source

src/backend.ts

@@ -0,0 +1,57 @@
+import { Writer } from 'clitastic'
+
+import { config, VERBOSE } from './autorestic'
+import { Backend, Backends } from './types'
+import { exec } from './utils'
+
+const ALREADY_EXISTS = /(?=.*exists)(?=.*already)(?=.*config).*/
+
+
+export const getPathFromBackend = (backend: Backend): string => {
+	switch (backend.type) {
+		case 'local':
+			return backend.path
+		case 'b2':
+		case 'azure':
+		case 'gs':
+		case 's3':
+			return `${backend.type}:${backend.path}`
+		case 'sftp':
+		case 'rest':
+			throw new Error(`Unsupported backend type: "${backend.type}"`)
+		default:
+			throw new Error(`Unknown backend type.`)
+	}
+}
+
+
+export const getEnvFromBackend = (backend: Backend) => {
+	const { type, path, key, ...rest } = backend
+	return {
+		RESTIC_PASSWORD: key,
+		RESTIC_REPOSITORY: getPathFromBackend(backend),
+		...rest,
+	}
+}
+
+
+export const checkAndConfigureBackend = (name: string, backend: Backend) => {
+	const writer = new Writer(name.blue + ' : ' + 'Configuring... ⏳')
+	const env = getEnvFromBackend(backend)
+
+	const { out, err } = exec('restic', ['init'], { env })
+
+	if (err.length > 0 && !ALREADY_EXISTS.test(err))
+		throw new Error(`Could not load the backend "${name}": ${err}`)
+
+	if (VERBOSE && out.length > 0) console.log(out)
+
+	writer.done(name.blue + ' : ' + 'Done ✓'.green)
+}
+
+
+export const checkAndConfigureBackends = (backends: Backends = config.backends) => {
+	console.log('\nConfiguring Backends'.grey.underline)
+	for (const [name, backend] of Object.entries(backends))
+		checkAndConfigureBackend(name, backend)
+}