nuwiki/autoload/nuwiki/commands.vim

" autoload/nuwiki/commands.vim — Vim-side wrappers around the LSP
" commands the server advertises (Phase 19).
"
" Lives in autoload/ so the cost is paid only when a `:Vimwiki*` /
" `:Nuwiki*` command is actually invoked. Dispatches via vim-lsp's
" `lsp#send_request`. coc.nvim's command surface is rich enough that
" users should just call `:CocCommand nuwiki.x` directly there — this
" file targets the vim-lsp path.

let s:server = 'nuwiki'

function! s:buf_uri() abort
  return 'file://' . fnamemodify(expand('%:p'), ':p')
endfunction

function! s:cursor_position() abort
  return {
        \ 'textDocument': { 'uri': s:buf_uri() },
        \ 'position': { 'line': line('.') - 1, 'character': col('.') - 1 },
        \ }
endfunction

function! s:has_vimlsp() abort
  return exists('*lsp#send_request')
endfunction

function! s:exec(command, arguments, ...) abort
  if !s:has_vimlsp()
    echohl ErrorMsg
    echom 'nuwiki: vim-lsp not loaded; cannot run ' . a:command
    echohl None
    return
  endif
  let l:opts = {
        \ 'method': 'workspace/executeCommand',
        \ 'params': { 'command': a:command, 'arguments': a:arguments },
        \ }
  if a:0 >= 1
    let l:opts['on_notification'] = a:1
  endif
  call lsp#send_request(s:server, l:opts)
endfunction

function! s:open_uri_from(response, ...) abort
  let l:result = get(get(a:response, 'response', {}), 'result', {})
  if type(l:result) != type({}) || !has_key(l:result, 'uri')
    return
  endif
  let l:path = substitute(l:result['uri'], '^file://', '', '')
  let l:cmd = a:0 >= 1 ? a:1 : 'edit'
  execute l:cmd . ' ' . fnameescape(l:path)
endfunction

function! s:notify_deferred(name) abort
  echohl WarningMsg
  echom 'nuwiki: ' . a:name . ' is not yet implemented — see SPEC §13.1'
  echohl None
endfunction

" ===== Wiki picker =====

function! nuwiki#commands#wiki_index(count) abort
  let l:args = a:count > 0 ? [{ 'wiki': a:count - 1 }] : [{}]
  call s:exec('nuwiki.wiki.openIndex', l:args,
        \ function('s:open_uri_from'))
endfunction

" Vim equivalent of the Lua `wiki_ui_select` — receives the list, asks
" via `inputlist()` (no `vim.ui.select` on plain Vim), then opens.
function! nuwiki#commands#wiki_ui_select() abort
  call s:exec('nuwiki.wiki.select', [{}],
        \ function('s:wiki_pick'))
endfunction

function! s:wiki_pick(notification) abort
  let l:rows = get(get(a:notification, 'response', {}), 'result', [])
  if type(l:rows) != type([]) || empty(l:rows)
    echom 'nuwiki: no wikis configured'
    return
  endif
  let l:prompt = ['Pick a wiki:']
  let l:i = 0
  for l:w in l:rows
    let l:i += 1
    call add(l:prompt, l:i . '. ' . get(l:w, 'name', '?')
          \ . ' (' . get(l:w, 'root', '?') . ')')
  endfor
  let l:choice = inputlist(l:prompt)
  if l:choice < 1 || l:choice > len(l:rows)
    return
  endif
  let l:wiki_id = get(l:rows[l:choice - 1], 'id', l:choice - 1)
  call s:exec('nuwiki.wiki.openIndex', [{ 'wiki': l:wiki_id }],
        \ function('s:open_uri_from'))
endfunction

" ===== Smart <CR>: follow or wrap-then-follow =====

function! s:cursor_inside_wikilink() abort
  let l:line = getline('.')
  let l:col = col('.')
  let l:i = 1
  let l:open = 0
  while l:i < strlen(l:line)
    if strpart(l:line, l:i - 1, 2) ==# '[['
      let l:open = l:i
      let l:i += 2
    elseif strpart(l:line, l:i - 1, 2) ==# ']]'
      let l:open = 0
      let l:i += 2
    else
      let l:i += 1
    endif
    if l:i > l:col
      break
    endif
  endwhile
  return l:open > 0
endfunction

