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build-components.ts
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import { ComponentType, forwardRef, createElement, FunctionComponent } from 'react';
import {
IPublicTypeNpmInfo,
IPublicTypeComponentSchema,
IPublicTypeProjectSchema,
} from '@felce/lowcode-types';
import { isESModule } from './is-es-module';
import { isReactComponent, acceptsRef, wrapReactClass } from './is-react';
import { isObject } from './is-object';
import { isLowcodeProjectSchema } from './check-types';
import { isComponentSchema } from './check-types/is-component-schema';
type Component = ComponentType<any> | object;
interface LibraryMap {
[key: string]: string;
}
export function accessLibrary(library: string | Record<string, unknown>) {
if (typeof library !== 'string') {
return library;
}
return (window as any)[library] || generateHtmlComp(library);
}
export function generateHtmlComp(library: string) {
if (['a', 'img', 'div', 'span', 'svg'].includes(library)) {
return forwardRef((props, ref) => {
return createElement(library, { ref, ...props }, props.children);
});
}
}
export function getSubComponent(library: any, paths: string[]) {
const l = paths.length;
if (l < 1 || !library) {
return library;
}
let i = 0;
let component: any;
while (i < l) {
const key = paths[i]!;
let ex: any;
try {
component = library[key] || component;
} catch (e) {
ex = e;
component = null;
}
if (i === 0 && component == null && key === 'default') {
if (ex) {
return l === 1 ? library : null;
}
component = library;
} else if (component == null) {
return null;
}
library = component;
i++;
}
return component;
}
function findComponent(libraryMap: LibraryMap, componentName: string, npm?: IPublicTypeNpmInfo) {
if (!npm) {
return accessLibrary(componentName);
}
// libraryName the key access to global
// export { exportName } from xxx exportName === global.libraryName.exportName
// export exportName from xxx exportName === global.libraryName.default || global.libraryName
// export { exportName as componentName } from package
// if exportName == null exportName === componentName;
// const componentName = exportName.subName, if exportName empty subName donot use
const exportName = npm.exportName || npm.componentName || componentName;
const libraryName = libraryMap[npm.package] || exportName;
const library = accessLibrary(libraryName);
const paths = npm.exportName && npm.subName ? npm.subName.split('.') : [];
if (npm.destructuring) {
paths.unshift(exportName);
} else if (isESModule(library)) {
paths.unshift('default');
}
return getSubComponent(library, paths);
}
/**
* 判断是否是一个混合组件，即 components 是一个对象，对象值是 React 组件
* 示例：
* {
* Button: ReactNode,
* Text: ReactNode,
* }
*/
function isMixinComponent(components: any) {
if (!isObject(components)) {
return false;
}
return Object.keys(components).some((componentName) =>
isReactComponent(components[componentName]),
);
}
export function buildComponents(
libraryMap: LibraryMap,
componentsMap: {
[componentName: string]: IPublicTypeNpmInfo | ComponentType<any> | IPublicTypeComponentSchema;
},
createComponent: (
schema: IPublicTypeProjectSchema<IPublicTypeComponentSchema>,
) => Component | null,
) {
const components: any = {};
Object.keys(componentsMap).forEach((componentName) => {
let component = componentsMap[componentName];
if (component && (isLowcodeProjectSchema(component) || isComponentSchema(component))) {
if (isComponentSchema(component)) {
components[componentName] = createComponent({
version: '',
componentsMap: [],
componentsTree: [component],
});
} else {
components[componentName] = createComponent(component);
}
} else if (isReactComponent(component)) {
if (!acceptsRef(component)) {
component = wrapReactClass(component as FunctionComponent);
}
components[componentName] = component;
} else if (isMixinComponent(component)) {
components[componentName] = component;
} else {
component = findComponent(libraryMap, componentName, component);
if (component) {
if (!acceptsRef(component) && isReactComponent(component)) {
component = wrapReactClass(component as FunctionComponent);
}
components[componentName] = component;
}
}
});
return components;
}
export interface UtilsMetadata {
name: string;
npm: {
package: string;
version?: string;
exportName: string;
subName?: string;
destructuring?: boolean;
main?: string;
};
}
interface LibrayMap {
[key: string]: string;
}
interface ProjectUtils {
[packageName: string]: any;
}
export function getProjectUtils(
librayMap: LibrayMap,
utilsMetadata: UtilsMetadata[],
): ProjectUtils {
const projectUtils: ProjectUtils = {};
if (utilsMetadata) {
utilsMetadata.forEach((meta) => {
if (librayMap[meta?.npm?.package]) {
const lib = accessLibrary(librayMap[meta?.npm.package]);
if (lib?.destructuring) {
Object.keys(lib).forEach((name) => {
if (name === 'destructuring') return;
projectUtils[name] = lib[name];
});
} else if (meta.name) {
projectUtils[meta.name] = lib;
}
}
});
}
return projectUtils;
}