#!/bin/bash -eu
# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Generate a new yaml file for each specified hwid_*.bmp file.
#

# Do initial release locales only, 'cause I'm in a hurry. GB == US.
locales="en es fr it nl de"
localedir="./localized_bitmaps"

# Arbitrary padding
ypad=5
xpad=10
yborder=40


# Stuff to center and position bitmaps from the bottom of the screen upwards.

# Globals
cur_x=0
cur_y=0


# Return width of the specified .bmp file
get_x() {
  file $1 | awk '{print $7}'
}

get_xx() {
  local ffile=$(eval "echo \$$1")
  get_x $ffile
}

# Return height of the specified .bmp file
get_y() {
  file $1 | awk '{print $9}'
}

# Return height of the specified .bmp file
get_yy() {
  local ffile=$(eval "echo \$$1")
  get_y $ffile
}


# Guess the locale based on the filename, set a global "newlocales" list
# accordingly.
guess_locale() {
  local lc
  local islc
  local matches
  islc=

  matches=0
  for lc in $locales; do
    case "$1" in
      *[_-]${lc}_* )
        matches=$(expr $matches + 1)
        islc=$lc
        ;;
    esac
  done
  if (( $matches != 1 )); then
    islc='en'
  fi

  local newlist
  newlist="$islc"
  for lc in $locales; do
    if [ "$lc" != "$islc" ]; then
      newlist="$newlist $lc"
    fi
  done

  newlocales=$newlist
}


# Reset the current baseline and width to the size of the specified .bmp file
reset_base() {
  cur_x=$(get_x "$1")
  cur_y=$(expr $(get_y $1) - $yborder)
}

# Emit a screen line entry centering the given .bmp files at the current
# baseline. We assume that all args are the same height.
center_up() {
  local totalx
  local totaly
  local x
  local ffile

  totaly=$(get_yy "$1")
  cur_y=$(expr $cur_y - $totaly - $ypad)

  totalx=$(expr 0 - $xpad / 2)
  for fname in "$@"; do
    totalx=$(expr $totalx + $(get_xx $fname) + $xpad)
  done

  x=$(expr "(" $cur_x - $totalx ")" / 2)

  for fname in $*; do
    echo "    - [$x, $cur_y, $fname]" >> "$yaml_file"
    x=$(expr $x + $(get_xx $fname) + $xpad)
  done
}


# Generate a new yaml file for each specified hwid_*.bmp file.
for hwid_bmp in "$@"; do
  yaml_file=$(echo $(basename "$hwid_bmp" .bmp) | tr 'A-Z' 'a-z').yaml
  echo "$yaml_file"

  # List the images. The major difference is the HWID.
  cat >"$yaml_file" <<EOF1
bmpblock: 1.0

compression: 1

images:

  # The HWID must change for every BOM
  hwid:              $hwid_bmp

  # This URL never changes
  url:               URL.bmp

  # The background images are from the UI people
  devmode_bg:        Devmode.bmp
  remove_bg:         Remove.bmp
  yuck_bg:           Yuck.bmp
  insert_bg:         Insert.bmp

  # The following strings must be approved by the localization people
EOF1

  # some global variables matching the yaml definitions
  hwid=$hwid_bmp
  url="URL.bmp"

  # Enumerate the bitmaps for each locale-specific string.
  for lc in $locales; do
    cat >>"$yaml_file" <<EOF2
  ${lc}_model_text:       ${localedir}/$lc/model.bmp
  ${lc}_devmode_text:     ${localedir}/$lc/devmode.bmp
  ${lc}_remove_text:      ${localedir}/$lc/remove.bmp
  ${lc}_yuck_text:        ${localedir}/$lc/yuck.bmp
  ${lc}_insert_text:      ${localedir}/$lc/insert.bmp

EOF2

    # Also define global variables matching those in the yaml file.
    eval "${lc}_model_text=${localedir}/$lc/model.bmp"
    eval "${lc}_devmode_text=${localedir}/$lc/devmode.bmp"
    eval "${lc}_remove_text=${localedir}/$lc/remove.bmp"
    eval "${lc}_yuck_text=${localedir}/$lc/yuck.bmp"
    eval "${lc}_insert_text=${localedir}/$lc/insert.bmp"
  done

  # List the screens. We need to composite four screens for each locale.
  echo "screens:" >> "$yaml_file"

  for lc in $locales; do
    echo "  ${lc}_devel:" >> "$yaml_file"
    echo "    - [  0,   0, devmode_bg]" >> "$yaml_file"
    reset_base Devmode.bmp
    center_up "${lc}_devmode_text"
    echo "" >> "$yaml_file"

    echo "  ${lc}_remove:" >> "$yaml_file"
    echo "    - [  0,   0, remove_bg]" >> "$yaml_file"
    reset_base Remove.bmp
    center_up "${lc}_model_text" "hwid"
    center_up "url"
    center_up "${lc}_remove_text"
    echo "" >> "$yaml_file"

    echo "  ${lc}_yuck:" >> "$yaml_file"
    echo "    - [  0,   0, yuck_bg]" >> "$yaml_file"
    reset_base Yuck.bmp
    center_up "${lc}_model_text" "hwid"
    center_up "url"
    center_up "${lc}_yuck_text"
    echo "" >> "$yaml_file"

    echo "  ${lc}_insert:" >> "$yaml_file"
    echo "    - [  0,   0, insert_bg]" >> "$yaml_file"
    reset_base Insert.bmp
    center_up "${lc}_model_text" "hwid"
    center_up "url"
    center_up "${lc}_insert_text"
    echo "" >> "$yaml_file"

  done


  # Finally list the localizations.

  cat >>"$yaml_file" <<EOF2
localizations:

  # This determines the order in which the localizations appear. The first
  # one is the default.

EOF2

  # Let's try to use the native one first, if we can.
  guess_locale "$yaml_file"

  for lc in $newlocales; do
    echo "  - [ ${lc}_devel, ${lc}_remove, ${lc}_yuck, ${lc}_insert ]" >> \
      "$yaml_file"
  done

done