#!/bin/sh
set -eu

root_dir=$(cd "$(dirname "$0")" && pwd)
. "$root_dir/../shared/build-lib.sh"

src_html="$root_dir/template.html"
output_dir="$root_dir/dist"
output_html="$output_dir/transmittal.html"

mkdir -p "$output_dir"
ensure_exists "$src_html"
readme_file="$root_dir/README.md"
ensure_exists "$readme_file"

css_temp=$(mktemp)
js_raw=$(mktemp)
js_temp=$(mktemp)
md_temp=$(mktemp)
cleanup() { rm -f "$css_temp" "$js_raw" "$js_temp" "$md_temp"; }
trap cleanup EXIT

# CSS files to concatenate in order
concat_files \
  "../shared/fonts.css" \
  "../shared/base.css" \
  "../shared/toast.css" \
  "../shared/nav.css" \
  "../shared/logo.css" \
  "css/base.css" \
  "css/layout.css" \
  "css/forms.css" \
  "css/table.css" \
  "css/remarks.css" \
  "css/markdown.css" \
  "css/markdown-editor.css" \
  "css/filter.css" \
  "css/modal.css" \
  "css/utilities.css" \
  "css/print.css" \
  > "$css_temp"

# JavaScript files to concatenate in order. Vendored libraries first
# (jszip, docx-preview) so window.JSZip + window.docx are defined before
# any tool code runs — replaces the previous CDN loadLibrary() calls
# scattered through files-preview.js. xlsx stays CDN-loaded on demand.
concat_files \
  "../shared/vendor/jszip.min.js" \
  "../shared/vendor/docx-preview.min.js" \
  "../shared/vendor/xlsx.full.min.js" \
  "../shared/vendor/utif.min.js" \
  "../shared/zddc.js" \
  "../shared/hash.js" \
  "../shared/zddc-source.js" \
  "../shared/theme.js" \
  "../shared/toast.js" \
  "../shared/nav.js" \
  "../shared/logo.js" \
  "../shared/preview-lib.js" \
  "js/app.js" \
  "js/reactive.js" \
  "js/dom.js" \
  "js/util.js" \
  "js/json.js" \
  "js/hydrate.js" \
  "js/state.js" \
  "js/mode.js" \
  "js/visibility.js" \
  "js/live-digest.js" \
  "js/files.js" \
  "js/files-archive.js" \
  "js/files-render.js" \
  "js/files-preview.js" \
  "../shared/zddc-filter.js" \
  "js/filters.js" \
  "js/markdown.js" \
  "js/markdown-editor.js" \
  "js/email-tags.js" \
  "js/validation.js" \
  "js/security.js" \
  "js/verification.js" \
  "js/data.js" \
  "js/publish.js" \
  "js/reset.js" \
  "js/publish-modal.js" \
  "js/logos.js" \
  "js/drop-zones.js" \
  "js/focus.js" \
  "../shared/help.js" \
  "js/main.js" \
  > "$js_raw"

# Escape '</' in JS and the inlined README so neither can prematurely close
# the inline <script> blocks they get embedded in.
escape_js_close_tags "$js_raw" "$js_temp"
escape_js_close_tags "$readme_file" "$md_temp"

compute_build_label "transmittal" "${1:-}" "${2:-}"

awk -v css_file="$css_temp" -v js_file="$js_temp" -v md_file="$md_temp" -v build_label="$build_label" -v is_red="$is_red" -v favicon_uri="$favicon_data_uri" '
  BEGIN {
    css_inserted = 0
    js_inserted = 0
    help_inserted = 0
    in_help = 0
  }
  /<link rel="stylesheet" href="css\// { next }
  /<link rel="stylesheet" href="tailwind-lite\.css"/ { next }
  /<script src="js\// { next }
  /<script src="\.\.\// { next }
  /<script id="help-markdown" type="application\/markdown">/ {
    in_help = 1
    next
  }
  in_help {
    if ($0 ~ /<\/script>/) {
      in_help = 0
    }
    next
  }
  /<head>/ {
    print
    if (!css_inserted) {
      print "<style>"
      while ((getline line < css_file) > 0) print line
      close(css_file)
      print "</style>"
      css_inserted = 1
    }
    next
  }
  /<\/body>/ {
    if (!js_inserted) {
      print "<script>"
      while ((getline line < js_file) > 0) print line
      close(js_file)
      print "</script>"
      js_inserted = 1
    }
    if (!help_inserted) {
      print "<script id=\"help-markdown\" type=\"application/markdown\">"
      while ((getline line < md_file) > 0) print line
      close(md_file)
      print "</script>"
      help_inserted = 1
    }
    print
    next
  }
  /\{\{BUILD_LABEL\}\}/ {
    if (is_red == "1") {
      gsub(/\{\{BUILD_LABEL\}\}/, "<span style=\"color:red;font-weight:bold\">" build_label "</span>")
    } else {
      gsub(/\{\{BUILD_LABEL\}\}/, build_label)
    }
    print
    next
  }
  /\{\{FAVICON\}\}/ {
    gsub(/\{\{FAVICON\}\}/, favicon_uri)
    print
    next
  }
  { print }
  END {
    if (!css_inserted) {
      print "<style>"
      while ((getline line < css_file) > 0) print line
      close(css_file)
      print "</style>"
    }
    if (!js_inserted) {
      print "<script>"
      while ((getline line < js_file) > 0) print line
      close(js_file)
      print "</script>"
    }
    if (!help_inserted) {
      print "<script id=\"help-markdown\" type=\"application/markdown\">"
      while ((getline line < md_file) > 0) print line
      close(md_file)
      print "</script>"
    }
  }
' "$src_html" > "$output_html"

echo "Wrote $output_html"

if [ "$is_release" = "1" ]; then
    promote_release "transmittal"
fi
