#!/bin/bash
set -e

# Auto-generate SECRET_KEY if not provided so the app boots out-of-the-box
# without requiring the user to create backend/.env first. Persists in the
# data volume so JWTs survive container restarts.
if [ -z "$SECRET_KEY" ]; then
    SECRET_FILE="${DATA_DIR:-/app/data}/.secret_key"
    mkdir -p "$(dirname "$SECRET_FILE")"
    if [ ! -f "$SECRET_FILE" ]; then
        echo "🔑 No SECRET_KEY provided — generating one (saved to $SECRET_FILE)"
        head -c 48 /dev/urandom | base64 | tr -d '\n' > "$SECRET_FILE"
    fi
    export SECRET_KEY="$(cat "$SECRET_FILE")"
fi

# Ensure arduino-cli config and board manager URLs are set up
if [ ! -f /root/.arduino15/arduino-cli.yaml ]; then
    echo "📦 Initializing arduino-cli config..."
    arduino-cli config init 2>/dev/null || true
    arduino-cli config add board_manager.additional_urls \
        https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json 2>/dev/null || true
    arduino-cli config add board_manager.additional_urls \
        https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json 2>/dev/null || true
    # ATTinyCore (Spence Konde) — needed for ATtiny85 FQBNs.
    # Without this URL `core install ATTinyCore:avr` fails with
    #   "Platform 'ATTinyCore:avr' not found: platform not installed".
    # See https://github.com/SpenceKonde/ATTinyCore
    arduino-cli config add board_manager.additional_urls \
        http://drazzy.com/package_drazzy.com_index.json 2>/dev/null || true
    # STM32duino (STMicroelectronics:stm32) — needed for STM32 Blue/Black Pill
    # FQBNs. Without this URL `core install STMicroelectronics:stm32` fails with
    #   "Platform 'STMicroelectronics:stm32' not found: platform not installed".
    arduino-cli config add board_manager.additional_urls \
        https://github.com/stm32duino/BoardManagerFiles/raw/main/package_stmicroelectronics_index.json 2>/dev/null || true
fi

# Install missing cores.
# ESP32 core MUST be 2.0.17 (IDF 4.4.x) — newer 3.x is incompatible with QEMU ROM bins.
arduino-cli core update-index 2>/dev/null || true
arduino-cli core install arduino:avr 2>/dev/null || true
arduino-cli core install rp2040:rp2040 2>/dev/null || true
arduino-cli core install ATTinyCore:avr@1.4.1 2>/dev/null || true
arduino-cli core install STMicroelectronics:stm32 2>/dev/null || true

# ESP32 compilation now uses ESP-IDF instead of arduino-cli.
# arduino-cli ESP32 core is no longer needed for QEMU-compatible builds.
# If ESP-IDF is not available, fall back to arduino-cli ESP32 core.
if [ -f /opt/esp-idf/export.sh ]; then
    echo "🔧 Sourcing ESP-IDF environment..."
    . /opt/esp-idf/export.sh || true
    echo "✅ ESP-IDF $(cat /opt/esp-idf/version.txt 2>/dev/null || echo 'unknown') ready"
else
    echo "⚠️  ESP-IDF not found — falling back to arduino-cli for ESP32"
    ESP32_VER=$(arduino-cli core list 2>/dev/null | grep esp32:esp32 | awk '{print $2}')
    if [ -z "$ESP32_VER" ]; then
        echo "📦 Installing ESP32 core 2.0.17..."
        arduino-cli core install esp32:esp32@2.0.17
    elif [[ "$ESP32_VER" != 2.0.17 ]]; then
        echo "⚠️  ESP32 core is $ESP32_VER, need 2.0.17 — reinstalling..."
        arduino-cli core install esp32:esp32@2.0.17
    fi
fi

# Start FastAPI backend in the background on port 8001
echo "🚀 Starting Velxio Backend..."
uvicorn app.main:app --host 127.0.0.1 --port 8001 &
UVICORN_PID=$!

# Wait for backend to be healthy before starting nginx
sleep 2

# Start Nginx in the background (not exec — we need to monitor both)
echo "🌐 Starting Nginx Web Server on port 80..."
nginx -g "daemon off;" &
NGINX_PID=$!

# Exit as soon as either process dies so Docker can restart the container.
# wait -n requires bash 4.3+ (standard on Debian Bullseye / Ubuntu 20.04+).
wait -n $UVICORN_PID $NGINX_PID
EXIT_CODE=$?

echo "⚠️  A process exited (code $EXIT_CODE) — shutting down container"
kill $UVICORN_PID $NGINX_PID 2>/dev/null || true
wait $UVICORN_PID $NGINX_PID 2>/dev/null || true
exit $EXIT_CODE