use env var to specify config path

Author: Maarten-Dekker

packages/vite-plugin-tempest/src/config.test.ts

@@ -1,16 +1,23 @@
+import fs from 'node:fs'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
 import { expect, test } from 'vitest'
 import { loadTempestConfiguration } from './config'
 import { mockTempestConfiguration } from './test-utils'
 
 test('the configuration can be loaded', async () => {
-	mockTempestConfiguration()
+	const spy = mockTempestConfiguration()
 
-	const config = await loadTempestConfiguration()
+	try {
+		const config = await loadTempestConfiguration()
 
-	expect(config).toHaveProperty('build_directory')
-	expect(config).toHaveProperty('bridge_file_name')
-	expect(config).toHaveProperty('manifest')
-	expect(config).toHaveProperty('entrypoints')
+		expect(config).toHaveProperty('build_directory')
+		expect(config).toHaveProperty('bridge_file_name')
+		expect(config).toHaveProperty('manifest')
+		expect(config).toHaveProperty('entrypoints')
+	} finally {
+		spy.mockRestore()
+	}
 })
 
 test('the configuration can be overriden', async () => {
@@ -28,3 +35,29 @@ test('the configuration can be overriden', async () => {
 	expect(config).toHaveProperty('manifest')
 	expect(config).toHaveProperty('entrypoints')
 })
+
+test('the configuration can be loaded from a file path environment variable', async () => {
+	const __dirname = path.dirname(fileURLToPath(import.meta.url))
+	const tempConfigPath = path.join(__dirname, 'tempest-vite.test.json')
+	const mockConfig = {
+		build_directory: 'build/from-file',
+		bridge_file_name: 'test-bridge',
+		manifest: 'test-manifest.json',
+		entrypoints: ['resources/js/test.js'],
+	}
+
+	try {
+		fs.writeFileSync(tempConfigPath, JSON.stringify(mockConfig))
+		process.env.TEMPEST_PLUGIN_CONFIGURATION_PATH = tempConfigPath
+
+		const config = await loadTempestConfiguration()
+
+		expect(config.build_directory).toBe('build/from-file')
+		expect(config.bridge_file_name).toBe('test-bridge')
+		expect(config.manifest).toBe('test-manifest.json')
+		expect(config.entrypoints).toEqual(['resources/js/test.js'])
+	} finally {
+		fs.rmSync(tempConfigPath, { force: true })
+		delete process.env.TEMPEST_PLUGIN_CONFIGURATION_PATH
+	}
+})

packages/vite-plugin-tempest/src/config.ts

@@ -1,10 +1,26 @@
+import { readFileSync } from 'node:fs'
+import { resolve } from 'node:path'
 import type { TempestViteConfiguration } from './types'
 import { exec, php } from './utils'
 
 const TEMPEST_BIN = 'tempest'
 const VITE_CONFIG_COMMAND = 'vite:config'
 
 export async function loadTempestConfiguration(): Promise<TempestViteConfiguration> {
+	const path = process.env.TEMPEST_PLUGIN_CONFIGURATION_PATH
+	if (path) {
+		try {
+			const filePath = resolve(process.cwd(), path)
+			const fileContent = readFileSync(filePath, 'utf-8')
+
+			return JSON.parse(fileContent)
+		} catch (e) {
+			console.error(`[vite-plugin-tempest] Error: Failed to read or parse the file at [${path}].`)
+
+			throw e
+		}
+	}
+
 	try {
 		const override = process.env.TEMPEST_PLUGIN_CONFIGURATION_OVERRIDE
 		if (override) {