---@class pending.FoldingConfig
---@field foldtext? string|false

---@class pending.ResolvedFolding
---@field enabled boolean
---@field foldtext string|false

---@class pending.Icons
---@field pending string
---@field done string
---@field priority string
---@field wip string
---@field blocked string
---@field due string
---@field recur string
---@field category string

---@class pending.GcalConfig
---@field remote_delete? boolean
---@field credentials_path? string
---@field client_id? string
---@field client_secret? string

---@class pending.GtasksConfig
---@field remote_delete? boolean
---@field credentials_path? string
---@field client_id? string
---@field client_secret? string

---@class pending.S3Config
---@field bucket string
---@field key? string
---@field profile? string
---@field region? string

---@class pending.SyncConfig
---@field remote_delete? boolean
---@field gcal? pending.GcalConfig
---@field gtasks? pending.GtasksConfig
---@field s3? pending.S3Config

---@class pending.Keymaps
---@field close? string|false
---@field toggle? string|false
---@field view? string|false
---@field priority? string|false
---@field date? string|false
---@field undo? string|false
---@field filter? string|false
---@field open_line? string|false
---@field open_line_above? string|false
---@field a_task? string|false
---@field i_task? string|false
---@field a_category? string|false
---@field i_category? string|false
---@field next_header? string|false
---@field prev_header? string|false
---@field next_task? string|false
---@field prev_task? string|false
---@field category? string|false
---@field recur? string|false
---@field move_down? string|false
---@field move_up? string|false
---@field wip? string|false
---@field blocked? string|false

---@class pending.CategoryViewConfig
---@field order? string[]
---@field folding? boolean|pending.FoldingConfig

---@class pending.QueueViewConfig

---@class pending.ViewConfig
---@field default? 'category'|'priority'
---@field eol_format? string
---@field category? pending.CategoryViewConfig
---@field queue? pending.QueueViewConfig

---@class pending.Config
---@field data_path string
---@field default_category string
---@field date_format string
---@field date_syntax string
---@field recur_syntax string
---@field someday_date string
---@field input_date_formats? string[]
---@field drawer_height? integer
---@field debug? boolean
---@field keymaps pending.Keymaps
---@field view pending.ViewConfig
---@field max_priority? integer
---@field sync? pending.SyncConfig
---@field icons pending.Icons

---@class pending.config
local M = {}

---@type pending.Config
local defaults = {
  data_path = vim.fn.stdpath('data') .. '/pending/tasks.json',
  default_category = 'Todo',
  date_format = '%b %d',
  date_syntax = 'due',
  recur_syntax = 'rec',
  someday_date = '9999-12-30',
  max_priority = 3,
  view = {
    default = 'category',
    eol_format = '%c  %r  %d',
    category = {
      order = {},
      folding = true,
    },
    queue = {},
  },
  keymaps = {
    close = 'q',
    toggle = '<CR>',
    view = '<Tab>',
    priority = '!',
    date = 'D',
    undo = 'U',
    filter = 'F',
    open_line = 'o',
    open_line_above = 'O',
    a_task = 'at',
    i_task = 'it',
    a_category = 'aC',
    i_category = 'iC',
    next_header = ']]',
    prev_header = '[[',
    next_task = ']t',
    prev_task = '[t',
    category = 'gc',
    recur = 'gr',
    move_down = 'J',
    move_up = 'K',
    wip = 'gw',
    blocked = 'gb',
  },
  sync = {},
  icons = {
    pending = ' ',
    done = 'x',
    priority = '!',
    wip = '>',
    blocked = '=',
    due = '.',
    recur = '~',
    category = '#',
  },
}

---@type pending.Config?
local _resolved = nil

---@return pending.Config
function M.get()
  if _resolved then
    return _resolved
  end
  local user = vim.g.pending or {}
  _resolved = vim.tbl_deep_extend('force', defaults, user)
  return _resolved
end

---@return nil
function M.reset()
  _resolved = nil
end

---@return pending.ResolvedFolding
function M.resolve_folding()
  local raw = M.get().view.category.folding
  if raw == false then
    return { enabled = false, foldtext = false }
  elseif raw == true or raw == nil then
    return { enabled = true, foldtext = '%c (%n tasks)' }
  end
  return { enabled = true, foldtext = raw.foldtext or false }
end

return M