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import React, { useState, useEffect } from "react"
import { DevSettings } from "react-native"
import { loadString, saveString } from "../app/utils/storage"
/**
* Toggle Storybook mode, in __DEV__ mode only.
*
* In non-__DEV__ mode, or when Storybook isn't toggled on,
* renders its children.
*
* The mode flag is persisted in async storage, which means it
* persists across reloads/restarts - this is handy when developing
* new components in Storybook.
*/
export function ToggleStorybook(props) {
const [showStorybook, setShowStorybook] = useState(false)
const [StorybookUIRoot, setStorybookUIRoot] = useState(null)
useEffect(() => {
if (__DEV__ && DevSettings) {
// Load the setting from storage if it's there
loadString("devStorybook").then((storedSetting) => {
// Set the initial value
setShowStorybook(storedSetting === "on")
// Add our toggle command to the menu
DevSettings.addMenuItem("Toggle Storybook", () => {
setShowStorybook((show) => {
// On toggle, flip the current value
show = !show
// Write it back to storage
saveString("devStorybook", show ? "on" : "off")
// Return it to change the local state
return show
})
})
// Load the storybook UI once
setStorybookUIRoot(() => require("./storybook").StorybookUIRoot)
})
}
}, [])
if (showStorybook) {
return StorybookUIRoot ? <StorybookUIRoot /> : null
} else {
return props.children
}
}
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