chore: add missing files and improve Dockerfile

client/Dockerfile

@@ -8,7 +8,7 @@ WORKDIR /app
 COPY *.html *.json *.ts ./
 COPY ./src ./src
 COPY ./public ./public
-RUN npm ci --ignore-scripts --no-update-notifier --omit=dev && \
+RUN npm i --ignore-scripts --no-update-notifier --omit=dev && \
     npm run build && \
     rm -rf node_modules
 

client/src/context/FilterContext.ts

@@ -0,0 +1,12 @@
+import { createContext } from 'react';
+
+export interface FilterContextData {
+  filterText: string;
+  selectedOption: string;
+  setFilterText: (text: string) => void;
+  setSelectedOption: (option: string) => void;
+}
+
+const FilterContext = createContext<FilterContextData>({} as FilterContextData);
+
+export default FilterContext;

client/src/context/FilterProvider.tsx

@@ -0,0 +1,49 @@
+import React, { useEffect, useMemo, useState } from 'react';
+import FilterContext, { FilterContextData } from './FilterContext';
+
+const FILTER_TEXT_KEY = 'FILTER_TEXT';
+const FILTER_OPTION_KEY = 'FILTER_OPTION';
+
+interface Props {
+  children: React.ReactNode;
+}
+
+const FilterProvider: React.FC<Props> = ({ children }: Props) => {
+  const [filterText, setFilterTextState] = useState<string>(
+    () => localStorage.getItem(FILTER_TEXT_KEY) ?? ''
+  );
+  const [selectedOption, setSelectedOptionState] = useState<string>(
+    () => localStorage.getItem(FILTER_OPTION_KEY) ?? 'everything'
+  );
+
+  useEffect(() => {
+    localStorage.setItem(FILTER_TEXT_KEY, filterText);
+  }, [filterText]);
+
+  useEffect(() => {
+    localStorage.setItem(FILTER_OPTION_KEY, selectedOption);
+  }, [selectedOption]);
+
+  const setFilterText = (text: string): void => {
+    setFilterTextState(text);
+  };
+
+  const setSelectedOption = (option: string): void => {
+    setSelectedOptionState(option);
+  };
+
+  const contextValue: FilterContextData = useMemo(() => ({
+    filterText,
+    selectedOption,
+    setFilterText,
+    setSelectedOption
+  }), [filterText, selectedOption]);
+
+  return (
+    <FilterContext.Provider value={contextValue}>
+      {children}
+    </FilterContext.Provider>
+  );
+};
+
+export default FilterProvider;