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

    function WooCommerceCustomerNode(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 || "search";

        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" });
                    if (done) done(err);
                    else 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();
            });
        }

        node.on("input", function (msg, send, done) {
            const op = msg.operation || node.operation;

            switch (op) {
                case "search": {
                    const params = new URLSearchParams();
                    if (msg.email) params.append("email", msg.email);
                    if (msg.limit) params.append("per_page", msg.limit);
                    if (msg.page) params.append("page", msg.page);
                    const qs = params.toString();
                    doRequest("GET", "/customers" + (qs ? "?" + qs : ""), undefined, msg, done);
                    break;
                }
                case "get": {
                    const id = msg.customerId || msg.payload;
                    if (!id) { node.error("Missing customerId"); if (done) done(new Error("Missing customerId")); return; }
                    doRequest("GET", "/customers/" + encodeURIComponent(id), undefined, msg, done);
                    break;
                }
                case "create": {
                    const body = msg.payload && typeof msg.payload === "object" ? msg.payload : {
                        email: msg.email || "",
                        first_name: msg.firstname || msg.firstName || "",
                        last_name: msg.lastname || msg.lastName || "",
                        username: msg.username || "",
                        billing: msg.billing || {},
                        shipping: msg.shipping || {}
                    };
                    doRequest("POST", "/customers", body, msg, done);
                    break;
                }
                default: {
                    const err = new Error("Unknown operation: " + op);
                    node.error(err);
                    if (done) done(err);
                }
            }
        });
    }

    RED.nodes.registerType("woocommerce-customer", WooCommerceCustomerNode);
};