--
-- ~~~ neovim config
--

-- set up map leader
vim.g.mapleader = "\\"

--
-- ~~~ lazy.nvim

local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"

-- load lazy.nvim
if not (vim.uv or vim.loop).fs_stat(lazypath) then

    -- clone repo
    local lazyrepo = "https://github.com/folke/lazy.nvim.git"
    local out = vim.fn.system({ "git", "clone", "--filter=blob:none", "--branch=stable", lazyrepo, lazypath })

end

-- load lazy.nvim
vim.opt.rtp:prepend(lazypath)

-- setup lazy.nvim
require("lazy").setup({

    -- plugins
    spec = {

        -- tree sitter
        {
            "nvim-treesitter/nvim-treesitter",
            branch = "master",
            lazy = false,
            build = ":TSUpdate"
        },

        -- vimwiki
        {
            "vimwiki/vimwiki",
            init = function()
                vim.g.vimwiki_list = {
                    {
                        path = "~/nexus",
                        syntax = "markdown",
                        ext = ".md"
                    }
                }
            end
        },

        -- lualine
        {
            "nvim-lualine/lualine.nvim",
            dependencies = {
                "nvim-tree/nvim-web-devicons"
            }
        },

        -- indent guides
        {
            "lukas-reineke/indent-blankline.nvim",
            main = "ibl",
        },

        -- fleet theme
        {
            "razcoen/fleet.nvim",
            priority = 1000
        },
    },

    -- installer options
    install = {

        -- set theme
        colorscheme = { "fleet" }
    }
})

--
-- ~~~ language options

-- use 4-spaces as tabs
vim.api.nvim_create_autocmd("FileType", {
    pattern = { "*" },
    callback = function()
        vim.o.shiftwidth = 4
        vim.o.tabstop = 4
        vim.o.softtabstop = 4
        vim.o.expandtab = true
    end
})

-- use system clipboard
vim.opt.clipboard:append("unnamedplus")

-- don't auto-add comments
vim.api.nvim_create_autocmd("FileType", {
    pattern = { "*" },
    callback = function()
        vim.opt.formatoptions = ""
    end
})

-- setup tree sitter
require("nvim-treesitter.configs").setup({

    -- ensure Nu is installed
    ensure_installed = { "nu" },

    -- enable syntax highlighting
    highlight = { enabled = true }
})

-- enable tree sitter for Nu
vim.api.nvim_create_autocmd("FileType", {
    pattern = { "nu" },
    callback = function()
        vim.treesitter.start()
    end
})

--
-- ~~~ keybindings

-- tabs
vim.keymap.set("n", "<Leader>tn", "<cmd>tabnew<cr>")
vim.keymap.set("n", "<Leader>tw", "<cmd>tabclose<cr>")
vim.keymap.set("n", "<Leader>tt", "<cmd>tabnext<cr>")
vim.keymap.set("n", "<Leader>tT", "<cmd>tabprev<cr>")

--
-- ~~~ theming

-- set theme
require("fleet").setup({ transparent_mode = true })
vim.cmd.colorscheme "fleet"

vim.opt.termguicolors = true

-- setup lualine
require("lualine").setup()

-- enable line numbers
vim.opt.number = true
vim.opt.cursorline = true

-- hide current mode
vim.opt.showmode = false

-- conceal information
vim.opt.concealcursor = "n"
vim.opt.conceallevel = 2

-- setup indent guides
require("ibl").setup()