" Load plugins
call plug#begin()

" CodeStats and Airline
Plug 'https://gitlab.com/code-stats/code-stats-vim.git'
Plug 'vim-airline/vim-airline'

" Syntax highlighters
Plug 'tikhomirov/vim-glsl'

" Treesitter things
Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}

" Language server protocol
Plug 'neovim/nvim-lspconfig'

" Autocompletion shenanigans
Plug 'hrsh7th/cmp-nvim-lsp'
Plug 'hrsh7th/cmp-buffer'
Plug 'hrsh7th/cmp-path'
Plug 'hrsh7th/cmp-cmdline'
Plug 'hrsh7th/nvim-cmp'
Plug 'hrsh7th/cmp-vsnip'
Plug 'hrsh7th/vim-vsnip'
Plug 'petertriho/cmp-git'

call plug#end()

" Key remap for resizing split windows
nnoremap <C-H> <C-W><C-H>
nnoremap <C-J> <C-W><C-J>
nnoremap <C-K> <C-W><C-K>
nnoremap <C-L> <C-W><C-L>

" Set custom glsl extensions
autocmd! BufNewFile,BufRead *.effect set ft=glsl

" Python plugins, needed for CodeStats
let g:python3_host_prog = '/usr/bin/python'

" CodeStats
let g:codestats_api_key = $CODESTATS_API_KEY

" Main configuration
set tabstop=2 softtabstop=2 shiftwidth=2 expandtab smarttab autoindent
set mouse=
set laststatus=2
set t_Co=256

lua <<EOF
  require'nvim-treesitter.configs'.setup {
    ensure_installed = {
      "bash", "vim", "regex",
      "cpp", "go", "rust",
      "diff", "make",
      "dockerfile",
      "elixir", "erlang",
      "godot_resource", "gdscript",
      "git_rebase", "gitattributes", "gitcommit", "gitignore",
      "html", "scss",
      "http", "sql",
      "javascript", "jsdoc", "typescript", "vue",
      "json", "json5", "jq",
      "lua", "php", "phpdoc",
      "markdown", "markdown_inline",
      "rst", "yaml"
    },
    highlight = {
      enable = true,
    }
  }

  -- Parser config for dfraw language
  local parser_config = require'nvim-treesitter.parsers'.get_parser_configs()
  parser_config.dfraw = {
    install_info = {
      url = 'https://code.criminallycute.fi/mirrors/tree-sitter-dfraw',
      files = {'src/parser.c'},
      branch = 'main',
    },
    filetype = 'text',
    used_by = {'dfraw'},
  }

  -- Autocompletion shenanigans
  local cmp = require'cmp'

  cmp.setup({
    snippet = {
      expand = function(args)
        vim.fn["vsnip#anonymous"](args.body)
      end,
    },
    window = {
      completion = cmp.config.window.bordered(),
      documentation = cmp.config.window.bordered(),
    },
    mapping = cmp.mapping.preset.insert({
      ['<C-b>'] = cmp.mapping.scroll_docs(-4),
      ['<C-f>'] = cmp.mapping.scroll_docs(4),
      ['<C-Space>'] = cmp.mapping.complete(),
      ['<C-e>'] = cmp.mapping.abort(),
      ['<CR>'] = cmp.mapping.confirm({ select = true }),
    }),
    sources = cmp.config.sources({
      { name = 'nvim_lsp' },
      { name = 'vsnip' },
      { name = 'buffer' },
    })
  })

  -- filetype specific setup
  -- gitconfig
  cmp.setup.filetype('gitcommit', {
    sources = cmp.config.sources({
      { name = 'git' },
      { name = 'buffer' },
    })
  })

  -- / andd ? completion
  cmp.setup.cmdline({'/', '?'}, {
    mapping = cmp.mapping.preset.cmdline(),
    sources = { { name = 'buffer' } },
  })

  -- : completion
  cmp.setup.cmdline(':', {
    mapping = cmp.mapping.preset.cmdline(),
    sources = {
      { name = 'path' },
      { name = 'cmdline' },
    },
    matching = { disallow_symbol_nonprefix_matching = false },
  })

  -- Elixir LSP configuration
  local capabilities = require('cmp_nvim_lsp').default_capabilities()
  require'lspconfig'.elixirls.setup {
    capabilities = capabilities,
    cmd = { '~/.local/share/lsp-servers/elixir-ls/language_server.sh' }
  }
EOF

" disable dfraw for text files
if did_filetype()
  finish
endif
if getline(1) =~# '[a-z_]'
  setfiletype dfraw
endif