"use client";

import { useEffect, useMemo, useState } from "react";
import { useForm, useFieldArray, type UseFormRegister } from "react-hook-form";
import { useRouter, useSearchParams } from "next/navigation";

/* ────────────────────────────────────────────────────────────
 * Types
 * ──────────────────────────────────────────────────────────── */
export type Target =
| "settings_fiber"
| "settings_co2gan"
| "settings_co2gal"
| "settings_uv";

type Opt = { id: string; label: string };

type Me = {
  id: string;
  username?: string;
  display_name?: string;
  first_name?: string;
  last_name?: string;
  email?: string;
};

export type FormValues = {
  setting_title: string;
  setting_notes?: string;

  // files (id string or File at the UI level)
  photo?: string | File | null;
  screen?: string | File | null;

  // relations / numerics
  mat?: any;
  mat_coat?: any;
  mat_color?: any;
  mat_opacity?: any;
  mat_thickness?: number | null;
  source?: any;
  lens?: any;
  focus?: number | null;

  // flags
  laser_soft?: string | null;
  repeat_all?: number | null;

  // repeaters
  fill_settings: any[];
  line_settings: any[];
  raster_settings: any[];
};

type CreateProps = {
  mode?: "create";                 // default
  initialTarget?: Target;
  initialValues?: Partial<FormValues>;
  onSaved?: (id: string | number) => void;
};

type EditProps = {
  mode: "edit";
  initialTarget: Target;           // locked target
  submissionId: string | number;   // external submission_id
  initialValues: FormValues;       // full snapshot to edit
  onSaved?: (id: string | number) => void;
};

export type SettingsSubmitProps = CreateProps | EditProps;

/* ──────────────────────────────────────────────────────────── */

const API = (process.env.NEXT_PUBLIC_API_BASE_URL || "").replace(/\/$/, "");

// Local enums (no schema introspection)
const FILL_TYPE_OPTIONS = [
  { label: "UniDirectional", value: "uni" },
{ label: "BiDirectional", value: "bi" },
{ label: "Offset Fill", value: "offset" },
];

const RASTER_TYPE_OPTIONS = [
  { label: "UniDirectional", value: "uni" },
{ label: "BiDirectional", value: "bi" },
{ label: "Offset Fill", value: "offset" },
];

const RASTER_DITHER_OPTIONS = [
  { label: "Threshold", value: "threshold" },
{ label: "Ordered", value: "ordered" },
{ label: "Atkinson", value: "atkinson" },
{ label: "Dither", value: "dither" },
{ label: "Stucki", value: "stucki" },
{ label: "Jarvis", value: "jarvis" },
{ label: "Newsprint", value: "newsprint" },
{ label: "Halftone", value: "halftone" },
{ label: "Sketch", value: "sketch" },
{ label: "Grayscale", value: "grayscale" },
];

const toOpts = (arr: { label: string; value: string }[]): Opt[] =>
arr.map((x) => ({ id: x.value, label: x.label }));

function shortId(s?: string) {
  if (!s) return "";
  return s.length <= 12 ? s : `${s.slice(0, 8)}…${s.slice(-4)}`;
}

/* ────────────────────────────────────────────────────────────
 * Options helpers
 * ──────────────────────────────────────────────────────────── */
function useOptions(path: string) {
  const [opts, setOpts] = useState<Opt[]>([]);
  const [loading, setLoading] = useState(false);
  const [q, setQ] = useState("");

  // helpers for the "laser_source" nm filtering
  const parseNum = (v: any): number | null => {
    if (v == null) return null;
    const m = String(v).match(/(\d+(\.\d+)?)/);
    return m ? Number(m[1]) : null;
  };

  const nmRangeFor = (target?: string | null): [number, number] | null => {
    if (!target) return null;
    const t = target.toLowerCase();
    if (t === "fiber") return [1000, 9000];
    if (t === "uv") return [300, 400];
    if (t === "co2-gantry" || t === "co2-galvo") return [10000, 11000];
    return null;
  };

  useEffect(() => {
    let alive = true;
    setLoading(true);

