if exists('g:loaded_nvim_lsp_installer') | finish | endif
let g:loaded_nvim_lsp_installer = 1

let s:save_cpo = &cpo
set cpo&vim

function! s:MapServerName(servers) abort
    return map(a:servers, {_, val -> val.name})
endfunction

function! s:LspInstallCompletion(...) abort
    return join(sort(s:MapServerName(luaeval("require'nvim-lsp-installer'.get_available_servers()"))), "\n")
endfunction

function! s:LspUninstallCompletion(...) abort
    return join(sort(s:MapServerName(luaeval("require'nvim-lsp-installer'.get_installed_servers()"))), "\n")
endfunction

function! s:LspInstall(server_name) abort
    call luaeval("require'nvim-lsp-installer'.install(_A)", a:server_name)
endfunction

function! s:LspUninstall(server_name) abort
    call luaeval("require'nvim-lsp-installer'.uninstall(_A)", a:server_name)
endfunction

function! s:LspUninstallAll() abort
    for server in s:MapServerName(luaeval("require'nvim-lsp-installer'.get_installed_servers()"))
        call s:LspUninstall(server)
    endfor
endfunction

function! s:LspPrintInstalled() abort
    echo s:MapServerName(luaeval("require'nvim-lsp-installer'.get_installed_servers()"))
endfunction

command! -nargs=1 -complete=custom,s:LspInstallCompletion LspInstall exe s:LspInstall("<args>")
command! -nargs=1 -complete=custom,s:LspUninstallCompletion LspUninstall exe s:LspUninstall("<args>")

command! LspUninstallAll call s:LspUninstallAll()
command! LspPrintInstalled call s:LspPrintInstalled()

autocmd User LspAttachBuffers lua require"nvim-lsp-installer".lsp_attach_proxy()

let &cpo = s:save_cpo
unlet s:save_cpo