src/main/java/io/zipcoder/ItemParser.java

@@ -1,31 +1,196 @@
 package io.zipcoder;
 
-import java.util.ArrayList;
-import java.util.Arrays;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.lang.reflect.Array;
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 public class ItemParser {
 
+    private int numberOfExceptions;
 
-    public ArrayList<String> parseRawDataIntoStringArray(String rawData){
+    public String readFromFile(String filePath) {
+        try {
+            File file = new File(filePath);
+            BufferedReader bufferedReader = new BufferedReader(new FileReader(file));
+            String stringFile = "";
+            String line;
+            while ((line = bufferedReader.readLine()) != null) {
+                stringFile += line + "\n";
+            }
+            bufferedReader.close();
+            return stringFile.trim();
+        } catch (IOException e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    public ArrayList<String> parseRawDataIntoStringArray(String rawData) {
         String stringPattern = "##";
-        ArrayList<String> response = splitStringWithRegexPattern(stringPattern , rawData);
+        ArrayList<String> response = splitStringWithRegexPattern(stringPattern, rawData);
         return response;
     }
 
-    public Item parseStringIntoItem(String rawItem) throws ItemParseException{
-        return null;
+    public Item parseStringIntoItem(String rawItem) throws ItemParseException {
+        List<String> keyValues = findKeyValuePairsInRawItemData(rawItem);
+
+        String name = findValue(keyValues.get(0));
+        double price = Double.valueOf(findValue(keyValues.get(1)));
+        String type = findValue(keyValues.get(2));
+        String expiration = findValue(keyValues.get(3));
+
+        return new Item(convertZeroTo0(name), price, type, expiration);
+    }
+
+    public List<Item> parseRawDataIntoItems(String rawData) {
+        List<Item> itemList = new ArrayList<>();
+
+        List<String> items = parseRawDataIntoStringArray(rawData);
+
+        for (String item : items) {
+            try {
+                itemList.add(parseStringIntoItem(item));
+            } catch (ItemParseException e) {
+                numberOfExceptions++;
+            }
+        }
+        return itemList;
+    }
+
+    public String findValue(String keyValue) throws ItemParseException {
+        List<String> keyAndValue = splitStringWithRegexPattern(":", keyValue);
+
+        if (keyAndValue.size() > 1) {
+            return convertToLowerCase(keyAndValue.get(1));
+        } else {
+            throw new ItemParseException();
+        }
+    }
+
+    public Map<String, Integer> itemCounts(List<Item> items) {
+        Map<String, Integer> itemMap = new HashMap<>();
+
+        for (Item item : items) {
+            if (!itemMap.containsKey(item.getName())) {
+                itemMap.put(item.getName(), 1);
+            } else {
+                itemMap.put(item.getName(), itemMap.get(item.getName()) + 1);
+            }
+        }
+
+        return itemMap;
+    }
+
+    public Map<Map<String, Double>, Integer> priceCounts(List<Item> items) {
+        Map<String, Double> namePrice = new HashMap<>();
+        Map<Map<String, Double>, Integer> itemMap = new HashMap<>();
+
+        for (Item item : items) {
+            if (!namePrice.containsKey(item.getName())) {
+                namePrice.put(item.getName(), item.getPrice());
+            }
+        }
+        // im tired
+        return itemMap;
+    }
+
+    public void printOutput(Map<String, Integer> itemMap) {
+        for (String name : itemMap.keySet()) {
+            System.out.println(String.format("name: %7s \t\t seen: %s times", capitalizeFirst(name), itemMap.get(name)));
+            System.out.println("============= \t\t =============");
+        }
+        System.out.println(String.format("\nErrors \t\t\t\t seen: %s times", getNumberOfExceptions()));
     }
 
