// Garden sharing data layer: zod shapes for /gardens/:id/shares plus the
// react-query hooks the share dialog and "leave garden" action use.

import { queryOptions, useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
import { z } from 'zod'
import { api } from './api'

export const shareRoleSchema = z.enum(['viewer', 'editor'])
export type ShareRole = z.infer<typeof shareRoleSchema>

export const shareSchema = z.object({
  id: z.number(),
  gardenId: z.number(),
  userId: z.number(),
  role: shareRoleSchema,
  createdBy: z.number(),
  version: z.number(),
  createdAt: z.string(),
  updatedAt: z.string(),
  email: z.string(),
  displayName: z.string(),
})
export type Share = z.infer<typeof shareSchema>

const sharesKey = (gardenId: number) => ['shares', gardenId] as const

export function sharesQueryOptions(gardenId: number) {
  return queryOptions({
    queryKey: sharesKey(gardenId),
    queryFn: async (): Promise<Share[]> => z.array(shareSchema).parse(await api.get(`/gardens/${gardenId}/shares`)),
  })
}

/** The shares on a garden (owner-only endpoint). */
export function useShares(gardenId: number) {
  return useQuery(sharesQueryOptions(gardenId))
}

// The add/update responses are a bare GardenShare (no email/displayName), so we
// don't parse them into the list's Share shape; onSuccess refetches the list.
export function useAddShare(gardenId: number) {
  const qc = useQueryClient()
  return useMutation({
    mutationFn: (input: { email: string; role: ShareRole }) => api.post(`/gardens/${gardenId}/shares`, input),
    onSuccess: () => qc.invalidateQueries({ queryKey: sharesKey(gardenId) }),
  })
}

export function useUpdateShareRole(gardenId: number) {
  const qc = useQueryClient()
  return useMutation({
    mutationFn: ({ userId, role }: { userId: number; role: ShareRole }) =>
      api.patch(`/gardens/${gardenId}/shares/${userId}`, { role }),
    onSuccess: () => qc.invalidateQueries({ queryKey: sharesKey(gardenId) }),
  })
}

/** Remove a share. Used both by the owner (revoke) and by a recipient leaving a
 *  garden (their own userId). Refreshes the garden list too, since a leave
 *  changes what the current user can see. */
export function useRemoveShare(gardenId: number) {
  const qc = useQueryClient()
  return useMutation({
    mutationFn: (userId: number) => api.delete(`/gardens/${gardenId}/shares/${userId}`),
    onSuccess: () => {
      qc.invalidateQueries({ queryKey: sharesKey(gardenId) })
      qc.invalidateQueries({ queryKey: ['gardens'] })
    },
  })
}

// --- public share link (owner-only management) -----------------------------
// The read-only public link that anyone (no account) can open. token is present
// only when enabled; the page builds the URL as `${origin}/g/${token}`.

export const shareLinkSchema = z.object({
  enabled: z.boolean(),
  token: z.string().optional(),
})
export type ShareLinkState = z.infer<typeof shareLinkSchema>

const shareLinkKey = (gardenId: number) => ['share-link', gardenId] as const

export function shareLinkQueryOptions(gardenId: number) {
  return queryOptions({
    queryKey: shareLinkKey(gardenId),
    queryFn: async (): Promise<ShareLinkState> =>
      shareLinkSchema.parse(await api.get(`/gardens/${gardenId}/share-link`)),
  })
}

/** The garden's public-link state (owner-only endpoint). */
export function useShareLink(gardenId: number) {
  return useQuery(shareLinkQueryOptions(gardenId))
}

/** Enable the public link, or with { rotate: true } issue a fresh token that
 *  invalidates the old URL. Writes the returned state straight into the cache. */
export function useEnableShareLink(gardenId: number) {
  const qc = useQueryClient()
  return useMutation({
    mutationFn: async ({ rotate = false }: { rotate?: boolean }): Promise<ShareLinkState> =>
      shareLinkSchema.parse(await api.post(`/gardens/${gardenId}/share-link`, { rotate })),
    onSuccess: (state) => qc.setQueryData(shareLinkKey(gardenId), state),
  })
}

/** Disable the public link. */
export function useDisableShareLink(gardenId: number) {
  const qc = useQueryClient()
  return useMutation({
    mutationFn: async (): Promise<ShareLinkState> =>
      shareLinkSchema.parse(await api.delete(`/gardens/${gardenId}/share-link`)),
    onSuccess: (state) => qc.setQueryData(shareLinkKey(gardenId), state),
  })
}