#!/bin/bash
##########################################################################
# ovos-i2csound
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
##########################################################################

# Define a list of valid boards
declare -A boards=(
    [RPI3]="Pi 3"
    [RPI4]="Pi 4"
    [RPI5]="Pi 5"
)

declare board_result

# Define a list of device names and their I2C addresses
declare -A devices=(
    [WM8XXX]=1a
    [RESPEAKER4]=3b
    [RESPEAKER6]=35
    [ADAFRUIT]=4b
    [TAS5806]=2f
    [SJ201LED]=04
    [AIYVOICEBONNET]=52
)

declare -A detection_results

# Detects the presence of an I2C device at the specified address range
detect_i2c_device() {
    local address="0x$1"
    if i2cdetect -y -a 1 "$address" "$address" | grep -qE "($1|UU)"; then
        return 0  # true
    else
        return 1  # false
    fi
}

# Gets the board version
get_board_version() {
    v=$(tr -d '\0' </proc/device-tree/model)
    for board in "${!boards[@]}"; do
        b="${boards[$board]}"
        if [[ $v =~ "$b" ]]; then
            board_result="$board"
            break # Exit the loop once the match is found.
        fi
    done
}

# Main execution
main() {

    get_board_version

    # Detecting I2C devices
    for device in "${!devices[@]}"; do
        address="${devices[$device]}"
        if detect_i2c_device "$address"; then
            detection_results[$device]=true
        else
            detection_results[$device]=false
        fi
        echo "$device detection result: ${detection_results[$device]}"
    done

    # Handling hardware-specific configurations
    if [[ ${detection_results[WM8XXX]} == true ]] ; then
        echo "WM8XXX based HAT found"
        atmega328p=$(avrdude -p atmega328p -C /etc/avrdude-gpio.conf -c linuxgpio -U signature:r:-:i -F 2>/dev/null | head -n1)
        if [ "${atmega328p}" == ":030000001E950F3B" ] ; then
            detection_results[MARK1]=true
            echo "Mark-1 enclosure $MARK1"
        else
            detection_results[WM8960]=true
            echo "WM8960 based 2-mic $WM8960"
        fi
    fi

    if [[ ${detection_results[WM8960]} == true ]] && [[ ${detection_results[RESPEAKER4]} == false ]] ; then
        echo "Installing and configuring WM8960 based 2-mic HAT"
        dtoverlay wm8960-soundcard
        echo "Configuring board"
        sleep 3 # Allow some time to fully initialise the hardware / driver
        amixer -c "wm8960soundcard" cset numid=1 34,34
        amixer -c "wm8960soundcard" cset numid=26 3
        amixer -c "wm8960soundcard" cset numid=27 4
        amixer -c "wm8960soundcard" cset numid=30 5
        amixer -c "wm8960soundcard" cset numid=32 5
        amixer -c "wm8960soundcard" cset numid=33 5
        amixer -c "wm8960soundcard" cset numid=34 25
        amixer -c "wm8960soundcard" cset numid=35 on
        amixer -c "wm8960soundcard" cset numid=9 3
        amixer -c "wm8960soundcard" cset numid=8 3
        amixer -c "wm8960soundcard" cset numid=49 on
        amixer -c "wm8960soundcard" cset numid=51 on
        amixer -c "wm8960soundcard" cset numid=37 0
        amixer -c "wm8960soundcard" cset numid=38 0
        amixer -c "wm8960soundcard" cset numid=39 5
        amixer -c "wm8960soundcard" cset numid=48 on
        amixer -c "wm8960soundcard" cset numid=50 on
        amixer -c "wm8960soundcard" cset numid=54 on
        amixer -c "wm8960soundcard" cset numid=16 5
        amixer -c "wm8960soundcard" cset numid=15 4
        amixer -c "wm8960soundcard" cset numid=11 120,120
        amixer -c "wm8960soundcard" cset numid=13 120,120
        echo "Configuring button"
        dtoverlay wm8960-button-overlay
    fi

    if [[ ${detection_results[MARK1]} == true ]] ; then
        echo "Installing and configuring WM8731 based sound HAT"
        dtoverlay proto-codec
        echo "Configuring board"
        sleep 3 # Allow some time to fully initialise the hardware / driver
        amixer -c "sndrpiproto" cset numid=1 107,107
        amixer -c "sndrpiproto" cset numid=2 on
        amixer -c "sndrpiproto" cset numid=6 on
        amixer -c "sndrpiproto" cset numid=10 on
        amixer -c "sndrpiproto" cset numid=14 1
        amixer -c "sndrpiproto" cset numid=13 on
        amixer -c "sndrpiproto" cset numid=9 on
        echo "Resetting Mark-1 faceplate"
        echo "eyes.color=7365993" > /dev/ttyAMA0  # color=soft gray, #706569
        echo "mouth.text=" > /dev/ttyAMA0
    fi

    if [[ ${detection_results[RESPEAKER4]} == true ]] && [[ ${detection_results[RESPEAKER6]} == false ]] ; then
        echo "Installing and configuring ReSpeaker 4-mic"
        dtoverlay seeed-4mic-voicecard
        echo "Configuring board"
        sleep 3 # Allow some time to fully initialise the hardware / driver
        amixer -c "seeed4micvoicec" cset numid=1 222
        amixer -c "seeed4micvoicec" cset numid=2 222
        amixer -c "seeed4micvoicec" cset numid=3 222
        amixer -c "seeed4micvoicec" cset numid=4 222
        if [[ $board_result == "RPI3" ]]; then
            amixer -c "seeed4micvoicec" cset numid=5 3
            amixer -c "seeed4micvoicec" cset numid=6 3
            amixer -c "seeed4micvoicec" cset numid=7 3
            amixer -c "seeed4micvoicec" cset numid=8 3
        else
            amixer -c "seeed4micvoicec" cset numid=5 13
            amixer -c "seeed4micvoicec" cset numid=6 13
            amixer -c "seeed4micvoicec" cset numid=7 13
            amixer -c "seeed4micvoicec" cset numid=8 13
        fi
    fi