-    public ArrayList<String> findKeyValuePairsInRawItemData(String rawItem){
-        String stringPattern = "[;|^]";
-        ArrayList<String> response = splitStringWithRegexPattern(stringPattern , rawItem);
+    public String convertToLowerCase(String input) {
+        String output = "";
+
+        List<String> upperAlpha = splitStringWithRegexPattern("", "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+        List<String> lowerAlpha = splitStringWithRegexPattern("", "abcdefghijklmnopqrstuvwxyz");
+        ArrayList<String> stringCharacters = stringToArrayList(input);
+
+        for (int i = 0; i < stringCharacters.size(); i++) {
+            for (int j = 0; j < upperAlpha.size(); j++) {
+                if (stringCharacters.get(i).equals(upperAlpha.get(j))) {
+                    stringCharacters.set(i, lowerAlpha.get(j));
+                }
+            }
+            output += stringCharacters.get(i);
+        }
+        return output;
+    }
+
+    public String convertZeroTo0(String input) {
+        String output = "";
+        ArrayList<String> stringCharacters = stringToArrayList(input);
+
+        for (int i = 0; i < stringCharacters.size(); i++) {
+            if (stringCharacters.get(i).equals("0")) {
+                stringCharacters.set(i, "o");
+            }
+            output += stringCharacters.get(i);
+        }
+        return output;
+    }
+
+    public String capitalizeFirst(String input) {
+        String output = "";
+        List<String> upperAlpha = splitStringWithRegexPattern("", "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+        List<String> lowerAlpha = splitStringWithRegexPattern("", "abcdefghijklmnopqrstuvwxyz");
+        ArrayList<String> stringCharacters = stringToArrayList(input);
+
+        for (int i = 0; i < stringCharacters.size(); i++) {
+            for (int j = 0; j < upperAlpha.size(); j++) {
+                if (stringCharacters.get(0).equals(lowerAlpha.get(j))) {
+                    stringCharacters.set(0, upperAlpha.get(j));
+                }
+            }
+            output += stringCharacters.get(i);
+        }
+        return output;
+    }
+
+    public ArrayList<String> stringToArrayList(String input) {
+        ArrayList<String> stringCharacters = new ArrayList<>();
+
+        Pattern pattern = Pattern.compile(".");
+        Matcher matcher = pattern.matcher(input);
+
+        while (matcher.find()) {
+            stringCharacters.add(matcher.group());
+        }
+
+        return stringCharacters;
+    }
+
+    public ArrayList<String> findKeyValuePairsInRawItemData(String rawItem) {
+        String stringPattern = "[^a-zA-Z0-9\\:\\.\\/]";
+        ArrayList<String> response = splitStringWithRegexPattern(stringPattern, rawItem);
         return response;
     }
 
-    private ArrayList<String> splitStringWithRegexPattern(String stringPattern, String inputString){
-        return new ArrayList<String>(Arrays.asList(inputString.split(stringPattern)));
+    private ArrayList<String> splitStringWithRegexPattern(String stringPattern, String inputString) {
+        return new ArrayList<>(Arrays.asList(inputString.split(stringPattern)));
     }
 
+    public int getNumberOfExceptions() {
+        return numberOfExceptions;
+    }
+
+    public static void main(String[] args) {
+        ItemParser itemParser = new ItemParser();
+
+        String rawData = itemParser.readFromFile("src/main/resources/RawData.txt");
 
+        List<Item> items = itemParser.parseRawDataIntoItems(rawData);
 
+        Map<String, Integer> itemMap = itemParser.itemCounts(items);
+
+        itemParser.printOutput(itemMap);
+    }
 }

src/main/resources/TestFile.txt

@@ -0,0 +1 @@
+meow meow

src/test/java/io/zipcoder/ItemParserTest.java

@@ -5,29 +5,32 @@ import org.junit.Before;
 import org.junit.Test;
 
 import java.util.ArrayList;
+import java.util.Map;
 
 import static org.junit.Assert.*;
 
 public class ItemParserTest {
 
-    private String rawSingleItem =    "naMe:Milk;price:3.23;type:Food;expiration:1/25/2016##";
+    private String rawSingleItem = "naMe:Milk;price:3.23;type:Food;expiration:1/25/2016##";
 
     private String rawSingleItemIrregularSeperatorSample = "naMe:MiLK;price:3.23;type:Food^expiration:1/11/2016##";
 
-    private String rawBrokenSingleItem =    "naMe:Milk;price:3.23;type:Food;expiration:1/25/2016##";
+    private String rawBrokenSingleItem = "naMe:Milk;price:3.23;type:Food;expiration:1/25/2016##";
+
+    private String rawBrokenSingleItem1 = "naMe:Milk;price:3.23;type:;expiration:1/25/2016##";
 
     private String rawMultipleItems = "naMe:Milk;price:3.23;type:Food;expiration:1/25/2016##"
-                                      +"naME:BreaD;price:1.23;type:Food;expiration:1/02/2016##"
-                                      +"NAMe:BrEAD;price:1.23;type:Food;expiration:2/25/2016##";
+            + "naME:BreaD;price:1.23;type:Food;expiration:1/02/2016##"
+            + "NAMe:BrEAD;price:1.23;type:Food;expiration:2/25/2016##";
     private ItemParser itemParser;
 
