Node/week2

courses/backend/advanced-javascript/week1/exercise-1.js

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+import { teas } from "./data/teas.js";
+
+teas.forEach(tea => console.log(tea.name));

courses/backend/advanced-javascript/week1/exercise-10.js

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+import { teas } from "./data/teas.js";
+
+const organicTeasInStock = teas.filter(tea => tea.inStock).filter(tea => tea.organic);

courses/backend/advanced-javascript/week1/exercise-11.js

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+import { teas } from "./data/teas.js";
+
+const greenTeaNames = teas.filter(tea => tea.type === "green").map(tea => tea.name);

courses/backend/advanced-javascript/week1/exercise-12.js

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+import { teas } from "./data/teas.js";
+
+const organicTeaStrings = teas.filter(tea => tea.organic).map(tea => `${tea.name} - ${tea.pricePerGram * 100} DKK/100g`);

courses/backend/advanced-javascript/week1/exercise-13.js

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+import { teas } from "./data/teas.js";
+
+const japaneseTeasByPrice = teas.filter(tea => tea.origin === "Japan").sort((a, b) => a.pricePerGram - b.pricePerGram);

courses/backend/advanced-javascript/week1/exercise-17.js

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+// filterTeas(teas, { organic: true });
+// // Returns all organic teas
+
+// filterTeas(teas, { origin: "Japan" });
+// // Returns all Japanese teas
+
+// filterTeas(teas, { organic: true, origin: "Japan" });
+// // Returns organic Japanese teas
+
+// filterTeas(teas, { type: "green", inStock: true });
+// // Returns green teas that are in stock
+
+import { teas } from "./data/teas.js";
+
+function filterTeas (teas, obj) {
+    const entries = Object.entries(obj);
+    entries.forEach((entry) => {
+        const key = entry[0];
+        const value = entry[1];
+        teas = teas.filter(tea => tea[key] === value);
+    })
+    return teas;
+}
+
+console.log(filterTeas(teas, { type: "green", inStock: true }));

courses/backend/advanced-javascript/week1/exercise-2.js

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+import { teas } from "./data/teas.js";
+
+teas.forEach(tea => console.log(`${tea.name} (${tea.origin})`));

courses/backend/advanced-javascript/week1/exercise-3.js

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+import { teas } from "./data/teas.js";
+
+let organicCount = 0;
+
+teas.forEach(tea => {if (tea.organic) organicCount++});
+
+console.log(organicCount);

courses/backend/advanced-javascript/week1/exercise-4.js

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+import { teas } from "./data/teas.js";
+
+const teaNames = teas.map(tea => tea.name);

courses/backend/advanced-javascript/week1/exercise-5.js

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+import { teas } from "./data/teas.js";
+
+const teaPrices = teas.map(tea => tea.pricePerGram * 100);
+
+console.log(teaPrices);

courses/backend/advanced-javascript/week1/exercise-6.js

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+import { teas } from "./data/teas.js";
+
+const displayStrings = teas.map(tea => `${tea.name} - ${tea.pricePerGram * 100} DKK/100g`);
+
+console.log(displayStrings);

courses/backend/advanced-javascript/week1/exercise-7.js

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+import { teas } from "./data/teas.js";
+
+const organicTeas = teas.filter(tea => tea.organic);

courses/backend/advanced-javascript/week1/exercise-8.js

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+import { teas } from "./data/teas.js";
+
+const japaneseTeas = teas.filter(tea => tea.origin === "Japan");

courses/backend/advanced-javascript/week1/exercise-9.js

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+import { teas } from "./data/teas.js";
+
+const highCaffeineTeas = teas.filter(tea => tea.caffeineLevel === "high");

courses/backend/advanced-javascript/week1/homework/exercise1.js

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+import { teas } from "../data/teas.js";
+
+const result = teas
+    .filter(tea => tea.caffeineLevel !== 'none')
+    .map(tea => tea.name.toUpperCase());
+
+console.log(result);

courses/backend/advanced-javascript/week1/homework/exercise2.js

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+import { teas } from "../data/teas.js";
+
+function inventoryReport(teas) {
+    const totalTeas = teas.length;
+    const inStock = teas.filter(tea => tea.inStock).length;
+    const outOfStock = totalTeas - inStock;
+    const totalInventoryValue = teas.map(tea => tea.pricePerGram * tea.stockCount).reduce((x, y) => x + y, 0);
+    const totalPricePerGram = teas.map(tea => tea.pricePerGram).reduce((x, y) => x + y, 0);
+    const averagePricePerGram = Number((totalPricePerGram / totalTeas).toFixed(2));
+    return {
+        totalTeas,
+        inStock,
+        outOfStock,
+        totalInventoryValue,
+        averagePricePerGram
+    }
+  };
+
+console.log(inventoryReport(teas));

courses/backend/advanced-javascript/week1/homework/exercise3.js

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+import { teas } from "../data/teas.js";
+
+function lowStockAlert(teas) {
+    return teas.filter(tea => tea.stockCount < 50).map(tea => {
+        return {
+            name: tea.name,
+            stock: tea.stockCount
+        }
+    }).sort((a, b) => a.stock - b.stock);
+}
+
+console.log(lowStockAlert(teas));

courses/backend/advanced-javascript/week1/homework/exercise4.js

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+import { teas } from "../data/teas.js";
+
+function teasByOrigin(teas) {
+    let origins = {};
+    teas.forEach(tea => {
+        const origin = tea.origin;
+        if (!origins[origin]) {
+            origins[origin] = [tea.name];
+        } else {
+            origins[origin].push(tea.name);
+        }
+    });
+    return origins;
+}
+
+console.log(teasByOrigin(teas));

