vim.g.mapleader = ','
vim.g.maplocalleader = '\\'

local Plug = vim.fn['plug#']
vim.call('plug#begin')

Plug 'junegunn/vim-plug'

-- Language Server protocol config
Plug 'neovim/nvim-lspconfig'

-- Colorschemes
Plug 'shaunsingh/solarized.nvim'

-- Syntax Highlighting and folding
Plug('nvim-treesitter/nvim-treesitter', {['do'] = ':TSUpdate'})

Plug 'nvim-lualine/lualine.nvim'

-- Tags
Plug 'liuchengxu/vista.vim'

-- Navigation
Plug 'preservim/nerdtree'

-- Telescope finding shit
Plug 'nvim-lua/plenary.nvim'
Plug('nvim-telescope/telescope.nvim', {['branch'] = '0.1.x'})
Plug('nvim-telescope/telescope-fzf-native.nvim', {['do'] = 'make' })
Plug 'doctorfree/cheatsheet.nvim'

-- Omnisharp
Plug 'Hoffs/omnisharp-extended-lsp.nvim'

-- Git
Plug 'tpope/vim-fugitive'
Plug 'tommcdo/vim-fubitive'

-- Misc
Plug 'lukas-reineke/indent-blankline.nvim'

vim.call('plug#end')

require'lspconfig'.pylsp.setup{
	settings = { pylsp = {
		plugins = {
			flake8 = {
				enabled = true,
				maxLineLength = 100,
			},
			pycodestyle = { enabled = false, },
			pyflakes = { enabled = false, },
			rope_autoimport = { enabled = true, },
		},
		configurationSources = 'flake8'
	}}
}
require'lspconfig'.omnisharp.setup{
	cmd = { "dotnet", "/usr/lib/omnisharp-roslyn/OmniSharp.dll" },
	enable_roslyn_analyzers = false,
	handlers = {
		["textDocument/definition"] = require('omnisharp_extended').handler,
	},
}

vim.diagnostic.config{
	float = {
		source = 'always',
	}
}

-- Global mappings.
-- See `:help vim.diagnostic.*` for documentation on any of the below functions
vim.keymap.set('n', '<space>e', vim.diagnostic.open_float)
vim.keymap.set('n', '[d', vim.diagnostic.goto_prev)
vim.keymap.set('n', ']d', vim.diagnostic.goto_next)
vim.keymap.set('n', '<space>q', vim.diagnostic.setloclist)

-- Use LspAttach autocommand to only map the following keys
-- after the language server attaches to the current buffer
vim.api.nvim_create_autocmd('LspAttach', {
	group = vim.api.nvim_create_augroup('UserLspConfig', {}),
	callback = function(ev)
		-- Enable completion triggered by <c-x><c-o>
		vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'

		-- Buffer local mappings.
		-- See `:help vim.lsp.*` for documentation on any of the below functions
		local opts = { buffer = ev.buf }
		vim.keymap.set('n', '<leader>gd', vim.lsp.buf.definition, opts)
		vim.keymap.set('n', '<leader>K', vim.lsp.buf.hover, opts)
		vim.keymap.set('n', '<leader>k', vim.lsp.buf.signature_help, opts)
		vim.keymap.set('n', '<leader>D', vim.lsp.buf.type_definition, opts)
		vim.keymap.set('n', '<leader>rn', vim.lsp.buf.rename, opts)
		vim.keymap.set({ 'n', 'v' }, '<leader>ca', vim.lsp.buf.code_action, opts)
		vim.keymap.set('n', '<space>f', function()
			vim.lsp.buf.format { async = true }
		end, opts)
	end,
})


-- Tressiter for syntax highlighting and folding
require'nvim-treesitter.configs'.setup {
	ensure_installed = { "c", "lua", "vim", "vimdoc", "python", "html" },
	auto_install = true,

	highlight = { enable = true, },
	indent = { enable = true, },
}

vim.opt.foldmethod = "expr"
vim.opt.foldexpr = "nvim_treesitter#foldexpr()"


-- Tag bar
vim.g.vista_default_executive = 'nvim_lsp'
vim.keymap.set('n', '<F8>', ':Vista!!<CR>')


-- Colourscheme
vim.opt.background = 'light'

vim.g.solarized_borders = true


-- This setting needs to be set before solarized is loaded
-- so it can't go into ginit.vim, since that is loaded after
-- this file
if vim.fn.has('gui_running') == 0 then
	vim.g.solarized_disable_background = true
else
	vim.g.solarized_disable_background = false
end
require('solarized').set()


-- Lualine (powerline like thing) setup
require('lualine').setup {
	options = {
		theme = 'solarized'
	}
}


-- Nerdree mappings
vim.keymap.set('n', '<C-n>', ':NERDTreeToggle<CR>')
vim.keymap.set('n', '<C-f>', ':NERDTreeFind<CR>')


-- Telescope
require('telescope').setup{
	extensions = {
		fzf = {
			fuzzy = true,                    -- false will only do exact matching
			override_generic_sorter = true,  -- override the generic sorter
			override_file_sorter = true,     -- override the file sorter
			case_mode = "smart_case",
		}
	},
	pickers = {
		find_files = {
			theme = "dropdown",
		},
		live_grep = {
			theme = "dropdown",
		},
		lsp_references = {
			theme = "dropdown",
		},
	}
}
local tele_builtin = require('telescope.builtin')
vim.keymap.set('n', '<leader>ff', tele_builtin.find_files, {})
vim.keymap.set('n', '<leader>fg', tele_builtin.live_grep, {})
vim.keymap.set('n', '<leader>gr', tele_builtin.lsp_references, {})
require('telescope').load_extension('fzf')


-- General Setup
-- Relative line numbering
vim.opt.relativenumber = true
vim.opt.number = true
-- Ruler at 80 and 100 cols
vim.o.colorcolumn = "80,100"

-- Show Spaces, newlines tabs etc
vim.opt.listchars = {
	trail = '•',
	extends = '>',
	precedes = '<',
	nbsp = '␣',
	eol = '↲',
	tab = '→,',
}
vim.opt.list = true

-- Clear highlights from search with Ctrl-l
vim.keymap.set('n', '<C-l>', ':noh<CR>')


-- Indentline
require("ibl").setup()