#!/usr/bin/env bash
set -euo pipefail

adb_bin="${ADB_BIN:-adb}"
expected_fingerprint='hp/t7h/pine:4.1.1/JRO03H/v1.05.18_user:user/release-keys'
expected_kernel='3.0.8+'
serial="${1:-}"

if ! command -v "$adb_bin" >/dev/null 2>&1; then
    echo "adb not found. Set ADB_BIN=/absolute/path/to/adb." >&2
    exit 1
fi

adb_args=()
if [[ -n "$serial" ]]; then
    adb_args=(-s "$serial")
fi

fingerprint="$($adb_bin "${adb_args[@]}" shell getprop ro.build.fingerprint | tr -d '\r')"
kernel="$($adb_bin "${adb_args[@]}" shell cat /proc/sys/kernel/osrelease | tr -d '\r')"
model="$($adb_bin "${adb_args[@]}" shell getprop ro.product.model | tr -d '\r')"
sdk="$($adb_bin "${adb_args[@]}" shell getprop ro.build.version.sdk | tr -d '\r')"

printf 'Model:       %s\nFingerprint: %s\nKernel:      %s\nSDK:         %s\n' \
    "$model" "$fingerprint" "$kernel" "$sdk"

if [[ "$fingerprint" != "$expected_fingerprint" || "$kernel" != "$expected_kernel" ]]; then
    echo "REFUSED: this target does not match the verified device." >&2
    exit 2
fi

echo "Target matches the verified HP Slate 7 2800 firmware."