From 6d783eae355a1ce047d96319cba51599e9f576db Mon Sep 17 00:00:00 2001
From: Catalin Pinte <catalin.pinte@vercel.com>
Date: Wed, 30 Nov 2022 17:07:44 +0200
Subject: [PATCH] Footer theme switcher (#894)

* Footer theme switcher

* Remove lazy loading & change rotation animation

* Changes

* Update ThemeSwitcher.tsx

* Requested style changes

* Update ThemeSwitcher.tsx

* Fix alignment

* Update ThemeSwitcher.tsx
---
 site/components/common/Footer/Footer.tsx      | 10 ++-
 .../common/I18nWidget/I18nWidget.module.css   |  4 +-
 .../common/I18nWidget/I18nWidget.tsx          |  8 +-
 site/components/icons/System.tsx              | 19 +++++
 site/components/icons/index.ts                |  1 +
 .../components/ui/ThemeSwitcher/ThemeIcon.tsx | 22 +++++
 .../ui/ThemeSwitcher/ThemeSwitcher.tsx        | 80 +++++++++++++++++++
 site/components/ui/ThemeSwitcher/index.ts     |  1 +
 site/lib/hooks/useToggleTheme.ts              | 11 +++
 9 files changed, 146 insertions(+), 10 deletions(-)
 create mode 100644 site/components/icons/System.tsx
 create mode 100644 site/components/ui/ThemeSwitcher/ThemeIcon.tsx
 create mode 100644 site/components/ui/ThemeSwitcher/ThemeSwitcher.tsx
 create mode 100644 site/components/ui/ThemeSwitcher/index.ts
 create mode 100644 site/lib/hooks/useToggleTheme.ts

diff --git a/site/components/common/Footer/Footer.tsx b/site/components/common/Footer/Footer.tsx
index 18e9b4027..313c9154a 100644
--- a/site/components/common/Footer/Footer.tsx
+++ b/site/components/common/Footer/Footer.tsx
@@ -7,6 +7,7 @@ import getSlug from '@lib/get-slug'
 import { Github, Vercel } from '@components/icons'
 import { Logo, Container } from '@components/ui'
 import { I18nWidget } from '@components/common'
+import ThemeSwitcher from '@components/ui/ThemeSwitcher'
 import s from './Footer.module.css'
 
 interface Props {
@@ -40,7 +41,7 @@ const Footer: FC<Props> = ({ className, pages }) => {
               </a>
             </Link>
           </div>
-          <div className="col-span-1 lg:col-span-8">
+          <div className="col-span-1 lg:col-span-7">
             <div className="grid md:grid-rows-4 md:grid-cols-3 md:grid-flow-col">
               {[...links, ...sitePages].map((page) => (
                 <span key={page.url} className="py-3 md:py-0 md:pb-4">
@@ -53,8 +54,10 @@ const Footer: FC<Props> = ({ className, pages }) => {
               ))}
             </div>
           </div>
-          <div className="col-span-1 lg:col-span-2 flex items-start lg:justify-end text-primary">
-            <div className="flex space-x-6 items-center h-10">
+          <div className="col-span-1 lg:col-span-3 flex items-start lg:justify-end text-primary">
+            <div className="flex space-x-4 items-center h-10">
+              <ThemeSwitcher />
+              <I18nWidget />
               <a
                 className={s.link}
                 aria-label="Github Repository"
@@ -62,7 +65,6 @@ const Footer: FC<Props> = ({ className, pages }) => {
               >
                 <Github />
               </a>
-              <I18nWidget />
             </div>
           </div>
         </div>
diff --git a/site/components/common/I18nWidget/I18nWidget.module.css b/site/components/common/I18nWidget/I18nWidget.module.css
index 5b486d537..a3c19babb 100644
--- a/site/components/common/I18nWidget/I18nWidget.module.css
+++ b/site/components/common/I18nWidget/I18nWidget.module.css
@@ -3,7 +3,7 @@
 }
 
