"use client"

import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
import { apiClient } from "@/lib/api/client"
import { driveFilesListApiPath, driveFilterCorpusApiPath } from "@/lib/api/drive-download"
import { useAuthReady } from "@/lib/api/use-auth-ready"
import type { DriveFileInfo, DriveListResponse, DriveQuota, DriveShare, ShareRecipientLookup } from "@/lib/api/types"
import type { DriveShareMode } from "@/lib/drive/drive-share-types"

function filesKey(path: string, page: number, q: string) {
  return ["drive", "files", path, page, q] as const
}

function filterCorpusKey(path: string) {
  return ["drive", "filter-corpus", path] as const
}

export function useDriveFilterCorpus(path: string, enabled = true) {
  const { ready, authenticated } = useAuthReady()
  const apiPath = driveFilterCorpusApiPath(path)
  return useQuery({
    queryKey: filterCorpusKey(path),
    enabled: ready && authenticated && enabled,
    staleTime: 60_000,
    queryFn: () => apiClient.get<DriveListResponse>(apiPath),
  })
}

export function useDriveList(path: string, page = 1, q = "", enabled = true) {
  const { ready, authenticated } = useAuthReady()
  const apiPath = driveFilesListApiPath(path)
  return useQuery({
    queryKey: filesKey(path, page, q),
    enabled: ready && authenticated && enabled,
    queryFn: () =>
      apiClient.get<DriveListResponse>(`${apiPath}?page=${page}&page_size=50${q ? `&q=${encodeURIComponent(q)}` : ""}`),
  })
}

export function useDriveFileById(fileId: string, enabled = true) {
  const { ready, authenticated } = useAuthReady()
  return useQuery({
    queryKey: ["drive", "file", fileId],
    enabled: ready && authenticated && enabled && Boolean(fileId),
    staleTime: 30_000,
    queryFn: () => apiClient.get<DriveFileInfo>(`/drive/files/id/${encodeURIComponent(fileId)}`),
  })
}

export function useDriveSharedWithMe(page = 1, q = "", enabled = true) {
  const { ready, authenticated } = useAuthReady()
  return useQuery({
    queryKey: ["drive", "shared", page, q],
    enabled: ready && authenticated && enabled,
    queryFn: () =>
      apiClient.get<DriveListResponse>(
        `/drive/shared?page=${page}&page_size=50${q ? `&q=${encodeURIComponent(q)}` : ""}`
      ),
  })
}

export function useDriveTrash(page = 1, q = "") {
  const { ready, authenticated } = useAuthReady()
  return useQuery({
    queryKey: ["drive", "trash", page, q],
    enabled: ready && authenticated,
    queryFn: () =>
      apiClient.get<DriveListResponse>(`/drive/trash?page=${page}&page_size=50${q ? `&q=${encodeURIComponent(q)}` : ""}`),
  })
}

export function useDriveRecent() {
  const { ready, authenticated } = useAuthReady()
  return useQuery({
    queryKey: ["drive", "recent"],
    enabled: ready && authenticated,
    retry: 1,
    queryFn: () => apiClient.get<DriveListResponse>("/drive/recent?page_size=50"),
  })
}

export function useDriveStarred(path = "/") {
  const { ready, authenticated } = useAuthReady()
  const suffix = path === "/" ? "" : path
  return useQuery({
    queryKey: ["drive", "starred", path],
    enabled: ready && authenticated,
    queryFn: () => apiClient.get<DriveListResponse>(`/drive/starred${suffix}?page_size=50`),
  })
}

function searchKey(q: string, scope: string, path: string, page: number, suggest: boolean) {
  return ["drive", "search", q, scope, path, page, suggest] as const
}

export function useDriveSearch(
  q: string,
  scope: string,
  path: string,
  page = 1,
  enabled = true
) {
  const { ready, authenticated } = useAuthReady()
  const trimmed = q.trim()
  return useQuery({
    queryKey: searchKey(trimmed, scope, path, page, false),
    enabled: ready && authenticated && enabled && trimmed.length > 0,
    queryFn: () => {
      const params = new URLSearchParams({
        q: trimmed,
        scope,
        page: String(page),
        page_size: "50",
      })
      if (scope === "folder" && path !== "/") {
        params.set("path", path)
      }
      return apiClient.get<DriveListResponse>(`/drive/search?${params.toString()}`)
    },
  })
}

export function useDriveSearchSuggestions(
  q: string,
  scope: string,
  path: string,
  enabled = true
) {
  const { ready, authenticated } = useAuthReady()
  const trimmed = q.trim()
  return useQuery({
    queryKey: searchKey(trimmed, scope, path, 1, true),
    enabled: ready && authenticated && enabled && trimmed.length >= 2,
    staleTime: 30_000,
    queryFn: () => {
      const params = new URLSearchParams({
        q: trimmed,
        scope,
        suggest: "1",
        page_size: "8",
      })
      if (scope === "folder" && path !== "/") {
        params.set("path", path)
      }
      return apiClient.get<DriveListResponse>(`/drive/search?${params.toString()}`)
    },
  })
}

