Bestenliste und Scores gespeichert und beim Ende eines Spiel Rang anzeige

backend/src/Database/ScoreManager/ScoreManager.js

@@ -0,0 +1,44 @@
+const mySql = require("mysql2");
+const Score = require("./Score");
+
+class ScoreManager{
+    /**@param {mySql.Connection} connection*/
+    constructor(connection) {
+        this.connection = connection;
+    }
+
+    async getAllScores(){
+        const response = await this.connection.promise().query("SELECT * FROM scores ORDER BY score DESC");
+        const sortedScores = response[0].map(scoreData => new Score(scoreData));
+
+        return sortedScores;
+    }
+
+    async createScore(newScoreJson){
+        const sql = `INSERT INTO scores (user1, user2, score) VALUES (
+            ${newScoreJson.user1}, ${newScoreJson.user2}, ${newScoreJson.score})`;
+        
+        const insertResult = await this.connection.promise().query(sql);
+        const insertId = insertResult[0].insertId;
+        
+        const selectSql = `SELECT * FROM scores WHERE id = ${insertId}`;
+        const selectResult = await this.connection.promise().query(selectSql);
+        
+        return new Score(selectResult[0][0]);
+    }
+
+    async getScoreById(id){
+        const response = await this.connection.promise().query(`SELECT * FROM scores WHERE id = ${id}`);
+        return new Score(response.rows[0][0]);
+    }
+
+    async getScoreRang(id){
+        const allSortetScores = await this.getAllScores();
+
+        const score = allSortetScores.find(score => score.id === id);
+
+        return allSortetScores.indexOf(score) + 1;
+    }
+}
+
+module.exports = ScoreManager;