import { ConfigurableSettings } from "../../preferences/Configurable.ts";
import { ExperimentKey, TextAlignment } from "../../preferences/Types.ts";
import { WebPubDefaults } from "./WebPubDefaults.ts";
import { WebPubPreferences } from "./WebPubPreferences.ts";

import { sMLWithRequest } from "@readium/navigator-html-injectables";

export interface IWebPubSettings {
  fontFamily?: string | null,
  fontWeight?: number | null,
  hyphens?: boolean | null,
  iOSPatch?: boolean | null,
  iPadOSPatch?: boolean | null,
  letterSpacing?: number | null,
  ligatures?: boolean | null,
  lineHeight?: number | null,
  noRuby?: boolean | null,
  paragraphIndent?: number | null,
  paragraphSpacing?: number | null,
  textAlign?: TextAlignment | null,
  textNormalization?: boolean | null,
  wordSpacing?: number | null,
  zoom?: number | null,
  experiments?: Array<ExperimentKey> | null,
}

export class WebPubSettings implements ConfigurableSettings {
  fontFamily: string | null = null;
  fontWeight: number | null = null;
  hyphens: boolean | null = null;
  iOSPatch: boolean | null = null;
  iPadOSPatch: boolean | null = null;
  letterSpacing: number | null = null;
  ligatures: boolean | null = null;
  lineHeight: number | null = null;
  noRuby: boolean | null = null;
  paragraphIndent: number | null = null;
  paragraphSpacing: number | null = null;
  textAlign: TextAlignment | null = null;
  textNormalization: boolean | null = null;
  wordSpacing: number | null = null;
  zoom: number | null;
  experiments: Array<ExperimentKey> | null;

  constructor(preferences: WebPubPreferences, defaults: WebPubDefaults, hasDisplayTransformability: boolean) {
    if (hasDisplayTransformability) {
      this.fontFamily = preferences.fontFamily || defaults.fontFamily || null;
      this.fontWeight = preferences.fontWeight !== undefined
        ? preferences.fontWeight
        : defaults.fontWeight !== undefined
          ? defaults.fontWeight
          : null;
      this.hyphens = typeof preferences.hyphens === "boolean"
        ? preferences.hyphens
        : defaults.hyphens ?? null;
      this.iOSPatch = preferences.iOSPatch === false
        ? false
        : preferences.iOSPatch === true
          ? ((sMLWithRequest.OS.iOS || sMLWithRequest.OS.iPadOS) && sMLWithRequest.iOSRequest === "mobile")
          : defaults.iOSPatch;
      this.iPadOSPatch = preferences.iPadOSPatch === false
        ? false
        : preferences.iPadOSPatch === true
          ? (sMLWithRequest.OS.iPadOS && sMLWithRequest.iOSRequest === "desktop")
          : defaults.iPadOSPatch;
      this.letterSpacing = preferences.letterSpacing !== undefined
        ? preferences.letterSpacing
        : defaults.letterSpacing !== undefined
          ? defaults.letterSpacing
          : null;
      this.ligatures = typeof preferences.ligatures === "boolean"
        ? preferences.ligatures
        : defaults.ligatures ?? null;
      this.lineHeight = preferences.lineHeight !== undefined
        ? preferences.lineHeight
        : defaults.lineHeight !== undefined
          ? defaults.lineHeight
          : null;
      this.noRuby = typeof preferences.noRuby === "boolean"
        ? preferences.noRuby
        : defaults.noRuby ?? null;
      this.paragraphIndent = preferences.paragraphIndent !== undefined
        ? preferences.paragraphIndent
        : defaults.paragraphIndent !== undefined
          ? defaults.paragraphIndent
          : null;
      this.paragraphSpacing = preferences.paragraphSpacing !== undefined
        ? preferences.paragraphSpacing
        : defaults.paragraphSpacing !== undefined
          ? defaults.paragraphSpacing
          : null;
      this.textAlign = preferences.textAlign || defaults.textAlign || null;
      this.textNormalization = typeof preferences.textNormalization === "boolean"
        ? preferences.textNormalization
        : defaults.textNormalization ?? null;
      this.wordSpacing = preferences.wordSpacing !== undefined
        ? preferences.wordSpacing
        : defaults.wordSpacing !== undefined
          ? defaults.wordSpacing
          : null;
    }

    this.zoom = preferences.zoom !== undefined
      ? preferences.zoom
      : defaults.zoom !== undefined
        ? defaults.zoom
        : null;

    this.experiments = defaults.experiments || null;
  }
}