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ThemeProvider.tsx
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ThemeProvider.tsx
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import React, { useMemo } from "react";
import variables from "@cambly/syntax-design-tokens/dist/json/variables.json";
type ThemeName = "classic" | "cambio";
type Theme = {
themeName: ThemeName;
};
const ThemeContext = React.createContext<Theme>({
themeName: "classic",
});
ThemeContext.displayName = "ThemeContext";
const classicToCambioKeyLookup = {
"color-base-black": "color-cambio-black",
"color-base-destructive-100": "color-cambio-destructive-100",
"color-base-destructive-200": undefined, // Deprecated - to be deleted
"color-base-destructive-300": "color-cambio-destructive-300",
"color-base-destructive-700": "color-cambio-destructive-700",
"color-base-destructive-800": undefined, // Deprecated - to be deleted
"color-base-destructive-900": "color-cambio-destructive-900",
"color-base-gray-10": "color-cambio-gray-370",
"color-base-gray-30": "color-cambio-gray-370",
"color-base-gray-60": "color-cambio-gray-870",
"color-base-gray-80": "color-cambio-gray-870",
"color-base-gray-100": "color-cambio-gray-100",
"color-base-gray-200": "color-cambio-gray-200",
"color-base-gray-300": "color-cambio-gray-300",
"color-base-gray-700": "color-cambio-gray-700",
"color-base-gray-800": "color-cambio-gray-800",
"color-base-gray-900": "color-cambio-gray-900",
"color-base-orange-100": undefined, // Deprecated - to be deleted
"color-base-orange-200": undefined, // Deprecated - to be deleted
"color-base-orange-300": undefined, // Deprecated - to be deleted
"color-base-orange-700": "color-cambio-orange",
"color-base-orange-800": undefined, // Deprecated - to be deleted
"color-base-orange-900": undefined, // Deprecated - to be deleted
"color-base-primary-100": "color-cambio-gray-100",
"color-base-primary-200": "color-cambio-gray-200",
"color-base-primary-300": "color-cambio-gray-300",
"color-base-primary-700": "color-cambio-gray-700",
"color-base-primary-800": "color-cambio-gray-800",
"color-base-primary-900": "color-cambio-gray-900",
"color-base-success-100": "color-cambio-success-100",
"color-base-success-200": undefined, // Deprecated - to be deleted
"color-base-success-300": "color-cambio-success-300",
"color-base-success-700": "color-cambio-success-700",
"color-base-success-800": undefined, // Deprecated - to be deleted
"color-base-success-900": "color-cambio-success-900",
"color-base-purple-100": undefined, // Deprecated - to be deleted
"color-base-purple-200": undefined, // Deprecated - to be deleted
"color-base-purple-300": undefined, // Deprecated - to be deleted
"color-base-purple-700": "color-cambio-purple",
"color-base-purple-800": undefined, // Deprecated - to be deleted
"color-base-purple-900": undefined, // Deprecated - to be deleted
"color-base-yellow-100": undefined, // Deprecated - to be deleted
"color-base-yellow-200": undefined, // Deprecated - to be deleted
"color-base-yellow-300": undefined, // Deprecated - to be deleted
"color-base-yellow-700": "color-cambio-yellow-700",
"color-base-yellow-800": undefined, // Deprecated - to be deleted
"color-base-yellow-900": undefined, // Deprecated - to be deleted
"color-base-white": "color-cambio-white",
};
function stylesForTheme(themeName: ThemeName) {
// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
const tokenVariables: Record<string, string> = variables;
return `
:root {
${Object.entries(tokenVariables)
.filter(([key]) => {
return themeName === "classic" ? !key.includes("cambio") : true;
})
.map(([key, value]) => {
// Replace classic values with cambio ones if they exist
if (
themeName === "cambio" &&
classicToCambioKeyLookup[
key as keyof typeof classicToCambioKeyLookup
]
) {
return [
key,
tokenVariables[
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
classicToCambioKeyLookup[
key as keyof typeof classicToCambioKeyLookup
]!
],
];
}
return [key, value];
})
.map(([key, value]) => `--${key}: ${value};`)
.join("\n")}
}
`;
}
export default function ThemeProvider({
themeName = "classic",
children,
}: {
themeName: ThemeName;
children: React.ReactNode;
}): React.ReactElement {
const value = useMemo(() => ({ themeName }), [themeName]);
const innerStyles = useMemo(() => stylesForTheme(themeName), [themeName]);
return (
<ThemeContext.Provider value={value}>
<style
dangerouslySetInnerHTML={{ __html: innerStyles }}
data-testid="themeprovider-style"
></style>
{children}
</ThemeContext.Provider>
);
}
export function useTheme(): Theme {
return React.useContext(ThemeContext);
}