courses/backend/advanced-javascript/week1/homework/exercise5.js

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+import { teas } from "../data/teas.js";
+
+function searchTeas(teas, query) {
+  const queryLower = query.toLowerCase();
+  // Return teas where the name contains the query (case-insensitive)
+  const filtered = teas.filter(tea => tea.name.toLowerCase().includes(queryLower));
+  // Return just the names, sorted alphabetically
+  const names = filtered.map(tea => tea.name).sort();
+  return names;
+}
+
+console.log(searchTeas(teas, "earl"));
+// Returns: [ 'Earl Grey', 'Jasmine Pearl' ]
+
+console.log(searchTeas(teas, "dragon"));
+// Returns: ["Dragon Well"]
+
+console.log(searchTeas(teas, "ch"));
+// Returns: ["Sencha", "Chamomile", "Matcha", "Lapsang Souchong", "Genmaicha"]

courses/backend/advanced-javascript/week1/homework/exercise6.js

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+import { teas } from "../data/teas.js";
+
+const totalValue = teas.reduce((sum, tea) => sum + tea.pricePerGram * tea.stockCount, 0);
+
+console.log("Total inventory value:", totalValue);

courses/backend/advanced-javascript/week1/homework/exercise7.js

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+import { teas } from "../data/teas.js";
+
+const countByType = teas.reduce((counts, tea) => {
+    counts[tea.type] ? counts[tea.type]++ : counts[tea.type] = 1;    
+    return counts;
+}, {});
+
+console.log(countByType);
+// Expected: { green: 6, black: 6, herbal: 4, oolong: 2, white: 2 }

courses/backend/advanced-javascript/week1/in-class/exercise1.js

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+import { teas } from "../data/teas.js";
+
+teas.forEach(tea => console.log(tea.name));

courses/backend/advanced-javascript/week1/in-class/exercise10.js

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+import { teas } from "../data/teas.js";
+
+const organicTeasInStock = teas.filter(tea => tea.inStock).filter(tea => tea.organic);
+
+console.log(organicTeasInStock);

courses/backend/advanced-javascript/week1/in-class/exercise11.js

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+import { teas } from "../data/teas.js";
+
+const greenTeaNames = teas.filter(tea => tea.type === "green").map(tea => tea.name);
+
+console.log(greenTeaNames);

courses/backend/advanced-javascript/week1/in-class/exercise12.js

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+import { teas } from "../data/teas.js";
+
+const organicTeaStrings = teas.filter(tea => tea.organic).map(tea => `${tea.name} - ${tea.pricePerGram * 100} DKK/100g`);
+
+console.log(organicTeaStrings);

courses/backend/advanced-javascript/week1/in-class/exercise13.js

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+import { teas } from "../data/teas.js";
+
+const japaneseTeasByPrice = teas.filter(tea => tea.origin === "Japan").sort((a, b) => a.pricePerGram - b.pricePerGram);
+
+console.log(japaneseTeasByPrice);

courses/backend/advanced-javascript/week1/in-class/exercise17.js

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+import { teas } from "../data/teas.js";
+
+function filterTeas (teas, obj) {
+    const entries = Object.entries(obj);
+    entries.forEach((entry) => {
+        const key = entry[0];
+        const value = entry[1];
+        teas = teas.filter(tea => tea[key] === value);
+    })
+    return teas;
+}
+
+console.log('Organic teas: ', filterTeas(teas, { organic: true }))
+// Returns all organic teas
+
+console.log('Japanese teas: ', filterTeas(teas, { origin: "Japan" }))
+// Returns all Japanese teas
+
+console.log('Organic Japanese teas: ', filterTeas(teas, { organic: true, origin: "Japan" }))
+// Returns organic Japanese teas
+
+console.log('Green teas in stock: ', filterTeas(teas, { type: "green", inStock: true }))
+// Returns green teas that are in stock);

courses/backend/advanced-javascript/week1/in-class/exercise2.js

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+import { teas } from "../data/teas.js";
+
+teas.forEach(tea => console.log(`${tea.name} (${tea.origin})`));

courses/backend/advanced-javascript/week1/in-class/exercise3.js

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+import { teas } from "../data/teas.js";
+
+let organicCount = 0;
+
+teas.forEach(tea => {if (tea.organic) organicCount++});
+
+console.log(organicCount);

courses/backend/advanced-javascript/week1/in-class/exercise4.js

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+import { teas } from "../data/teas.js";
+
+const teaNames = teas.map(tea => tea.name);
+
+console.log(teaNames);

courses/backend/advanced-javascript/week1/in-class/exercise5.js

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+import { teas } from "../data/teas.js";
+
+const teaPrices = teas.map(tea => tea.pricePerGram * 100);
+
+console.log(teaPrices);

courses/backend/advanced-javascript/week1/in-class/exercise6.js

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+import { teas } from "../data/teas.js";
+
+const displayStrings = teas.map(tea => `${tea.name} - ${tea.pricePerGram * 100} DKK/100g`);
+
+console.log(displayStrings);

courses/backend/advanced-javascript/week1/in-class/exercise7.js

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+import { teas } from "../data/teas.js";
+
+const organicTeas = teas.filter(tea => tea.organic);
+
+console.log(organicTeas);

courses/backend/advanced-javascript/week1/in-class/exercise8.js

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+import { teas } from "../data/teas.js";
+
+const japaneseTeas = teas.filter(tea => tea.origin === "Japan");
+
+console.log(japaneseTeas);

courses/backend/advanced-javascript/week1/in-class/exercise9.js

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+import { teas } from "../data/teas.js";
+
+const highCaffeineTeas = teas.filter(tea => tea.caffeineLevel === "high");
+
+console.log(highCaffeineTeas);