#!/usr/bin/env bash

set -e

# Parse parameter:
# - `e` - Parameter for `esphome` command. Default `compile`. Common alternative is `config`.
# - `c` - Component folder name to test. Default `*`.
esphome_command="compile"
target_component="*"
while getopts e:c: flag
do
    case $flag in
        e) esphome_command=${OPTARG};;
        c) target_component=${OPTARG};;
        \?) echo "Usage: $0 [-e <config|compile|clean>] [-c <string>]" 1>&2; exit 1;;
    esac
done

cd "$(dirname "$0")/.."

if ! [ -d "./tests/test_build_components/build" ]; then
  mkdir ./tests/test_build_components/build
fi

start_esphome() {
  # create dynamic yaml file in `build` folder.
  # `./tests/test_build_components/build/[target_component].[test_name].[target_platform].yaml`
  component_test_file="./tests/test_build_components/build/$target_component.$test_name.$target_platform.yaml"

  cp $target_platform_file $component_test_file
  if [[ "$OSTYPE" == "darwin"* ]]; then
    # macOS sed is...different
    sed -i '' "s!\$component_test_file!../../.$f!g" $component_test_file
  else
    sed -i "s!\$component_test_file!../../.$f!g" $component_test_file
  fi

  # Start esphome process
  echo "> [$target_component] [$test_name] [$target_platform]"
  echo "esphome -s component_name $target_component -s component_dir ../../components/$target_component -s test_name $test_name -s target_platform $target_platform $esphome_command $component_test_file"
  # TODO: Validate escape of Command line substitution value
  esphome -s component_name $target_component -s component_dir ../../components/$target_component -s test_name $test_name -s target_platform $target_platform $esphome_command $component_test_file
}

# Find all test yaml files.
# - `./tests/components/[target_component]/[test_name].[target_platform].yaml`
# - `./tests/components/[target_component]/[test_name].all.yaml`
for f in ./tests/components/$target_component/*.*.yaml; do
  [ -f "$f" ] || continue
  IFS='/' read -r -a folder_name <<< "$f"
  target_component="${folder_name[3]}"

  IFS='.' read -r -a file_name <<< "${folder_name[4]}"
  test_name="${file_name[0]}"
  target_platform="${file_name[1]}"
  file_name_parts=${#file_name[@]}

  if [ "$target_platform" = "all" ] || [ $file_name_parts = 2 ]; then
    # Test has *not* defined a specific target platform. Need to run tests for all possible target platforms.
    
    for target_platform_file in ./tests/test_build_components/build_components_base.*.yaml; do
      IFS='/' read -r -a folder_name <<< "$target_platform_file"
      IFS='.' read -r -a file_name <<< "${folder_name[3]}"
      target_platform="${file_name[1]}"

      start_esphome
    done

  else
    # Test has defined a specific target platform.
  
    # Validate we have a base test yaml for selected platform.
    # The target_platform is sourced from the following location.
    # 1. `./tests/test_build_components/build_components_base.[target_platform].yaml`
    # 2. `./tests/test_build_components/build_components_base.[target_platform]-ard.yaml`
    target_platform_file="./tests/test_build_components/build_components_base.$target_platform.yaml"
    if ! [ -f "$target_platform_file" ]; then
      # Try find arduino test framework as platform.
      target_platform_ard="$target_platform-ard"
      target_platform_file="./tests/test_build_components/build_components_base.$target_platform_ard.yaml"
      if ! [ -f "$target_platform_file" ]; then
        echo "No base test file [./tests/test_build_components/build_components_base.$target_platform.yaml, ./tests/build_components_base.$target_platform_ard.yaml] for component test [$f] found."
        exit 1
      fi
      target_platform=$target_platform_ard
    fi

    start_esphome
  fi
done