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import { first, groupBy, shuffle } from "remeda";
import { findProgramItemById } from "server/features/program-item/programItemRepository";
import {
DirectSignupsForProgramItem,
SignupRepositoryAddSignupResponse,
SignupRepositoryAddSignup,
UserDirectSignup,
} from "server/features/direct-signup/directSignupTypes";
import {
DirectSignupSchemaDb,
SignupModel,
} from "server/features/direct-signup/directSignupSchema";
import { logger } from "server/utils/logger";
import { MongoDbError } from "shared/types/api/errors";
import {
Result,
makeErrorResult,
makeSuccessResult,
} from "shared/utils/result";
import { isLotterySignupProgramItem } from "shared/utils/isLotterySignupProgramItem";
import { isStartTimeMatch } from "server/utils/isStartTimeMatch";
import { ProgramItem } from "shared/types/models/programItem";
export const removeDirectSignups = async (): Promise<
Result<void, MongoDbError>
> => {
logger.info("MongoDB: remove ALL direct signups from db");
try {
await SignupModel.deleteMany({});
return makeSuccessResult();
} catch (error) {
logger.error(
new Error("MongoDB: Error removing direct signups", { cause: error }),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const findDirectSignups = async (): Promise<
Result<DirectSignupsForProgramItem[], MongoDbError>
> => {
try {
const response = await SignupModel.find({}).lean();
logger.debug("MongoDB: Direct signups found");
const signups = response.flatMap((signup) => {
const result = DirectSignupSchemaDb.safeParse(signup);
Iif (!result.success) {
logger.error(
new Error(
`Error validating findDirectSignups DB value: programItemId: ${signup.programItemId}, ${JSON.stringify(result.error)}`,
),
);
return [];
}
return result.data;
});
return makeSuccessResult(signups);
} catch (error) {
logger.error(
new Error("MongoDB: Error finding direct signups", { cause: error }),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const findDirectSignupsByProgramItemIds = async (
programItemIds: string[],
): Promise<Result<DirectSignupsForProgramItem[], MongoDbError>> => {
try {
const responses = await SignupModel.find({
programItemId: { $in: programItemIds },
}).lean();
Iif (responses.length === 0) {
logger.info(
`MongoDB: No direct signups found for program item IDs: ${programItemIds.join(", ")}`,
);
return makeSuccessResult([]);
}
logger.debug(
`MongoDB: Found ${responses.length} direct signups for program item IDs: ${programItemIds.join(", ")}`,
);
const validSignups: DirectSignupsForProgramItem[] = [];
for (const response of responses) {
const result = DirectSignupSchemaDb.safeParse(response);
Iif (!result.success) {
logger.error(
new Error(
`Error validating findDirectSignupsByProgramItemIds DB value: programItemId ${response.programItemId}: ${JSON.stringify(result.error)}`,
),
);
continue;
}
validSignups.push(result.data);
}
return makeSuccessResult(validSignups);
} catch (error) {
logger.error(
new Error(
`MongoDB: Error finding direct signups for program items ${programItemIds.join(", ")}`,
{ cause: error },
),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
interface FindDirectSignupsByStartTimeResponse extends UserDirectSignup {
programItemId: string;
}
export const findDirectSignupsByStartTime = async (
startTime: string,
programItems: ProgramItem[],
): Promise<Result<FindDirectSignupsByStartTimeResponse[], MongoDbError>> => {
const programItemsIds = programItems
.filter((programItem) =>
isStartTimeMatch(programItem.startTime, startTime, programItem.parentId),
)
.map((programItem) => programItem.programItemId);
try {
const response = await SignupModel.find({
programItemId: { $in: programItemsIds },
}).lean();
logger.debug(`MongoDB: Found signups for time ${startTime}`);
const signups = response.flatMap((signup) => {
const result = DirectSignupSchemaDb.safeParse(signup);
Iif (!result.success) {
logger.error(
new Error(
`Error validating findDirectSignupsByStartTime DB value: programItemId: ${signup.programItemId}, ${JSON.stringify(result.error)}`,
),
);
return [];
}
return result.data;
});
const formattedResponse: FindDirectSignupsByStartTimeResponse[] =
signups.flatMap((signup) => {
return signup.userSignups.map((userSignup) => ({
...userSignup,
programItemId: signup.programItemId,
}));
});
return makeSuccessResult(formattedResponse);
} catch (error) {
logger.error(
new Error(`MongoDB: Error finding signups for time ${startTime}`, {
cause: error,
}),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const findUserDirectSignups = async (
username: string,
): Promise<Result<DirectSignupsForProgramItem[], MongoDbError>> => {
try {
const response = await SignupModel.find({
"userSignups.username": username,
}).lean();
logger.debug(`MongoDB: Found signups for user ${username}`);
const signups = response.flatMap((signup) => {
