#!/bin/bash
# Auto-detect HiFiBerry and configure ALSA

echo "=========================================="
echo "HiFiBerry Auto-Configuration"
echo "=========================================="
echo ""

# Find HiFiBerry card number
echo "Detecting HiFiBerry..."
CARD_INFO=$(aplay -l | grep -i hifiberry)

if [ -z "$CARD_INFO" ]; then
    echo "❌ HiFiBerry not found!"
    echo ""
    echo "Make sure:"
    echo "1. HiFiBerry is properly seated on GPIO pins"
    echo "2. /boot/firmware/config.txt has: dtoverlay=hifiberry-dacplusadcpro"
    echo "3. You've rebooted after changing config.txt"
    exit 1
fi

echo "✓ HiFiBerry found:"
echo "$CARD_INFO"
echo ""

# Extract card number
CARD_NUM=$(echo "$CARD_INFO" | grep -oP 'card \K[0-9]+' | head -1)

echo "Card number: $CARD_NUM"
echo ""

# Create ALSA config
echo "Creating ~/.asoundrc..."
cat > ~/.asoundrc << EOF
# ALSA Configuration for HiFiBerry DAC+ADC Pro
# Auto-generated configuration

pcm.!default {
    type asym
    playback.pcm "plughw:${CARD_NUM},0"
    capture.pcm "plughw:${CARD_NUM},0"
}

ctl.!default {
    type hw
    card ${CARD_NUM}
}
EOF

echo "✓ Created ~/.asoundrc with card ${CARD_NUM}"
echo ""

# Show the config
echo "Configuration:"
cat ~/.asoundrc
echo ""

# Set volume
echo "Setting volume to 100%..."
amixer -c ${CARD_NUM} sset Master 100% 2>/dev/null || echo "Master control not available"
amixer -c ${CARD_NUM} sset PCM 100% 2>/dev/null || echo "PCM control not available"
amixer -c ${CARD_NUM} sset Digital 100% 2>/dev/null || echo "Digital control not available"
amixer -c ${CARD_NUM} sset Analogue 100% 2>/dev/null || echo "Analogue control not available"
echo ""

# Test speaker
echo "Testing speaker..."
echo "🔊 Playing test tone - you should hear a beep!"
aplay -D plughw:${CARD_NUM},0 /usr/share/sounds/alsa/Front_Center.wav 2>/dev/null || \
speaker-test -D plughw:${CARD_NUM},0 -c 1 -t sine -f 440 -l 2 2>/dev/null

echo ""
echo "=========================================="
echo "Configuration Complete!"
echo "=========================================="
echo ""
echo "Your HiFiBerry is configured as card ${CARD_NUM}"
echo ""
echo "Test commands:"
echo "  aplay -D plughw:${CARD_NUM},0 /usr/share/sounds/alsa/Front_Center.wav"
echo "  speaker-test -D plughw:${CARD_NUM},0 -c 1 -t wav"
echo ""
echo "For Python script, use device index:"

# Find PyAudio device index
python3 << PYEOF
import pyaudio
audio = pyaudio.PyAudio()
print("")
for i in range(audio.get_device_count()):
    info = audio.get_device_info_by_index(i)
    if 'hifiberry' in info['name'].lower():
        print(f"  PyAudio device index: {i}")
        print(f"  Device name: {info['name']}")
        break
audio.terminate()
PYEOF

echo ""