#!/bin/bash

SLED_ID=$1
SERVICE_NAME="xyz.openbmc_project.Inventory.Manager"
PRESENT_OBJPATH="/xyz/openbmc_project/inventory/system/chassis/presence/presence_sled${SLED_ID}"
DBUS_PROPERTY_INTF="org.freedesktop.DBus.Properties"

bind_i2c_driver()
{
    I2C_BUS_ADDR=$1
    DRIVER_NAME=$2
    DRIVER_DIR="/sys/bus/i2c/drivers/${DRIVER_NAME}"
    if [ ! -e "${DRIVER_DIR}/${I2C_BUS_ADDR}" ]; then
        echo "${I2C_BUS_ADDR}" > "${DRIVER_DIR}"/bind
    fi
}

unbind_i2c_driver()
{
    I2C_BUS_ADDR=$1
    DRIVER_NAME=$2
    DRIVER_DIR="/sys/bus/i2c/drivers/${DRIVER_NAME}"
    if [ -e "${DRIVER_DIR}/${I2C_BUS_ADDR}" ]; then
        echo "${I2C_BUS_ADDR}" > "${DRIVER_DIR}"/unbind
    fi
}

sled_insert_action()
{
    SLED_ID=$1
    I2C_BUS_NUM=$((SLED_ID-1))

    # 0022: fusb302
    bind_i2c_driver "${I2C_BUS_NUM}-0022" "typec_fusb302"

    # 0045: ina230
    bind_i2c_driver "${I2C_BUS_NUM}-0045" "ina2xx"

    # 0040: mp5023
    bind_i2c_driver "${I2C_BUS_NUM}-0040" "mp5023"

    # 0041: pca9536
    bind_i2c_driver "${I2C_BUS_NUM}-0041" "pca953x"

    # 0076: pca9539
    bind_i2c_driver "${I2C_BUS_NUM}-0076" "pca953x"

    # 004f: tmp421
    bind_i2c_driver "${I2C_BUS_NUM}-004f" "tmp421"

    # 0067: pca9552
    bind_i2c_driver "${I2C_BUS_NUM}-0067" "leds-pca955x"

    # 0054: 24c64
    bind_i2c_driver "${I2C_BUS_NUM}-0054" "at24"

    # start bletchley-sled-insertion target
    /bin/systemctl start bletchley-sled-insertion@"${SLED_ID}".target
}

sled_remove_action()
{
    SLED_ID=$1
    I2C_BUS_NUM=$((SLED_ID-1))

    # 0022: fusb302
    unbind_i2c_driver "${I2C_BUS_NUM}-0022" "typec_fusb302"

    # # 0045: ina230
    # unbind_i2c_driver "${I2C_BUS_NUM}-0045" "ina2xx"

    # # 0040: mp5023
    # unbind_i2c_driver "${I2C_BUS_NUM}-0040" "mp5023"

    # # 0041: pca9536
    # unbind_i2c_driver "${I2C_BUS_NUM}-0041" "pca953x"

    # # 0076: pca9539
    # unbind_i2c_driver "${I2C_BUS_NUM}-0076" "pca953x"

    # # 004f: tmp421
    # unbind_i2c_driver "${I2C_BUS_NUM}-004f" "tmp421"

    # # 0067: pca9552
    # unbind_i2c_driver "${I2C_BUS_NUM}-0067" "leds-pca955x"

    # # 0054: 24c64
    # unbind_i2c_driver "${I2C_BUS_NUM}-0054" "at24"

    # start bletchley-sled-removal target
    /bin/systemctl start bletchley-sled-removal@"${SLED_ID}".target
}


dbus-monitor --system "type=signal,interface=${DBUS_PROPERTY_INTF},sender=${SERVICE_NAME},path=${PRESENT_OBJPATH}" |
while read -r line; do
    case "$line" in
        *"boolean false"*)
            echo "SLED${SLED_ID} Removal"
            sled_remove_action "$SLED_ID"
            ;;
        *"boolean true"*)
            echo "SLED${SLED_ID} Insertion"
            sled_insert_action "$SLED_ID"
            ;;
    esac
done

exit 0