" Author: Eddie Lebow https://github.com/elebow
" Description: Functions for integrating with Ruby tools

" Find the nearest dir contining "app", "db", and "config", and assume it is
" the root of a Rails app.
function! ale#ruby#FindRailsRoot(buffer) abort
    for l:name in ['app', 'config', 'db']
        let l:dir = fnamemodify(
        \   ale#path#FindNearestDirectory(a:buffer, l:name),
        \   ':h:h'
        \)

        if l:dir isnot# '.'
        \&& isdirectory(l:dir . '/app')
        \&& isdirectory(l:dir . '/config')
        \&& isdirectory(l:dir . '/db')
            return l:dir
        endif
    endfor

    return ''
endfunction

" Find the nearest dir containing a potential ruby project.
function! ale#ruby#FindProjectRoot(buffer) abort
    let l:dir = ale#ruby#FindRailsRoot(a:buffer)

    if isdirectory(l:dir)
      return l:dir
    endif

    for l:name in ['.solargraph.yml', 'Rakefile', 'Gemfile']
        let l:dir = fnamemodify(
        \   ale#path#FindNearestFile(a:buffer, l:name),
        \   ':h'
        \)

        if l:dir isnot# '.' && isdirectory(l:dir)
            return l:dir
        endif
    endfor

    return ''
endfunction