1 files changed, 132 insertions, 0 deletions
diff --git a/src/utils/search.ts b/src/utils/search.ts
new file mode 100644
index 00000000..4293ff25
--- /dev/null
+++ b/src/utils/search.ts
@@ -0,0 +1,132 @@
+import AsyncStorage from '@react-native-community/async-storage';
+
+import {BADGE_DATA} from '../constants/badges';
+import {ProfilePreviewType, CategoryPreviewType} from '../types';
+
+/*
+ * Gets all possible search suggestions.
+ */
+export const getSearchSuggestions = (): string[] => {
+  const suggestions: string[] = [];
+  for (const category of BADGE_DATA) {
+    for (const interest of category.data) {
+      suggestions.push(interest.badgeName);
+    }
+  }
+  return suggestions;
+};
+
+/*
+ * AsyncStorage key for list of recently-searched users.
+ */
+const recentlySearchedUsersKey = '@recently_searched_users';
+
+/*
+ * Stores `user` in AsyncStorage as a recently-searched user.
+ */
+export const addUserToRecentlySearched = async (user: ProfilePreviewType) => {
+  let users: ProfilePreviewType[];
+  // retrieve and update recently-searched categories list
+  try {
+    const usersJSON = await AsyncStorage.getItem(recentlySearchedUsersKey);
+    if (usersJSON) {
+      users = JSON.parse(usersJSON);
+      // if category already exists, move it to the end
+      for (let i = 0; i < users.length; i++) {
+        // TODO: speed up comparison by adding some id field to category
+        if (users[i].id === user.id) {
+          users.splice(i, 1);
+          break;
+        }
+      }
+      users.push(user);
+    } else {
+      users = [user];
+    }
+    // store updated list of recently-searched categories
+    try {
+      AsyncStorage.setItem(recentlySearchedUsersKey, JSON.stringify(users));
+    } catch (e) {
+      console.log(e);
+    }
+  } catch (e) {
+    console.log(e);
+  }
+};
+
+/*
+ * Retrieves and returns user's recently-searched categories from AsyncStorage.
+ */
+export const getRecentlySearchedUsers = async (): Promise<
+  ProfilePreviewType[]
+> => {
+  try {
+    const usersJSON = await AsyncStorage.getItem(recentlySearchedUsersKey);
+    if (usersJSON) return JSON.parse(usersJSON);
+  } catch (e) {
+    console.log(e);
+  }
+  return [];
+};
+
+/*
+ * AsyncStorage key for list of recently-searched categories.
+ */
+const recentlySearchedCategoriesKey = '@recently_searched_categories';
+
+/*
+ * Stores `category` in AsyncStorage as a recently-searched category.
+ */
+export const addCategoryToRecentlySearched = async (
+  category: CategoryPreviewType,
+) => {
+  let categories: CategoryPreviewType[];
+  // retrieve and update recently-searched categories list
+  try {
+    const categoriesJSON = await AsyncStorage.getItem(
+      recentlySearchedCategoriesKey,
+    );
+    if (categoriesJSON) {
+      categories = JSON.parse(categoriesJSON);
+      // if category already exists, move it to the end
+      for (let i = 0; i < categories.length; i++) {
+        // TODO: speed up comparison by adding some id field to category
+        if (categories[i].name === category.name) {
+          categories.splice(i, 1);
+          break;
+        }
+      }
+      categories.push(category);
+    } else {
+      categories = [category];
+    }
+    // store updated list of recently-searched categories
+    try {
+      AsyncStorage.setItem(
+        recentlySearchedCategoriesKey,
+        JSON.stringify(categories),
+      );
+    } catch (e) {
+      console.log(e);
+    }
+  } catch (e) {
+    console.log(e);
+  }
+};
+
+/*
+ * Retrieves and returns user's recently-searched categories from AsyncStorage.
+ */
+export const getRecentlySearchedCategories = async (): Promise<
+  CategoryPreviewType[]
+> => {
+  try {
+    const categoriesJSON = await AsyncStorage.getItem(
+      '@recently_searched_categories',
+    );
+    if (categoriesJSON) return JSON.parse(categoriesJSON);
+  } catch (e) {
+    console.log(e);
+  }
+  return [];
+};