begin functional refactor

1 files changed, 83 insertions, 248 deletions

diff --git a/App.js b/App.js
index d7dc14b..7b7a22c 100644
--- a/App.js
+++ b/App.js
@@ -1,277 +1,112 @@
-const levels = [];
-const LEVEL_SIZE = 20;
-
-for (let i=0; (LEVEL_SIZE*i) < characters.length; i++) {
-   let start = (20*i) + 1;
-   let end = 20 * (i+1);
-   end = end > characters.length ? characters.length-1 : end;
-   
-   levels.push(`Level ${i+1} (${start} - ${end})`);
-}
-
-
-const gameModes = [
-   'Only Level Characters',
-   'Level + Previous Four Levels',
-   'All Characters up to Level',
-];
-
-const GAMEMODE_LEVEL_ONLY = 0;
-const GAMEMODE_PREV_LEVELS = 1;
-const GAMEMODE_ALL_TO_LEVEL = 2;
-
-
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-let state = {
-   level: 0,
-   gameMode: GAMEMODE_LEVEL_ONLY,
-   paused: false,
-   
-   levelCharacters: [],
-   index: 0,
-   
-   character: '你',
-   pinyin: 'ni3',
-
-   guessHistory: [],
-   numGuesses: 0,
-   correctGuesses: 0,
-   
-   hintLevel: 0,
-   
-   inputValue: undefined,
-   inputShaking: false,
-};
-
-
-function setState(update)
-{
-   for (const key in update)
-      state[key] = update[key];
-
-   render();
-}
+'use strict';
 
+const h = Inferno.h;
 
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+const GlobalState = {};
 
-const App = function()
-{
-   const {
-      levelCharacters, time,
-      level, gameMode,
-      character, pinyin,
-      numGuesses, correctGuesses,      
-      hintLevel,
-      inputValue, inputShaking
-   } = state;
-
-   return h(
-      'div', {},
-      [
-         h(ScoreView,
-           { level: level,
-             numCharacters: levelCharacters.length,
-             guesses: numGuesses,
-             correctGuesses,
-             time,
-           }),
-         
-         h('h1', {}, character),
-         
-         h(InputBox,
-           { value: inputValue,
-             shaking: inputShaking,
-             handleKeyDown: handleInputKeyDown,
-           }),
-
-         h('br'),
-
-         h(HintButton,
-           {
-              answer: pinyin,
-              hintLevel,
-              handleClick: () => setState({ hintLevel: hintLevel+1 }),
-           }),
-
-         h('br'),
-
-         h(StyleDropdown,
-           { options: levels,
-             index: level,
-             defaultText: 'Select a Level',
-             onChoose: (index) => {
-                setState({ level: index });
-                reset();
-             },
-           }),
+// IMPURE
+const updateState = (state, update) => Object.keys(update).forEach(
+   key => {
+      if (typeof(state[key]) === 'object')
+         updateState(state[key], update[key]);
+      else
+         state[key] = update[key];
+   });
 
-         h(StyleDropdown,
-           { options: gameModes,
-             index: gameMode,
-             defaultText: 'Select a Game Mode',
-             onChoose: (index) => {
-                setState({ gameMode: index });
-                reset();
-             },
-           }),
-      ]
+// IMPURE
+const setState = update => {
+   updateState(GlobalState, update);
+   Inferno.render(
+      h(App, {state: GlobalState, setState}),
+      document.getElementById('root')
    );
 }
 
 
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-function handleInputKeyDown(event)
-{
-   const KEY_ENTER = 13;
-      
-   if (event.keyCode === KEY_ENTER) {
-      makeGuess();
-   }
-   else {
-      setTimeout(() => setState({
-         inputValue: event.target.value
-      }), 300);
-   }
-}
-
-
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * App
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
 
-function makeGuess()
-{
-   const { inputValue, pinyin } = state;
-   
-   if (inputValue === pinyin)
-         correctAnswer();
-      else
-         shakeInputBox();
-}
+// IMPURE
+const App = ({state, setState}) => {
+   const { guessInput, } = state;
 
