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import { Popularity, ProgramItem } from "shared/types/models/programItem";
import { differenceBy } from "shared/utils/remedaExtend";
import {
Result,
makeErrorResult,
makeSuccessResult,
} from "shared/utils/result";
import { removeCancelledDeletedProgramItemsFromUsers } from "server/features/assignment/utils/removeInvalidProgramItemsFromUsers";
import { updateMovedProgramItems } from "server/features/assignment/utils/updateMovedProgramItems";
import {
createEmptyDirectSignupDocumentForProgramItems,
findDirectSignups,
} from "server/features/direct-signup/directSignupRepository";
import {
getPassedOverProgramItems,
removePassedOverLotterySignups,
} from "server/features/program-item/passedOverProgramItems";
import {
ProgramItemModel,
ProgramItemSchemaDb,
} from "server/features/program-item/programItemSchema";
import { handleCancelledDeletedProgramItems } from "server/features/program-item/programItemUtils";
import { logger } from "server/utils/logger";
export const removeProgramItems = async (
programItemIds?: string[],
): Promise<Result<void, MongoDbError>> => {
logger.info(
`MongoDB: remove program items from db: ${programItemIds ? programItemIds.join(", ") : "ALL"}`,
);
try {
await ProgramItemModel.deleteMany(
programItemIds ? { programItemId: { $in: programItemIds } } : {},
);
return makeSuccessResult();
} catch (error) {
logger.error(
new Error("MongoDB: Error removing program items", { cause: error }),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const saveProgramItems = async (
updatedProgramItems: readonly ProgramItem[],
): Promise<Result<void, MongoDbError>> => {
logger.info("MongoDB: Store program items to DB");
const currentProgramItemsResult = await findProgramItems();
Iif (!currentProgramItemsResult.ok) {
return currentProgramItemsResult;
}
const currentProgramItems = currentProgramItemsResult.value;
// If program item was cancelled or deleted, remove program item and direct sign-ups
const deletedProgramItemsResult = await handleCancelledDeletedProgramItems(
updatedProgramItems,
currentProgramItems,
);
Iif (!deletedProgramItemsResult.ok) {
return deletedProgramItemsResult;
}
// If program item was cancelled or deleted, remove lottery sign-ups and favorite program items
const removeCancelledDeletedProgramItemsFromUsersResult =
await removeCancelledDeletedProgramItemsFromUsers({
programItems: updatedProgramItems,
currentProgramItems,
notifyAffectedDirectSignups: deletedProgramItemsResult.value,
notify: true,
});
Iif (!removeCancelledDeletedProgramItemsFromUsersResult.ok) {
return removeCancelledDeletedProgramItemsFromUsersResult;
}
const updateMovedProgramItemsResult = await updateMovedProgramItems(
updatedProgramItems,
currentProgramItems,
);
Iif (!updateMovedProgramItemsResult.ok) {
return updateMovedProgramItemsResult;
}
// Read before the write, so the marks below go in with the change that makes them true and the
// program item is never stored as a lottery item without one. Direct sign-ups are settled by
// now: the cancelled and deleted handling above is what last touched them.
const directSignupsResult = await findDirectSignups();
Iif (!directSignupsResult.ok) {
return directSignupsResult;
}
const directSignups = directSignupsResult.value;
const passedOverProgramItemsResult = await getPassedOverProgramItems(
updatedProgramItems,
currentProgramItems,
directSignups,
);
Iif (!passedOverProgramItemsResult.ok) {
return passedOverProgramItemsResult;
}
const passedOverProgramItems = passedOverProgramItemsResult.value;
const passedOverProgramItemIds = new Set(
passedOverProgramItems.map((programItem) => programItem.programItemId),
);
// Normally there is nothing to remove: a program item is passed over for holding direct
// sign-ups, and having those means its lottery is over, so any sign-up for it is a past one
// this leaves alone. Defence in depth for the orders that arrive out of the ordinary.
//
// Done before the decision is stored, so a failure here leaves the program item undecided and
// the next import tries again. Recording it first and failing after would strand the sign-ups
// for good: the item would be filtered out as already decided every time from then on.
