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import { jsonArrayFrom } from "kysely/helpers/postgres";
import { z } from "zod";
import type { DebtId, PeerId, ReceiptId, UserId } from "~db/ids";
import { queueCallFactory } from "~web/handlers/batch";
import type { AuthorizedContext } from "~web/handlers/context";
import { authProcedure } from "~web/handlers/trpc";
import { receiptIdSchema } from "~web/handlers/validation";
const fetchReceipts = async (
{ database, auth }: AuthorizedContext,
ids: ReceiptId[],
) =>
database
.selectFrom("receipts")
.where("receipts.id", "in", ids)
.innerJoin("peers as meFromReceiptOwnerView", (jb) =>
jb
.on("meFromReceiptOwnerView.connectedUserId", "=", auth.userId)
.onRef(
"meFromReceiptOwnerView.ownerUserId",
"=",
"receipts.ownerUserId",
),
)
.innerJoin("peers as receiptOwnerFromMyView", (jb) =>
jb
.onRef(
"receiptOwnerFromMyView.ownerUserId",
"=",
"meFromReceiptOwnerView.connectedUserId",
)
.onRef(
"receiptOwnerFromMyView.connectedUserId",
"=",
"receipts.ownerUserId",
),
)
.select((eb) => [
"receipts.id",
"receipts.createdAt",
"receipts.name",
"receipts.currencyCode",
"receipts.ownerUserId",
"receipts.issued",
"receiptOwnerFromMyView.id as ownerPeerId",
"meFromReceiptOwnerView.id as selfPeerId",
jsonArrayFrom(
eb
.selectFrom("receiptItems")
.select((ebb) => [
"receiptItems.id",
"receiptItems.name",
"receiptItems.price",
"receiptItems.quantity",
"receiptItems.createdAt",
jsonArrayFrom(
ebb
.selectFrom("receiptItemConsumers")
.select([
"receiptItemConsumers.part",
"receiptItemConsumers.peerId",
"receiptItemConsumers.createdAt",
])
.whereRef("receiptItemConsumers.itemId", "=", "receiptItems.id")
.orderBy("receiptItemConsumers.createdAt", "desc")
.orderBy("receiptItemConsumers.peerId"),
).as("consumers"),
jsonArrayFrom(
ebb
.selectFrom("receiptItemPayers")
.select([
"receiptItemPayers.part",
"receiptItemPayers.peerId",
"receiptItemPayers.createdAt",
])
.whereRef("receiptItemPayers.itemId", "=", "receiptItems.id")
.orderBy("receiptItemPayers.createdAt", "desc")
.orderBy("receiptItemPayers.peerId"),
).as("payers"),
])
.whereRef("receiptItems.receiptId", "=", "receipts.id")
.orderBy("receiptItems.createdAt", "desc")
.orderBy("receiptItems.id"),
).as("items"),
jsonArrayFrom(
eb
.selectFrom("receiptParticipants")
.whereRef("receiptParticipants.receiptId", "=", "receipts.id")
.innerJoin("peers as peersTheir", (jb) =>
jb.onRef("peersTheir.id", "=", "receiptParticipants.peerId"),
)
.leftJoin("peers as peersMine", (jb) =>
jb
.onRef(
"peersMine.connectedUserId",
"=",
"peersTheir.connectedUserId",
)
.on("peersMine.ownerUserId", "=", auth.userId),
)
.select([
"receiptParticipants.peerId",
"receiptParticipants.createdAt",
"receiptParticipants.role",
])
.orderBy("receiptParticipants.createdAt", "desc")
.orderBy("receiptParticipants.peerId"),
).as("participants"),
])
.execute();
const fetchDebts = async (
{ database }: AuthorizedContext,
receiptIds: ReceiptId[],
) =>
database
.selectFrom("debts")
.innerJoin("peers", (qb) => qb.onRef("peers.id", "=", "debts.peerId"))
.where("debts.receiptId", "in", receiptIds)
.select([
"debts.id as debtId",
"debts.receiptId",
"debts.ownerUserId",
"peers.id as peerId",
])
.execute();
const getReceiptDebts = (
debts: Awaited<ReturnType<typeof fetchDebts>>,
receiptOwnerUserId: UserId,
selfUserId: UserId,
receiptSelfPeerId: PeerId,
):
