#!/bin/bash
set -x
set -e
source scripts/config.sh || exit 1

SITE_FOLDER="dist"

function dependency_check {
  if ! command -v $@ &> /dev/null; then
    echo "dependency error: $@ could not be found"
    exit 1
  fi
}

# Check dependencies
dependency_check png2ico
dependency_check convert
dependency_check exiftool
dependency_check optipng
dependency_check jpegoptim

npm run build

cp -r ./scripts/ dist/scripts/

# Git repo setup
mkdir -p "$SITE_FOLDER/repos"
cp -r "$SITE_FOLDER/dotfiles/.git" "$SITE_FOLDER/repos/dotfiles.git"
pushd "$SITE_FOLDER/repos/dotfiles.git"
  git update-server-info
popd

# Render ico file
convert "$SITE_FOLDER/img/me.jpg" -resize 64x64 "$SITE_FOLDER/img/profile_image.jpg"
convert "$SITE_FOLDER/img/me.jpg" -resize 64x64 "$SITE_FOLDER/img/profile_image.png"
png2ico "$SITE_FOLDER/favicon.ico" "$SITE_FOLDER/img/profile_image.png" || {
  echo 'error: failed to make .ico image'
}

# Clear configuration info
sed -ie "s/$S3_BUCKET/s3-bucket-name/g" "$SITE_FOLDER/scripts/config.sh"
sed -ie "s/$DISTRIBUTION_ID/cloudfront-distribution-id/g" "$SITE_FOLDER/scripts/config.sh"

# Alias files to folder/index.html
find "$SITE_FOLDER" -type f ! -iname 'index.html' -iname '*.html' -print0 | while read -d $'\0' f; do
  mkdir -p "${f%.html}"
  cp "$f" "${f%.html}/index.html"
done

mkdir -p .cache

# Find all images
find "$SITE_FOLDER" -type f \( \
     -iname "*.jpg" \
  -o -iname "*.jpeg" \
  -o -iname "*.png" \
  -o -iname "*.gif" \
  -o -iname "*.tiff" \
\) -print0 | while read -d $'\0' f; do

  # Compute names + caches
  HASH="$(shasum -a 256 $f | cut -d' ' -f1)"
  SOURCE_FILENAME="$f"
  CANONICAL_NAME="$(echo $SOURCE_FILENAME | tr "[:lower:]" "[:upper:]")"
  CACHED_FILENAME=".cache/$HASH"

  if [[ ! -f "$CACHED_FILENAME" ]]; then
    cp "$f" "$CACHED_FILENAME"

    # EXIF metadata stripping
    if [[
      "$CANONICAL_NAME" == *.JPG ||
      "$CANONICAL_NAME" == *.JPEG ||
      "$CANONICAL_NAME" == *.PNG ||
      "$CANONICAL_NAME" == *.GIF ||
      "$CANONICAL_NAME" == *.TIFF
    ]]; then
      echo "stripping tags..."
      exiftool -overwrite_original -all= -tagsfromfile @ -Orientation "$CACHED_FILENAME" || exit 1
    fi

    # PNG optmization
    if [[ "$CANONICAL_NAME" == *.PNG ]]; then
      echo "optipng..."
      optipng "$CACHED_FILENAME" || exit 1
    fi

    # JPG optimization
    if [[
      "$CANONICAL_NAME" == *.JPG ||
      "$CANONICAL_NAME" == *.JPEG
    ]]; then
      echo "jpegoptim..."
      jpegoptim --size=200k "$CACHED_FILENAME" || exit 1
    fi
  fi

  # Copy out
  cp "$CACHED_FILENAME" "$SOURCE_FILENAME" || exit 1
done