    (async () => {
      const [rawPath, qs] = path.split("?", 2);
      const params = new URLSearchParams(qs || "");
      const target = params.get("target") || "";

      let url = "";
      let normalize: (rows: any[]) => Opt[] = (rows) =>
      rows.map((r) => ({
        id: String(r.id),
                       label: String(r.name ?? r.label ?? r.title ?? r.value ?? r.id),
      }));

      if (rawPath === "material") {
        url = `${API}/items/material?fields=id,name&limit=1000&sort=name`;
      } else if (rawPath === "material_color") {
        url = `${API}/items/material_color?fields=id,name&limit=1000&sort=name`;
      } else if (rawPath === "material_coating") {
        url = `${API}/items/material_coating?fields=id,name&limit=1000&sort=name`;
      } else if (rawPath === "material_opacity") {
        url = `${API}/items/material_opacity?fields=id,opacity&limit=1000&sort=opacity`;
        normalize = (rows) => rows.map((r) => ({ id: String(r.id), label: String(r.opacity ?? r.id) }));
      } else if (rawPath === "laser_software") {
        url = `${API}/items/laser_software?fields=id,name&limit=1000&sort=name`;
      } else if (rawPath === "laser_source") {
        // fetch all and client-filter by nm
        url = `${API}/items/laser_source?fields=submission_id,make,model,nm&limit=2000&sort=make,model`;
        const range = nmRangeFor(target);
        normalize = (rows) => {
          const filtered = range
          ? rows.filter((r: any) => {
            const nm = parseNum(r.nm);
            return nm != null && nm >= range[0] && nm <= range[1];
          })
          : rows;
          return filtered.map((r: any) => ({
            id: String(r.submission_id),
                                           label: [r.make, r.model].filter(Boolean).join(" ") || String(r.submission_id),
          }));
        };
      } else if (rawPath === "lens") {
        // CO2 gantry uses focus lenses; all others use scan lenses
        if (target === "co2-gantry") {
          url = `${API}/items/laser_focus_lens?fields=id,name&limit=1000`;
          normalize = (rows) => rows.map((r) => ({ id: String(r.id), label: String(r.name ?? r.id) }));
        } else {
          // SCAN LENSES (fiber, uv, co2-galvo): sort numerically by focal_length
          url = `${API}/items/laser_scan_lens?fields=id,field_size,focal_length&limit=1000`;
          normalize = (rows) => {
            const toNum = (v: any) => {
              const m = String(v ?? "").match(/-?\d+(\.\d+)?/);
              return m ? parseFloat(m[0]) : Number.POSITIVE_INFINITY;
            };
            const sorted = [...rows].sort((a, b) => toNum(a.focal_length) - toNum(b.focal_length));
            return sorted.map((r) => {
              const fs = r.field_size != null ? `${r.field_size}` : "";
              const fl = r.focal_length != null ? `${r.focal_length}` : "";
              const composed = [fs && `${fs} mm`, fl && `${fl} mm`].filter(Boolean).join(" — ");
              return { id: String(r.id), label: composed || String(r.id) };
            });
          };
        }
      } else {
        // unknown path → empty
        setOpts([]);
        setLoading(false);
        return;
      }

      const res = await fetch(url, { cache: "no-store", credentials: "include" });
      if (!res.ok) throw new Error(`Directus ${res.status} fetching ${url}`);
      const json = await res.json();
      const rows = json?.data ?? [];
      const mapped = normalize(rows);

      // client-side text filter
      const needle = (q || "").trim().toLowerCase();
      const filtered = needle ? mapped.filter((o) => o.label.toLowerCase().includes(needle)) : mapped;

      if (alive) setOpts(filtered);
    })()
    .catch(() => alive && setOpts([]))
    .finally(() => alive && setLoading(false));

    return () => {
      alive = false;
    };
  }, [path, q]);

  return { opts, loading, setQ };
}

/* ────────────────────────────────────────────────────────────
 * Small inputs
 * ──────────────────────────────────────────────────────────── */
function FilterableSelect({
  label,
  name,
  register,
  options,
  loading,
  onQuery,
  placeholder = "—",
  required = false,
}: {
  label: string;
  name: string;
  register: UseFormRegister<any>;
  options: Opt[];
  loading?: boolean;
  onQuery?: (q: string) => void;
  placeholder?: string;
  required?: boolean;
}) {
  const [filter, setFilter] = useState("");
  useEffect(() => {
    onQuery?.(filter);
  }, [filter, onQuery]);