const result = DirectSignupSchemaDb.safeParse(signup);
Iif (!result.success) {
logger.error(
new Error(
`Error validating findUserDirectSignups DB value: programItemId: ${signup.programItemId}, ${JSON.stringify(result.error)}`,
),
);
return [];
}
return result.data;
});
return makeSuccessResult(signups);
} catch (error) {
logger.error(
new Error(`MongoDB: Error finding signups for user ${username}`, {
cause: error,
}),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const saveDirectSignup = async (
signupsRequest: SignupRepositoryAddSignup,
): Promise<Result<DirectSignupsForProgramItem, MongoDbError>> => {
const {
username,
directSignupProgramItemId,
signedToStartTime,
signupTime,
message,
priority,
} = signupsRequest;
// TODO: Remove fetching program item
const programItemResult = await findProgramItemById(
directSignupProgramItemId,
);
Iif (!programItemResult.ok) {
return programItemResult;
}
try {
const response = await SignupModel.findOneAndUpdate(
{
programItemId: directSignupProgramItemId,
count: { $lt: programItemResult.value.maxAttendance },
"userSignups.username": { $ne: username },
},
{
$addToSet: {
userSignups: {
username,
priority,
signedToStartTime,
signupTime,
message,
},
},
$inc: { count: 1 },
},
{
returnDocument: "after",
},
).lean();
// No response means that direct signups for program item is either not found of program item is full
if (!response) {
const signupsResult = await findDirectSignupsByProgramItemIds([
directSignupProgramItemId,
]);
Iif (!signupsResult.ok) {
return signupsResult;
}
const signup = first(signupsResult.value);
Iif (!signup) {
logger.warn(
`Saving direct signup for user '${username}' failed: program item '${directSignupProgramItemId}' not found`,
);
return makeErrorResult(MongoDbError.SIGNUP_NOT_FOUND);
}
return makeSuccessResult(signup);
}
logger.info(
`MongoDB: Direct signup to '${directSignupProgramItemId}' saved for user "${username}"`,
);
const result = DirectSignupSchemaDb.safeParse(response);
Iif (!result.success) {
logger.error(
new Error(
`Error validating saveDirectSignup DB value: ${JSON.stringify(result.error)}`,
),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
return makeSuccessResult(result.data);
} catch (error) {
logger.error(
new Error(`MongoDB: Error saving direct signup for user '${username}'`, {
cause: error,
}),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const saveDirectSignups = async (
signupsRequests: SignupRepositoryAddSignup[],
programItems: ProgramItem[],
): Promise<Result<SignupRepositoryAddSignupResponse, MongoDbError>> => {
const signupsByProgramItems = groupBy(
signupsRequests,
(signupsRequest) => signupsRequest.directSignupProgramItemId,
);
const droppedSignups: SignupRepositoryAddSignup[] = [];
const bulkOps: AnyBulkWriteOperation[] = Object.entries(
signupsByProgramItems,
).flatMap(([programItemId, directSignups]) => {
const programItem = programItems.find(
(p) => p.programItemId === programItemId,
);
Iif (!programItem) {
return [];
}
let finalSignups: SignupRepositoryAddSignup[] = directSignups;
if (directSignups.length > programItem.maxAttendance) {
// This case is handled gracefully, but it's still a bug worth flagging
logger.error(
new Error(
`Too many signups passed to saveSignups for program item ${programItem.programItemId} - maxAttendance: ${programItem.maxAttendance}, direct signups: ${directSignups.length}, dropping ${directSignups.length - programItem.maxAttendance} signups`,
),
);
const shuffledSignups = shuffle(directSignups);
finalSignups = shuffledSignups.slice(0, programItem.maxAttendance);
droppedSignups.push(...shuffledSignups.slice(programItem.maxAttendance));
}
return {
updateOne: {
filter: {
programItemId: programItem.programItemId,
},
// Append the new signups and recompute count from the resulting array in a single
// atomic pipeline update, so count can never drift from the userSignups it tallies
update: [
{
$set: {
userSignups: {
$concatArrays: [
{ $ifNull: ["$userSignups", []] },
{
$literal: finalSignups.map((signup) => ({
username: signup.username,
priority: signup.priority,
signedToStartTime: new Date(signup.signedToStartTime),
signupTime: new Date(signup.signupTime),
message: signup.message,
})),
},
],
},
},
},
{
$set: { count: { $size: "$userSignups" } },
},
],
},
};
});
try {
const response = await SignupModel.bulkWrite(bulkOps);
logger.info(`Updated signups for ${response.modifiedCount} program items`);
return makeSuccessResult({
modifiedCount: response.modifiedCount,
droppedSignups,
});
} catch (error) {
logger.error(
new Error("MongoDB: Error saving direct signups", { cause: error }),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
interface DelDirectSignupParams {
directSignupProgramItemId: string;
username: string;
}
export const delDirectSignup = async ({
directSignupProgramItemId,
username,
}: DelDirectSignupParams): Promise<