const removeLotterySignupsResult = await removePassedOverLotterySignups(
passedOverProgramItems,
);
Iif (!removeLotterySignupsResult.ok) {
return removeLotterySignupsResult;
}
const bulkOps = updatedProgramItems.map((programItem) => {
const newProgramItem: Omit<
ProgramItem,
"popularity" | "lotteryRanForStartTime" | "passedOverForLottery"
> = {
programItemId: programItem.programItemId,
parentId: programItem.parentId,
title: programItem.title,
description: programItem.description,
location: programItem.location,
startTime: programItem.startTime,
mins: programItem.mins,
tags: programItem.tags,
ageGroups: programItem.ageGroups,
genres: programItem.genres,
styles: programItem.styles,
languages: programItem.languages,
endTime: programItem.endTime,
people: programItem.people,
minAttendance: programItem.minAttendance,
maxAttendance: programItem.maxAttendance,
gameSystem: programItem.gameSystem,
shortDescription: programItem.shortDescription,
revolvingDoor: programItem.revolvingDoor,
programType: programItem.programType,
contentWarnings: programItem.contentWarnings,
otherAuthor: programItem.otherAuthor,
accessibilityValues: programItem.accessibilityValues,
otherAccessibilityInformation: programItem.otherAccessibilityInformation,
entryFee: programItem.entryFee,
signupType: programItem.signupType,
state: programItem.state,
};
// Otherwise the import's to leave alone, so it is set here only for a program item this
// save is what turns into a passed over one
const passedOverForLottery = passedOverProgramItemIds.has(
programItem.programItemId,
)
? { passedOverForLottery: true }
: {};
return {
updateOne: {
filter: {
programItemId: programItem.programItemId,
},
update: {
...newProgramItem,
...passedOverForLottery,
},
upsert: true,
},
};
});
try {
await ProgramItemModel.bulkWrite(bulkOps);
logger.debug("MongoDB: Program items saved to DB successfully");
} catch (error) {
logger.error(
new Error("Error saving program items to DB", { cause: error }),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
const newProgramItems = differenceBy(
updatedProgramItems,
currentProgramItems,
(programItem) => programItem.programItemId,
);
logger.info(`MongoDB: Found ${newProgramItems.length} new program items`);
// Create sign-up document for all program items missing sign-up document
const programItemIdsWithSignupDoc = new Set(
directSignups.map((directSignup) => directSignup.programItemId),
);
const directSignupDocMissingProgramItemIds = updatedProgramItems
.filter(
(updatedProgramItem) =>
!programItemIdsWithSignupDoc.has(updatedProgramItem.programItemId),
)
.map((updatedProgramItem) => updatedProgramItem.programItemId);
if (directSignupDocMissingProgramItemIds.length > 0) {
const createEmptySignupResult =
await createEmptyDirectSignupDocumentForProgramItems(
directSignupDocMissingProgramItemIds,
);
Iif (!createEmptySignupResult.ok) {
return createEmptySignupResult;
}
}
return makeSuccessResult();
};
export const findProgramItems = async (): Promise<
Result<ProgramItem[], MongoDbError>
> => {
try {
const response = await ProgramItemModel.find({}).lean();
logger.debug("MongoDB: Find all program items");
const programItems = response.flatMap((programItem) => {
const result = ProgramItemSchemaDb.safeParse(programItem);
Iif (!result.success) {
logger.error(
new Error(
`Error validating findProgramItems DB value: programItemId: ${programItem.programItemId}`,
{ cause: result.error },
),
);
return [];
}
return result.data;
});
return makeSuccessResult(programItems);
} catch (error) {
logger.error(
new Error("MongoDB: Error fetching program items", { cause: error }),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const findProgramItemById = async (
programItemId: string,
): Promise<Result<ProgramItem, MongoDbError>> => {
logger.debug(`MongoDB: Find program item with id ${programItemId}`);
try {
const response = await ProgramItemModel.findOne({
programItemId,
}).lean();
if (!response) {
return makeErrorResult(MongoDbError.PROGRAM_ITEM_NOT_FOUND);
}
const result = ProgramItemSchemaDb.safeParse(response);
Iif (!result.success) {
logger.error(
new Error(`Error validating findProgramItemById DB value`, {
cause: result.error,
}),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
return makeSuccessResult(result.data);
} catch (error) {
logger.error(
new Error("MongoDB: Error fetching programItemId", { cause: error }),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
interface PopularityUpdate {
programItemId: string;
popularity: Popularity;
}
// Recorded rather than worked out later: whether a lottery will take a program item must not
// change as the clock moves past its sign-up window
export const savePassedOverForLottery = async (
programItemIds: readonly string[],
): Promise<Result<void, MongoDbError>> => {
if (programItemIds.length === 0) {
return makeSuccessResult();
}
try {
await ProgramItemModel.updateMany(
{ programItemId: { $in: programItemIds } },
{ passedOverForLottery: true },
);
logger.info(
`MongoDB: Recorded ${programItemIds.length} program items as passed over for the lottery`,
);
return makeSuccessResult();
} catch (error) {
logger.error(
new Error("MongoDB: Error recording program items as passed over", {
cause: error,
}),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
// The start time each program item was sitting at when its lottery ran. A time rather than a
// flag, so one moved onto another slot afterwards can be told from one still where it was
// lotteried - and each item's own start time rather than the run's, because a batch's parent
// time is the same before and after a move and so could never tell the two apart.
export const saveLotteryRanForStartTime = async (
programItems: readonly ProgramItem[],
): Promise<Result<void, MongoDbError>> => {
if (programItems.length === 0) {
return makeSuccessResult();
}
try {
await ProgramItemModel.bulkWrite(
programItems.map((programItem) => ({
updateOne: {
filter: { programItemId: programItem.programItemId },
update: {
lotteryRanForStartTime: new Date(programItem.startTime),
},
},
})),
);
logger.info(
`MongoDB: Marked ${programItems.length} program items as lotteried`,
);
return makeSuccessResult();
} catch (error) {
logger.error(
new Error("MongoDB: Error marking program items as lotteried", {
cause: error,
}),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
// Undoes both lottery marks across the collection. Only the data generators need this: they
// simulate a lottery and must be able to re-simulate it without dropping the program items.
export const removeLotteryMarks = async (): Promise<
Result<void, MongoDbError>
> => {
try {
await ProgramItemModel.updateMany(
{},
{ $unset: { lotteryRanForStartTime: "", passedOverForLottery: "" } },
);
logger.info("MongoDB: Lottery marks removed from program items");
return makeSuccessResult();
} catch (error) {
logger.error(
new Error("MongoDB: Error removing lottery marks", { cause: error }),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const saveProgramItemPopularity = async (
popularityUpdates: PopularityUpdate[],
): Promise<Result<void, MongoDbError>> => {
const bulkOps = popularityUpdates.map((popularityUpdate) => {
return {
updateOne: {
filter: {
programItemId: popularityUpdate.programItemId,
},
update: {
popularity: popularityUpdate.popularity,
},
},
};
});
try {
await ProgramItemModel.bulkWrite(bulkOps);
logger.info(
`MongoDB: Updated popularity for ${popularityUpdates.length} program items`,
);
return makeSuccessResult();
} catch (error) {
logger.error(
new Error("Error updating program item popularity", { cause: error }),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
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