.mgnr = d.mgnr
LEFT JOIN delivery_part_attribute a ON (a.year, a.did, a.dpnr) = (p.year, p.did, p.dpnr)
LEFT JOIN delivery_part_modifier o ON (o.year, o.did, o.dpnr) = (p.year, p.did, p.dpnr)
GROUP BY p.year, p.did, p.dpnr
ORDER BY p.year, p.did, p.dpnr;
""");
ExecuteNonQuery(cnx, "DROP VIEW v_bucket");
ExecuteNonQuery(cnx, """
CREATE VIEW v_delivery_bin AS
SELECT year, mgnr,
sortid || IIF(min_quw, REPLACE(COALESCE(attributes, ''), ',', ''), '_') AS bin,
SUM(weight) AS weight
FROM v_delivery
GROUP BY year, mgnr, bin
ORDER BY year, mgnr, LENGTH(bin) DESC, bin;
""");
ExecuteNonQuery(cnx, "ALTER TABLE wine_attribute ADD COLUMN fill_lower_bins INTEGER NOT NULL CHECK (fill_lower_bins IN (TRUE, FALSE)) DEFAULT FALSE");
}
}
}