import type { RuntimeConfig } from '@nuxt/schema'
import type { AnyAbility } from '@casl/ability'
import type { Router } from 'vue-router'
import type {
  IconItem,
  MenuBuilder,
  MenuGroup,
  MenuItem,
  MenuItems,
} from '~/types/layout'
import { MENU_LINK_TYPE } from '~/types/enum/layout'
import UrlUtils from '~/services/utils/urlUtils'
import type { AccessProfile, organizationState } from '~/types/interfaces'
import { LINK_TARGET } from '~/types/enum/enums'

/**
 * Classe de base des menus et sous-menus.
 *
 * La méthode principale est la méthode build
 */
abstract class AbstractMenuBuilder implements MenuBuilder {
  protected runtimeConfig: RuntimeConfig
  protected ability: AnyAbility
  protected organizationProfile: organizationState
  protected accessProfile: AccessProfile
  protected router: Router

  /**
   * Nom court désignant le menu que construit ce builder
   */
  static readonly menuName: string

  constructor(
    runtimeConfig: RuntimeConfig,
    ability: AnyAbility,
    organizationProfile: organizationState,
    accessProfile: AccessProfile,
    router: Router,
  ) {
    this.runtimeConfig = runtimeConfig
    this.ability = ability
    this.organizationProfile = organizationProfile
    this.accessProfile = accessProfile
    this.router = router
  }

  /**
   * Permet un accès non statique à la variable menuName
   */
  public getMenuName(): string {
    return Object.getPrototypeOf(this).constructor.menuName
  }

  /**
   * Construit et retourne un menu ou sous-menu selon le profil de l'utilisateur, le profil de son organisation
   * et les droits de l'utilisateur.
   *
   * Si le menu comporte plusieurs éléments, retourne une instance de MenuGroup
   * Si le menu ne comporte qu'un seul élément, retourne une instance de MenuItem
   * Si le menu ne comporte aucun élément, retourne null.
   */
  abstract build(): MenuItem | MenuGroup | null

  /**
   * Construit et retourne un MenuGroup
   *
   * @param label
   * @param icon
   * @param {Array<MenuItem>} children Tableau d'ItemMenu représentant les sous menu du menu principal
   * @param actions
   */
  protected createGroup(
    label: string,
    icon?: IconItem,
    children: MenuItems = [],
    actions: Array<MenuItem> = [],
  ): MenuGroup {
    return { label, icon, children, actions }
  }

  /**
   * Construit et retourne un MenuItem
   *
   * @param {IconItem} icon
   * @param {string} label Titre qui sera traduit
   * @param to
   * @param type
   * @param newTab
   * @return {MenuItem}
   */
  protected createItem(
    label: string,
    icon?: IconItem,
    to: string = '',
    type: MENU_LINK_TYPE = MENU_LINK_TYPE.INTERNAL,
    newTab: boolean = false,
  ): MenuItem {
    let url: string
    if (type === MENU_LINK_TYPE.INTERNAL) {
      console.warn(
        "'createItem()' should not be used for internal links, use 'makeChildren()'",
      )
    }
    switch (type) {
      case MENU_LINK_TYPE.V1:
        // eslint-disable-next-line no-case-declarations
        const v1BaseURL =
          this.runtimeConfig.baseUrlAdminLegacy ||
          this.runtimeConfig.public.baseUrlAdminLegacy
        url = UrlUtils.join(v1BaseURL, '#', to)
        break
      case MENU_LINK_TYPE.EXTERNAL:
        url = UrlUtils.prependHttps(to)
        break
      default:
        url = to
    }
    return {
      icon,
      label,
      to: url,
      type,
      active: false,
      target: newTab ? LINK_TARGET.BLANK : LINK_TARGET.SELF,
    }
  }

  protected buildSubmenu(menuBuilder: typeof AbstractMenuBuilder) {
    // @ts-expect-error this method has to be called from non-abstract subclasses
    const builder = new menuBuilder(
      this.runtimeConfig,
      this.ability,
      this.organizationProfile,
      this.accessProfile,
    )
    return builder.build()
  }

  /**
   * Make a list of MenuItems according to user abilities
   *
   * @param items
   * @protected
   */
  protected makeChildren(
    items: Array<{ pageName: string; icon?: string }>,
  ): MenuItems {
    const children: MenuItems = []

    items.forEach((item) => {
      const { pageName, icon } = item

      if (this.ability.can('display', pageName)) {
        const to = this.router.resolve({ name: pageName })
        if (!to) {
          throw new Error('unknown page name : ' + pageName)
        }
        children.push({
          icon: icon ? { name: icon } : undefined,
          label: pageName,
          to: to.href,
          type: MENU_LINK_TYPE.INTERNAL,
          active: false,
        })
      }
    })

    return children
  }
}
export default AbstractMenuBuilder