Add Admonition component (#5680)

* Add Admonition component

* Tweak mobile padding

* Format

src/components/Admonition.tsx

@@ -0,0 +1,118 @@
+import React from 'react'
+import {View} from 'react-native'
+
+import {atoms as a, useBreakpoints, useTheme} from '#/alf'
+import {CircleInfo_Stroke2_Corner0_Rounded as ErrorIcon} from '#/components/icons/CircleInfo'
+import {Eye_Stroke2_Corner0_Rounded as InfoIcon} from '#/components/icons/Eye'
+import {Leaf_Stroke2_Corner0_Rounded as TipIcon} from '#/components/icons/Leaf'
+import {Warning_Stroke2_Corner0_Rounded as WarningIcon} from '#/components/icons/Warning'
+import {Text as BaseText, TextProps} from '#/components/Typography'
+
+const colors = {
+  warning: {
+    light: '#DFBC00',
+    dark: '#BFAF1F',
+  },
+}
+
+type Context = {
+  type: 'info' | 'tip' | 'warning' | 'error'
+}
+
+const Context = React.createContext<Context>({
+  type: 'info',
+})
+
+export function Icon() {
+  const t = useTheme()
+  const {type} = React.useContext(Context)
+  const Icon = {
+    info: InfoIcon,
+    tip: TipIcon,
+    warning: WarningIcon,
+    error: ErrorIcon,
+  }[type]
+  const fill = {
+    info: t.atoms.text_contrast_medium.color,
+    tip: t.palette.primary_500,
+    warning: colors.warning.light,
+    error: t.palette.negative_500,
+  }[type]
+  return <Icon fill={fill} size="md" />
+}
+
+export function Text({
+  children,
+  style,
+  ...rest
+}: Pick<TextProps, 'children' | 'style'>) {
+  return (
+    <BaseText
+      {...rest}
+      style={[
+        a.flex_1,
+        a.text_sm,
+        a.leading_snug,
+        {
+          paddingTop: 1,
+        },
+        style,
+      ]}>
+      {children}
+    </BaseText>
+  )
+}
+
+export function Row({children}: {children: React.ReactNode}) {
+  return <View style={[a.flex_row, a.gap_sm]}>{children}</View>
+}
+
+export function Outer({
+  children,
+  type = 'info',
+}: {
+  children: React.ReactNode
+  type?: Context['type']
+}) {
+  const t = useTheme()
+  const {gtMobile} = useBreakpoints()
+  const borderColor = {
+    info: t.atoms.border_contrast_low.borderColor,
+    tip: t.atoms.border_contrast_low.borderColor,
+    warning: t.atoms.border_contrast_low.borderColor,
+    error: t.atoms.border_contrast_low.borderColor,
+  }[type]
+  return (
+    <Context.Provider value={{type}}>
+      <View
+        style={[
+          gtMobile ? a.p_md : a.p_sm,
+          a.rounded_sm,
+          a.border,
+          t.atoms.bg_contrast_25,
+          {
+            borderColor,
+          },
+        ]}>
+        {children}
+      </View>
+    </Context.Provider>
+  )
+}
+
+export function Admonition({
+  children,
+  type,
+}: {
+  children: TextProps['children']
+  type?: Context['type']
+}) {
+  return (
+    <Outer type={type}>
+      <Row>
+        <Icon />
+        <Text>{children}</Text>
+      </Row>
+    </Outer>
+  )
+}