59 lines
1.7 KiB
TypeScript
59 lines
1.7 KiB
TypeScript
import {ClimbingRouteRatingDB} from '../ClimbingRouteRating.db';
|
|
import {RouteRating} from './RouteRating.interface';
|
|
|
|
/**
|
|
* Fetches and returns all ratings for the given route
|
|
* @param route_id The id of the route to get the ratings for
|
|
* @return Promise<RouteRating[]> The ratings
|
|
*/
|
|
export const findByRoute = async (route_id: string): Promise<RouteRating[]> => {
|
|
let conn = await ClimbingRouteRatingDB.getConnection();
|
|
try {
|
|
return await conn.query('SELECT rating_id, route_id, stars, timestamp FROM route_ratings WHERE route_id = ?', route_id);
|
|
} catch (err) {
|
|
throw err;
|
|
} finally {
|
|
// Return connection
|
|
await conn.end();
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Get the median amount of stars the given route got from climbers
|
|
* @param route_id The id of the route to get the rating for
|
|
* @return number The median amount of stars with 1 fraction digit.
|
|
*/
|
|
export const getStarsForRoute = async (route_id: string): Promise<number> => {
|
|
let ratings = await findByRoute(route_id);
|
|
|
|
let starsSum = 0;
|
|
let starsAmount = 0;
|
|
|
|
for (let rating of ratings) {
|
|
starsSum += rating.stars;
|
|
starsAmount++;
|
|
}
|
|
|
|
return Number((starsSum / starsAmount).toFixed(1));
|
|
};
|
|
|
|
/**
|
|
* Creates a new rating and returns the id
|
|
* @param route_id The id of the route to be rated
|
|
* @param stars The amount of stars to be given
|
|
* @return number The id of the created rating
|
|
*/
|
|
export const createRating = async (route_id: string, stars: number): Promise<number> => {
|
|
let conn = await ClimbingRouteRatingDB.getConnection();
|
|
try {
|
|
let res = await conn.query('INSERT INTO route_ratings (route_id, stars) VALUES (?, ?) RETURNING rating_id', [route_id, stars]);
|
|
|
|
return res[0].comment_id;
|
|
} catch (err) {
|
|
throw err;
|
|
} finally {
|
|
// Return connection
|
|
await conn.end();
|
|
}
|
|
};
|