#!/bin/bash
# Emergency patch for lodash.template@4.18.x only. Skip when overrides pin 4.5.0.
# Run after npm install on Linux/Mac if needed.

if [ -f "node_modules/lodash.template/package.json" ]; then
  VER=$(node -p "require('./node_modules/lodash.template/package.json').version" 2>/dev/null || echo "")
  case "$VER" in
    4.5.*) echo "✓ lodash.template is $VER; skip manual patch"; exit 0 ;;
  esac
fi

LODGASH_TEMPLATE="node_modules/lodash.template/index.js"

if [ ! -f "$LODGASH_TEMPLATE" ]; then
    echo "❌ lodash.template not found. Please run npm install or yarn install first."
    exit 1
fi

# Check if already patched with v2
if grep -q "LODASH_TEMPLATE_PATCHED_V2" "$LODGASH_TEMPLATE"; then
    echo "✓ lodash.template already patched with v2"
    exit 0
fi

# Remove old patch if exists
if grep -q "LODASH_TEMPLATE_PATCHED" "$LODGASH_TEMPLATE"; then
    echo "🔄 Removing old patch..."
    # Use sed to remove old patch (multi-line)
    sed -i '/\/\* LODASH_TEMPLATE_PATCHED \*\//,/^}$/d' "$LODGASH_TEMPLATE"
fi

echo "🔧 Patching lodash.template with v2..."

# Create a temporary file with the patch
PATCH='/* LODASH_TEMPLATE_PATCHED_V2 */
// assignWith polyfill for lodash.template - Fixed version
function assignWith(object, source, customizer) {
  if (object == null) return object;
  if (typeof customizer !== "function") {
    customizer = function(objValue, srcValue) {
      return srcValue;
    };
  }
  var props = Object.keys(Object(source));
  for (var i = 0; i < props.length; i++) {
    var key = props[i];
    var value = source[key];
    var assignedValue = customizer(object[key], value, key, object, source);
    if (assignedValue !== undefined) {
      object[key] = assignedValue;
    }
  }
  return object;
}
'

# Insert after the first line (license comment)
{ 
    head -n 1 "$LODGASH_TEMPLATE"
    echo "$PATCH"
    tail -n +2 "$LODGASH_TEMPLATE"
} > "$LODGASH_TEMPLATE.tmp" && mv "$LODGASH_TEMPLATE.tmp" "$LODGASH_TEMPLATE"

echo "✅ Successfully patched lodash.template with assignWith function (v2)"