#!/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/classifier.html"

mkdir -p "$output_dir"
ensure_exists "$src_html"

css_temp=$(mktemp)
js_raw=$(mktemp)
js_temp=$(mktemp)
cleanup() { rm -f "$css_temp" "$js_raw" "$js_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/spreadsheet.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 <script src="cdn..."> tag in
# template.html plus the loadLibrary CDN calls in preview.js. xlsx stays
# CDN-loaded on demand (~900 KB; too large to inline).
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/utils.js" \
  "../shared/zddc-filter.js" \
  "js/store.js" \
  "js/validator.js" \
  "js/scanner.js" \
  "js/tree.js" \
  "js/spreadsheet.js" \
  "js/selection.js" \
  "js/preview.js" \
  "js/resize.js" \
  "js/filter.js" \
  "js/sort.js" \
  "js/excel.js" \
  "../shared/help.js" \
  > "$js_raw"

# Escape '</' in inlined JS so the HTML parser cannot mistake string contents
# for a closing </script> tag. Required for any tool with template literals.
escape_js_close_tags "$js_raw" "$js_temp"

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

# Process template: inject CSS/JS, substitute build label, strip CDN refs.
awk -v css_file="$css_temp" -v js_file="$js_temp" -v build_label="$build_label" -v is_red="$is_red" -v favicon_uri="$favicon_data_uri" '
  /\{\{CSS_PLACEHOLDER\}\}/ {
    while ((getline line < css_file) > 0) print line
    close(css_file)
    next
  }
  /\{\{JS_PLACEHOLDER\}\}/ {
    while ((getline line < js_file) > 0) print line
    close(js_file)
    next
  }
  /\{\{BUILD_LABEL\}\}/ {
    if (is_red == "1") {
      gsub(/\{\{BUILD_LABEL\}\}/, "<span style=\"color:red;font-weight:bold\">" build_label "</span>")
    } else {
      gsub(/\{\{BUILD_LABEL\}\}/, build_label)
    }
    print
    next
  }
  /\{\{FAVICON\}\}/ {
    gsub(/\{\{FAVICON\}\}/, favicon_uri)
    print
    next
  }
  /<script src="https?:\/\// { next }
  /<link rel="stylesheet" href="https?:\/\// { next }
  { print }
' "$src_html" > "$output_html"

echo "Wrote $output_html"

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