"=============================================================================
" java.vim --- SpaceVim lang#java layer
" Copyright (c) 2016-2023 Wang Shidong & Contributors
" Author: Wang Shidong < wsdjeg@outlook.com >
" URL: https://spacevim.org
" License: GPLv3
"=============================================================================

""
" @section lang#java, layers-lang-java
" @parentsection layers
" This layer is for java development, disabled by default, to enable this
" layer, add following snippet to your SpaceVim configuration file.
" >
"   [[layers]]
"     name = 'lang#java'
" <
" @subsection Layer options
"
" 1. `format_on_save`: Enable/disabled code formatting when saving current file.
"   Disabled by default.
" 2. `java_formatter_jar`: Set the full path of google's java formatter jar.
" 3. `java_file_head`: The default file header for new java file.
"   by default it is: 
" >
"   [[layers]]
"     name = 'lang#java'
"     java_file_head = [
"       '/**',
"       ' * @author : `fnamemodify(expand("~"), ":t")`',
"       ' * @created : `strftime("%Y-%m-%d")`',
"       '**/',
"       ''
"     ]
" <
" 4. `enabled_linters`: Set the enabled linters for java, default is `['javac']`.
" @subsection Mappings
" >
"   Import key bindings:
"
"   Mode      Key           Function
"   -------------------------------------------------------------
"   normal    SPC l I       import missing classes
"   normal    SPC l R       remove unused imports
"   normal    SPC l i       smart import class under cursor
"   insert    <c-j>I        import missing imports
"   insert    <c-j>R        remove unused imports
"   insert    <c-j>i        smart import class under cursor
"
"   Generate key bindings:
"
"   Mode      Key           Function
"   -------------------------------------------------------------
"   normal    SPC l g A     generate accessors
"   normal    SPC l g s     generate setter accessor
"   normal    SPC l g g     generate getter accessor
"   normal    SPC l g a     generate setter and getter accessor
"   normal    SPC l g t     generate toString function
"   normal    SPC l g e     generate equals and hashcode function
"   normal    SPC l g c     generate constructor
"   normal    SPC l g C     generate default constructor
"   insert    <c-j>s        generate setter accessor
"   insert    <c-j>g        generate getter accessor
"   insert    <c-j>a        generate getter and setter accessor
"   visual    SPC l g s     generate setter accessor
"   visual    SPC l g g     generate getter accessor
"   visual    SPC l g a     generate setter and getter accessor
"
"   Maven key bindings:
"
"   Mode      Key           Function
"   -------------------------------------------------------------
"   normal    SPC l m i     run maven clean install
"   normal    SPC l m I     run maven install
"   normal    SPC l m p     run one already goal from list
"   normal    SPC l m r     run maven goals
"   normal    SPC l m R     run one maven goal
"   normal    SPC l m t     run maven test
"
"   Gradle key bindings:
"
"   Mode      Key           Function
"   -------------------------------------------------------------
"   normal    SPC l g r     run gradle run 
"   normal    SPC l g b     run gradle build
"   normal    SPC l g B     run gradle clean build
"   normal    SPC l g t     run gradle test
"
"   Jump key bindings:
"
"   Mode      Key           Function
"   -------------------------------------------------------------
"   normal    SPC l j a     jump to alternate file
"
"   REPL key bindings:
"
"   Mode      Key           Function
"   -------------------------------------------------------------
"   normal    SPC l s i     start a jshell inferior REPL process
"   normal    SPC l s b     send buffer and keep code buffer focused
"   normal    SPC l s l     send line and keep code buffer focused
"   normal    SPC l s s     send selection text and keep code buffer focused
" <
" @subsection Code formatting
" To make neoformat support java file, you should install uncrustify.
" or download google's formater jar from:
" https://github.com/google/google-java-format
"
" and set the layer option `java_formatter_jar` to the path of the jar.
" >
"   [[layers]]
"     name = 'lang#java'
"     java_formatter_jar = 'path/to/google-java-format.jar'
" <



if exists('s:java_formatter_jar')
  finish
endif


let s:java_formatter_jar = ''
let s:format_on_save = 0
let s:java_file_head = [
      \ '/**',
      \ ' * @author : `fnamemodify(expand("~"), ":t")`',
      \ ' * @created : `strftime("%Y-%m-%d")`',
      \ '**/',
      \ ''
      \ ]
let s:java_interpreter = 'java'
let s:enabled_linters = ['javac']

