Enable words to be deleted.

public/api/Dictionary.php

@@ -189,10 +189,12 @@ WHERE dictionary=$dictionary";
     return array();
   }
 
-  public function setWords ($dictionary, $words = array()) {
+  public function setWords ($user, $dictionary, $words = array()) {
     $query = 'INSERT INTO words (dictionary, word_id, name, pronunciation, part_of_speech, definition, details, last_updated, created_on) VALUES ';
     $params = array();
+    $word_ids = array();
     foreach($words as $word) {
+      $word_ids[] = $word['id'];
       $query .= "(?, ?, ?, ?, ?, ?, ?, ?, ?), ";
       $params[] = $dictionary;
       $params[] = $word['id'];
@@ -213,6 +215,29 @@ details=VALUES(details),
 last_updated=VALUES(last_updated)';
     
     $results = $this->db->execute($query, $params);
+
+    if ($results) {
+      $database_words = $this->getWords($user, $dictionary);
+      $database_ids = array_map(function($database_word) { return $database_word['id']; }, $database_words);
+      $words_to_delete = array_filter($database_ids, function($database_id) use($word_ids) { return !in_array($database_id, $word_ids); });
+      if ($words_to_delete) {
+        $delete_results = $this->deleteWords($dictionary, $words_to_delete);
+        return $delete_results;
+      }
+    }
+
+    return $results;
+  }
+
+  public function deleteWords ($dictionary, $word_ids) {
+    $query = 'DELETE FROM words WHERE dictionary=? AND word_id IN (';
+    $params = array($dictionary);
+    foreach($word_ids as $word_id) {
+      $query .= '?, ';
+      $params[] = $word_id;
+    }
+    $query = trim($query, ', ') . ')';
+    $results = $this->db->execute($query, $params);
     return $results;
   }
 }

public/api/User.php

@@ -203,8 +203,23 @@ VALUES (?, ?, ?, ?, ?, ?)';
     $user_data = $this->token->decode($token);
     if ($user_data !== false) {
       $dictionary = $user_data->dictionary;
-      $updated_words = $this->dictionary->setWords($dictionary, $words);
+      $user = $user_data->id;
-      if ($updated_words > 0) {
+      $updated_words = $this->dictionary->setWords($user, $dictionary, $words);
+      if ($updated_words) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  public function deleteWordFromCurrentDictionary ($token, $word_id) {
+    // Useful even for just one word
+    $user_data = $this->token->decode($token);
+    if ($user_data !== false) {
+      $dictionary = $user_data->dictionary;
+      $user = $user_data->id;
+      $deleted_word = $this->dictionary->deleteWords($dictionary, array($word_id));
+      if ($deleted_word) {
         return true;
       }
     }

public/api/index.php

@@ -244,6 +244,26 @@ switch ($action) {
       'error' => true,
     ), 400);
   }
+  case 'delete-word': {
+    if ($token !== false && isset($request['word'])) {
+      $user = new User();
+      $delete_word_success = $user->deleteWordFromCurrentDictionary($token, $request['word']);
+      if ($delete_word_success !== false) {
+        return Response::json(array(
+          'data' => 'Deleted successfully',
+          'error' => false,
+        ), 200);
+      }
+      return Response::json(array(
+        'data' => 'Could not delete word: invalid token',
+        'error' => true,
+      ), 401);
+    }
+    return Response::json(array(
+      'data' => 'Could not delete word: required data missing',
+      'error' => true,
+    ), 400);
+  }
 
   default: {
     return Response::html('Hi!');

src/managers/Word.js

@@ -73,6 +73,10 @@ export class Word {
     return wordDb.words.delete(wordId)
     .then(() => {
       console.log('Word deleted successfully');
+      request('delete-word', {
+        token: store.get('LexicongaToken'),
+        word: wordId,
+      }, response => console.log(response));
     })
     .catch(error => {
       console.error(error);