  const filtered = useMemo(() => {
    if (!filter) return options;
    const f = filter.toLowerCase();
    return options.filter((o) => o.label.toLowerCase().includes(f));
  }, [options, filter]);

  return (
    <div>
    <label className="block text-sm mb-1">
    {label} {required ? <span className="text-red-600">*</span> : null}
    </label>
    <input
    className="w-full border rounded px-2 py-1 mb-1"
    placeholder="Type to filter…"
    value={filter}
    onChange={(e) => setFilter(e.target.value)}
    />
    <select className="w-full border rounded px-2 py-1" {...register(name, { required })}>
    <option value="">{placeholder}{loading ? " (loading…)" : ""}</option>
    {filtered.map((o) => (
      <option key={o.id} value={o.id}>
      {o.label}
      </option>
    ))}
    </select>
    </div>
  );
}

function BoolBox({ label, name, register }: { label: string; name: string; register: UseFormRegister<any> }) {
  return (
    <label className="flex items-center gap-1 text-sm">
    <input type="checkbox" {...register(name)} /> {label}
    </label>
  );
}

/* ────────────────────────────────────────────────────────────
 * Component
 * ──────────────────────────────────────────────────────────── */
export default function SettingsSubmit(props: SettingsSubmitProps) {
  const { mode = "create" } = props;
  const isEdit = mode === "edit";

  const router = useRouter();
  const sp = useSearchParams();

  // initial target (locked in edit)
  const initialTarget: Target =
  isEdit ? props.initialTarget : ((sp.get("target") as Target) || props.initialTarget || "settings_fiber");

  const [target, setTarget] = useState<Target>(initialTarget);

  // Map collection -> slug used by options selectors
  const typeForOptions = useMemo(() => {
    switch (target) {
      case "settings_fiber":
        return "fiber";
      case "settings_uv":
        return "uv";
      case "settings_co2gan":
        return "co2-gantry";
      case "settings_co2gal":
        return "co2-galvo";
      default:
        return "fiber";
    }
  }, [target]);

  // Image inputs
  const [photoFile, setPhotoFile] = useState<File | null>(null);
  const [screenFile, setScreenFile] = useState<File | null>(null);
  const [photoPreview, setPhotoPreview] = useState<string>("");
  const [screenPreview, setScreenPreview] = useState<string>("");

  // UX error for auth/submit
  const [submitErr, setSubmitErr] = useState<string | null>(null);

  // Current signed-in user (banner only)
  const [me, setMe] = useState<Me | null>(null);
  const [meErr, setMeErr] = useState<string | null>(null);

  useEffect(() => {
    let alive = true;

    // use our bearer-only API
    fetch(`/api/me`, { cache: "no-store", credentials: "include" })
    .then((r) => (r.ok ? r.json() : Promise.reject(r)))
    .then((j) => {
      if (!alive) return;
      setMe(j || null);
    })
    .catch(() => {
      if (alive) setMeErr("not-signed-in");
    });

      return () => {
        alive = false;
      };
  }, []);

  const meLabel =
  me?.display_name?.trim() ||
  [me?.first_name, me?.last_name].filter(Boolean).join(" ").trim() ||
  me?.username?.trim() ||
  me?.email?.trim() ||
  (me?.id ? `User ${me.id.slice(0, 8)}…${me.id.slice(-4)}` : "Unknown user");

  // Options
  const mats = useOptions("material");
  const coats = useOptions("material_coating");
  const colors = useOptions("material_color");
  const opacs = useOptions("material_opacity");
  const soft = useOptions("laser_software"); // required for ALL targets

  // these two need ?target=
  const srcs = useOptions(`laser_source?target=${typeForOptions}`);
  const lens = useOptions(`lens?target=${typeForOptions}`);

  // Repeater choice options (LOCAL now, no network)
  const fillType = { opts: toOpts(FILL_TYPE_OPTIONS), loading: false, setQ: (_: string) => {} };
  const rasterType = { opts: toOpts(RASTER_TYPE_OPTIONS), loading: false, setQ: (_: string) => {} };
  const rasterDither = { opts: toOpts(RASTER_DITHER_OPTIONS), loading: false, setQ: (_: string) => {} };