-function correctAnswer()
-{
-   setState({
-      inputValue: undefined,
-      hintLevel: 0,
+   return h(GuessInput, {
+      value: guessInput.value,
+      isShaking: guessInput.isShaking,
+      handleInput: updateStateOnEvent(state, handleGuessInputInput),
+      handleKeyDown: updateStateOnEvent(state, handleGuessInputKeyDown),
    });
-}
+};
 
-function shakeInputBox()
-{
-   setState({ inputShaking: true });
-   setTimeout(() => setState({ inputShaking: false }), 300);
-}
 
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * Components
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+const GuessInput = ({value, isShaking, handleInput, handleKeyDown}) => {
+   const inputTag = isShaking ? 'input.shaking' : 'input';
 
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+   return h(inputTag, {
+      type: 'text',
+      value,
+      onInput: handleInput,
+      onKeyDown: handleKeyDown,
+   });
+};
 
 
-// fisher-yates shuffle
-function shuffledArray(arr)
-{
-   const shuffled = [...arr];
-   for (let i=arr.length-1; i>0; i--) {
-      const j = Math.floor(Math.random() * i);
-      let tmp = shuffled[j];
-      shuffled[j] = shuffled[i];
-      shuffled[i] = tmp;
-   }
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * Event Handlers
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
 
-   return shuffled;
-}
+// IMPURE
+const updateStateOnEvent = (state, handler) =>
+      event => setState(handler(state, event));
 
 
-function buildLevel(level, levelSize, gameMode, characters)
-{
-   let start;
-   
-   switch (gameMode) {
-   case GAMEMODE_LEVEL_ONLY:
-      start = levelSize * level;
-      break;
+const handleGuessInputInput = (state, event) =>
+      ({ guessInput: { value: event.target.value } });
 
-   case GAMEMODE_PREV_LEVELS:
-      start = levelSize * (level - 4);
-      break;
 
-   case GAMEMODE_ALL_TO_LEVEL:
-      start = 0;
-      break;
+const handleGuessInputKeyDown = (state, event) => {
+   const KEYCODE_ENTER = 13;
 
-   default:
-      start = 0;
-      break;
+   if (event.keyCode === KEYCODE_ENTER) {
+      console.log(state.guessInput.value);
+      return { guessInput: { value: '' } };
    }
 
-   start = start < 0 ? 0 : start;
-   
-   let end = levelSize * (level + 1);
+   return {};
+};
 
-   const levelCharacters = [];
-   for (let i=start; i<end; i++)
-      levelCharacters.push(characters[i]);
 
-   return shuffledArray(levelCharacters);
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * Document load
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+// IMPURE
+window.onload = () => {
+   const initialState = {
+      guessInput: {
+         value: '',
+         isShaking: false,
+      },
+   };
+               
+   setState(initialState);
 }
-
-function reset() {
-   const { level, gameMode } = state;
-
-   const levelCharacters = buildLevel(level, LEVEL_SIZE, gameMode, characters);
-
-   const [character, pinyin] = levelCharacters[0];
-
-   clearInterval(timeInterval);
-   timeInterval = setInterval(() => {
-      const { paused, time } = state;
-      if (!paused)
-         setState({ time: time+1 });
-   }, 1000);
-   
-   setState({
-      levelCharacters,
-      index: 0,
-      paused: false,
-      time: 0,
-      
-      character,
-      pinyin,
       
-      guessHistory: [],
-      numGuesses: 0,
-      correctGuesses: 0,
       
-      hintLevel: 0,
-      
-      inputValue: undefined,
-      inputShaking: false,
-   });
-}
-
-
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-let timeInterval;
-
-function ScoreView({ level, numCharacters, guesses, correctGuesses, time })
-{
-   const minutes = Math.floor(time/60);
-   let seconds = time % 60;
-   seconds = seconds < 10 ? '0' + seconds : seconds;
-
-
-   const levelName = `Level ${level + 1}`;
-   const percentage =
-         guesses === 0 ? '100.0' : String(0.1 * Math.floor(1000 * correctGuesses / guesses));
-   const score = `${correctGuesses}/${numCharacters} (${percentage}%)`;
-
-   return h(
-      'div', {},
-      [
-         h('h1', {}, `${levelName} - ${minutes}:${seconds}`),
-         h('h1', {}, score),
-      ]
-   );
-}