     @Before
-    public void setUp(){
+    public void setUp() {
         itemParser = new ItemParser();
     }
 
     @Test
-    public void parseRawDataIntoStringArrayTest(){
+    public void parseRawDataIntoStringArrayTest() {
         Integer expectedArraySize = 3;
         ArrayList<String> items = itemParser.parseRawDataIntoStringArray(rawMultipleItems);
         Integer actualArraySize = items.size();
@@ -35,28 +38,114 @@ public class ItemParserTest {
     }
 
     @Test
-    public void parseStringIntoItemTest() throws ItemParseException{
-        Item expected = new Item("milk", 3.23, "food","1/25/2016");
+    public void parseStringIntoItemTest() throws ItemParseException {
+        Item expected = new Item("milk", 3.23, "food", "1/25/2016");
         Item actual = itemParser.parseStringIntoItem(rawSingleItem);
         assertEquals(expected.toString(), actual.toString());
     }
 
+//    @Test(expected = ItemParseException.class)
+//    public void parseBrokenStringIntoItemTest() throws ItemParseException{
+//        itemParser.parseStringIntoItem(rawBrokenSingleItem);
+//    }
+
     @Test(expected = ItemParseException.class)
-    public void parseBrokenStringIntoItemTest() throws ItemParseException{
-        itemParser.parseStringIntoItem(rawBrokenSingleItem);
+    public void parseBrokenStringIntoItemTest1() throws ItemParseException {
+        itemParser.parseStringIntoItem(rawBrokenSingleItem1);
     }
 
     @Test
-    public void findKeyValuePairsInRawItemDataTest(){
+    public void findKeyValuePairsInRawItemDataTest() {
         Integer expected = 4;
         Integer actual = itemParser.findKeyValuePairsInRawItemData(rawSingleItem).size();
         assertEquals(expected, actual);
     }
 
     @Test
-    public void findKeyValuePairsInRawItemDataTestIrregular(){
+    public void findKeyValuePairsInRawItemDataTestIrregular() {
         Integer expected = 4;
         Integer actual = itemParser.findKeyValuePairsInRawItemData(rawSingleItemIrregularSeperatorSample).size();
         assertEquals(expected, actual);
     }
+
+    @Test
+    public void readFromFile() {
+        String expected = "meow meow";
+        String actual = itemParser.readFromFile("src/main/resources/TestFile.txt");
+
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void parseRawDataIntoItemsTest() {
+        int expected = 3;
+        int actual = itemParser.parseRawDataIntoItems(rawMultipleItems).size();
+
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void findValue() throws ItemParseException {
+        String expected = "milk";
+        String actual = itemParser.findValue(itemParser.findKeyValuePairsInRawItemData(rawSingleItem).get(0));
+
+        Double expected1 = 3.23;
+        Double actual1 = Double.valueOf(itemParser.findValue(itemParser.findKeyValuePairsInRawItemData(rawSingleItem).get(1)));
+
+        String expected2 = "food";
+        String actual2 = itemParser.findValue(itemParser.findKeyValuePairsInRawItemData(rawSingleItem).get(2));
+
+        String expected3 = "1/25/2016";
+        String actual3 = itemParser.findValue(itemParser.findKeyValuePairsInRawItemData(rawSingleItem).get(3));
+
+        Assert.assertEquals(expected, actual);
+        Assert.assertEquals(expected1, actual1);
+        Assert.assertEquals(expected2, actual2);
+        Assert.assertEquals(expected3, actual3);
+    }
+
+    @Test
+    public void countItem() {
+        Map<String, Integer> itemMap = itemParser.itemCounts(itemParser.parseRawDataIntoItems(rawMultipleItems));
+
+        int expected = 2;
+        int actual = itemMap.get("bread");
+
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void convertToLowerCase() {
+        String expected = "meow meow meow";
+        String actual = itemParser.convertToLowerCase("Meow mEOW meOw");
+
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void convertZeroTo0() {
+        String expected = "meow";
+        String actual = itemParser.convertZeroTo0("me0w");
+
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void capitalizeFirst() {
+        String expected = "Meow";
+        String actual = itemParser.capitalizeFirst("meow");
+
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void stringToArrayList() {
+        ArrayList<String> expected = new ArrayList<>();
+        expected.add("a");
+        expected.add("b");
+        expected.add("c");
+        ArrayList<String> actual = itemParser.stringToArrayList("abc");
+
+        Assert.assertEquals(expected, actual);
+    }
 }