" vim: set fdm=marker et ts=4 sw=4 sts=4:

" Init(): sets up defaults, populates b:pandoc_biblio_bibs {{{1
function! pandoc#bibliographies#Init() abort
    " set up defaults {{{2
    " Places to look for bibliographies {{{3
    " b: bibs named after the current file in the working dir
    " c: any bib in the working dir
    " l: pandoc local dir
    " t: texmf
    " g: append values in g:pandoc#biblio#bibs
    " y: add bibliography specified in yaml header
    "
    if !exists('g:pandoc#biblio#sources')
        let g:pandoc#biblio#sources = 'bcgy'
    endif
    "}}}
    " File extensions to check for {{{3
    if !exists('g:pandoc#biblio#bib_extensions')
        let g:pandoc#biblio#bib_extensions = ['bib', 'bibtex', 'ris', 'mods', 'enl', 'wos', 'medline', 'copac']
    endif
    " }}}
    " Use bibtool for queries? {{{3
    if !exists('g:pandoc#biblio#use_bibtool')
        let g:pandoc#biblio#use_bibtool = 0
    endif
    "}}}
    " Pass extra args to bibtool? {{{3
    if !exists('g:pandoc#biblio#bibtool_extra_args')
        let g:pandoc#biblio#bibtool_extra_args = '-r biblatex'
    endif
    "}}}
    " Files to add to b:pandoc_biblio_bibs if "g" is in g:pandoc#biblio#sources {{{3
    if !exists('g:pandoc#biblio#bibs')
        let g:pandoc#biblio#bibs = []
    endif
    " populate b:pandoc_biblio_bibs {{{2
    let b:pandoc_biblio_bibs = []
    " add bibliographies in yaml header
    if match(g:pandoc#biblio#sources, 'y') > -1
        if exists('b:pandoc_yaml_data')
            if has_key(b:pandoc_yaml_data, 'bibliography') && filereadable(b:pandoc_yaml_data['bibliography'])
                call add(b:pandoc_biblio_bibs, b:pandoc_yaml_data['bibliography'])
            endif
        endif
    endif
    " set up python
    if has('python3')
        py3 import vim_pandoc.bib.vim_completer
    endif
endfunction

" Find_Bibliographies(): gives a list of bibliographies in g:pandoc#biblio#sources {{{1
function! pandoc#bibliographies#Find_Bibliographies() abort
    if has('python3')
        return py3eval('vim_pandoc.bib.vim_completer.find_bibfiles()')
    endif
    return []
endfunction

" GetSuggestions(partkey): returns bibliographic suggestions. {{{1
" called by our omnifunc, if completion is enabled
function! pandoc#bibliographies#GetSuggestions(partkey) abort
    if has('python3')
        let l:sugs = py3eval('vim_pandoc.bib.vim_completer.VimCompleter().get_suggestions(vim.eval("a:partkey"))')
        if len(l:sugs) > 0
            return l:sugs
        else
            return []
        endif
    endif
endfunction