function! SpaceVim#layers#lang#java#plugins() abort
  let plugins = []
  if !SpaceVim#layers#lsp#check_filetype('java')
        \ && !SpaceVim#layers#lsp#check_server('jdtls')
    call add(plugins, [g:_spacevim_root_dir . 'bundle/vim-javacomplete2', { 'on_ft' : ['java','jsp'], 'loadconf' : 1}])
  endif
  call add(plugins, [g:_spacevim_root_dir . 'bundle/JavaUnit.vim', {'on_ft' : 'java'}])
  call add(plugins, [g:_spacevim_root_dir . 'bundle/java_getset.vim', {'on_ft' : 'java'}])
  call add(plugins, [g:_spacevim_root_dir . 'bundle/vim-dict', {'on_ft' : 'java'}])
  return plugins
endfunction

function! SpaceVim#layers#lang#java#config() abort
  call SpaceVim#mapping#space#regesit_lang_mappings('java', function('s:language_specified_mappings'))
  call SpaceVim#plugins#repl#reg('java', 'jshell')
  call add(g:spacevim_project_rooter_patterns, 'pom.xml')
  call add(g:spacevim_project_rooter_patterns, 'build.gradle')

  " for neomake 
  " neomake will be disabled when lsp is enabled for java.
  if SpaceVim#layers#lsp#check_filetype('java')
        \ || SpaceVim#layers#lsp#check_server('jdtls')
    let g:neomake_java_enabled_makers = []
  else
    if g:spacevim_lint_engine ==# 'neomake'
      let g:neomake_java_javac_options = ['-J-Duser.language=en'] 
      let g:neomake_java_enabled_makers = s:enabled_linters
      for lint in g:neomake_java_enabled_makers
        let g:neomake_java_{lint}_remove_invalid_entries = 1
      endfor
    endif
  endif

  " defined JDTLS_HOME

  if empty($JDTLS_HOME) && !empty($Scoop)
    let $JDTLS_HOME = $Scoop . '/apps/jdtls/current' 
  endif

  if SpaceVim#layers#lsp#check_filetype('java')
        \ || SpaceVim#layers#lsp#check_server('jdtls')
    call SpaceVim#mapping#gd#add('java', function('SpaceVim#lsp#go_to_def'))
  else
    call SpaceVim#mapping#gd#add('java', function('s:go_to_def'))
  endif
  augroup SpaceVim_lang_java
    au!
    if !SpaceVim#layers#lsp#check_filetype('java')
          \ && !SpaceVim#layers#lsp#check_server('jdtls')
      " omnifunc will be used only when no java lsp support
      autocmd FileType java setlocal omnifunc=javacomplete#Complete
    endif
    autocmd FileType jsp call <SID>JspFileTypeInit()
    autocmd FileType java set comments=sO:*\ -,mO:*\ \ ,exO:*/,s1:/*,mb:*,ex:*/,://
  augroup END
  let g:neoformat_enabled_java = get(g:, 'neoformat_enabled_java', ['googlefmt'])
  let g:neoformat_java_googlefmt = {
        \ 'exe': 'java',
        \ 'args': ['-jar', s:java_formatter_jar, '-'],
        \ 'stdin': 1,
        \ }
  try
    let g:neoformat_enabled_java += neoformat#formatters#java#enabled()
  catch
  endtry

  " Format on save
  if s:format_on_save
    call SpaceVim#layers#format#add_filetype({
          \ 'filetype' : 'java',
          \ 'enable' : 1,
          \ })
  endif
  call SpaceVim#layers#edit#add_ft_head_tamplate('java', s:java_file_head)
  call SpaceVim#plugins#projectmanager#reg_callback(function('s:handle_java_project_changed'))
  call SpaceVim#plugins#tasks#reg_provider(function('s:maven_tasks'))
endfunction

function! s:maven_tasks() abort
  let detect_task = {}
  let conf = {}
  if filereadable('pom.xml')
    call extend(detect_task, {
          \ 'compile' : {'command' : 'mvn', 'args' : ['compile'], 'isDetected' : 1, 'detectedName' : 'mvn:'}
          \ })
  endif
  return detect_task
endfunction

function! s:handle_java_project_changed() abort
  try
    call javacomplete#classpath#classpath#BuildClassPath()
  catch
  endtry
endfunction

function! s:JspFileTypeInit() abort
  setlocal omnifunc=javacomplete#Complete
  inoremap . <c-r>=OnmiConfigForJsp()<cr>
endfunction

