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Merge pull request #105 from AY2324S1-CS2113-F11-1/meal_
fix missing
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,181 @@ | ||
| package seedu.duke.storagefile; | ||
|
|
||
| import com.google.gson.Gson; | ||
| import com.google.gson.GsonBuilder; | ||
| import com.google.gson.JsonDeserializationContext; | ||
| import com.google.gson.JsonDeserializer; | ||
| import com.google.gson.JsonElement; | ||
| import com.google.gson.JsonObject; | ||
| import com.google.gson.JsonParseException; | ||
| import com.google.gson.reflect.TypeToken; | ||
|
|
||
| import seedu.duke.Duke; | ||
| import seedu.duke.data.Date; | ||
| import seedu.duke.data.DateTime; | ||
| import seedu.duke.meal.*; | ||
|
|
||
| import java.io.BufferedReader; | ||
| import java.io.File; | ||
| import java.io.FileReader; | ||
| import java.io.FileWriter; | ||
| import java.io.IOException; | ||
| import java.lang.reflect.Type; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Paths; | ||
| import java.time.format.DateTimeFormatter; | ||
| import java.util.ArrayList; | ||
|
|
||
| /** | ||
| * A util used for managing the data of the program, using the io stream to | ||
| * save and read the data at a local address. | ||
| */ | ||
| public class DataManager { | ||
| private static String absolutePath; | ||
| private static String home = System.getProperty("user.home"); | ||
|
|
||
| /** | ||
| * Set the relative path to make clear which exact address the data file is | ||
| * going to save and read.Using relative path may make the program easier to | ||
| * modify when you need to change the absolute saving path. | ||
| * | ||
| * @param relativePath The address containing the name of the data file under | ||
| * the data folder, ignoring the address of the data folder. | ||
| * @throws IOException | ||
| */ | ||
| public static void setRelativePath(String relativePath) throws IOException { | ||
| String dataFolderPath = home + "\\AppData\\LocalLow\\FITNUS\\"; | ||
| // Logger.customPrint(dataFolderPath); | ||
| Files.createDirectories(Paths.get(dataFolderPath)); | ||
|
|
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| absolutePath = dataFolderPath + relativePath; | ||
| // Logger.customPrint(absolutePath); | ||
| } | ||
|
|
||
| /** | ||
| * Read the data from the path that has been previously set. | ||
| * | ||
| * @throws IOException | ||
| */ | ||
| public static String readData() throws IOException { | ||
| File file = new File(absolutePath); | ||
|
|
||
| // No existing file | ||
| if (file.createNewFile()) { | ||
| return ""; | ||
| } | ||
| BufferedReader reader = new BufferedReader(new FileReader(file)); | ||
|
|
||
| String result = "", line; | ||
| while ((line = reader.readLine()) != null) { | ||
| result += line + "\n"; | ||
| } | ||
| reader.close(); | ||
| return result.trim(); | ||
| } | ||
|
|
||
| /** | ||
| * Save the data to a file at the path that has been previously set. | ||
| * | ||
| * @param content The serialized data json that is going to be saved. | ||
| * @throws IOException | ||
| */ | ||
| public static void saveData(String content) throws Exception { | ||
| File file = new File(absolutePath); | ||
| file.createNewFile(); | ||
|
|
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| FileWriter writer = new FileWriter(file); | ||
| writer.write(content); | ||
| writer.close(); | ||
| Duke.ui.showToUser("Your data has been saved at the path:\n " + absolutePath); | ||
| } | ||
|
|
||
| /** | ||
| * Convert a json String to a CustomType that is set by the user. | ||
| * | ||
| * @param content A valid json String indicates a CustomType instance. | ||
| */ | ||
| public static <CustomType> CustomType convertFromJson(String json) { | ||
| Type type = new TypeToken<CustomType>() { | ||
| }.getType(); | ||
|
|
||
| Gson gson = new Gson(); | ||
|
|
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| return gson.fromJson(json, type); | ||
| } | ||
|
|
||
| /** | ||
| * Convert a json String to an ArrayList<Meal>. | ||
| * | ||
| * @param content A valid json String indicates an ArrayList<Meal>. | ||
| */ | ||
| public static ArrayList<Meal> convertFromJsonToMealList(String json) { | ||
| Type type = new TypeToken<ArrayList<Meal>>() { | ||
| }.getType(); | ||
|
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| Gson gson = new GsonBuilder() | ||
| // .registerTypeAdapter(Meal.class, new MealAdapter()) | ||
| // .registerTypeAdapter(DateTime.class, new DateTimeAdapter()) | ||
| .registerTypeAdapter(Date.class, new DateAdapter()) | ||
| .create(); | ||
|
|
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| return gson.fromJson(json, type); | ||
| } | ||
|
|
||
| /** | ||
| * Serialize any object to json. | ||
| * | ||
| * @param object Any variable that you want to serialize. | ||
| */ | ||
| public static String convertToJson(Object object) { | ||
| Gson gson = new Gson(); | ||
| return gson.toJson(object); | ||
| } | ||
|
|
||
| /** | ||
| * Used for deserializing Meal with a custom rule. | ||
| */ | ||
| private static class MealAdapter implements JsonDeserializer<Meal> { | ||
| @Override | ||
| public Meal deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) | ||
| throws JsonParseException { | ||
| JsonObject jsonObject = json.getAsJsonObject(); | ||
| return context.deserialize(jsonObject, Meal.class); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Used for deserializing DateTime with a custom rule. | ||
| */ | ||
| private static class DateTimeAdapter implements JsonDeserializer<DateTime> { | ||
| @Override | ||
| public DateTime deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) { | ||
| JsonObject jsonObject = json.getAsJsonObject(); | ||
|
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| String rawData = jsonObject.get("rawData").getAsString(); | ||
| try { | ||
| return new DateTime(rawData); | ||
| } catch (Exception exception) { | ||
| Duke.ui.showToUser(exception.toString()); | ||
| } | ||
| return null; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Used for deserializing Date with a custom rule. | ||
| */ | ||
| private static class DateAdapter implements JsonDeserializer<Date> { | ||
| @Override | ||
| public Date deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) { | ||
| JsonObject jsonObject = json.getAsJsonObject(); | ||
|
|
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| String rawData = jsonObject.get("standardString").getAsString(); | ||
| try { | ||
| return new Date(rawData, false); | ||
| } catch (Exception exception) { | ||
| Duke.ui.showToUser(exception.toString()); | ||
| } | ||
| return null; | ||
| } | ||
| } | ||
| } |