#!/usr/bin/env bash
# oai-transcribe - Transcribe audio files using OpenAI Whisper API
# Usage: oai-transcribe <audio-file> [language]
#
# Requires: OPENAI_API_KEY environment variable
# Language: en, es, fr, etc. (default: en)

set -euo pipefail

# Parse arguments
AUDIO="${1:-}"
LANG="${2:-en}"

# Validate arguments
if [[ -z "$AUDIO" ]]; then
  echo "Usage: oai-transcribe <audio-file> [language]" >&2
  echo "Example: oai-transcribe meeting.m4a en" >&2
  exit 1
fi

if [[ ! -f "$AUDIO" ]]; then
  echo "Error: Audio file not found: $AUDIO" >&2
  exit 1
fi

# Check API key is set
if [[ -z "${OPENAI_API_KEY:-}" ]]; then
  echo "Error: OPENAI_API_KEY environment variable not set" >&2
  echo "Set with: export OPENAI_API_KEY='sk-...'" >&2
  exit 1
fi

# Check curl is available
if ! command -v curl &> /dev/null; then
  echo "Error: curl command not found" >&2
  exit 1
fi

# Call OpenAI API
curl -s -X POST "https://api.openai.com/v1/audio/transcriptions" \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -F "model=whisper-1" \
  -F "response_format=text" \
  -F "language=${LANG}" \
  -F "file=@${AUDIO}"