  // Default values
  const createDefaults: FormValues = {
    setting_title: "",
    setting_notes: "",
    photo: null,
    screen: null,
    mat: "",
    mat_coat: "",
    mat_color: "",
    mat_opacity: "",
    mat_thickness: null,
    source: "",
    lens: "",
    focus: null,
    laser_soft: "",
    repeat_all: null,
    fill_settings: [],
    line_settings: [],
    raster_settings: [],
  };

  const {
    register,
    handleSubmit,
    control,
    reset,
    formState: { isSubmitting },
  } = useForm<FormValues>({
    defaultValues: isEdit ? (props as EditProps).initialValues : (props.initialValues as any) || createDefaults,
  });

  // If edit props change (rare), sync the form
  useEffect(() => {
    if (isEdit) reset((props as EditProps).initialValues);
  }, [isEdit, reset, props]);

    const fills = useFieldArray({ control, name: "fill_settings" });
    const lines = useFieldArray({ control, name: "line_settings" });
    const rasters = useFieldArray({ control, name: "raster_settings" });

    function num(v: any) {
      return v === "" || v == null ? null : Number(v);
    }
    const bool = (v: any) => !!v;

    const detailHref = (coll: Target, submissionId: string | number) => {
      switch (coll) {
        case "settings_co2gal": return `/settings/co2-galvo/${submissionId}?edit=1`;
        case "settings_co2gan": return `/settings/co2-gantry/${submissionId}?edit=1`;
        case "settings_fiber":  return `/settings/fiber/${submissionId}?edit=1`;
        case "settings_uv":     return `/settings/uv/${submissionId}?edit=1`;
      }
    };

    async function onSubmit(values: FormValues) {
      setSubmitErr(null);

      // Build normalized payload/patch from form values
      const payload: any = {
        target,
        setting_title: values.setting_title,
        setting_notes: values.setting_notes || "",
        mat: values.mat || null,
        mat_coat: values.mat_coat || null,
        mat_color: values.mat_color || null,
        mat_opacity: values.mat_opacity || null,
        mat_thickness: num(values.mat_thickness),
        source: values.source || null,
        lens: values.lens || null,
        focus: num(values.focus),
        laser_soft: values.laser_soft || null, // all targets
        repeat_all: num(values.repeat_all),    // all targets
        fill_settings: (values.fill_settings || []).map((r: any) => ({
          name: r.name || "",
          power: num(r.power),
                                                                     speed: num(r.speed),
                                                                     interval: num(r.interval),
                                                                     pass: num(r.pass),
                                                                     type: r.type || "",
                                                                     frequency: num(r.frequency),
                                                                     pulse: num(r.pulse),
                                                                     angle: num(r.angle),
                                                                     auto: bool(r.auto),
                                                                     increment: num(r.increment),
                                                                     cross: bool(r.cross),
                                                                     flood: bool(r.flood),
                                                                     air: bool(r.air),
        })),
        line_settings: (values.line_settings || []).map((r: any) => ({
          name: r.name || "",
          power: num(r.power),
                                                                     speed: num(r.speed),
                                                                     perf: bool(r.perf),
                                                                     cut: r.cut || "",
                                                                     skip: r.skip || "",
                                                                     pass: num(r.pass),
                                                                     air: bool(r.air),
                                                                     frequency: num(r.frequency),
                                                                     pulse: num(r.pulse),
                                                                     wobble: bool(r.wobble),
                                                                     step: num(r.step),
                                                                     size: num(r.size),
        })),
        raster_settings: (values.raster_settings || []).map((r: any) => ({
          name: r.name || "",
          power: num(r.power),
                                                                         speed: num(r.speed),
                                                                         type: r.type || "",
                                                                         dither: r.dither || "",
                                                                         halftone_cell: num(r.halftone_cell),
                                                                         halftone_angle: num(r.halftone_angle),
                                                                         inversion: bool(r.inversion),
                                                                         interval: num(r.interval),
                                                                         dot: num(r.dot),
                                                                         pass: num(r.pass),
                                                                         air: bool(r.air),
                                                                         frequency: num(r.frequency),
                                                                         pulse: num(r.pulse),
                                                                         cross: bool(r.cross),
        })),
      };

      try {
        let res: Response;

        if (isEdit) {
          // EDIT FLOW: call /api/my-settings/update
          const { initialTarget, submissionId } = props as EditProps;

