text: import { take, put } from "redux-saga/effects";
  import { createConnector, createSchema, reducer, selector } from "redeclare";
  import { connect as reduxConnect } from "react-redux";
  import { draw, drawEvents, drawFrames } from "./draw";
  import { transients } from "./transient";
  import { encodeString } from "./codec";
  import { sleep } from "../util/sleep";
  import { env } from "../constants";
  
  const { frameRate } = env;
  
  export const schema = createSchema(
      {
          tick: [], // game clock signal
          play: [], // set play mode to playing
          step: [], // set play mode to stepping
          draw__request: ["x", "y"], // coordinates for drawing pixel
          draw: ["payload"], // write a pixel to the animation with the current pixel settings
          seek: ["position"], // move the play head to position
          setColor: ["color"], // set draw color
          setSpeed: ["speed"], // set draw ttl
          done__request: [],
          done: ["id"], // save animation, go to sharing URL
          reset: [], // clear animation, go to play screen
          load: ["id"], // load animation from URL
          routeChanged: ["location"],
          toPlay: []
      },
      {
          route: reducer(
              {
                  routeChanged: (state, { location }) => location,
                  toPlay: () => ({ query: {}, path: ["play"] }),
                  reset: () => ({ query: {}, path: ["play"] }),
                  done: (state, { id }) => ({ query: {}, path: ["view", id] })
              },
              {}
          ),
          draw,
          drawEvents,
          drawFrames,
          transients,
          grid: selector("drawFrames", "transients", (
              drawFrames,
              { colorStep }
          ) =>
              Object.assign({}, drawFrames, { colorStep }))
      }
  );
  
  function* drawSaga(getState) {
      let lastPayload = {};
      while (true) {
          const { x, y } = yield take("draw__request");
          const { step, decay, color } = schema.selectors.transients(getState());
          const payload = { x, y, step, decay, color };
  
          if (
              lastPayload.x === payload.x &&
                  lastPayload.y === payload.y &&
                  lastPayload.color === payload.color &&
                  lastPayload.decay === payload.decay
          ) {
              continue;
          }
          lastPayload = payload;
  
          yield put(schema.actions.draw(payload));
      }
  }
  
  function* doneSaga(getState) {
      while (true) {
          yield take("done__request");
          const events = schema.selectors.drawEvents(getState());
          const id = encodeString(events);
          yield put(schema.actions.done(id));
      }
  }
  
  function* tick() {
      while (true) {
          yield put(schema.actions.tick());
          yield sleep(1000 / frameRate);
      }
  }
  
  export const sagas = [drawSaga, tick, doneSaga];
  export const connect = createConnector(schema, reduxConnect);
  