    if [[ ${detection_results[RESPEAKER6]} == true ]] && [[ ${detection_results[RESPEAKER4]} == true ]] ; then
        echo "Installing and configuring ReSpeaker 6mic"
        dtoverlay seeed-8mic-voicecard
        echo "Configuring board"
        sleep 3 # Allow some time to fully initialise the hardware / driver
        amixer -c "seeed8micvoicec" cset numid=1 208
        amixer -c "seeed8micvoicec" cset numid=2 208
        amixer -c "seeed8micvoicec" cset numid=3 208
        amixer -c "seeed8micvoicec" cset numid=4 208
        amixer -c "seeed8micvoicec" cset numid=5 13
        amixer -c "seeed8micvoicec" cset numid=6 13
        amixer -c "seeed8micvoicec" cset numid=7 13
        amixer -c "seeed8micvoicec" cset numid=8 13
        amixer -c "seeed8micvoicec" cset numid=9 208
        amixer -c "seeed8micvoicec" cset numid=10 208
        amixer -c "seeed8micvoicec" cset numid=11 208
        amixer -c "seeed8micvoicec" cset numid=12 208
        amixer -c "seeed8micvoicec" cset numid=13 13
        amixer -c "seeed8micvoicec" cset numid=14 13
        amixer -c "seeed8micvoicec" cset numid=15 13
        amixer -c "seeed8micvoicec" cset numid=16 13
    fi

    if [[ ${detection_results[ADAFRUIT]} == true ]] ; then
        echo "Installing and configuring Adafruit"
        /usr/sbin/i2cset -y 1 0x4b 30 # Set maximum volume to 30
    fi

    if [[ ${detection_results[TAS5806]} == true ]] ; then
        echo "Installing and configuring SJ-201 HAT"
        # Initializing XMOS xvf3510 based SJ-201 HAT
        if [[ "$board_result" == "RPI5" ]]; then
            dtoverlay sj201-pi5
        else
            dtoverlay sj201
            echo "Configuring board"
            sleep 3 # Allow some time to fully initialise the hardware / driver
        fi
        xvf3510-flash --direct "/usr/lib/firmware/xvf3510/app_xvf3510_int_spi_boot_v4_2_0.bin"
        # Initializing Texas Instruments 5806 Amplifier
        /usr/bin/tas5806-init
        if [[ ${detection_results[SJ201LED]} == true ]] ; then
            echo "Found revision-6 SJ-201 board"
            # Initializing and resetting LED ring
            /usr/bin/sj201-reset-led
            # Reset FAN to low speed
            /usr/sbin/i2cset -a -y 1 0x04 101 30 i
        else
            echo "Assume revision-10 SJ-201 board"
            if [[ "$board_result" == "RPI5" ]]; then
                dtoverlay sj201-rev10-pwm-fan-overlay-pi5
            else
                dtoverlay sj201-rev10-pwm-fan-overlay
            fi
        fi
        echo "Configuring buttons"
        if [[ "$board_result" == "RPI5" ]]; then
            dtoverlay sj201-buttons-overlay-pi5
        else
            dtoverlay sj201-buttons-overlay
        fi
    fi

    if [[ ${detection_results[AIYVOICEBONNET]} == true ]] ; then
        echo "Installing and configuring AIY VoiceBonnet"
        dtoverlay aiy-voicebonnet
        echo "Configuring board"
        sleep 3 # Allow some time to fully initialise the hardware / driver
        amixer -c "aiyvoicebonnet" cset numid=10 80,80
        amixer -c "aiyvoicebonnet" cset numid=58 on
        amixer -c "aiyvoicebonnet" cset numid=60 on
        amixer -c "aiyvoicebonnet" cset numid=65 on
        amixer -c "aiyvoicebonnet" cset numid=67 on
        amixer -c "aiyvoicebonnet" cset numid=101 on
        amixer -c "aiyvoicebonnet" cset numid=105 on
        amixer -c "aiyvoicebonnet" cset numid=109 on
        amixer -c "aiyvoicebonnet" cset numid=110 on
        amixer -c "aiyvoicebonnet" cset numid=116 on
        amixer -c "aiyvoicebonnet" cset numid=25 on
        amixer -c "aiyvoicebonnet" cset numid=5 75
        amixer -c "aiyvoicebonnet" cset numid=83 on
        amixer -c "aiyvoicebonnet" cset numid=87 on
        amixer -c "aiyvoicebonnet" cset numid=99 on
        amixer -c "aiyvoicebonnet" cset numid=100 on
        amixer -c "aiyvoicebonnet" cset numid=112 on
        amixer -c "aiyvoicebonnet" cset numid=114 on
        amixer -c "aiyvoicebonnet" cset numid=26 on
        amixer -c "aiyvoicebonnet" cset numid=1 on
        amixer -c "aiyvoicebonnet" cset numid=2 75
        amixer -c "aiyvoicebonnet" cset numid=16 65,65
        amixer -c "aiyvoicebonnet" cset numid=19 1,1
        amixer -c "aiyvoicebonnet" cset numid=31 on
        amixer -c "aiyvoicebonnet" cset numid=35 on
        amixer -c "aiyvoicebonnet" cset numid=47 on
        amixer -c "aiyvoicebonnet" cset numid=49 on
        amixer -c "aiyvoicebonnet" cset numid=27 on
    fi
}

# Run the main function
main