          // When files are picked, send multipart so backend can upload & patch.
          if (photoFile || screenFile) {
            const form = new FormData();
            form.set(
              "payload",
              JSON.stringify({
                collection: initialTarget,
                submission_id: submissionId,
                patch: payload, // server decides which keys to persist
              })
            );
            if (photoFile) form.set("photo", photoFile, photoFile.name || "photo");
            if (screenFile) form.set("screen", screenFile, screenFile.name || "screen");

            res = await fetch("/api/my-settings/update", {
              method: "POST",
              credentials: "include",
              body: form,
            });
          } else {
            // JSON only (no file changes)
            res = await fetch("/api/my-settings/update", {
              method: "POST",
              credentials: "include",
              headers: { "Content-Type": "application/json", Accept: "application/json" },
              body: JSON.stringify({
                collection: initialTarget,
                submission_id: submissionId,
                patch: payload,
              }),
            });
          }

          const txt = await res.text();
          const data = txt ? JSON.parse(txt) : null;
          if (!res.ok || !data?.ok) {
            const msg = data?.error || data?.message || `HTTP ${res.status}`;
            throw new Error(msg);
          }

          const savedId = data?.id ?? (props as EditProps).submissionId;
          props.onSaved?.(savedId);
          router.push(detailHref(initialTarget, savedId));
          return;
        }

        // CREATE FLOW: photo is required
        if (!photoFile) {
          (document.querySelector('input[type="file"][data-role="photo"]') as HTMLInputElement | null)?.focus();
          throw new Error("Please select a Result Photo.");
        }

        if (photoFile || screenFile) {
          const form = new FormData();
          form.set("payload", JSON.stringify(payload));
          if (photoFile) form.set("photo", photoFile, photoFile.name || "photo");
          if (screenFile) form.set("screen", screenFile, screenFile.name || "screen");
          res = await fetch("/api/submit/settings", { method: "POST", body: form, credentials: "include" });
        } else {
          res = await fetch("/api/submit/settings", {
            method: "POST",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify(payload),
                            credentials: "include",
          });
        }

        const data = await res.json().catch(() => ({}));
        if (!res.ok) {
          if (res.status === 401 || res.status === 403) throw new Error("You must be signed in to submit settings.");
          throw new Error(data?.error || "Submission failed");
        }

        reset(createDefaults);
        setPhotoFile(null);
        setScreenFile(null);
        setPhotoPreview("");
        setScreenPreview("");

        const id = data?.id ? String(data.id) : "";
        props.onSaved?.(id);
        router.push(`/submit/settings/success?target=${encodeURIComponent(target)}&id=${encodeURIComponent(id)}`);
      } catch (e: any) {
        setSubmitErr(e?.message || "Submission failed");
      }
    }

    function onPick(file: File | null, setFile: (f: File | null) => void, setPreview: (s: string) => void) {
      setFile(file);
      if (!file) {
        setPreview("");
        return;
      }
      const reader = new FileReader();
      reader.onload = () => setPreview(String(reader.result || ""));
      reader.readAsDataURL(file);
    }

    return (
      <div className="max-w-3xl mx-auto space-y-4">
      {/* Target + Software (Software required for ALL targets) */}
      <div className="flex flex-wrap gap-3 items-end">
      <div>
      <label className="block text-sm mb-1">Target</label>
      <select
      className="border rounded px-2 py-1"
      value={target}
      onChange={(e) => setTarget(e.target.value as Target)}
      disabled={isEdit} // lock in edit mode
      >
      <option value="settings_fiber">Fiber</option>
      <option value="settings_co2gan">CO₂ Gantry</option>
      <option value="settings_co2gal">CO₂ Galvo</option>
      <option value="settings_uv">UV</option>
      </select>
      {isEdit && <p className="text-xs text-muted-foreground mt-1">Target is fixed while editing.</p>}
      </div>

      <div className="flex-1 min-w-[220px]">
      <FilterableSelect
      label="Software"
      name="laser_soft"
      register={register}
      options={soft.opts}
      loading={soft.loading}
      onQuery={soft.setQ}
      required={true}
      />
      </div>
      </div>

