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Code Issues 8 Pull Requests Actions Releases 46 Activity

Billing: Calculate prices

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This commit is contained in:
Lorenz Stechauner
2023-11-30 01:44:48 +01:00
parent 17d00a8524
commit 8b9d62ea50
7 changed files with 61 additions and 23 deletions
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44
Elwig/Helpers/Billing/BillingVariant.cs
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@ -1,7 +1,5 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Elwig.Helpers.Billing {
@ -15,6 +13,10 @@ namespace Elwig.Helpers.Billing {
protected async Task DeleteInDb() {
using var cnx = await AppDbContext.ConnectAsync();
using (var cmd = cnx.CreateCommand()) {
cmd.CommandText = $"DELETE FROM payment_delivery_part_bucket WHERE (year, avnr) = ({Year}, {AvNr})";
await cmd.ExecuteNonQueryAsync();
}
using (var cmd = cnx.CreateCommand()) {
cmd.CommandText = $"DELETE FROM payment_delivery_part WHERE (year, avnr) = ({Year}, {AvNr})";
await cmd.ExecuteNonQueryAsync();
@ -27,15 +29,41 @@ namespace Elwig.Helpers.Billing {
public async Task CalculatePrices() {
await DeleteInDb();
var tasks = new List<Task>();
foreach (var mgnr in Context.Members.Select(m => m.MgNr)) {
tasks.Add(Task.Run(() => CalculateMemberPrices(mgnr)));
using var cnx = await AppDbContext.ConnectAsync();
var parts = new List<(int Year, int DId, int DPNr, int BktNr, string SortId, string Discr, int Value, bool MinQuw, double Oe, double Kmw)>();
using (var cmd = cnx.CreateCommand()) {
cmd.CommandText = $"""
SELECT d.year, d.did, d.dpnr, b.bktnr, d.sortid, b.discr, b.value, d.min_quw, d.oe, d.kmw
FROM delivery_part_bucket b
JOIN v_delivery d ON (d.year, d.did, d.dpnr) = (b.year, b.did, b.dpnr)
WHERE b.year = {Year}
""";
using var reader = await cmd.ExecuteReaderAsync();
while (await reader.ReadAsync()) {
parts.Add((
reader.GetInt32(0), reader.GetInt32(1), reader.GetInt32(2), reader.GetInt32(3),
reader.GetString(4), reader.GetString(5), reader.GetInt32(6),
reader.GetBoolean(7), reader.GetDouble(8), reader.GetDouble(9)
));
}
}
await Task.WhenAll(tasks);
}
protected async Task CalculateMemberPrices(int mgnr) {
var inserts = new List<(int Year, int DId, int DPNr, int BktNr, long Price, long Amount)>();
foreach (var part in parts) {
var price = !part.MinQuw ? 0.5m : ((part.BktNr == 2 ? 0.8m : (part.BktNr == 1 ? 0.7m : 0.6m)) + ((decimal)(part.Oe - 73) * 0.005m)); // TODO
var priceL = Utils.DecToDb(price, 4);
var amount = Utils.DecToDb(price * part.Value, 4);
inserts.Add((part.Year, part.DId, part.DPNr, part.BktNr, priceL, amount));
}
using (var cmd = cnx.CreateCommand()) {
cmd.CommandText = $"""
INSERT INTO payment_delivery_part_bucket (year, did, dpnr, bktnr, avnr, price, amount)
VALUES {string.Join(",\n ", inserts.Select(i => $"({i.Year}, {i.DId}, {i.DPNr}, {i.BktNr}, {AvNr}, {i.Price}, {i.Amount})"))}
""";
await cmd.ExecuteNonQueryAsync();
}
}
}
}