added backend implementation

backend/models/maintenanceVisitsTodosModel.js

@@ -0,0 +1,71 @@
+import ownConn from "../dbConfig.js";
+
+//insert maintenance visit todo to databased
+export const insertMaintenanceVisitTodo = async (data, result) => {
+  try {
+    const results = await ownConn.query(`INSERT INTO maintenanceVisitTodos(templateID, step, asset, task, comment, done) VALUES(?, ?, ?, ?, ?, ?)`, [data.templateID, data.step, data.asset, data.task, data.comment, data.done])
+    result(null, results);
+  }
+  catch (err) {
+    // Manage Errors
+    console.log("SQL error : ", err);
+    result(err, null);
+  }
+};
+
+//get single maintenance visit todo by id
+export const getMaintenanceVisitTodosById = async (id, result) => {
+  try {
+    let sql = `SELECT * FROM maintenanceVisitTodos WHERE templateID = ? ORDER BY primaryID ASC`;
+    const results = await ownConn.execute(sql, [id])
+    result(null, results);
+  }
+  catch (err) {
+    // Manage Errors
+    console.log("SQL error : ", err);
+    result(err, null);
+  }
+};
+
+//get single maintenance visit todo by asset
+export const getMaintenanceVisitTodosByAsset = async (id, result) => {
+  try {
+    let sql = `SELECT * FROM maintenanceVisitTodos WHERE asset = ? ORDER BY primaryID ASC`;
+    const results = await ownConn.execute(sql, [id])
+    result(null, results);
+  }
+  catch (err) {
+    // Manage Errors
+    console.log("SQL error : ", err);
+    result(err, null);
+  }
+};
+
+// Update maintenance visit todo to Database
+export const updateMaintenanceVisitTodoById = async (data, result) => {
+  try {
+    const id = data.primaryID;
+    let sql = `UPDATE maintenanceVisitTodos SET step = ?, asset = ?, task = ?, comment = ?, done = ? WHERE primaryID = ?`;
+    const results = await ownConn.query(sql, [data.step, data.asset, data.task, data.comment, id])
+    result(null, results);
+  }
+  catch (err) {
+    // Manage Errors
+    console.log("SQL error : ", err);
+    result(err, null);
+  }
+};
+
+// Delete maintenance visit todo to Database
+export const deleteMaintenanceVisitTodosByPrimaryID = async (id, result) => {
+  try {
+    let sql = `DELETE FROM maintenanceVisitTodos WHERE primaryID = ?`;
+    const results = await ownConn.query(sql, [id])
+    result(null, results);
+  }
+  catch (err) {
+    // Manage Errors
+    console.log("SQL error : ", err);
+    result(err, null);
+  }
+};