      {/* Submitting-as banner */}
      {me ? (
        <div className="text-sm text-muted-foreground">
        {isEdit ? "Editing as " : "Submitting as "}
        <span className="font-medium">{meLabel}</span>.
        </div>
      ) : meErr ? (
        <div className="border border-yellow-600 bg-yellow-50 text-yellow-800 rounded p-2 text-sm">
        You’re not signed in. {isEdit ? "Saving changes" : "Submissions"} will fail until you sign in.
        </div>
      ) : null}

      {submitErr ? (
        <div className="border border-red-500 text-red-600 bg-red-50 rounded p-2 text-sm">{submitErr}</div>
      ) : null}

      <form onSubmit={handleSubmit(onSubmit)} className="space-y-4">
      {/* Title */}
      <div className="grid md:grid-cols-2 gap-3">
      <div className="md:col-span-2">
      <label className="block text-sm mb-1">
      Title <span className="text-red-600">*</span>
      </label>
      <input className="w-full border rounded px-2 py-1" {...register("setting_title", { required: true })} />
      </div>
      </div>

      {/* Images */}
      <div className="grid md:grid-cols-2 gap-4">
      <div>
      <label className="block text-sm mb-1">
      Result Photo {isEdit ? null : <span className="text-red-600">*</span>}
      </label>
      {isEdit && typeof (props as EditProps).initialValues?.photo === "string" && (
        <p className="text-xs text-muted-foreground mb-1">
        Current: <span className="font-mono">{shortId((props as EditProps).initialValues.photo)}</span>
        </p>
      )}
      <input
      type="file"
      accept="image/*"
      data-role="photo"
      required={!isEdit}
      onChange={(e) => onPick(e.target.files?.[0] ?? null, setPhotoFile, setPhotoPreview)}
      />
      <p className="text-xs text-muted-foreground mt-1">
      {photoFile ? (
        <>
        Selected: <span className="font-mono">{photoFile.name}</span>
        </>
      ) : (
        "Max 25 MB. JPG/PNG/WebP recommended."
      )}
      </p>
      {photoPreview ? <img src={photoPreview} alt="Result preview" className="mt-2 rounded border" /> : null}
      </div>

      <div>
      <label className="block text-sm mb-1">Settings Screenshot (optional)</label>
      {isEdit && typeof (props as EditProps).initialValues?.screen === "string" && (
        <p className="text-xs text-muted-foreground mb-1">
        Current: <span className="font-mono">{shortId((props as EditProps).initialValues.screen)}</span>
        </p>
      )}
      <input
      type="file"
      accept="image/*"
      onChange={(e) => onPick(e.target.files?.[0] ?? null, setScreenFile, setScreenPreview)}
      />
      <p className="text-xs text-muted-foreground mt-1">
      {screenFile ? (
        <>
        Selected: <span className="font-mono">{screenFile.name}</span>
        </>
      ) : (
        "Max 25 MB. JPG/PNG/WebP recommended."
      )}
      </p>
      {screenPreview ? <img src={screenPreview} alt="Settings preview" className="mt-2 rounded border" /> : null}
      </div>
      </div>

      {/* Notes */}
      <div>
      <label className="block text-sm mb-1">Notes</label>
      <textarea rows={4} className="w-full border rounded px-2 py-1" {...register("setting_notes")} />
      </div>

      {/* Material / Source / Lens */}
      <div className="grid md:grid-cols-2 gap-3">
      <FilterableSelect
      label="Material"
      name="mat"
      register={register}
      options={mats.opts}
      loading={mats.loading}
      onQuery={mats.setQ}
      required
      />
      <FilterableSelect
      label="Coating"
      name="mat_coat"
      register={register}
      options={coats.opts}
      loading={coats.loading}
      onQuery={coats.setQ}
      required
      />
      <FilterableSelect
      label="Color"
      name="mat_color"
      register={register}
      options={colors.opts}
      loading={colors.loading}
      onQuery={colors.setQ}
      required
      />
      <FilterableSelect
      label="Opacity"
      name="mat_opacity"
      register={register}
      options={opacs.opts}
      loading={opacs.loading}
      onQuery={opacs.setQ}
      required
      />
      <FilterableSelect
      label="Laser Source"
      name="source"
      register={register}
      options={srcs.opts}
      loading={srcs.loading}
      onQuery={srcs.setQ}
      required
      />
      <FilterableSelect
      label="Lens"
      name="lens"
      register={register}
      options={lens.opts}
      loading={lens.loading}
      onQuery={lens.setQ}
      required
      />
      </div>

