janus

A tiny CLI translator. Translates between English and Russian using one of two pluggable providers.

Build

go build -o janus ./cmd

Usage

janus hello                      # → привет   (default provider: lara)
janus --provider=mymemory hello  # use MyMemory instead
janus привет                     # direction is auto-detected from the input

The first letter decides direction: Latin → en→ru, otherwise ru→en.

Providers

Name	Auth	Notes
lara	required (account access keys)	Default. Uses the official Lara Go SDK.
mymemory	optional (anonymous works)	HTTP only.

Configuration

All configuration is via environment variables.

Variable	Used by	Required	Purpose
JANUS_PROVIDER	janus	no	Default provider when --provider isn't passed.
LARA_ACCESS_KEY_ID	lara	yes	Lara access key ID.
LARA_ACCESS_KEY_SECRET	lara	yes	Lara access key secret.
MYMEMORY_BASE_URL	mymemory	no	Override API endpoint (defaults to the public service).
MYMEMORY_API_KEY	mymemory	no	Authenticate the request; empty = anonymous.

Precedence for provider selection: --provider flag > JANUS_PROVIDER env > compiled-in default (lara).

Credentials are loaded lazily — picking mymemory does not require Lara keys to be set, and vice versa.

Layout

cmd/            # CLI entry: flags, wiring, exit codes
internal/
  translate/    # Translator interface
  lara/         # Lara provider (SDK-backed)
  mymemory/     # MyMemory provider (HTTP)
  config/       # env-based config loaders

Adding a provider: implement translate.Translator in a new package and add a case to newTranslator in cmd/main.go.