one/dist/esm/vite/plugins/kotlinSourceModule.mjs

One is a React framework for web, iOS, and Android apps.

import { existsSync, readFileSync } from "node:fs";
import { createRequire } from "node:module";
import { dirname, join } from "node:path";
import { methodSubscribed, methodWired, renderMethodCall, renderViewWires, toNativeSourceStructs } from "./nativeSourceWires.mjs";

function renderKotlinSourceModule(id, platform, root) {
	if (platform !== "android") {
		throw new Error(`[one] ${id} is Kotlin source and cannot be imported into an iOS build; use an .ios.ts entry`);
	}
	const appManifest = join(root, "package.json");
	const app = existsSync(appManifest) ? JSON.parse(readFileSync(appManifest, "utf8")) : {};
	const requireFromFile = createRequire(id);
	const { kotlinSourceId, renderKotlinSourceGlue, writeNativeSourceDeclaration } = requireFromFile("vxrn/native-source-contract");
	const contract = writeNativeSourceDeclaration(id);
	const sourceId = kotlinSourceId(root, id);
	if (Object.hasOwn(app.dependencies ?? {}, "expo") || Object.hasOwn(app.devDependencies ?? {}, "expo")) {
		if (!existsSync(join(root, "android", "app", "src", "main", "java", "one", "source", sourceId))) {
			throw new Error(`[one] ${id} needs one prebuild, or Expo prebuild with nativeSource enabled in the vxrn config plugin and android generated`);
		}
	}
	const hash = renderKotlinSourceGlue(sourceId, contract).hash;
	const oneRoot = dirname(requireFromFile.resolve("one/package.json"));
	const nativeSource = join(oneRoot, "dist/esm/platform/native-source/index.native.js");
	const wireModule = join(oneRoot, "dist/esm/platform/native-source/wire.native.js");
	const eventsModule = join(oneRoot, "dist/esm/platform/native-source/events.native.js");
	const needsWire = contract.modules.some((module) => module.methods.some(methodWired));
	const needsEvents = contract.modules.some((module) => module.methods.some(methodSubscribed));
	const exports = contract.modules.map((module) => `export const ${module.name} = Object.freeze({${module.methods.map((method) => renderMethodCall(`${sourceId}.${module.name}`, method, hash)).join(",")}})`).join("\n");
	const viewHost = join(oneRoot, "dist/esm/platform/native-source/view.native.js");
	const views = contract.views.map((view) => `export function ${view.name}(props) { return createElement(KotlinSourceView, { source: ${JSON.stringify(sourceId)}, view: ${JSON.stringify(view.name)}, contractHash: ${JSON.stringify(hash)}, props${renderViewWires(view, contract.structs)} }) }`).join("\n");
	if (!exports && !views) {
		throw new Error(`[one] ${id} has no OneModule object or public @Composable function to import`);
	}
	const code = [
		exports && `import { callNativeSource } from ${JSON.stringify(nativeSource)}`,
		needsWire && `import { encodeNativeSourceArgs, decodeNativeSourceResult } from ${JSON.stringify(wireModule)}`,
		needsEvents && `import { subscribeNativeSourceEvent } from ${JSON.stringify(eventsModule)}`,
		(needsWire || needsEvents) && `const nativeSourceStructs = ${JSON.stringify(toNativeSourceStructs(contract.structs))}`,
		views && `import { createElement } from 'react'
import { KotlinSourceView } from ${JSON.stringify(viewHost)}`,
		exports,
		views
	].filter(Boolean).join("\n") + "\n";
	return {
		code,
		watchFiles: [id]
	};
}

export { renderKotlinSourceModule };
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