import type { CSSProperties } from "react";
import type { PeqFilter, PeqState } from "@/lib/luxsinApi";
import localeZh from "@/locales/data-zh.json";

/* ── Filter types ── */
export const FILTER_TYPES = [
  "LPF",
  "HPF",
  "BPF",
  "NOTCH",
  "PEAK",
  "LSHELF",
  "HSHELF",
  "APF",
];

/* ── Band parameter ranges ── */
export const BAND_FREQ_MIN = 20;
export const BAND_FREQ_MAX = 20000;
export const BAND_GAIN_MIN = -15;
export const BAND_GAIN_MAX = 15;
export const BAND_Q_MIN = 0.1;
export const BAND_Q_MAX = 10;

/** Maximum headphone PEQ presets stored on device. */
export const PEQ_PRESET_MAX = 50;

export type BandParamKind = "freq" | "gain" | "q";

/* ── Band param value box style ── */
export const BAND_PARAM_VALUE_BOX_STYLE: CSSProperties = {
  background: "rgba(44,44,46,0.9)",
  border: "1px solid rgba(255,255,255,0.08)",
};

/* ── EQ UI locale type ── */
export type PeqEqUi = NonNullable<
  NonNullable<(typeof localeZh)["peq"]>["eqUi"]
>;

/* ── Default bands matching reference image ── */
export const DEFAULT_BANDS = [
  { freq: 9500, gain: 0, q: 1.41, type: "LSHELF", enabled: true },
  { freq: 9200, gain: -2, q: 1.41, type: "PEAK", enabled: true },
  { freq: 220, gain: 1, q: 1.41, type: "PEAK", enabled: true },
  { freq: 500, gain: -3, q: 1.41, type: "PEAK", enabled: true },
  { freq: 1200, gain: 0, q: 1.41, type: "PEAK", enabled: true },
  { freq: 13800, gain: -1, q: 1.41, type: "NOTCH", enabled: true },
  { freq: 11000, gain: -2, q: 1.41, type: "PEAK", enabled: true },
  { freq: 7400, gain: 1, q: 1.41, type: "PEAK", enabled: true },
  { freq: 8200, gain: -1, q: 1.41, type: "PEAK", enabled: true },
  { freq: 10000, gain: 0, q: 1.41, type: "HSHELF", enabled: true },
];

/* ── PEQ catalog item type ── */
export type PeqCatalogItem = NonNullable<PeqState["peq"]>[number];

/** 本地编辑缓存（按预设名称）；syncPeq 拉取时优先于设备 catalog */
export type PeqPresetLocalCache = {
  filters?: PeqFilter[];
  preamp?: number;
  autoPre?: number;
};

/* ── Flat preset filters ── */
export const FLAT_PRESET_FILTERS: PeqFilter[] = [
  { type: 4, fc: 80, gain: 0, q: 0.1 },
  { type: 4, fc: 150, gain: 0, q: 0.1 },
  { type: 4, fc: 350, gain: 0, q: 0.1 },
  { type: 4, fc: 750, gain: 0, q: 0.1 },
  { type: 4, fc: 1500, gain: 0, q: 0.1 },
  { type: 4, fc: 3000, gain: 0, q: 0.1 },
  { type: 4, fc: 6000, gain: 0, q: 0.1 },
  { type: 4, fc: 10000, gain: 0, q: 0.1 },
  { type: 4, fc: 14000, gain: 0, q: 0.1 },
  { type: 4, fc: 18000, gain: 0, q: 0.1 },
];

/* ── Catalog target type & data ── */
export type CatalogTarget = {
  name: string;
  bassBoost: { fc: number; q: number; gain: number };
  ear: "in" | "over" | "all";
};

export const CATALOG_TARGETS: CatalogTarget[] = [
  {
    name: "Harman over-ear 2018",
    bassBoost: { fc: 105, q: 0.7, gain: 6 },
    ear: "over",
  },
  {
    name: "HMS II.3 Harman over-ear 2018",
    bassBoost: { fc: 105, q: 0.7, gain: 6 },
    ear: "over",
  },
  {
    name: "crinacle EARS + 711 Harman over-ear 2018",
    bassBoost: { fc: 105, q: 0.7, gain: 6 },
    ear: "over",
  },
  {
    name: "Harman in-ear 2019",
    bassBoost: { fc: 105, q: 0.7, gain: 9.5 },
    ear: "in",
  },
  {
    name: "AutoEq in-ear",
    bassBoost: { fc: 105, q: 0.7, gain: 8 },
    ear: "in",
  },
  {
    name: "HMS II.3 AutoEq in-ear",
    bassBoost: { fc: 105, q: 0.7, gain: 8 },
    ear: "in",
  },
  {
    name: "HMS II.3 Harman in-ear 2019",
    bassBoost: { fc: 105, q: 0.7, gain: 9.5 },
    ear: "in",
  },
  {
    name: "Diffuse Field 5128 (-1 dB/oct)",
    bassBoost: { fc: 105, q: 0.7, gain: 0 },
    ear: "over",
  },
  {
    name: "LMG 5128 0.6 without bass",
    bassBoost: { fc: 105, q: 0.7, gain: 6 },
    ear: "over",
  },
  {
    name: "JM-1 with Harman filters",
    bassBoost: { fc: 105, q: 0.7, gain: 6.5 },
    ear: "all",
  },
  {
    name: "oratory1990 in-ear",
    bassBoost: { fc: 105, q: 0.7, gain: 9.5 },
    ear: "in",
  },
  {
    name: "oratory1990 over-ear",
    bassBoost: { fc: 105, q: 0.7, gain: 6 },
    ear: "over",
  },
  {
    name: "Harman over-ear 2013",
    bassBoost: { fc: 105, q: 0.7, gain: 6 },
    ear: "over",
  },
  {
    name: "Flat",
    bassBoost: { fc: 105, q: 0.7, gain: 0 },
    ear: "all",
  },
];