module.exports = function (RED) {
    "use strict";

    function WooCommerceOrderNode(config) {
        RED.nodes.createNode(this, config);
        const node = this;

        node.configNode = RED.nodes.getNode(config.config);
        if (!node.configNode) { node.error("No woocommerce-config node configured"); return; }

        node.operation = config.operation || "list";
        node.status({ fill: "blue", shape: "ring", text: "ready" });

        function doRequest(method, path, body, msg, done) {
            node.status({ fill: "yellow", shape: "dot", text: method + " " + path });
            node.configNode.sendRequest(method, path, body, {}, function (err, result) {
                if (err) { node.status({ fill: "red", shape: "ring", text: "error" }); done ? done(err) : node.error(err, msg); return; }
                msg.payload = result.body;
                msg.statusCode = result.statusCode;
                msg.woocommerce = result;
                node.status({ fill: "green", shape: "dot", text: result.statusCode });
                done();
            });
        }

        function buildListParams(msg) {
            const p = new URLSearchParams();
            if (msg.status) p.append("status", msg.status);
            if (msg.after) p.append("after", msg.after);
            if (msg.before) p.append("before", msg.before);
            if (msg.customer) p.append("customer", msg.customer);
            if (msg.product) p.append("product", msg.product);
            if (msg.limit) p.append("per_page", msg.limit);
            if (msg.page) p.append("page", msg.page);
            if (msg.order) p.append("order", msg.order);
            if (msg.orderby) p.append("orderby", msg.orderby);
            return p.toString() ? "?" + p.toString() : "";
        }

        node.on("input", function (msg, send, done) {
            const op = msg.operation || node.operation;
            switch (op) {
                case "list": {
                    doRequest("GET", "/orders" + buildListParams(msg), undefined, msg, done);
                    break;
                }
                case "get": {
                    const id = msg.orderId || msg.payload;
                    if (!id) { node.error("Missing orderId"); done && done(new Error("Missing orderId")); return; }
                    doRequest("GET", "/orders/" + encodeURIComponent(id), undefined, msg, done);
                    break;
                }
                case "updateStatus": {
                    const id = msg.orderId || (msg.payload && msg.payload.id);
                    const status = msg.status || msg.newStatus;
                    if (!id || !status) { node.error("Missing orderId or status"); done && done(new Error("Missing orderId or status")); return; }
                    doRequest("PUT", "/orders/" + encodeURIComponent(id), { status }, msg, done);
                    break;
                }
                case "addNote": {
                    const id = msg.orderId || (msg.payload && msg.payload.id);
                    const note = msg.note || msg.noteText || (msg.payload && msg.payload.note);
                    if (!id || !note) { node.error("Missing orderId or note"); done && done(new Error("Missing orderId or note")); return; }
                    doRequest("POST", "/orders/" + encodeURIComponent(id) + "/notes", { note, customer_note: msg.customerNote || false }, msg, done);
                    break;
                }
                case "getNotes": {
                    const id = msg.orderId || (msg.payload && msg.payload.id);
                    if (!id) { node.error("Missing orderId"); done && done(new Error("Missing orderId")); return; }
                    doRequest("GET", "/orders/" + encodeURIComponent(id) + "/notes", undefined, msg, done);
                    break;
                }
                default: {
                    const err = new Error("Unknown operation: " + op);
                    node.error(err);
                    if (done) done(err);
                }
            }
        });
    }

    RED.nodes.registerType("woocommerce-order", WooCommerceOrderNode);
};