-- some basic options
local vim = vim
vim.opt.tabstop = 2
vim.opt.shiftwidth = 2
vim.opt.softtabstop = 2
vim.opt.expandtab = true
vim.opt.termguicolors = true
vim.opt.smartindent = true
vim.opt.number = true
vim.opt.autochdir = true
vim.opt.hidden = true
vim.o.hidden = true
vim.o.signcolumn = 'auto'
vim.o.smarttab = true
vim.o.clipboard = "unnamedplus"
vim.g.noswapfile = true
vim.cmd [[set mouse=a]] -- enable mouse
vim.wo.cursorline = true

vim.opt.guifont = "Iosevka Nerd Font:h12"

vim.g.neovide_refresh_rate = 140
--vim.g.coq_settings = { 'auto_start': 'shut-up' }

function map(mode, shortcut, command)
  vim.api.nvim_set_keymap(mode, shortcut, command, { noremap = true, silent = true })
end

-- normal mode map
function nmap(shortcut, command)
  map('n', shortcut, command)
end

-- insert mode map
function imap(shortcut, command)
  map('i', shortcut, command)
end

-- <leader> is leader key; default is \
nmap("<leader>v", "<cmd>CHADopen<cr>")
nmap("<leader>ec", "<cmd>e ~/.config/nvim/init.lua<cr>")
nmap("<leader>sc", "<cmd>source ~/.config/nvim/init.lua<cr>")

-- buffer commands
nmap("<leader>b", "<cmd>BufferLineCyclePrev<cr>")
nmap("<leader>n", "<cmd>BufferLineCycleNext<cr>")
nmap("<leader>gb", "<cmd>BufferLinePick<cr>")
nmap("<leader>w", "<cmd>bdelete!<cr>")

-- lsp on_attach mappings
local on_attach = function(client, bufnr)
  -- Enable completion triggered by <c-x><c-o>
  vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')

  -- Mappings.
  -- See `:help vim.lsp.*` for documentation on any of the below functions
  local bufopts = { noremap = true, silent = true, buffer = bufnr }
  vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, bufopts)
  vim.keymap.set('n', 'gd', vim.lsp.buf.definition, bufopts)
  vim.keymap.set('n', 'K', vim.lsp.buf.hover, bufopts)
  vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, bufopts)
  vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, bufopts)
  vim.keymap.set('n', '<space>wa', vim.lsp.buf.add_workspace_folder, bufopts)
  vim.keymap.set('n', '<space>wr', vim.lsp.buf.remove_workspace_folder, bufopts)
  vim.keymap.set('n', '<space>wl', function()
    print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
  end, bufopts)
  vim.keymap.set('n', '<space>D', vim.lsp.buf.type_definition, bufopts)
  vim.keymap.set('n', '<space>rn', vim.lsp.buf.rename, bufopts)
  vim.keymap.set('n', '<space>ca', vim.lsp.buf.code_action, bufopts)
  vim.keymap.set('n', 'gr', vim.lsp.buf.references, bufopts)
  vim.keymap.set('n', '<space>f', vim.lsp.buf.formatting, bufopts)
  require 'illuminate'.on_attach(client)
end

-- lsp config setup
require 'lspconfig'.hls.setup { on_attach = on_attach } -- haskell language server
require 'lspconfig'.pyright.setup {}
require 'lspconfig'.tsserver.setup { on_attach = on_attach }
require 'lspconfig'.sumneko_lua.setup { on_attach = on_attach,
  settings = {
    Lua = {
      diagnostics = {
        globals = { 'vim' }
      }
    }
  }
}

-- lsp diagnostic mapping
local opts = { noremap = true, silent = true }
vim.keymap.set('n', '<space>e', vim.diagnostic.open_float, opts)
vim.keymap.set('n', '[d', vim.diagnostic.goto_prev, opts)
vim.keymap.set('n', ']d', vim.diagnostic.goto_next, opts)
vim.keymap.set('n', '<space>q', vim.diagnostic.setloclist, opts)

vim.cmd("colorscheme nightfox")

-- packer boilerplate
local fn = vim.fn
local install_path = fn.stdpath('data') .. '/site/pack/packer/start/packer.nvim'
if fn.empty(fn.glob(install_path)) > 0 then
  packer_bootstrap = fn.system({ 'git', 'clone', '--depth', '1', 'https://github.com/wbthomason/packer.nvim',
    install_path })
end

return require('packer').startup(function(use)
  use 'wbthomason/packer.nvim'
  use 'neovim/nvim-lspconfig'
  use {
    'ms-jpq/coq_nvim',
    branch = 'coq',
    event = "VimEnter",
    config = 'vim.cmd[[COQnow]]'
  }
  use { 'ms-jpq/coq.artifacts', branch = 'artifacts' }
  use {
    'nvim-treesitter/nvim-treesitter',
    run = ':TSUpdate',
    config = function() require('nvim-treesitter.configs').setup {
        highlight = {
          enable = true,
          additional_vim_regex_highlighting = { 'org' }
        },
        indent = {
          enable = true
        },
        ensure_installed = { 'org' }
      }
    end
  }
  use { 'ms-jpq/chadtree',
    branch = 'chad',
    run = ':CHADdeps',
  }
  use { 'ahmedkhalf/project.nvim', config = function() require("project_nvim").setup {
      manual_mode = true
    }
  end
  }
  use {
    'akinsho/bufferline.nvim',
    tag = "v2.*",
    requires = 'kyazdani42/nvim-web-devicons',
    config = function() require("bufferline").setup {
        options = {
          seperator_style = { "slant", "slant" },
          diagnostics = false
        }
      }
    end
  }
  use { 'windwp/nvim-autopairs' } -- auto close brackets, etc.
  use { "EdenEast/nightfox.nvim",
    config = function() require("nightfox").setup{}
    end
  }
  use {
    "nvim-lualine/lualine.nvim",
    event = "VimEnter",
    config = function()
      require("lualine").setup {
        options = { theme = 'auto', globalstatus = true },
        sections = { lualine_x = { 'filetype' } }
      }
    end,
    requires = { 'kyazdani42/nvim-web-devicons', opt = true }
  }
  use {
    "startup-nvim/startup.nvim",
    requires = {"nvim-telescope/telescope.nvim", "nvim-lua/plenary.nvim"},
    config = function()
      require"startup".setup()
    end
  }
  use 'RRethy/vim-illuminate'
  use { 'TimUntersberger/neogit',
    requires = 'nvim-lua/plenary.nvim',
    config = function() require("neogit").setup()
    end
  }
  use {
    'nvim-telescope/telescope.nvim',
    requires = { { 'nvim-lua/plenary.nvim' } },
    config = function()
      require("telescope").setup {}
      require("telescope").load_extension('projects')
    end
  }
  use {
    'nvim-orgmode/orgmode',
    config = function()
      require('orgmode').setup_ts_grammar()
      require('orgmode').setup {
        org_agenda_files = {
          "~/Documents/org-mode/school.org",
          "~/Documents/org-mode/personal.org",
          "~/Documents/org-mode/tweaking.org",
          "~/Documents/org-mode/projects.org"
        },
        win_split_mode = 'tabnew',
        org_log_done = false,
        -- notifications are supported?! emacs just got smoked fr
        notifications = {
          enabled = true,
          cron_enabled = false, -- can set this up to send notifications even when vim is closed
          deadline_reminder = true,
          scheduled_reminder = true,
          reminder_time = { 5, 10, 15 }
        }
      }
    end
  }
  if packer_bootstrap then
    require('packer').sync()
  end
end)