done purchases remove, ocr scan, read image

express-server/db-connect/db-connect.js

@@ -1,5 +1,7 @@
 const { query, nonQuery } = require("../db-config/postgresql-common");
 
+const stringSimilarity = require('string-similarity');
+
 //Create User Info
 
 async function updateUser(uid, mid) {
@@ -266,6 +268,61 @@ async function deleteItem(item_id, group_id, sl_id) {
     }
 }
 
+//Move to Done Purchases (delete items from shoppinglist & move into done_purchases table)
+
+async function moveDoneItems(uid, sl_id, billcontent) {
+    try {
+        //Get Items From Shoppinglist
+        let items = await query('SELECT row_to_json("Item") AS obj FROM "Item" JOIN "Group" USING (group_id) WHERE "Group".sl_id = $1;', [sl_id]);
+        let removeableItems = compareData(items, billcontent);
+
+        var today = new Date();
+        var dd = today.getDate();
+        var mm = today.getMonth()+1;
+        var yyyy = today.getFullYear();
+
+        if(dd<10) {
+            dd = '0'+dd
+        } 
+
+        if(mm<10) {
+            mm = '0'+mm
+        } 
+
+        today = mm + '/' + dd + '/' + yyyy;
+
+        for(let item of removeableItems) {
+            await nonQuery('INSERT INTO "Done_Purchase" (purchased_item_id, username, name, date, count) VALUES($1,$2,$3,$4,$5);',
+             [generate_item_id(), uid, item.name, today, 1]);
+
+        }
+        
+        for(let item of removeableItems) {
+            await nonQuery('DELETE FROM "Item" WHERE item_id = $1 AND group_id = $2 AND sl_id = $3;', [item.item_id, item.group_id, item.sl_id]);
+            console.log(item);
+
+        }
+
+        return "done"
+    }
+
+    catch(error) {
+        console.error(error);
+    }
+}
+
+//GET Done_Purchases
+
+async function getDonePurchases(uid) {
+    try {
+        let result = await query('SELECT row_to_json("Done_Purchase") AS obj FROM "Done_Purchase" WHERE username = $1;', [uid]);
+        return result;
+    }
+
+    catch(error) {
+        console.error(error);
+    }
+}
 
 
 
@@ -393,7 +450,61 @@ function users_to_array(admin, members) {
     return users;
 }
 
+//Compare Data
+
+function compareData(listitems, doneitems) {
+
+    let output = [];
+
+    for(let item of listitems) {
+        if(doneitems.includes(item.name)) {
+            output.push(item);
+        }
+
+        else if(doneitems.toUpperCase().includes(item.name.toUpperCase())) {
+            output.push(item);
+        }
+
+        else if(doneitems.toLowerCase().includes(item.name.toLowerCase())) {
+            output.push(item);
+        }
+
+        else if(probability(item.name, doneitems) > 0.3) {
+            output.push(item);
+        }
+
+        else if(probability(item.name.toUpperCase(), doneitems.toUpperCase()) > 0.3) {
+            output.push(item);
+        }
+
+        else if(probability(item.name.toLowerCase(), doneitems.toLowerCase()) > 0.3) {
+            output.push(item);
+        }
+    }
+
+    return output;
+}
+
+function probability(cur_item, data) {
+
+    let best = 0;
+
+    for(let i = 0; i < data.length; i++) {
+
+        let prob = stringSimilarity.compareTwoStrings(cur_item, data.slice(i, i + cur_item.length));
+
+        if(prob > best) {
+            best = prob;
+        }
+    }
+
+    return best;
+}
+
+
+
 module.exports = {
     getShoppinglistsAdmin, getShoppinglistsShared, newShoppinglist, displayShoppinglist, deleteShoppinglist, addGroup,
-    addItem, verifyInvite, createInvite, editShoppinglist, editGroup, editItem, deleteGroup, deleteItem, manInvite, updateUser
+    addItem, verifyInvite, createInvite, editShoppinglist, editGroup, editItem, deleteGroup, deleteItem, manInvite, updateUser,
+    moveDoneItems, getDonePurchases
 }