      {/* Focus, thickness, repeat_all */}
      <div className="grid md:grid-cols-3 gap-3">
      <div>
      <label className="block text-sm mb-1">Material Thickness (mm)</label>
      <input type="number" step="0.01" className="w-full border rounded px-2 py-1" {...register("mat_thickness")} />
      </div>
      <div>
      <label className="block text-sm mb-1">
      Focus (mm) <span className="text-red-600">*</span>
      </label>
      <input
      type="number"
      min={-10}
      max={10}
      step="1"
      className="w-full border rounded px-2 py-1"
      {...register("focus", { required: true })}
      />
      <p className="text-xs text-muted-foreground mt-1">
      0 = in focus. Negative = focus closer. Positive = focus further.
      </p>
      </div>
      <div>
      <label className="block text-sm mb-1">
      Repeat All <span className="text-red-600">*</span>
      </label>
      <input type="number" step="1" className="w-full border rounded px-2 py-1" {...register("repeat_all", { required: true })} />
      </div>
      </div>

      {/* FILL */}
      <fieldset className="border rounded p-3 space-y-2">
      <div className="flex items-center justify-between">
      <legend className="font-semibold">Fill Settings</legend>
      <button
      type="button"
      className="px-2 py-1 border rounded"
      onClick={() => fills.append({ type: "uni" })} // default ensures value populated
      >
      + Add
      </button>
      </div>
      {fills.fields.map((f, i) => (
        <div key={f.id} className="grid md:grid-cols-4 gap-2">
        <input placeholder="Name" className="border rounded px-2 py-1 md:col-span-2" {...register(`fill_settings.${i}.name`)} />
        <FilterableSelect
        label="Type"
        name={`fill_settings.${i}.type`}
        register={register}
        options={fillType.opts}
        loading={false}
        onQuery={() => {}}
        placeholder="Select type"
        />
        <input placeholder="Frequency (kHz)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`fill_settings.${i}.frequency`)} />
        <input placeholder="Pulse (ns)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`fill_settings.${i}.pulse`)} />
        <input placeholder="Power (%)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`fill_settings.${i}.power`)} />
        <input placeholder="Speed (mm/s)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`fill_settings.${i}.speed`)} />
        <input placeholder="Interval (mm)" type="number" step="0.001" className="border rounded px-2 py-1" {...register(`fill_settings.${i}.interval`)} />
        <input placeholder="Pass" type="number" step="1" className="border rounded px-2 py-1" {...register(`fill_settings.${i}.pass`)} />
        <input placeholder="Angle (°)" type="number" step="1" className="border rounded px-2 py-1" {...register(`fill_settings.${i}.angle`)} />
        <input placeholder="Increment" type="number" step="0.001" className="border rounded px-2 py-1" {...register(`fill_settings.${i}.increment`)} />
        <div className="flex items-center gap-3">
        <BoolBox label="Auto" name={`fill_settings.${i}.auto`} register={register} />
        <BoolBox label="Cross" name={`fill_settings.${i}.cross`} register={register} />
        </div>
        <div className="flex items-center gap-3">
        <BoolBox label="Flood" name={`fill_settings.${i}.flood`} register={register} />
        <BoolBox label="Air" name={`fill_settings.${i}.air`} register={register} />
        </div>

        <button type="button" className="px-2 py-1 border rounded md:col-span-4" onClick={() => fills.remove(i)}>
        Remove
        </button>
        </div>
      ))}
      </fieldset>