export function useDriveQuota() {
  const { ready, authenticated } = useAuthReady()
  return useQuery({
    queryKey: ["drive", "quota"],
    enabled: ready && authenticated,
    retry: 1,
    queryFn: () => apiClient.get<DriveQuota>("/drive/quota"),
  })
}

export function useDriveShares(filePath: string, enabled: boolean) {
  const { ready, authenticated } = useAuthReady()
  return useQuery({
    queryKey: ["drive", "shares", filePath],
    enabled: ready && authenticated && enabled && Boolean(filePath),
    queryFn: () =>
      apiClient.get<{ shares: DriveShare[] }>(`/drive/shares?path=${encodeURIComponent(filePath)}`),
  })
}

export function useDriveMutations() {
  const qc = useQueryClient()
  const invalidate = () => qc.invalidateQueries({ queryKey: ["drive"] })

  const createFolder = useMutation({
    mutationFn: (path: string) => apiClient.post<void>(`/drive/folders${path}`, {}),
    onSuccess: invalidate,
  })
  const deleteFile = useMutation({
    mutationFn: (path: string) => apiClient.delete(`/drive/files${path}`),
    onSuccess: invalidate,
  })
  const rename = useMutation({
    mutationFn: (body: { path: string; new_name: string }) => apiClient.post<void>("/drive/rename", body),
    onSuccess: invalidate,
  })
  const move = useMutation({
    mutationFn: (body: { source: string; destination: string }) => apiClient.post<void>("/drive/move", body),
    onSuccess: invalidate,
  })
  const copy = useMutation({
    mutationFn: (body: { source: string; destination: string }) => apiClient.post<void>("/drive/copy", body),
    onSuccess: invalidate,
  })
  const favorite = useMutation({
    mutationFn: (body: { path: string; favorite: boolean }) => apiClient.post<void>("/drive/favorite", body),
    onSuccess: invalidate,
  })
  const restore = useMutation({
    mutationFn: (name: string) => apiClient.post<void>("/drive/trash/restore", { name }),
    onSuccess: invalidate,
  })
  const deleteTrash = useMutation({
    mutationFn: (name: string) => apiClient.post<void>("/drive/trash/delete", { name }),
    onSuccess: invalidate,
  })
  const emptyTrash = useMutation({
    mutationFn: () => apiClient.delete("/drive/trash"),
    onSuccess: invalidate,
  })
  const createShare = useMutation({
    mutationFn: (body: {
      path: string
      mode?: DriveShareMode
      role?: string
      permissions?: number
      share_type?: number
      share_with?: string
      note?: string
      send_mail?: boolean
    }) =>
      apiClient.post<DriveShare>("/drive/shares", {
        path: body.path,
        mode: body.mode ?? "public",
        ...(body.mode === "contact"
          ? {
              share_with: body.share_with,
              note: body.note,
              send_mail: body.send_mail ?? true,
            }
          : body.mode === "internal"
            ? { share_type: 3 }
            : { share_type: body.share_type ?? 3 }),
        ...(body.permissions != null && body.permissions > 0
          ? { permissions: body.permissions }
          : { role: body.role ?? "viewer" }),
      }),
    onSuccess: (_data, variables) => {
      qc.invalidateQueries({ queryKey: ["drive"] })
      if (variables.path) {
        qc.invalidateQueries({ queryKey: ["drive", "shares", variables.path] })
      }
    },
  })
  const deleteShare = useMutation({
    mutationFn: (shareId: string) => apiClient.delete(`/drive/shares/${shareId}`),
    onSuccess: invalidate,
  })
  const lookupShareRecipient = useMutation({
    mutationFn: (email: string) =>
      apiClient.get<ShareRecipientLookup>(
        `/drive/shares/recipients/lookup?email=${encodeURIComponent(email)}`
      ),
  })
  const createFile = useMutation({
    mutationFn: (body: { parent_path: string; name: string; kind: string }) =>
      apiClient.post<{ path: string }>("/office/create", body),
    onSuccess: invalidate,
  })

  return { createFolder, deleteFile, rename, move, copy, favorite, restore, deleteTrash, emptyTrash, createShare, deleteShare, lookupShareRecipient, createFile, invalidate }
}

/** @deprecated Use openDriveFileInNewTab / downloadDriveFile — API requires Authorization. */
export function fileDownloadUrl(path: string): string {
  const base = process.env.NEXT_PUBLIC_API_URL ?? "/api/v1"
  return `${base}/drive/download${path.startsWith("/") ? path : `/${path}`}`
}

export type { DriveFileInfo }