import type {
  DeviceHealth,
  PrinterDevice,
  PrintReport,
  ReceiptData,
  SubscriptionCardData,
  TicketData,
  WindowChargeNoticeData,
} from "../interfaces.js";
import type { ConfigField, DeviceConfig, PrinterDriver } from "../registry.js";
import { hostField, portField, stubLog } from "./common.js";
import {
  devicePathField,
  probeTo,
  renderReceipt,
  renderReport,
  renderSubscriptionCard,
  renderTicket,
  renderWindowChargeNotice,
  sendTo,
  transportField,
  transportFromConfig,
  type Transport,
} from "./printer-escpos.js";

// GENERIC ESC/POS 80mm thermal printer driver (network OR USB) — any clone that
// PRINTS the shared ESC/POS byte stream (see ./printer-escpos.ts) but serves no
// Rongta-style decoded status page (/prn_stat.htm). Verified fits: Cashino (the
// first unit we drove — the driver carried its name until 2026-07-06), ICS/Xprinter
// XP-K200L. Tickets, reports and subscription cards render identically to the
// Rongta, over either transport; what these clones can NOT do is report paper-out /
// cover-open / cutter faults in a form we trust.
//
// TRANSPORT: a single `config.transport` ("tcp-ip" | "usb") picks the wire; the
// driver resolves it ONCE into a Transport and every print/probe stays transport-
// blind (see transportFromConfig/sendTo/probeTo). USB writes the same bytes to a
// local usblp char device (/dev/usb/lp0); TCP writes to the raw print socket. This
// clone family is the natural USB candidate — reachability-only, no page to lose.
//
// Therefore this driver deliberately does NOT implement MonitorableDevice
// (no readStatus). The device monitor then falls back to the generic
// `healthCheck()` — a plain TCP reachability PING of the print socket. So the
// booth footer shows this printer as "ready" when it's reachable and "offline"
// when it isn't, and never a wrong paper/cover verdict it cannot actually sense.
// (Reusing the Rongta driver made it scrape a status page these clones don't
// serve, producing the bogus "degraded" feedback this driver fixes.)
//
// No auth on the print socket — like the other field devices it lives on the
// isolated device VLAN. Roles + failover work exactly as for the Rongta
// (entry-dispenser / booth-receipt + failoverRank); the server owns selection.
// See wiki/concepts/printer-status-monitoring.md and printer-roles-failover.md.

class GenericEscposPrinter implements PrinterDevice {
  readonly driverId = "escpos";
  readonly #transport: Transport;
  readonly #timeout: number;

  constructor(config: DeviceConfig) {
    this.#transport = transportFromConfig(config);
    this.#timeout = config.timeoutMs ? Number(config.timeoutMs) : 3000;
  }

  async connect(): Promise<void> {
    await this.healthCheck();
  }

  async disconnect(): Promise<void> {
    stubLog(this.driverId, "disconnect");
  }

  /**
   * Reachability only — a connect probe (TCP) or char-device open probe (USB) of
   * the print path. These clones have no trustworthy status protocol, so this is the
   * floor and the ceiling of what we report: reachable → ready, unreachable →
   * offline. Deliberately NO readStatus(): the monitor uses this for the
   * traffic-light, never a guessed paper/cover state.
   */
  async healthCheck(): Promise<DeviceHealth> {
    try {
      await probeTo(this.#transport, this.#timeout);
      return { status: "ready" };
    } catch (err) {
      return { status: "offline", detail: (err as Error).message };
    }
  }

  async printTicket(data: TicketData): Promise<void> {
    await sendTo(this.#transport, renderTicket(data), this.#timeout);
    stubLog(this.driverId, `printed ticket ${data.ticketId}`);
  }

  async printReport(report: PrintReport): Promise<void> {
    await sendTo(this.#transport, renderReport(report), this.#timeout);
    stubLog(
      this.driverId,
      `printed report "${report.title}" (${report.lines.length} lines)`,
    );
  }

  async printSubscriptionCard(data: SubscriptionCardData): Promise<void> {
    await sendTo(this.#transport, renderSubscriptionCard(data), this.#timeout);
    stubLog(this.driverId, `printed subscription card ${data.code}`);
  }

  async printReceipt(data: ReceiptData): Promise<void> {
    await sendTo(this.#transport, renderReceipt(data), this.#timeout);
    stubLog(
      this.driverId,
      `printed ${data.voucher ? "voucher" : "receipt"} ${data.ticketId}`,
    );
  }

  async printWindowChargeNotice(data: WindowChargeNoticeData): Promise<void> {
    await sendTo(this.#transport, renderWindowChargeNotice(data), this.#timeout);
    stubLog(this.driverId, `printed out-of-window slip ${data.occurrenceId}`);
  }
}

const roleField: ConfigField = {
  key: "role",
  label: "Role",
  type: "select",
  required: true,
  default: "entry-dispenser",
  options: [
    {
      value: "entry-dispenser",
      label: "Entry dispenser (outside / at the lane)",
    },
    { value: "booth-receipt", label: "Booth printer (receipts + backup)" },
    { value: "wash-desk", label: "Wash desk printer (Car Wash till slips)" },
  ],
  help: "Entry tickets print on the entry dispenser, falling back to the booth printer if it is offline. The wash desk's Z-reports and vouchers print on the wash desk printer, falling back to the booth printer.",
};

const rankField: ConfigField = {
  key: "failoverRank",
  label: "Failover rank",
  type: "number",
  required: false,
  default: 0,
  help: "Higher = tried first within the same role. The booth printer also backs up the entry dispenser.",
};

export const escposDriver: PrinterDriver = {
  // Renamed from id "cashino" (the first clone we drove) on 2026-07-06 — the vendor
  // name was misleading in the setup UI once other clones (ICS/Xprinter XP-K200L)
  // used it. Stored configs with driverId "cashino" still resolve via the registry
  // alias + are rewritten by migration 0023.
  id: "escpos",
  category: "printer",
  label: "Generic ESC/POS 80mm printer (Cashino, ICS/Xprinter…)",
  description:
    "Generic ESC/POS 80mm thermal printer over raw TCP (port 9100) OR local USB /dev/usb/lp0 — Cashino, ICS/Xprinter XP-K200L, and similar clones. Prints like the Rongta but has no status page — monitored by reachability only (no paper/cover/cutter reporting). No auth on the print socket — isolate the VLAN.",
  transports: ["tcp-ip", "usb"],
  configFields: [
    transportField,
    devicePathField,
    // host/port are TCP-only; not required because a USB printer needs neither.
    { ...hostField, required: false, help: `${hostField.help} Leave blank for a USB printer.` },
    {
      ...portField(9100),
      required: false,
      help: "Raw print socket (ESC/POS over JetDirect/RAW, default 9100). TCP only.",
    },
    roleField,
    rankField,
    {
      key: "timeoutMs",
      label: "Timeout (ms)",
      type: "number",
      required: false,
      default: 3000,
    },
  ],
  create: (c) => new GenericEscposPrinter(c),
};