local pickers = require("telescope.pickers")
local finders = require("telescope.finders")
local conf = require("telescope.config").values
local actions = require("telescope.actions")
local action_state = require("telescope.actions.state")
local utils = require("telescope.utils")
local entry_display = require "telescope.pickers.entry_display"

local M = {}

M.setup = function(opts)
  opts = opts or {}
  -- TODO: get report directory from settings or maybe reportctl ini file?
  M.report_dir = opts.report_dir or "~/reports"
  -- do nothing
end

-- Function to get directories in the current directory
M.get_reports = function()
  local report_dir = M.report_dir or "~/reports"
  -- insecure
  local handle = io.popen("find " .. report_dir .. " -maxdepth 2 -mindepth 2 -type d")
  if not handle then return {} end
  local result = handle:read("*a")
  handle:close()
  return vim.split(result, "\n", { trimempty = true })
end

local debug = function(msg, title)
  msg = msg or ""
  title = title or ""
  vim.notify(msg, "debug", { style = "compact", timeout = 10000, title = title })
end

local info = function(msg, title)
  msg = msg or ""
  title = title or ""
  vim.notify(msg, "info", { style = "compact", timeout = 10000, title = title })
end

M.directory_picker = function(opts)
  opts = opts or {}

  local dirs = M.get_reports()

  local displayer = entry_display.create({
    separator = "",
    items = {
      { width = 25 },
      { remaining = true },
    }
  })

  local make_display = function(e)
    -- debug(vim.inspect(e.value))
    local parts = vim.split(e.value, '/', { trimempty = true, plain = true })
    local kunde = parts[#parts - 1]
    local report = parts[#parts]
    local display = kunde .. " " .. report

    local kundeStart = 0
    local kundeEnd = #kunde
    local reportStart = kundeEnd + 1
    local reportEnd = reportStart + #report

    return displayer {
      { kunde,  "TelescopeResultsComment" },
      { report, "TelescopeResultsIdentifier" },
    }
  end


  local reportFinder = finders.new_table({
    results = dirs,
    entry_maker = function(entry)
      return {
        value = entry,
        ordinal = entry,
        display = make_display,
      }
    end
  })

  pickers.new(opts, {
    prompt_title = "Select report",
    finder = reportFinder,
    sorter = conf.generic_sorter(opts),
    attach_mappings = function(prompt_bufnr, map)
      local function set_cwd()
        local selection = action_state.get_selected_entry()
        if selection then
          local selected_dir = selection.value
          vim.cmd("cd " .. selected_dir)
          info(selected_dir, "Switched report")
        end
        actions.close(prompt_bufnr)
      end

      map("i", "<CR>", set_cwd)
      map("n", "<CR>", set_cwd)

      return true
    end,
  }):find()
end

return M