X-Git-Url: https://git.njae.me.uk/?a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fuk%2Fme%2Fnjae%2Fsunshine%2Fdata%2FWeatherContract.java;fp=app%2Fsrc%2Fmain%2Fjava%2Fuk%2Fme%2Fnjae%2Fsunshine%2Fdata%2FWeatherContract.java;h=6555465a0b59f7b8cd7c6f7b1013a6dd7bc8a498;hb=10265f8b4d2e1cb0f74f50ac7700aacad6bd2255;hp=99dd2d1b9168aa2d8397cd0cfb946ada82c21e36;hpb=7b993579d6156ccbee09d55ff4b175359e85eb4c;p=Sunshine.git

diff --git a/app/src/main/java/uk/me/njae/sunshine/data/WeatherContract.java b/app/src/main/java/uk/me/njae/sunshine/data/WeatherContract.java
index 99dd2d1..6555465 100644
--- a/app/src/main/java/uk/me/njae/sunshine/data/WeatherContract.java
+++ b/app/src/main/java/uk/me/njae/sunshine/data/WeatherContract.java
@@ -1,14 +1,62 @@
 package uk.me.njae.sunshine.data;
 
+import android.content.ContentUris;
+import android.net.Uri;
 import android.provider.BaseColumns;
 
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
 /**
  * Created by neil on 09/11/14.
  */
 public class WeatherContract {
+    // The "Content authority" is a name for the entire content provider, similar to the
+    // relationship between a domain name and its website.  A convenient string to use for the
+    // content authority is the package name for the app, which is guaranteed to be unique on the
+    // device.
+    public static final String CONTENT_AUTHORITY = "uk.me.njae.sunshine";
+
+    // Use CONTENT_AUTHORITY to create the base of all URI's which apps will use to contact
+    // the content provider.
+    public static final Uri BASE_CONTENT_URI = Uri.parse("content://" + CONTENT_AUTHORITY);
+
+
+    // Format used for storing dates in the database.  ALso used for converting those strings
+    // back into date objects for comparison/processing.
+    public static final String DATE_FORMAT = "yyyyMMdd";
+
+    /**
+     * Converts Date class to a string representation, used for easy comparison and database lookup.
+     * @param date The input date
+     * @return a DB-friendly representation of the date, using the format defined in DATE_FORMAT.
+     */
+    public static String getDbDateString(Date date){
+        // Because the API returns a unix timestamp (measured in seconds),
+        // it must be converted to milliseconds in order to be converted to valid date.
+        SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT);
+        return sdf.format(date);
+    }
+
+    // Possible paths (appended to base content URI for possible URI's)
+    // For instance, content://com.example.android.sunshine.app/weather/ is a valid path for
+    // looking at weather data. content://com.example.android.sunshine.app/givemeroot/ will fail,
+    // as the ContentProvider hasn't been given any information on what to do with "givemeroot".
+    // At least, let's hope not.  Don't be that dev, reader.  Don't be that dev.
+    public static final String PATH_WEATHER = "weather";
+    public static final String PATH_LOCATION = "location";
+
     /* Inner class that defines the table contents of the location table */
     public static final class LocationEntry implements BaseColumns {
 
+        public static final Uri CONTENT_URI =
+                BASE_CONTENT_URI.buildUpon().appendPath(PATH_LOCATION).build();
+
+        public static final String CONTENT_TYPE =
+                "vnd.android.cursor.dir/" + CONTENT_AUTHORITY + "/" + PATH_LOCATION;
+        public static final String CONTENT_ITEM_TYPE =
+                "vnd.android.cursor.item/" + CONTENT_AUTHORITY + "/" + PATH_LOCATION;
+
         // Table name
         public static final String TABLE_NAME = "location";
 
@@ -24,11 +72,24 @@ public class WeatherContract {
         // map intent, we store the latitude and longitude as returned by openweathermap.
         public static final String COLUMN_COORD_LAT = "coord_lat";
         public static final String COLUMN_COORD_LONG = "coord_long";
+
+        public static Uri buildLocationUri(long id) {
+            return ContentUris.withAppendedId(CONTENT_URI, id);
+        }
     }
 
     /* Inner class that defines the table contents of the weather table */
     public static final class WeatherEntry implements BaseColumns {
 
+        public static final Uri CONTENT_URI =
+                BASE_CONTENT_URI.buildUpon().appendPath(PATH_WEATHER).build();
+
+        public static final String CONTENT_TYPE =
+                "vnd.android.cursor.dir/" + CONTENT_AUTHORITY + "/" + PATH_WEATHER;
+        public static final String CONTENT_ITEM_TYPE =
+                "vnd.android.cursor.item/" + CONTENT_AUTHORITY + "/" + PATH_WEATHER;
+
+
         public static final String TABLE_NAME = "weather";
 
         // Column with the foreign key into the location table.
@@ -57,5 +118,35 @@ public class WeatherContract {
 
         // Degrees are meteorological degrees (e.g, 0 is north, 180 is south).  Stored as floats.
         public static final String COLUMN_DEGREES = "degrees";
+
+        public static Uri buildWeatherUri(long id) {
+            return ContentUris.withAppendedId(CONTENT_URI, id);
+        }
+
+        public static Uri buildWeatherLocation(String locationSetting) {
+            return CONTENT_URI.buildUpon().appendPath(locationSetting).build();
+        }
+
+        public static Uri buildWeatherLocationWithStartDate(
+                String locationSetting, String startDate) {
+            return CONTENT_URI.buildUpon().appendPath(locationSetting)
+                    .appendQueryParameter(COLUMN_DATETEXT, startDate).build();
+        }
+
+        public static Uri buildWeatherLocationWithDate(String locationSetting, String date) {
+            return CONTENT_URI.buildUpon().appendPath(locationSetting).appendPath(date).build();
+        }
+
+        public static String getLocationSettingFromUri(Uri uri) {
+            return uri.getPathSegments().get(1);
+        }
+
+        public static String getDateFromUri(Uri uri) {
+            return uri.getPathSegments().get(2);
+        }
+
+        public static String getStartDateFromUri(Uri uri) {
+            return uri.getQueryParameter(COLUMN_DATETEXT);
+        }
     }
 }