local M = {}

function M.install_pm()
  local path = vim.fn.stdpath('data') .. '/site/pack/paqs/opt/paq-nvim'
  if not vim.uv.fs_stat(path) then
    local repo = 'https://github.com/savq/paq-nvim.git'
    local cmd = { 'git', 'clone', '--depth=1', repo, path }
    vim.system(cmd):wait()
    print("Installed: paq")
  end
end

function M.install_packages()
    print("Installing packages...")
  vim.cmd.packadd('paq-nvim')
  local packages = require('setup.packages').get()
  local paq = require('paq')

  paq(packages)

  -- capture list of jobs before starting
  local install_list = paq.install()

  -- if nothing to install, skip wait
  if not install_list or vim.tbl_isempty(install_list) then
    vim.cmd('packloadall')
    vim.cmd('silent! helptags ALL')
    return
  end

  local done = false
  vim.api.nvim_create_autocmd('User', {
    pattern = 'PaqDoneInstall',
    once = true,
    callback = function()
      vim.cmd('packloadall')
      vim.cmd('silent! helptags ALL')
      done = true
    end,
  })

  -- wait until done or timeout
  vim.wait(300000, function()
    return done
  end, 200)
end



function M.install_languages()
  local lm = require('plugins.language-manager')
  lm.invalidate_cache()
  lm.load_specs()
  lm.install()
end

vim.api.nvim_create_user_command('InstallAll', function()
  M.install_pm()
  M.install_packages()
  M.install_languages()
end, {})

vim.api.nvim_create_user_command('FetchLspConfigs', function()
  local base_url = 'https://raw.githubusercontent.com/neovim/nvim-lspconfig/master/lsp/'

  local lm = require('plugins.language-manager')
  lm.invalidate_cache()
  local general = lm.load_specs()

  local lsp_dir = vim.fs.joinpath(vim.fn.getcwd(), 'lsp')
  vim.fn.mkdir(lsp_dir, 'p')

  for _, name in ipairs(general.language_servers) do
    local file = vim.fs.joinpath(lsp_dir, name .. '.lua')
    if vim.fn.filereadable(file) == 0 then
      local url = base_url .. name .. '.lua'
      local cmd = string.format('curl -fsSL -o %q %q', file, url)
      vim.fn.system(cmd)
      if vim.v.shell_error ~= 0 then
        vim.notify('Failed to fetch ' .. name .. '.lua', vim.log.levels.ERROR)
        vim.fn.delete(file)
      else
        vim.notify('Fetched ' .. name .. '.lua', vim.log.levels.INFO)
      end
    else
      vim.notify('Skipped existing ' .. name .. '.lua', vim.log.levels.INFO)
    end
  end
end, { desc = 'Fetch default LSP configs into ./lsp in cwd' })

return M