" Author: w0rp - <devw0rp@gmail.com>
" Description: pug-lint for checking Pug/Jade files.

call ale#Set('pug_puglint_options', '')
call ale#Set('pug_puglint_executable', 'pug-lint')
call ale#Set('pug_puglint_use_global', get(g:, 'ale_use_global_executables', 0))

function! s:FindConfig(buffer) abort
    for l:filename in [
    \   '.pug-lintrc',
    \   '.pug-lintrc.js',
    \   '.pug-lintrc.json',
    \   'package.json',
    \]
        let l:config = ale#path#FindNearestFile(a:buffer, l:filename)

        if !empty(l:config)
            return l:config
        endif
    endfor

    return ''
endfunction

function! ale_linters#pug#puglint#GetCommand(buffer) abort
    let l:options = ale#Var(a:buffer, 'pug_puglint_options')
    let l:config = s:FindConfig(a:buffer)

    return '%e' . ale#Pad(l:options)
    \   . (!empty(l:config) ? ' -c ' . ale#Escape(l:config) : '')
    \   . ' -r inline %t'
endfunction

function! ale_linters#pug#puglint#Handle(buffer, lines) abort
    for l:line in a:lines[:10]
        if l:line =~# '^SyntaxError: '
            return [{
            \   'lnum': 1,
            \   'text': 'puglint configuration error (type :ALEDetail for more information)',
            \   'detail': join(a:lines, "\n"),
            \}]
        endif
    endfor

    return ale#handlers#unix#HandleAsError(a:buffer, a:lines)
endfunction

call ale#linter#Define('pug', {
\   'name': 'puglint',
\   'executable': {b -> ale#path#FindExecutable(b, 'pug_puglint', [
\       'node_modules/.bin/pug-lint',
\   ])},
\   'output_stream': 'stderr',
\   'command': function('ale_linters#pug#puglint#GetCommand'),
\   'callback': 'ale_linters#pug#puglint#Handle',
\})