import { create } from 'zustand'
import { createJSONStorage, persist } from 'zustand/middleware'
import { sensitiveStorage } from '../lib/sensitive-storage'

/**
 * Connection details for a Sonarr / Radarr instance. The user can have
 * up to two of each: a "default" tier (1080p, regular library) and a
 * "4K" tier (separate root folder + quality profile). Many users keep
 * 4K and 1080p in separate libraries to avoid Jellyfin transcoding 4K
 * down to 1080p on weak clients.
 */
export interface ArrInstance {
  id: string
  kind: 'sonarr' | 'radarr'
  /** Display name shown in the request modal and Settings. */
  name: string
  baseUrl: string
  apiKey: string
  /** Distinguishes the regular tier from the 4K tier of the same kind. */
  tier: 'default' | '4k'
  /** Defaults the request modal pre-selects unless an override rule
   *  fires or the user picks something else. */
  defaultQualityProfileId?: number
  defaultRootFolder?: string
  defaultLanguageProfileId?: number
  /** Sonarr-only: monitor flag + season-folder layout the requester gets. */
  defaultMonitored?: boolean
  defaultSeasonFolder?: boolean
  /** Optional connection-test verdict, refreshed when settings page tests it. */
  lastTestedAt?: string
  lastTestVersion?: string
  lastTestError?: string
}

interface State {
  instances: ArrInstance[]
  upsert: (instance: ArrInstance) => void
  remove: (id: string) => void
  /** Convenience: find the instance matching kind + tier, or null. */
  pick: (kind: 'sonarr' | 'radarr', tier: 'default' | '4k') => ArrInstance | null
}

function uid() {
  return 'arr_' + Math.random().toString(36).slice(2, 10) + Date.now().toString(36)
}

export const useArrInstances = create<State>()(
  persist(
    (set, get) => ({
      instances: [],
      upsert: instance =>
        set(s => {
          const exists = s.instances.some(x => x.id === instance.id)
          if (exists) {
            return {
              instances: s.instances.map(x => (x.id === instance.id ? instance : x)),
            }
          }
          return { instances: [...s.instances, instance] }
        }),
      remove: id => set(s => ({ instances: s.instances.filter(x => x.id !== id) })),
      pick: (kind, tier) =>
        get().instances.find(x => x.kind === kind && x.tier === tier) || null,
    }),
    { name: 'arr-instances-v1', storage: createJSONStorage(() => sensitiveStorage) },
  ),
)

export function newArrInstance(kind: 'sonarr' | 'radarr', tier: 'default' | '4k'): ArrInstance {
  return {
    id: uid(),
    kind,
    tier,
    name: `${kind === 'sonarr' ? 'Sonarr' : 'Radarr'}${tier === '4k' ? ' 4K' : ''}`,
    baseUrl: '',
    apiKey: '',
    defaultMonitored: true,
    defaultSeasonFolder: true,
  }
}