function! s:wrap_cword_as_wikilink() abort
  let l:word = expand('<cword>')
  if l:word ==# ''
    return 0
  endif
  let l:line = getline('.')
  let l:col = col('.')
  " Find word boundaries around cursor (1-based).
  let l:left = l:col
  while l:left > 1 && strpart(l:line, l:left - 2, 1) =~# '[A-Za-z0-9_-]'
    let l:left -= 1
  endwhile
  let l:right = l:col
  while l:right <= strlen(l:line) && strpart(l:line, l:right - 1, 1) =~# '[A-Za-z0-9_-]'
    let l:right += 1
  endwhile
  let l:word_real = strpart(l:line, l:left - 1, l:right - l:left)
  if l:word_real ==# ''
    return 0
  endif
  let l:new_line = strpart(l:line, 0, l:left - 1) . '[[' . l:word_real . ']]' . strpart(l:line, l:right - 1)
  call setline('.', l:new_line)
  call cursor(line('.'), l:left + 2)
  return 1
endfunction

" Two-step behaviour matching vimwiki:
"   1. First press on a bare word → wrap it as `[[word]]` and stop.
"   2. Cursor is now inside `[[…]]`; next press follows the link.
"   3. Press inside an existing `[[…]]` follows immediately.
function! nuwiki#commands#follow_link_or_create() abort
  if s:cursor_inside_wikilink()
    if exists(':LspDefinition') == 2
      LspDefinition
    else
      echohl WarningMsg
      echom 'nuwiki: :LspDefinition unavailable; install vim-lsp'
      echohl None
    endif
    return
  endif
  if s:wrap_cword_as_wikilink()
    " Wrapped — wait for the user's second <CR> to follow.
    return
  endif
  " Nothing to wrap — fall through.
  if exists(':LspDefinition') == 2
    LspDefinition
  endif
endfunction

" Pure-VimL bullet-continuation for `o` / `O` — mirrors the Lua side
" so re-pressing the key keeps the list marker (and checkbox if any).
function! nuwiki#commands#open_below_with_bullet() abort
  let l:line = getline('.')
  let l:match = matchlist(l:line, '^\(\s*\)\([-*#]\)\s')
  if empty(l:match)
    call feedkeys('o', 'n')
    return
  endif
  let l:prefix = l:match[1] . l:match[2] . ' '
  if l:line =~# '^\s*[-*#]\s\+\[[ xXoO.\-]\]'
    let l:prefix .= '[ ] '
  endif
  call feedkeys('o' . l:prefix, 'n')
endfunction

function! nuwiki#commands#open_above_with_bullet() abort
  let l:line = getline('.')
  let l:match = matchlist(l:line, '^\(\s*\)\([-*#]\)\s')
  if empty(l:match)
    call feedkeys('O', 'n')
    return
  endif
  let l:prefix = l:match[1] . l:match[2] . ' '
  call feedkeys('O' . l:prefix, 'n')
endfunction

" ===== Heading navigation (pure VimL) =====

function! s:heading_level(line) abort
  let l:lead = matchstr(a:line, '^\s*\zs=\+\ze\s')
  if l:lead ==# ''
    return 0
  endif
  let l:trail = matchstr(a:line, '\s\zs=\+\ze\s*$')
  if len(l:trail) != len(l:lead)
    return 0
  endif
  return len(l:lead)
endfunction

function! s:current_heading_level() abort
  let l:lnum = line('.')
  while l:lnum > 0
    let l:lvl = s:heading_level(getline(l:lnum))
    if l:lvl > 0
      return [l:lvl, l:lnum]
    endif
    let l:lnum -= 1
  endwhile
  return [0, 0]
endfunction

function! s:jump_heading(direction, predicate) abort
  let l:total = line('$')
  let l:i = line('.') + a:direction
  while l:i >= 1 && l:i <= l:total
    let l:lvl = s:heading_level(getline(l:i))
    if l:lvl > 0 && a:predicate(l:lvl, l:i)
      call cursor(l:i, 1)
      return
    endif
    let l:i += a:direction
  endwhile
endfunction

function! nuwiki#commands#next_header() abort
  call s:jump_heading(1, {l, n -> 1})
endfunction
function! nuwiki#commands#prev_header() abort
  call s:jump_heading(-1, {l, n -> 1})
endfunction
function! nuwiki#commands#next_sibling_header() abort
  let [l:lvl, _] = s:current_heading_level()
  call s:jump_heading(1, {l, n -> l <= l:lvl})
endfunction
function! nuwiki#commands#prev_sibling_header() abort
  let [l:lvl, _] = s:current_heading_level()
  call s:jump_heading(-1, {l, n -> l <= l:lvl})
endfunction
function! nuwiki#commands#parent_header() abort
  let [l:lvl, _] = s:current_heading_level()
  if l:lvl <= 1
    return
  endif
  call s:jump_heading(-1, {l, n -> l < l:lvl})
endfunction

