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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | 5x 5x 5x 3x 2x 2x 10x 4x 4x 6x 6x 25x 25x 25x 9x 9x 9x 5x 9x 9x 9x | import { iWelcomeFactService, WelcomeFact } from "@/interfaces/iWelcomeFact";
import WelcomeFactEntity from "@/myorm/welcomeFact-entity";
import { FactQueryError, RemoteFactError } from "@/utils/ErrorTypes";
import logger from "@/utils/logger";
import assert from "assert";
export class WelcomeFactService implements iWelcomeFactService {
/**
* Gets the fact list from the remote repo, this list contains string, lines that
* start with '#', these need to be discarded. (currently only enlish)
*
* @precondition Connected to the internet
*
* @returns A list of string from the remote repo, these need to be parsed
* to remove comments
* * @throws RemoteFactError there is an issue retrieving the remote fact list
*/
async getRemoteFactList(): Promise<string[]> {
try {
const response = await fetch(
"https://raw.githubusercontent.com/ThompsonC-collab/immsapp-data/refs/heads/main/welcomeFacts.txt"
);
const factList = await response.text();
return factList.trim().split("\n");
} catch (error) {
if (error instanceof TypeError) {
throw new RemoteFactError(
`Response not of type 'txt', Error: ${error}`
);
} else E{
throw new RemoteFactError();
}
}
}
/**
* Wipes the current fact list and saves the new one to the database.
*
* This works because the random fact is retrieved before the table is
* cleared.
*
* @precondition list cannot be empty
* @async
* @param list The list of facts to save into the database
*/
async saveFactList(list: WelcomeFact[]): Promise<void> {
if (list.length === 0) {
logger.warning("The list of WelcomeFacts is empty");
// Do not clear as there is nothing to add
return;
}
// Simply remove all other facts
WelcomeFactEntity.clear();
// Add each fact into the database
for (const fact of list) {
logger.debug(fact);
const factEntity = new WelcomeFactEntity(fact);
await factEntity.save();
}
}
/**
*
* Gets a random fact from the WelcomeFact table.
*
* @precondition the WelcomeFact table must exist
* @precondition A fact must exist in the database.
*
* @param language the language the fact should be in. Defaults to english !!NOT IMPLEMENTED!!
* @returns a promise containng a 'random' fact
*
* @throws FaceQueryError if there is an issue with the WelcomeFaceEntity query.
*/
async getRandomFact(
language: "english" | "french" = "english"
): Promise<WelcomeFact> {
try {
const numberOfFacts = await WelcomeFactEntity.count();
if (numberOfFacts === 0) {
logger.warning("There are no welcome facts in the DB");
}
const randomN = Math.floor(Math.random() * numberOfFacts);
const randomFact: WelcomeFact[] = await WelcomeFactEntity.query(
`SELECT * FROM $table LIMIT 1 OFFSET ?`,
[randomN]
);
return randomFact[0];
} catch (error) {
logger.error(error);
throw new FactQueryError();
}
}
}
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