| ({
direction: "incoming";
} & (
| { id: DebtId; hasMine: true; hasForeign: boolean }
| { id: DebtId; hasMine: false; hasForeign: true }
| { id: undefined; hasMine: false; hasForeign: false }
))
| {
direction: "outcoming";
debts: { id: DebtId; peerId: PeerId }[];
} => {
if (receiptOwnerUserId === selfUserId) {
const outcomingDebt = debts
.filter((debt) => debt.ownerUserId === selfUserId)
.toSorted((a, b) => a.debtId.localeCompare(b.debtId))
.map((debt) => ({ id: debt.debtId, peerId: debt.peerId }));
return {
direction: "outcoming",
debts: outcomingDebt,
};
}
const mineDebtId = debts.find(
(debt) => debt.ownerUserId === selfUserId,
)?.debtId;
const foreignDebtId = debts.find(
(debt) =>
debt.ownerUserId !== selfUserId && debt.peerId === receiptSelfPeerId,
)?.debtId;
if (mineDebtId) {
return {
direction: "incoming",
id: mineDebtId,
hasMine: true,
hasForeign: Boolean(foreignDebtId),
};
}
if (foreignDebtId) {
return {
direction: "incoming",
id: foreignDebtId,
hasMine: false,
hasForeign: true,
};
}
return {
direction: "incoming",
id: undefined,
hasMine: false,
hasForeign: false,
};
};
const mapReceipt = (
auth: AuthorizedContext["auth"],
receipt: Awaited<ReturnType<typeof fetchReceipts>>[number],
debts: Awaited<ReturnType<typeof fetchDebts>>,
) => {
const { ownerUserId, items, participants, ...receiptRest } = receipt;
const payersItem = items.find((item) => item.id === receipt.id);
const regularItems = items.filter((item) => item !== payersItem);
return {
...receiptRest,
items: regularItems.map((item) => ({
...item,
price: Number(item.price),
quantity: Number(item.quantity),
payers: item.payers.map(({ part, ...consumer }) => ({
...consumer,
part: Number(part),
})),
consumers: item.consumers.map(({ part, ...consumer }) => ({
...consumer,
part: Number(part),
})),
})),
participants,
debts: getReceiptDebts(debts, ownerUserId, auth.userId, receipt.selfPeerId),
// This can't happen as payers item always exists
payers:
/* c8 ignore next */
payersItem?.consumers.map((payer) => ({
...payer,
part: Number(payer.part),
})) ?? [],
};
};
type Receipt = ReturnType<typeof mapReceipt>;
const queueReceipt = queueCallFactory<
AuthorizedContext,
{ id: ReceiptId },
Receipt
>((ctx) => async (inputs) => {
const receiptIds = inputs.map(({ id }) => id);
const [receipts, debts] = await Promise.all([
fetchReceipts(ctx, receiptIds),
fetchDebts(ctx, receiptIds),
]);
return inputs.map((input) => {
const receipt = receipts.find(({ id }) => id === input.id);
if (!receipt) {
return new TRPCError({
code: "NOT_FOUND",
message: `Receipt "${input.id}" is not found.`,
});
}
if (
receipt.ownerPeerId !== ctx.auth.userId &&
!receipt.participants.some(
(participant) => participant.peerId === receipt.selfPeerId,
)
) {
return new TRPCError({
code: "FORBIDDEN",
message: `User "${ctx.auth.email}" has no access to receipt "${receipt.id}"`,
});
}
try {
const mapped = mapReceipt(
ctx.auth,
receipt,
debts.filter((debt) => debt.receiptId === receipt.id),
);
return mapped;
/* c8 ignore start */
} catch (error) {
return error as Error;
}
/* c8 ignore stop */
});
});
export const procedure = authProcedure
.meta({
title: "Get receipt",
description:
"Returns a receipt by id with its items, participants, payers and linked debts, if the user owns or participates in it.",
})
.input(
z.strictObject({
id: receiptIdSchema,
}),
)
.query(queueReceipt);
|