function! nuwiki#commands#wiki_tab_index(count) abort
  let l:args = a:count > 0 ? [{ 'wiki': a:count - 1 }] : [{}]
  call s:exec('nuwiki.wiki.tabOpenIndex', l:args,
        \ {n -> s:open_uri_from(n, 'tabedit')})
endfunction

function! nuwiki#commands#wiki_goto_page(name) abort
  let l:name = a:name
  if l:name ==# ''
    let l:name = input('Goto page: ')
  endif
  if l:name ==# ''
    return
  endif
  call s:exec('nuwiki.wiki.gotoPage', [{ 'page': l:name }],
        \ function('s:open_uri_from'))
endfunction

" ===== Diary =====

function! s:diary_open(cmd_name) abort
  call s:exec(a:cmd_name, [{ 'uri': s:buf_uri() }],
        \ function('s:open_uri_from'))
endfunction

function! nuwiki#commands#diary_today()     abort | call s:diary_open('nuwiki.diary.openToday')     | endfunction
function! nuwiki#commands#diary_yesterday() abort | call s:diary_open('nuwiki.diary.openYesterday') | endfunction
function! nuwiki#commands#diary_tomorrow()  abort | call s:diary_open('nuwiki.diary.openTomorrow')  | endfunction
function! nuwiki#commands#diary_index()     abort | call s:diary_open('nuwiki.diary.openIndex')     | endfunction
function! nuwiki#commands#diary_next()      abort | call s:diary_open('nuwiki.diary.next')          | endfunction
function! nuwiki#commands#diary_prev()      abort | call s:diary_open('nuwiki.diary.prev')          | endfunction

function! nuwiki#commands#diary_generate_index() abort
  call s:exec('nuwiki.diary.generateIndex', [{ 'uri': s:buf_uri() }])
endfunction

" ===== List + heading editing =====

function! s:exec_pos(cmd) abort
  let l:p = s:cursor_position()
  let l:args = [{ 'uri': l:p['textDocument']['uri'], 'position': l:p['position'] }]
  call s:exec(a:cmd, l:args)
endfunction

function! nuwiki#commands#toggle_list_item()  abort | call s:exec_pos('nuwiki.list.toggleCheckbox') | endfunction
function! nuwiki#commands#cycle_list_item()   abort | call s:exec_pos('nuwiki.list.cycleCheckbox')  | endfunction
function! nuwiki#commands#reject_list_item()  abort | call s:exec_pos('nuwiki.list.rejectCheckbox') | endfunction
function! nuwiki#commands#heading_add()       abort | call s:exec_pos('nuwiki.heading.addLevel')    | endfunction
function! nuwiki#commands#heading_remove()    abort | call s:exec_pos('nuwiki.heading.removeLevel') | endfunction

function! nuwiki#commands#next_task() abort
  let l:p = s:cursor_position()
  let l:args = [{ 'uri': l:p['textDocument']['uri'], 'position': l:p['position'] }]
  call s:exec('nuwiki.list.nextTask', l:args,
        \ {n -> s:goto_location(n)})
endfunction

function! s:goto_location(notification) abort
  let l:loc = get(get(a:notification, 'response', {}), 'result', {})
  if type(l:loc) != type({}) || !has_key(l:loc, 'range')
    return
  endif
  let l:line = l:loc['range']['start']['line'] + 1
  let l:col = l:loc['range']['start']['character'] + 1
  call cursor(l:line, l:col)
endfunction

" ===== Generation + workspace =====

function! nuwiki#commands#toc_generate()     abort | call s:exec('nuwiki.toc.generate',   [{'uri': s:buf_uri()}]) | endfunction
function! nuwiki#commands#links_generate()   abort | call s:exec('nuwiki.links.generate', [{'uri': s:buf_uri()}]) | endfunction

function! nuwiki#commands#check_links() abort
  call s:exec('nuwiki.workspace.checkLinks', [{ 'uri': s:buf_uri() }],
        \ {n -> s:results_to_qf(n, 'broken links')})
endfunction

function! nuwiki#commands#find_orphans() abort
  call s:exec('nuwiki.workspace.findOrphans', [{ 'uri': s:buf_uri() }],
        \ {n -> s:results_to_qf(n, 'orphans')})
endfunction

