Sharkey/src/client/scripts/theme-editor.ts

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import { v4 as uuid} from 'uuid';
import { themeProps, Theme } from './theme';
export type Default = null;
export type Color = string;
export type FuncName = 'alpha' | 'darken' | 'lighten';
export type Func = { type: 'func', name: FuncName, arg: number, value: string };
export type RefProp = { type: 'refProp', key: string };
export type RefConst = { type: 'refConst', key: string };
export type ThemeValue = Color | Func | RefProp | RefConst | Default;
export type ThemeViewModel = [ string, ThemeValue ][];
export const fromThemeString = (str?: string) : ThemeValue => {
if (!str) return null;
if (str.startsWith(':')) {
const parts = str.slice(1).split('<');
const name = parts[0] as FuncName;
const arg = parseFloat(parts[1]);
const value = parts[2].startsWith('@') ? parts[2].slice(1) : '';
return { type: 'func', name, arg, value };
} else if (str.startsWith('@')) {
return {
type: 'refProp',
key: str.slice(1),
};
} else if (str.startsWith('$')) {
return {
type: 'refConst',
key: str.slice(1),
};
} else {
return str;
}
};
export const toThemeString = (value: Color | Func | RefProp | RefConst) => {
if (typeof value === 'string') return value;
switch (value.type) {
case 'func': return `:${value.name}<${value.arg}<@${value.value}`;
case 'refProp': return `@${value.key}`;
case 'refConst': return `$${value.key}`;
}
};
export const convertToMisskeyTheme = (vm: ThemeViewModel, name: string, desc: string, author: string, base: 'dark' | 'light'): Theme => {
const props = { } as { [key: string]: string };
for (const [ key, value ] of vm) {
if (value === null) continue;
props[key] = toThemeString(value);
}
return {
id: uuid(),
name, desc, author, props, base
};
};
export const convertToViewModel = (theme: Theme): ThemeViewModel => {
const vm: ThemeViewModel = [];
// プロパティの登録
vm.push(...themeProps.map(key => [ key, fromThemeString(theme.props[key])] as [ string, ThemeValue ]));
// 定数の登録
const consts = Object
.keys(theme.props)
.filter(k => k.startsWith('$'))
.map(k => [ k, fromThemeString(theme.props[k]) ] as [ string, ThemeValue ]);
vm.push(...consts);
return vm;
};