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import { DumpsterContentsAttributes } from "../models/DumpsterContents";
import Content from "../types/Content";
import { NotFoundError, ServerError, UnknownError } from "../types/errors";
const contentAttributes = [
"dumpsterID",
"amount",
"unit",
"quality",
"expiryDate",
"foundDate",
// avoiding DumpsterPositionDumpsterID, the unspeakable horror
];
/**
* Maps the result of a findAll to an actual Content object.
*/
const toContent = ({
amount,
unit,
quality,
expiryDate,
foundDate,
contentType,
}: DumpsterContentsAttributes & {
contentType: { name: string };
}): Content => ({
name: contentType.name,
amount,
unit,
quality,
expiryDate,
foundDate,
});
/**
* Maps the result of a create call to an actual Content object.
*/
const createResultToContent = (
name: string,
{
amount,
unit,
quality,
expiryDate,
foundDate,
}: DumpsterContentsAttributes,
): Content => ({
name,
amount,
unit,
quality,
expiryDate,
foundDate,
});
export default function({
ContentTypes,
DumpsterContents,
StandardContentTypes,
DumpsterPositions,
sequelize,
}: MyModels) {
return {
/**
* Find all standard types of contents,
* to present to users when they wanna add contents.
*
* Returns a little more than just the name, in case we *need* more.
*/
getStandardContentTypes: () =>
StandardContentTypes.findAll({
include: {
model: ContentTypes,
as: "contentType",
},
}).then(data =>
data.map(
// @ts-ignore
({
contentID,
// @ts-ignore
contentType: { categoryID, name },
}: {
contentID: number;
contentType: { categoryID: number; name: string };
}) => ({ contentID, categoryID, name }),
),
),
/**
* Find the registered contents of a dumpster
*
* @param dumpsterID - ID of the queried dumpster
*/
getAll: async (dumpsterID: number) => {
return await sequelize.transaction(async t => {
const dumpsterPosition = await DumpsterPositions.findOne({
where: { dumpsterID },
transaction: t,
});
if (!dumpsterPosition)
throw new NotFoundError("No such dumpster");
return await DumpsterContents.findAll({
where: { dumpsterID },
attributes: contentAttributes,
include: [
{
model: ContentTypes,
as: "contentType",
},
],
limit: 100,
order: [["foundDate", "DESC"]],
transaction: t,
}).then(data =>
// @ts-ignore
data.map(toContent),
);
});
},
addOne: async (
dumpsterID: number,
content: Omit<Content, "foundDate">,
) => {
const { name } = content;
return await sequelize.transaction(async t => {
// First, check if the content type already exists
const match = await ContentTypes.findOne({
where: { name },
transaction: t,
});
let contentID;
if (match) {
// If it does, we have the content type ID
contentID = match.contentID;
} else {
// Otherwise, we'll have to add a new content type
contentID = (await ContentTypes.create(
// TODO either scrap category binding or find a way to set it...
{ categoryID: 1, name },
{ transaction: t },
)).contentID;
}
// Create the content entry
await DumpsterContents.create(
{
dumpsterID,
contentID,
...content,
},
{ transaction: t },
);
// Then fetch the current data to get its date...
// (kinda cursed, I know)
const result = await DumpsterContents.findOne({
attributes: contentAttributes,
where: {
dumpsterID,
contentID,
},
order: [["foundDate", "DESC"]],
transaction: t,
});
Eif (result) return createResultToContent(name, result);
else
throw new UnknownError(
"Content was not created (for unknown reasons)",
);
});
},
updateOne: async (dumpsterID: number, content: Content) => {
const { name, foundDate, ...editableAttributes } = content;
return await sequelize.transaction(async t => {
const match = await ContentTypes.findOne({
where: { name },
transaction: t,
});
Eif (match) {
const { contentID } = match;
const [numberUpdated, _] = await DumpsterContents.update(
editableAttributes,
{
where: {
dumpsterID,
contentID,
foundDate,
},
transaction: t,
},
);
Iif (numberUpdated > 1)
throw new ServerError(
`Updated ${numberUpdated} content entries, but no more than one should be updated`,
);
const result = await DumpsterContents.findOne({
attributes: contentAttributes,
where: { dumpsterID, contentID, foundDate },
transaction: t,
});
Eif (result) return createResultToContent(name, result);
else
throw new NotFoundError(
"Couldn't find a content entry with this data",
);
} else {
throw new NotFoundError("No such content type");
}
});
},
/**
* Removes a content entry
* @param dumpsterID - ID of the dumpster the content was found in
* @param name - content type, for identification
* @param foundDate - date found, for identification
*/
removeOne: async (
dumpsterID: number,
{ name, foundDate }: Pick<Content, "name" | "foundDate">,
) => {
return await sequelize.transaction(async t => {
const match = await ContentTypes.findOne({
where: { name },
transaction: t,
});
Iif (!match) throw new NotFoundError("No such content type");
return await DumpsterContents.destroy({
where: {
dumpsterID,
contentID: match.contentID,
foundDate,
},
});
});
},
};
}
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