function! s:results_to_qf(notification, title) abort
  let l:rows = get(get(a:notification, 'response', {}), 'result', [])
  if type(l:rows) != type([]) || empty(l:rows)
    echom 'nuwiki: no ' . a:title
    return
  endif
  let l:items = []
  for l:row in l:rows
    let l:path = substitute(get(l:row, 'uri', ''), '^file://', '', '')
    let l:lnum = 1
    let l:col = 1
    if has_key(l:row, 'range')
      let l:lnum = l:row['range']['start']['line'] + 1
      let l:col = l:row['range']['start']['character'] + 1
    endif
    let l:text = get(l:row, 'message', get(l:row, 'name', ''))
    call add(l:items, { 'filename': l:path, 'lnum': l:lnum, 'col': l:col, 'text': l:text })
  endfor
  call setqflist([], ' ', { 'title': 'nuwiki ' . a:title, 'items': l:items })
  copen
endfunction

" ===== Tags =====

function! nuwiki#commands#tags_search(query) abort
  let l:q = a:query
  if l:q ==# ''
    let l:q = input('Search tags: ')
  endif
  call s:exec('nuwiki.tags.search', [{ 'uri': s:buf_uri(), 'query': l:q }],
        \ {n -> s:results_to_qf(n, 'tag matches')})
endfunction

function! nuwiki#commands#tags_generate_links(tag) abort
  let l:args = { 'uri': s:buf_uri() }
  if a:tag !=# ''
    let l:args['tag'] = a:tag
  endif
  call s:exec('nuwiki.tags.generateLinks', [l:args])
endfunction

function! nuwiki#commands#tags_rebuild() abort
  call s:exec('nuwiki.tags.rebuild', [{ 'uri': s:buf_uri() }])
endfunction

" ===== HTML export =====

function! nuwiki#commands#export_current()    abort | call s:exec('nuwiki.export.currentToHtml',  [{'uri': s:buf_uri()}]) | endfunction
function! nuwiki#commands#export_all()        abort | call s:exec('nuwiki.export.allToHtml',      [{'uri': s:buf_uri()}]) | endfunction
function! nuwiki#commands#export_all_force()  abort | call s:exec('nuwiki.export.allToHtmlForce', [{'uri': s:buf_uri()}]) | endfunction
function! nuwiki#commands#export_rss()        abort | call s:exec('nuwiki.export.rss',            [{'uri': s:buf_uri()}]) | endfunction

function! nuwiki#commands#export_browse() abort
  call s:exec('nuwiki.export.browse', [{ 'uri': s:buf_uri() }],
        \ {n -> s:open_browser(n)})
endfunction

function! s:open_browser(notification) abort
  let l:result = get(get(a:notification, 'response', {}), 'result', {})
  let l:url = get(l:result, 'browse', '')
  if l:url ==# ''
    return
  endif
  if has('mac')
    silent execute '!open ' . shellescape(l:url, 1) . ' &'
  elseif has('unix')
    silent execute '!xdg-open ' . shellescape(l:url, 1) . ' &'
  else
    echom 'nuwiki: exported → ' . l:url
  endif
endfunction

" ===== File ops =====

function! nuwiki#commands#delete_file() abort
  if input('Delete current page? [y/N] ') !~? '^y'
    return
  endif
  call s:exec('nuwiki.file.delete', [{ 'uri': s:buf_uri() }])
endfunction

function! nuwiki#commands#rename_file() abort
  if exists('*lsp#rename')
    LspRename
  else
    echohl WarningMsg
    echom 'nuwiki: :LspRename unavailable; install vim-lsp'
    echohl None
  endif
endfunction

" ===== §13.1 deferred =====

function! nuwiki#commands#list_change_lvl()        abort | call s:notify_deferred(':VimwikiListChangeLvl')        | endfunction
function! nuwiki#commands#list_remove_done()       abort | call s:notify_deferred(':VimwikiRemoveDone')           | endfunction
function! nuwiki#commands#table_insert()           abort | call s:notify_deferred(':VimwikiTable')                | endfunction
function! nuwiki#commands#table_move_left()        abort | call s:notify_deferred(':VimwikiTableMoveColumnLeft')  | endfunction
function! nuwiki#commands#table_move_right()       abort | call s:notify_deferred(':VimwikiTableMoveColumnRight') | endfunction
function! nuwiki#commands#colorize(color)          abort | call s:notify_deferred(':VimwikiColorize')             | endfunction
function! nuwiki#commands#paste_link()             abort | call s:notify_deferred(':VimwikiPasteLink')            | endfunction
function! nuwiki#commands#paste_url()              abort | call s:notify_deferred(':VimwikiPasteUrl')             | endfunction