---@diagnostic disable: unused-local, missing-return

-- NOTE: types are borrowed from plenary.nvim

---@class PlenaryPath
---@field new fun(self: PlenaryPath|string, path: string?): PlenaryPath
---@field absolute fun(): string
---@field is_file fun(self: PlenaryPath): boolean
---@field filename string
---@field joinpath fun(self: PlenaryPath, ...): PlenaryPath
---@field make_relative fun(self: PlenaryPath, cwd: string): string
---@field parent PlenaryPath
---@field path { sep: string }
---@field rm fun(self: PlenaryPath, opts: { recursive: boolean }?): nil
---@field touch fun(self: PlenaryPath, opts: { parents: boolean }?): nil

---@class PlenaryScanDirOptions
---@field hidden boolean if true hidden files will be added
---@field add_dirs boolean if true dirs will also be added to the results
---@field only_dirs boolean if true only dirs will be added to the results
---@field respect_gitignore boolean if true will only add files that are not ignored by the git
---@field depth integer depth on how deep the search should go
---@field search_pattern string|string[]|fun(path: string): boolean regex for which files will be added, string, table of strings, or fn(e) -> boolean
---@field on_insert fun(path: string): boolean           Will be called for each element
---@field silent boolean              if true will not echo messages that are not accessible

---@alias scan_dir fun(path: string, opts: PlenaryScanDirOptions): string[]

---@class PlenaryAsync
---@field control PlenaryAsyncControl
---@field tests { add_to_env: fun(): nil }
---@field util PlenaryAsyncUtil
---@field uv PlenaryAsyncUv
---@field void fun(f: fun(): nil): fun(): nil
---@field wrap fun(f: (fun(...): any), args: integer): (fun(...): any)
local PlenaryAsync = {}

---@async
---@param f fun(): nil
---@return nil
function PlenaryAsync.run(f) end

---@class PlenaryAsyncControl
---@field channel PlenaryAsyncControlChannel

---@class PlenaryAsyncControlChannel
---@field mpsc fun(): PlenaryAsyncControlChannelTx, PlenaryAsyncControlChannelRx
---@field counter fun(): PlenaryAsyncControlChannelTx, PlenaryAsyncControlChannelRx

---@class PlenaryAsyncControlChannelTx
---@field send fun(entry: any?): nil
local PlenaryAsyncControlChannelTx = {}

---@class PlenaryAsyncControlChannelRx
local PlenaryAsyncControlChannelRx = {}

---@async
---@return any?
function PlenaryAsyncControlChannelRx.recv() end

---@async
---@return any?
function PlenaryAsyncControlChannelRx.last() end

---@class PlenaryAsyncUtil
local PlenaryAsyncUtil = {}

---@class PlenaryAsyncUv
local PlenaryAsyncUv = {}

---@class FsStatMtime
---@field sec integer
---@field nsec integer

---@class FsStat
---@field mtime FsStatMtime
---@field size integer
---@field type "file"|"directory"

---@async
---@param path string
---@return string? err
---@return { mtime: FsStatMtime, size: integer, type: "file"|"directory" }
function PlenaryAsyncUv.fs_stat(path) end

---@async
---@param path string
---@param flags string|integer
---@param mode integer
---@return string? err
---@return integer fd
function PlenaryAsyncUv.fs_open(path, flags, mode) end

---@async
---@param fd integer
---@param size integer
---@param offset integer?
---@return string? err
---@return string data
function PlenaryAsyncUv.fs_read(fd, size, offset) end

---@async
---@param fd integer
---@param data string
---@param offset integer?
---@return string? err
---@return integer bytes
function PlenaryAsyncUv.fs_write(fd, data, offset) end

---@async
---@param path string
---@return string? err
---@return boolean? success
function PlenaryAsyncUv.fs_unlink(path) end

---@async
---@param fd integer
---@return string? err
function PlenaryAsyncUv.fs_close(fd) end

---@async
---@param ms integer
---@return nil
function PlenaryAsyncUtil.sleep(ms) end

---@async
---@return nil
function PlenaryAsyncUtil.scheduler() end

-- NOTE: types are for telescope.nvim

---@alias TelescopeEntryDisplayer fun(items: string[]): table

---@class TelescopeEntryDisplayOptions
---@field separator string?
---@field hl_chars table<string, string>?
---@field items string[]

---@class TelescopeEntryDisplay
---@field create fun(opts: TelescopeEntryDisplayOptions): TelescopeEntryDisplayer

---@class TelescopeUtils
---@field path_tail fun(path: string): string
---@field transform_path fun(opts: table, path: string): string
---@field buf_is_loaded fun(filename: string): boolean

---@class TelescopePicker
---@field clear_extra_rows fun(self: TelescopePicker, results_bufnr: integer): nil
---@field get_row fun(self: TelescopePicker, index: integer): integer
---@field manager TelescopeEntryManager|false
---@field prompt_bufnr integer
---@field prompt_prefix string
---@field results_bufnr integer?
---@field results_win integer?
---@field sorting_strategy 'ascending'|'descending'

---@class TelescopeEntryManager
---@field num_results fun(): integer

-- NOTE: types for default functions

---@class UvFsEventHandle
---@field stop fun(self: UvFsEventHandle): nil
---@field start fun(self: UvFsEventHandle, path: string, opts: { recursive: boolean }, cb: fun(err: string?, filename: string?, events: string[])): nil
---@field close fun(self: UvFsEventHandle): nil

--- @class VimSystemObj
--- @field pid integer
--- @field wait fun(self: VimSystemObj, timeout?: integer): VimSystemCompleted
--- @field kill fun(self: VimSystemObj, signal: integer|string)
--- @field write fun(self: VimSystemObj, data?: string|string[])
--- @field is_closing fun(self: VimSystemObj): boolean?

--- @class VimSystemCompleted
--- @field code integer
--- @field signal integer
--- @field stdout? string
--- @field stderr? string