 .button {
-  @apply h-10 px-2 rounded-md border border-accent-2 flex items-center justify-center transition-colors ease-linear;
+  @apply h-10 pl-2 pr-1 rounded-md border border-accent-2 flex items-center justify-center transition-colors ease-linear;
 }
 
 .button:hover {
@@ -32,7 +32,7 @@
 }
 
 .icon.active {
-  transform: rotate(180deg);
+  transform: rotate(90deg);
 }
 
 @screen lg {
diff --git a/site/components/common/I18nWidget/I18nWidget.tsx b/site/components/common/I18nWidget/I18nWidget.tsx
index 7c9124e3e..f9e2d62f7 100644
--- a/site/components/common/I18nWidget/I18nWidget.tsx
+++ b/site/components/common/I18nWidget/I18nWidget.tsx
@@ -3,7 +3,7 @@ import Link from 'next/link'
 import { FC, useState } from 'react'
 import { useRouter } from 'next/router'
 import s from './I18nWidget.module.css'
-import { Cross, ChevronUp } from '@components/icons'
+import { Cross, ChevronRight } from '@components/icons'
 import ClickOutside from '@lib/click-outside'
 import Image from 'next/image'
 interface LOCALE_DATA {
@@ -54,14 +54,14 @@ const I18nWidget: FC = () => {
             <Image
               width="20"
               height="20"
-              className="block mr-2 w-5"
+              className="block w-5"
               src={`/${LOCALES_MAP[currentLocale].img.filename}`}
               alt={LOCALES_MAP[currentLocale].img.alt}
               unoptimized
             />
             {options && (
-              <span className="cursor-pointer">
-                <ChevronUp className={cn(s.icon, { [s.active]: display })} />
+              <span className="cursor-pointer ml-1">
+                <ChevronRight className={cn(s.icon, { [s.active]: display })} />
               </span>
             )}
           </button>
diff --git a/site/components/icons/System.tsx b/site/components/icons/System.tsx
new file mode 100644
index 000000000..bb7367c7a
--- /dev/null
+++ b/site/components/icons/System.tsx
@@ -0,0 +1,19 @@
+const System = ({ ...props }) => (
+  <svg
+    data-testid="geist-icon"
+    fill="none"
+    height="16"
+    shapeRendering="geometricPrecision"
+    stroke="currentColor"
+    strokeLinecap="round"
+    strokeLinejoin="round"
+    strokeWidth="1.5"
+    viewBox="0 0 24 24"
+    className="text-current"
+    {...props}
+  >
+    <path d="M2 13.381h20M8.66 19.05V22m6.84-2.95V22m-8.955 0h10.932M4 19.05h16a2 2 0 002-2V4a2 2 0 00-2-2H4a2 2 0 00-2 2v13.05a2 2 0 002 2z"></path>
+  </svg>
+)
+
+export default System
diff --git a/site/components/icons/index.ts b/site/components/icons/index.ts
index 12e0cc202..72a65494c 100644
--- a/site/components/icons/index.ts
+++ b/site/components/icons/index.ts
@@ -11,6 +11,7 @@ export { default as Cross } from './Cross'
 export { default as Minus } from './Minus'
 export { default as Check } from './Check'
 export { default as Github } from './Github'
+export { default as System } from './System'
 export { default as Vercel } from './Vercel'
 export { default as MapPin } from './MapPin'
 export { default as ArrowLeft } from './ArrowLeft'
diff --git a/site/components/ui/ThemeSwitcher/ThemeIcon.tsx b/site/components/ui/ThemeSwitcher/ThemeIcon.tsx
new file mode 100644
index 000000000..c65442a74
--- /dev/null
+++ b/site/components/ui/ThemeSwitcher/ThemeIcon.tsx
@@ -0,0 +1,22 @@
+import { Moon, Sun, System } from '@components/icons'
+
+interface ThemeIconProps {
+  theme?: string
+  width: number
+  height: number
+}
+
+const ThemeIcon = ({ theme, ...props }: ThemeIconProps) => {
+  switch (theme) {
+    case 'light':
+      return <Sun {...props} />
+
+    case 'dark':
+      return <Moon {...props} />
+
+    default:
+      return <System {...props} />
+  }
+}
+
+export default ThemeIcon
diff --git a/site/components/ui/ThemeSwitcher/ThemeSwitcher.tsx b/site/components/ui/ThemeSwitcher/ThemeSwitcher.tsx
new file mode 100644
index 000000000..424410511