function! s:language_specified_mappings() abort

  let g:_spacevim_mappings_space.l = {'name' : '+Language Specified'}
  imap <silent><buffer> <C-j>I <Plug>(JavaComplete-Imports-AddMissing)
  imap <silent><buffer> <C-j>R <Plug>(JavaComplete-Imports-RemoveUnused)
  imap <silent><buffer> <C-j>i <Plug>(JavaComplete-Imports-AddSmart)
  imap <silent><buffer> <C-j>s <Plug>(JavaComplete-Generate-AccessorSetter)
  imap <silent><buffer> <C-j>g <Plug>(JavaComplete-Generate-AccessorGetter)
  imap <silent><buffer> <C-j>a <Plug>(JavaComplete-Generate-AccessorSetterGetter)
  imap <silent><buffer> <C-j>jM <Plug>(JavaComplete-Generate-AbstractMethods)
  " Import key bindings
  call SpaceVim#mapping#space#langSPC('nmap', ['l','I'],
        \ '<Plug>(JavaComplete-Imports-AddMissing)',
        \ 'Import missing classes', 0)
  call SpaceVim#mapping#space#langSPC('nmap', ['l','R'],
        \ '<Plug>(JavaComplete-Imports-RemoveUnused)',
        \ 'Remove unused classes', 0)
  call SpaceVim#mapping#space#langSPC('nmap', ['l','i'],
        \ '<Plug>(JavaComplete-Imports-AddSmart)',
        \ 'Smart import class under cursor', 0)

  " Generate key bindings
  let g:_spacevim_mappings_space.l.g = {'name' : '+Generate'}
  call SpaceVim#mapping#space#langSPC('nmap', ['l', 'g', 'A'],
        \ '<Plug>(JavaComplete-Generate-Accessors)',
        \ 'generate setter accessor', 0)
  call SpaceVim#mapping#space#langSPC('nmap', ['l', 'g', 's'],
        \ '<Plug>(JavaComplete-Generate-AccessorSetter)',
        \ 'generate setter accessor', 0)
  call SpaceVim#mapping#space#langSPC('nmap', ['l', 'g', 'g'],
        \ '<Plug>(JavaComplete-Generate-AccessorGetter)',
        \ 'generate getter accessor', 0)
  call SpaceVim#mapping#space#langSPC('nmap', ['l', 'g', 'a'],
        \ '<Plug>(JavaComplete-Generate-AccessorSetterGetter)',
        \ 'generate setter and getter accessor', 0)
  call SpaceVim#mapping#space#langSPC('nmap', ['l', 'g', 'M'],
        \ '<Plug>(JavaComplete-Generate-AbstractMethods)',
        \ 'Generate abstract methods', 0)
  call SpaceVim#mapping#space#langSPC('nmap', ['l', 'g', 'c'],
        \ '<Plug>(JavaComplete-Generate-Constructor)',
        \ 'Generate constructor', 0)
  call SpaceVim#mapping#space#langSPC('nmap', ['l', 'g', 'C'],
        \ '<Plug>(JavaComplete-Generate-DefaultConstructor)',
        \ 'Generate default constructor', 0)
  call SpaceVim#mapping#space#langSPC('nmap', ['l', 'g', 'e'],
        \ '<Plug>(JavaComplete-Generate-EqualsAndHashCode)',
        \ 'Generate equals functions', 0)
  call SpaceVim#mapping#space#langSPC('nmap', ['l', 'g', 't'],
        \ '<Plug>(JavaComplete-Generate-ToString)',
        \ 'Generate toString function', 0)
  call SpaceVim#mapping#space#langSPC('nmap', ['l', 'g', 'n'],
        \ '<Plug>(JavaComplete-Generate-NewClass)',
        \ 'Generate NewClass in current Package', 0)

  " execute
  let g:_spacevim_mappings_space.l.r = {'name' : '+Run'}
  " run main method
  call SpaceVim#mapping#space#langSPC('nmap', ['l','r', 'm'], 'JavaUnitTestMain', 'Run main method', 1)
  call SpaceVim#mapping#space#langSPC('nmap', ['l','r', 'c'], 'JavaUnitExec', 'Run current method', 1)
  call SpaceVim#mapping#space#langSPC('nmap', ['l','r', 'a'], 'JavaUnitTestAll', 'Run all test methods', 1)

