#!/bin/bash

set -e

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

echo "// The contents of this file are generated by ./lib/EpdFont/scripts/build-font-ids.sh"
echo "#pragma once"
echo ""

echo "#define BOOKERLY_12_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./bookerly_12_regular.h",
  "./bookerly_12_bold.h",
  "./bookerly_12_bolditalic.h",
  "./bookerly_12_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define BOOKERLY_14_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./bookerly_14_regular.h",
  "./bookerly_14_bold.h",
  "./bookerly_14_bolditalic.h",
  "./bookerly_14_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define BOOKERLY_16_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./bookerly_16_regular.h",
  "./bookerly_16_bold.h",
  "./bookerly_16_bolditalic.h",
  "./bookerly_16_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define BOOKERLY_18_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./bookerly_18_regular.h",
  "./bookerly_18_bold.h",
  "./bookerly_18_bolditalic.h",
  "./bookerly_18_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define NOTOSANS_12_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./notosans_12_regular.h",
  "./notosans_12_bold.h",
  "./notosans_12_bolditalic.h",
  "./notosans_12_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define NOTOSANS_14_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./notosans_14_regular.h",
  "./notosans_14_bold.h",
  "./notosans_14_bolditalic.h",
  "./notosans_14_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define NOTOSANS_16_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./notosans_16_regular.h",
  "./notosans_16_bold.h",
  "./notosans_16_bolditalic.h",
  "./notosans_16_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define NOTOSANS_18_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./notosans_18_regular.h",
  "./notosans_18_bold.h",
  "./notosans_18_bolditalic.h",
  "./notosans_18_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define OPENDYSLEXIC_8_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./opendyslexic_8_regular.h",
  "./opendyslexic_8_bold.h",
  "./opendyslexic_8_bolditalic.h",
  "./opendyslexic_8_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define OPENDYSLEXIC_10_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./opendyslexic_10_regular.h",
  "./opendyslexic_10_bold.h",
  "./opendyslexic_10_bolditalic.h",
  "./opendyslexic_10_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define OPENDYSLEXIC_12_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./opendyslexic_12_regular.h",
  "./opendyslexic_12_bold.h",
  "./opendyslexic_12_bolditalic.h",
  "./opendyslexic_12_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define OPENDYSLEXIC_14_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./opendyslexic_14_regular.h",
  "./opendyslexic_14_bold.h",
  "./opendyslexic_14_bolditalic.h",
  "./opendyslexic_14_italic.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define UI_10_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./ubuntu_10_regular.h",
  "./ubuntu_10_bold.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define UI_12_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./ubuntu_12_regular.h",
  "./ubuntu_12_bold.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

echo "#define SMALL_FONT_ID ($(
ruby -rdigest -e 'puts [
  "./notosans_8_regular.h",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
))"

# Custom font sizes (must match convert-builtin-fonts.sh)
CUSTOM_FONT_SIZES=(12 14 16 18)

# Generate font IDs for all custom fonts
echo ""
echo "// Custom font IDs"

CUSTOM_DIR="./custom"
declare -a CUSTOM_FONT_NAMES=()
declare -a CUSTOM_FONT_UPPERCASE=()

if [ -d "$CUSTOM_DIR" ]; then
  for font_dir in "$CUSTOM_DIR"/*/; do
    if [ -d "$font_dir" ]; then
      font_folder_name=$(basename "$font_dir")
      font_name_lower=$(echo "$font_folder_name" | tr '[:upper:]' '[:lower:]')
      font_name_upper=$(echo "$font_folder_name" | tr '[:lower:]' '[:upper:]')
      
      # Check if font headers exist (Regular is required)
      if [ -f "./custom/${font_name_lower}_12_regular.h" ]; then
        CUSTOM_FONT_NAMES+=("$font_name_lower")
        CUSTOM_FONT_UPPERCASE+=("$font_name_upper")
        
        for size in ${CUSTOM_FONT_SIZES[@]}; do
          font_id=$(ruby -rdigest -e "puts [
  \"./custom/${font_name_lower}_${size}_regular.h\",
  \"./custom/${font_name_lower}_${size}_bold.h\",
  \"./custom/${font_name_lower}_${size}_bolditalic.h\",
  \"./custom/${font_name_lower}_${size}_italic.h\",
].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)")
          echo "#define ${font_name_upper}_${size}_FONT_ID ($font_id)"
        done
      fi
    fi
  done
fi

# Generate CUSTOM_FONT_IDS lookup array
echo ""
echo "// Custom font ID lookup array: CUSTOM_FONT_IDS[fontIndex][sizeIndex]"
echo "// Size indices: 0=12pt, 1=14pt, 2=16pt, 3=18pt"

if [ ${#CUSTOM_FONT_NAMES[@]} -gt 0 ]; then
  echo "static const int CUSTOM_FONT_IDS[][4] = {"
  for i in "${!CUSTOM_FONT_UPPERCASE[@]}"; do
    font_upper="${CUSTOM_FONT_UPPERCASE[$i]}"
    echo "  {${font_upper}_12_FONT_ID, ${font_upper}_14_FONT_ID, ${font_upper}_16_FONT_ID, ${font_upper}_18_FONT_ID},"
  done
  echo "};"
else
  echo "static const int CUSTOM_FONT_IDS[][4] = {};"
fi