.env.example

# ============================================================================
# Accessible Math Reader — Environment Configuration
# ============================================================================
# Copy this file to .env and customise as needed.
#
# All variables are optional — sensible defaults are applied.
# ============================================================================

# ── Server ─────────────────────────────────────────────────────────────────
AMR_PORT=8000
AMR_MAX_REQUEST_SIZE=1048576

# ── Logging ────────────────────────────────────────────────────────────────
# Format: "json" for structured logs, "text" for human-readable
AMR_LOG_FORMAT=text
# Level: DEBUG, INFO, WARNING, ERROR
AMR_LOG_LEVEL=INFO

# ── Speech Engine ──────────────────────────────────────────────────────────
# Options: gtts (default, needs internet), espeak, pyttsx3, coqui
AMR_SPEECH_ENGINE=gtts

# ── Metrics (Prometheus) ──────────────────────────────────────────────────
# Set to "true" to enable the /metrics endpoint
AMR_METRICS=false

# ── Tracing (OpenTelemetry) ──────────────────────────────────────────────
AMR_TRACING=false
AMR_SERVICE_NAME=amr

# ── Authentication ────────────────────────────────────────────────────────
# Set to "true" to require X-API-Key header on API endpoints
AMR_ENABLE_AUTH=false
# Comma-separated list of valid API keys
AMR_API_KEYS=

# ── Rate Limiting ─────────────────────────────────────────────────────────
# Set to "true" to enable per-IP rate limiting on API endpoints
AMR_ENABLE_RATE_LIMIT=false
# Format: "<count>/<period>" where period is second/minute/hour/day
AMR_RATE_LIMIT=100/minute