  " maven
  let g:_spacevim_mappings_space.l.m = {'name' : '+Maven'}
  call SpaceVim#mapping#space#langSPC('nnoremap', ['l','m', 'i'], 'call call('
        \ . string(function('s:execCMD')) . ', ["mvn clean install"])',
        \ 'Run maven clean install', 1)
  call SpaceVim#mapping#space#langSPC('nnoremap', ['l','m', 'I'], 'call call('
        \ . string(function('s:execCMD')) . ', ["mvn install"])',
        \ 'Run maven install', 1)
  call SpaceVim#mapping#space#langSPC('nnoremap', ['l','m', 't'], 'call call('
        \ . string(function('s:execCMD')) . ', ["mvn test"])',
        \ 'Run maven test', 1)
  call SpaceVim#mapping#space#langSPC('nnoremap', ['l','m', 'c'], 'call call('
        \ . string(function('s:execCMD')) . ', ["mvn compile"])',
        \ 'Run maven compile', 1)
  call SpaceVim#mapping#space#langSPC('nnoremap', ['l','m', 'r'], 'call call('
        \ . string(function('s:execCMD')) . ', ["mvn run"])',
        \ 'Run maven run', 1)
  call SpaceVim#mapping#space#langSPC('nnoremap', ['l','m', 'p'], 'call call('
        \ . string(function('s:execCMD')) . ', ["mvn package"])',
        \ 'Run maven package', 1)

  " Gradle
  let g:_spacevim_mappings_space.l.a = {'name' : '+Gradle'}
  call SpaceVim#mapping#space#langSPC('nnoremap', ['l','a', 'B'], 'call call('
        \ . string(function('s:execCMD')) . ', ["gradle clean build"])',
        \ 'Run gradle clean build', 1)
  call SpaceVim#mapping#space#langSPC('nnoremap', ['l','a', 'b'], 'call call('
        \ . string(function('s:execCMD')) . ', ["gradle build"])',
        \ 'Run gradle build', 1)
  call SpaceVim#mapping#space#langSPC('nnoremap', ['l','a', 't'], 'call call('
        \ . string(function('s:execCMD')) . ', ["gradle test"])',
        \ 'Run gradle test', 1)
  call SpaceVim#mapping#space#langSPC('nnoremap', ['l','a', 'r'], 'call call('
        \ . string(function('s:execCMD')) . ', ["gradle run"])',
        \ 'Run gradle run', 1)

  " REPL
  let g:_spacevim_mappings_space.l.s = {'name' : '+Send'}
  call SpaceVim#mapping#space#langSPC('nmap', ['l','s', 'i'],
        \ 'call SpaceVim#plugins#repl#start("java")',
        \ 'start REPL process', 1)
  call SpaceVim#mapping#space#langSPC('nmap', ['l','s', 'l'],
        \ 'call SpaceVim#plugins#repl#send("line")',
        \ 'send line and keep code buffer focused', 1)
  call SpaceVim#mapping#space#langSPC('nmap', ['l','s', 'b'],
        \ 'call SpaceVim#plugins#repl#send("buffer")',
        \ 'send buffer and keep code buffer focused', 1)
  call SpaceVim#mapping#space#langSPC('nmap', ['l','s', 's'],
        \ 'call SpaceVim#plugins#repl#send("selection")',
        \ 'send selection and keep code buffer focused', 1)

  if SpaceVim#layers#lsp#check_filetype('java')
        \ || SpaceVim#layers#lsp#check_server('jdtls')
    nnoremap <silent><buffer> K :call SpaceVim#lsp#show_doc()<CR>

    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'd'],
          \ 'call SpaceVim#lsp#show_doc()', 'show_document', 1)
    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'e'],
          \ 'call SpaceVim#lsp#rename()', 'rename symbol', 1)
  endif
endfunction

function! s:java_mappings() abort

endfunction

function! s:go_to_def() abort
  exe 'normal! gd'
endfunction

function! s:execCMD(cmd) abort
  call javaunit#util#ExecCMD(a:cmd)
endfunction

function! SpaceVim#layers#lang#java#set_variable(var) abort
  let s:format_on_save = get(a:var,
        \ 'format_on_save',
        \ s:format_on_save)
  let s:java_file_head = get(a:var,
        \ 'java_file_head',
        \ s:java_file_head)
  let s:java_interpreter = get(a:var,
        \ 'java_interpreter',
        \ s:java_interpreter
        \ )
  let s:java_formatter_jar = get(a:var,
        \ 'java_formatter_jar',
        \ s:java_formatter_jar)
  let s:enabled_linters = get(a:var, 'enabled_linters', s:enabled_linters)
endfunction

" vim:set et sw=2 cc=80:


function! SpaceVim#layers#lang#java#health() abort
  call SpaceVim#layers#lang#java#plugins()
  call SpaceVim#layers#lang#java#config()
  return 1
endfunction

function! SpaceVim#layers#lang#java#loadable() abort

  return 1

endfunction