Result<DirectSignupsForProgramItem, MongoDbError>
> => {
try {
const signup = await SignupModel.findOneAndUpdate(
{
programItemId: directSignupProgramItemId,
"userSignups.username": username,
},
{
$pull: {
userSignups: {
username,
},
},
$inc: { count: -1 },
},
{ returnDocument: "after" },
).lean();
if (!signup) {
logger.error(
new Error(
`Signups to program item ${directSignupProgramItemId} for user ${username} not found`,
),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
const signupStillRemaining = signup.userSignups.some(
(userSignup) => userSignup.username === username,
);
Iif (signupStillRemaining) {
logger.error(
new Error(
`Error removing signup to program item ${directSignupProgramItemId} from user ${username}`,
),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
logger.info(
`MongoDB: Direct signup to '${
directSignupProgramItemId
}' removed from user '${username}'`,
);
const result = DirectSignupSchemaDb.safeParse(signup);
Iif (!result.success) {
logger.error(
new Error(
`Error validating delDirectSignup DB value: ${JSON.stringify(result.error)}`,
),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
return makeSuccessResult(result.data);
} catch (error) {
logger.error(
new Error(
`MongoDB: Error deleting signup to program item ${directSignupProgramItemId} from user ${username}`,
{ cause: error },
),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
// Remove several users' direct signups in a single bulk write instead of one round-trip each
export const delDirectSignups = async (
signups: readonly DelDirectSignupParams[],
): Promise<Result<void, MongoDbError>> => {
if (signups.length === 0) {
return makeSuccessResult();
}
try {
await SignupModel.bulkWrite(
signups.map(({ directSignupProgramItemId, username }) => ({
updateOne: {
filter: {
programItemId: directSignupProgramItemId,
"userSignups.username": username,
},
update: {
$pull: { userSignups: { username } },
$inc: { count: -1 },
},
},
})),
);
logger.info(`MongoDB: Removed ${signups.length} direct signups`);
return makeSuccessResult();
} catch (error) {
logger.error(
new Error("MongoDB: Error deleting direct signups", { cause: error }),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const delDirectSignupDocumentsByProgramItemIds = async (
programItemIds: string[],
): Promise<Result<void, MongoDbError>> => {
try {
await SignupModel.deleteMany({
programItemId: { $in: programItemIds },
});
return makeSuccessResult();
} catch (error) {
logger.error(
new Error(
"MongoDB: Error removing signup documents for program item IDs",
{
cause: error,
},
),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const resetDirectSignupsByProgramItemIds = async (
programItemIds: readonly string[],
): Promise<Result<void, MongoDbError>> => {
try {
await SignupModel.updateMany(
{
programItemId: { $in: programItemIds },
},
{ userSignups: [], count: 0 },
);
return makeSuccessResult();
} catch (error) {
logger.error(
new Error("MongoDB: Error removing signups for program item IDs", {
cause: error,
}),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const delAssignmentDirectSignupsByStartTime = async (
assignmentTime: string,
programItems: ProgramItem[],
): Promise<Result<void, MongoDbError>> => {
// Only remove "twoPhaseSignupProgramTypes" signups and don't remove "directSignupAlwaysOpen" signups
const doNotRemoveProgramItemIds = programItems
.filter((programItem) => !isLotterySignupProgramItem(programItem))
.map((programItem) => programItem.programItemId);
try {
await SignupModel.updateMany(
{
programItemId: { $nin: doNotRemoveProgramItemIds },
},
[
{
$set: {
userSignups: {
$filter: {
input: "$userSignups",
as: "userSignup",
cond: {
$ne: [
"$$userSignup.signedToStartTime",
new Date(assignmentTime),
],
},
},
},
},
},
{
$set: { count: { $size: "$userSignups" } },
},
],
{ updatePipeline: true },
);
logger.info(
`MongoDB: Deleted old signups for assignmentTime: ${assignmentTime}`,
);
return makeSuccessResult();
} catch (error) {
logger.error(
new Error("MongoDB: Error removing invalid signup", { cause: error }),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
export const createEmptyDirectSignupDocumentForProgramItems = async (
programItemIds: string[],
): Promise<Result<void, MongoDbError>> => {
const signupDocs = programItemIds.map((programItemId) => {
return new SignupModel({
programItemId,
userSignups: [],
count: 0,
});
});
try {
await SignupModel.create(signupDocs);
logger.info(
`MongoDB: Signup collection created for ${programItemIds.length} program items: ${programItemIds.join(", ")}`,
);
return makeSuccessResult();
} catch (error) {
logger.error(
new Error(
`MongoDB: Creating signup collection for ${programItemIds.length} program items failed`,
{ cause: error },
),
);
return makeErrorResult(MongoDbError.UNKNOWN_ERROR);
}
};
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