      {/* LINE */}
      <fieldset className="border rounded p-3 space-y-2">
      <div className="flex items-center justify-between">
      <legend className="font-semibold">Line Settings</legend>
      <button type="button" className="px-2 py-1 border rounded" onClick={() => lines.append({})}>
      + Add
      </button>
      </div>
      {lines.fields.map((f, i) => (
        <div key={f.id} className="grid md:grid-cols-4 gap-2">
        <input placeholder="Name" className="border rounded px-2 py-1 md:col-span-2" {...register(`line_settings.${i}.name`)} />
        <input placeholder="Frequency (kHz)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`line_settings.${i}.frequency`)} />
        <input placeholder="Pulse (ns)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`line_settings.${i}.pulse`)} />
        <input placeholder="Power (%)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`line_settings.${i}.power`)} />
        <input placeholder="Speed (mm/s)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`line_settings.${i}.speed`)} />
        <input placeholder="Perf" className="border rounded px-2 py-1" {...register(`line_settings.${i}.perf`)} />
        <input placeholder="Cut" className="border rounded px-2 py-1" {...register(`line_settings.${i}.cut`)} />
        <input placeholder="Skip" className="border rounded px-2 py-1" {...register(`line_settings.${i}.skip`)} />
        <input placeholder="Pass" type="number" step="1" className="border rounded px-2 py-1" {...register(`line_settings.${i}.pass`)} />
        <input placeholder="Step" type="number" step="0.001" className="border rounded px-2 py-1" {...register(`line_settings.${i}.step`)} />
        <input placeholder="Size" type="number" step="0.001" className="border rounded px-2 py-1" {...register(`line_settings.${i}.size`)} />
        <BoolBox label="Wobble" name={`line_settings.${i}.wobble`} register={register} />
        <BoolBox label="Air" name={`line_settings.${i}.air`} register={register} />

        <button type="button" className="px-2 py-1 border rounded md:col-span-4" onClick={() => lines.remove(i)}>
        Remove
        </button>
        </div>
      ))}
      </fieldset>

      {/* RASTER */}
      <fieldset className="border rounded p-3 space-y-2">
      <div className="flex items-center justify-between">
      <legend className="font-semibold">Raster Settings</legend>
      <button
      type="button"
      className="px-2 py-1 border rounded"
      onClick={() => rasters.append({ type: "uni", dither: "threshold" })} // defaults ensure values are set
      >
      + Add
      </button>
      </div>
      {rasters.fields.map((f, i) => (
        <div key={f.id} className="grid md:grid-cols-4 gap-2">
        <input placeholder="Name" className="border rounded px-2 py-1 md:col-span-2" {...register(`raster_settings.${i}.name`)} />
        <input placeholder="Frequency (kHz)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`raster_settings.${i}.frequency`)} />
        <input placeholder="Pulse (ns)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`raster_settings.${i}.pulse`)} />
        <FilterableSelect
        label="Type"
        name={`raster_settings.${i}.type`}
        register={register}
        options={rasterType.opts}
        loading={false}
        onQuery={() => {}}
        placeholder="Select type"
        />
        <FilterableSelect
        label="Dither"
        name={`raster_settings.${i}.dither`}
        register={register}
        options={rasterDither.opts}
        loading={false}
        onQuery={() => {}}
        placeholder="Select dither"
        />
        <input placeholder="Power (%)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`raster_settings.${i}.power`)} />
        <input placeholder="Speed (mm/s)" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`raster_settings.${i}.speed`)} />
        <input placeholder="Halftone Cell" type="number" step="1" className="border rounded px-2 py-1" {...register(`raster_settings.${i}.halftone_cell`)} />
        <input placeholder="Halftone Angle" type="number" step="1" className="border rounded px-2 py-1" {...register(`raster_settings.${i}.halftone_angle`)} />
        <input placeholder="Interval (mm)" type="number" step="0.001" className="border rounded px-2 py-1" {...register(`raster_settings.${i}.interval`)} />
        <input placeholder="Dot" type="number" step="0.1" className="border rounded px-2 py-1" {...register(`raster_settings.${i}.dot`)} />
        <input placeholder="Pass" type="number" step="1" className="border rounded px-2 py-1" {...register(`raster_settings.${i}.pass`)} />
        <BoolBox label="Cross" name={`raster_settings.${i}.cross`} register={register} />
        <div className="flex items-center gap-3">
        <BoolBox label="Inversion" name={`raster_settings.${i}.inversion`} register={register} />
        <BoolBox label="Air" name={`raster_settings.${i}.air`} register={register} />
        </div>

        <button type="button" className="px-2 py-1 border rounded md:col-span-4" onClick={() => rasters.remove(i)}>
        Remove
        </button>
        </div>
      ))}
      </fieldset>

      <button
      disabled={isSubmitting}
      className="px-3 py-2 border rounded bg-accent text-background hover:opacity-90 disabled:opacity-50"
      >
      {isSubmitting ? (isEdit ? "Saving…" : "Submitting…") : (isEdit ? "Save Changes" : "Submit Settings")}
      </button>
      </form>
      </div>
    );
}