--- /dev/null
+++ b/site/components/ui/ThemeSwitcher/ThemeSwitcher.tsx
@@ -0,0 +1,80 @@
+import { useState } from 'react'
+import { ChevronRight, Cross } from '@components/icons'
+import { useToggleTheme } from '@lib/hooks/useToggleTheme'
+import cn from 'clsx'
+import ClickOutside from '@lib/click-outside'
+import ThemeIcon from './ThemeIcon'
+
+const ThemeSwitcher = () => {
+  const [display, setDisplay] = useState(false)
+  const { theme, themes, setTheme } = useToggleTheme()
+
+  return (
+    <ClickOutside active={display} onClick={() => setDisplay(false)}>
+      <div className="relative">
+        <div
+          className="flex items-center relative"
+          onClick={() => setDisplay(!display)}
+        >
+          <button
+            className={
+              'w-[125px] h-10 pl-2 pr-1 rounded-md border border-accent-2 flex items-center justify-between transition-colors ease-linear hover:border-accent-3 hover:shadow-sm'
+            }
+            aria-label="Theme Switcher"
+          >
+            <span className="flex flex-shrink items-center">
+              <ThemeIcon width={20} height={20} theme={theme} />
+              <span className={cn('capitalize leading-none ml-2')}>
+                {theme}
+              </span>
+            </span>
+            <span className="cursor-pointer">
+              <ChevronRight
+                className={cn('transition duration-300', {
+                  ['rotate-90']: display,
+                })}
+              />
+            </span>
+          </button>
+        </div>
+        <div className="absolute top-0 right-0">
+          {themes.length && display ? (
+            <div
+              className={
+                'fixed shadow-lg right-0 top-12 mt-2 origin-top-right w-full h-full outline-none bg-accent-0 z-40 lg:absolute lg:border lg:border-accent-1 lg:shadow-lg lg:w-56 lg:h-auto'
+              }
+            >
+              <div className="flex flex-row justify-end px-6">
+                <button
+                  className="md:hidden"
+                  onClick={() => setDisplay(false)}
+                  aria-label="Close panel"
+                >
+                  <Cross className="h-6 w-6" />
+                </button>
+              </div>
+              <ul>
+                {themes.map((t: string) => (
+                  <li key={t}>
+                    <button
+                      className="flex w-full capitalize cursor-pointer px-6 py-3 transition ease-in-out duration-150 text-primary leading-6 font-medium items-center hover:bg-accent-1"
+                      role={'link'}
+                      onClick={() => {
+                        setTheme(t)
+                        setDisplay(false)
+                      }}
+                    >
+                      {t}
+                    </button>
+                  </li>
+                ))}
+              </ul>
+            </div>
+          ) : null}
+        </div>
+      </div>
+    </ClickOutside>
+  )
+}
+
+export default ThemeSwitcher
diff --git a/site/components/ui/ThemeSwitcher/index.ts b/site/components/ui/ThemeSwitcher/index.ts
new file mode 100644
index 000000000..2b4931135
--- /dev/null
+++ b/site/components/ui/ThemeSwitcher/index.ts
@@ -0,0 +1 @@
+export { default } from './ThemeSwitcher'
diff --git a/site/lib/hooks/useToggleTheme.ts b/site/lib/hooks/useToggleTheme.ts
new file mode 100644
index 000000000..563af6533
--- /dev/null
+++ b/site/lib/hooks/useToggleTheme.ts
@@ -0,0 +1,11 @@
+import { useTheme } from 'next-themes'
+import { useEffect, useState } from 'react'
+
+export const useToggleTheme = () => {
+  const { theme, themes, setTheme } = useTheme()
+  const [themeValue, setThemeValue] = useState<string>('system')
+
+  useEffect(() => setThemeValue(theme), [theme])
+
+  return { theme: themeValue, setTheme, themes }
+}