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#!/usr/bin/env bash
# Build the lesson's category tree through the Magento REST API:
#   Default Category (root, ID 2) > Travel Gear (anchor) > Backpacks (+ products by SKU)
# usage: STORE=https://www.example.com ADMIN_USER=youradmin ./magento-create-categories.sh
# Needs curl and jq. Asks for the admin password and the 6-digit code from your authenticator app
# (Magento 2.4 admin accounts use two-factor authentication).
set -euo pipefail
STORE=${STORE:?set STORE, e.g. https://www.example.com}
ADMIN_USER=${ADMIN_USER:?set ADMIN_USER}
ROOT_ID=${ROOT_ID:-2}                                    # Default Category
SKUS=${SKUS:-"24-WB03 24-WB06 24-MB02 24-MB03"}          # Luma sample backpacks
CURL=(curl -sS --fail-with-body ${INSECURE:+-k})         # INSECURE=1 for a self-signed test certificate

read -rsp "Admin password: " PASS; echo
read -rp  "Authenticator code: " OTP
TOKEN=$("${CURL[@]}" -X POST "$STORE/rest/V1/tfa/provider/google/authenticate" -H 'Content-Type: application/json' \
  -d "$(jq -n --arg u "$ADMIN_USER" --arg p "$PASS" --arg o "$OTP" '{username:$u,password:$p,otp:$o}')" | jq -r .)
API() { "${CURL[@]}" -X "$1" "$STORE/rest/all/V1/$2" -H "Authorization: Bearer $TOKEN" -H 'Content-Type: application/json' ${3:+-d "$3"}; }

new_category() {   # name parent url_key [meta_title] -> prints the new ID
  API POST categories "$(jq -n --arg n "$1" --argjson p "$2" --arg k "$3" --arg m "${4:-}" '{category:{
    name:$n, parent_id:$p, is_active:true, include_in_menu:true,
    custom_attributes:([{attribute_code:"url_key",value:$k},{attribute_code:"is_anchor",value:"1"}]
      + (if $m == "" then [] else [{attribute_code:"meta_title",value:$m}] end))}}')" | jq -r .id
}

PARENT=$(new_category "Travel Gear" "$ROOT_ID" travel-gear "Travel Gear: Bags and Backpacks")
echo "Travel Gear: ID $PARENT"
CHILD=$(new_category "Backpacks" "$PARENT" backpacks)
echo "Backpacks:   ID $CHILD"
for sku in $SKUS; do
  API POST "categories/$CHILD/products" "$(jq -n --arg s "$sku" --argjson c "$CHILD" '{productLink:{sku:$s,category_id:$c,position:0}}')" >/dev/null
  echo "  + $sku"
done
echo "Done. Open $STORE/travel-gear/backpacks.html (the menu shows it after the next cron run or a cache flush)."