#!/usr/bin/env bash

# The MIT License (MIT)
#
# Copyright (c) 2015 Adafruit Industries
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

# Project name
IFS='/' read -r -a array <<< "${TRAVIS_REPO_SLUG}"
export LIBRARY_NAME=${array[@]: -1:1}

# Arduino version and IDE path
export ARDUINO_VERSION=1.8.2
export ARDUINO_IDE=$HOME/arduino

# add the arduino CLI to our PATH
export PATH="${ARDUINO_IDE}:${PATH}"

# download and install arduino
wget https://downloads.arduino.cc/arduino-${ARDUINO_VERSION}-linux64.tar.xz
tar xf arduino-${ARDUINO_VERSION}-linux64.tar.xz
mv arduino-${ARDUINO_VERSION} ${ARDUINO_IDE}
rm arduino-${ARDUINO_VERSION}-linux64.tar.xz

# move this library to the arduino libraries folder
ln -s ${TRAVIS_BUILD_DIR} ${ARDUINO_IDE}/libraries/${LIBRARY_NAME}

echo ""
echo "########################################################################"
echo "INSTALLING DEPENDENCIES"
echo "########################################################################"

echo -n "DUE: "
DEPENDENCY_OUTPUT=$(arduino --install-boards arduino:sam 2>&1)
if [ $? -ne 0 ]; then echo -e "\xe2\x9c\x96"; else echo -e "\xe2\x9c\x93"; fi

echo -n "ZERO: "
DEPENDENCY_OUTPUT=$(arduino --install-boards arduino:samd 2>&1)
if [ $? -ne 0 ]; then echo -e "\xe2\x9c\x96"; else echo -e "\xe2\x9c\x93"; fi

# install random lib so the arduino IDE grabs a new library index
# see: https://github.com/arduino/Arduino/issues/3535
echo -n "UPDATE LIBRARY INDEX: "
DEPENDENCY_OUTPUT=$(arduino --install-library USBHost > /dev/null 2>&1)
if [ $? -ne 0 ]; then echo -e "\xe2\x9c\x96"; else echo -e "\xe2\x9c\x93"; fi

# set the maximal compiler warning level
echo -n "SET BUILD PREFERENCES: "
DEPENDENCY_OUTPUT=$(arduino --pref "compiler.warning_level=all" --save-prefs 2>&1)
if [ $? -ne 0 ]; then echo -e "\xe2\x9c\x96"; else echo -e "\xe2\x9c\x93"; fi

# Build all examples for the library
function build_examples() {

  # placeholder for platform
  local platform=${PLATFORM}

  # Track the number of successfully build examples
  local pass_count=0

  # Track the number of examples failed to build
  local fail_count=0

  # Track exit code
  local exit_code=0

  # Grab all pde and ino example sketches
  declare -a examples

  # Loop through results and add them to the array
  examples=($(find $PWD -name "*.pde" -o -name "*.ino"))
  
  echo ""
  echo "########################################################################"
  echo -n "SWITCHING TO ${platform}: "

  # Switch to the requested board.
  # We have to avoid reading the exit code of local:
  # "when declaring a local variable in a function, the local acts as a command in its own right"
  local platform_stdout
  platform_stdout=$(arduino --board $platform --save-prefs 2>&1)

  # Grab the exit status of the arduino board change
  local platform_switch=$?

  # Notify if the platform switch failed
  if [ $platform_switch -ne 0 ]; then print_failure; else print_success; fi
  echo "########################################################################"

  # Bail if the platform switch failed
  if [ $platform_switch -ne 0 ]; then
    echo $platform_stdout
    exit_code=1
    print_results $exit_code $platform $pass_count $fail_count
    exit 1
  fi
  
  # Loop through example sketches
  for example in "${examples[@]}"; do

    # Store the filename for the example without the path
    local example_file=$(basename $example)

    # Print the current example
    echo -n "${example_file}: "

    # Verify the example, and save stdout & stderr to a variable
    # We have to avoid reading the exit code of local:
    # "when declaring a local variable in a function, the local acts as a command in its own right"
    local build_stdout
    build_stdout=$(arduino --verify $example 2>&1)

    # Echo output if the build failed
    if [ $? -ne 0 ]; then
      print_failure

      echo -e "----------------------------- DEBUG OUTPUT -----------------------------\n"
      echo "${build_stdout}"
      echo -e "\n------------------------------------------------------------------------\n"

      # Increment fails
      fail_count=$((fail_count + 1))

      # Mark as fail
      exit_code=1
    else
      print_success

      # Increment passes
      pass_count=$((pass_count + 1))
    fi
  done

  # Print results and exit
  print_results $exit_code $platform $pass_count $fail_count
  return $exit_code
}

# Print a heavy checkmark
function print_success() {
  echo -e "\xe2\x9c\x93"
}

# Print a heavy X
function print_failure() {
  echo -e "\xe2\x9c\x96"
}

# Generate final output
function print_results() {

  # 0: failed, 1: passed
  local status_number=$1

  # The platform
  local platform=$2

  # The number of successfully built examples
  local pass_count=$3

  # The number of examples failed to build
  local fail_count=$4

  # The project origin URL
  local repo=$(git config --get remote.origin.url)

  echo -e "\n||||||||||||||||||||||||||||| JSON STATUS ||||||||||||||||||||||||||||||"

  echo "repo: ${repo}"
  echo "platform: ${platform}"
  echo "status: ${status_number}"
  echo "passed: ${pass_count}"
  echo "failed: ${fail_count}"

  echo -e "||||||||||||||||||||||||||||| JSON STATUS ||||||||||||||||||||||||||||||\n"
}