-- Abbreviations
local opt = vim.opt
local map = vim.keymap.set
local cmd = vim.cmd

-- [[ OPTIONS ]] --

-- Line numbers
opt.number = true
opt.relativenumber = true

-- Status line
opt.statusline = "[%n] %<%f %h%w%m%r%=%-14.(%l,%c%V%) %P"

-- Block cursor
opt.guicursor = ""

-- Highlight cursor line
opt.cursorline = true

-- Set termguicolors
opt.termguicolors = true

-- File options
opt.undofile = true
opt.undodir = os.getenv("HOME") .. "/.vim/nvim_undodir"
opt.swapfile = false
opt.backup = false
opt.fixendofline = false

-- Tabs
opt.tabstop = 4
opt.softtabstop = 4
opt.shiftwidth = 4
opt.expandtab = true
opt.breakindent = true

-- Search
opt.ignorecase = true
opt.smartcase = true
opt.incsearch = true
map("n", "<ESC>", "<cmd>nohlsearch<CR>")

-- Columns
opt.signcolumn = "yes"
-- opt.textwidth = 78 -- RFC 5322
opt.colorcolumn = "79"

-- Auto complete
opt.completeopt = { "menuone", "popup" --[[, "noselect" ]] }

-- Window border
opt.winborder = "rounded"

-- [[ KEYMAPS ]] --

-- Leader key
vim.g.mapleader = " "
vim.g.maplocalleader = " "

-- Clipboard
map({ "n", "v" }, "<leader>y", "\"+y")

-- Deletions
map({ "n", "v" }, "<leader>d", "\"_d")
map("n", "<leader>md", ":delmarks!<CR>")

-- Commands
map("n", "<leader>x", ":!chmod +x %<CR>")
map("n", "<leader>cd", ":cd %:h | pwd<CR>")

-- Tabs
map("n", "<leader>tt", ":tabnew<CR>")
map("n", "<leader>tw", ":tabclose<CR>")
map("n", "<leader>tn", ":tabnext<CR>")
map("n", "<leader>tp", ":tabprevious<CR>")
map("n", "<leader>tf", ":tabfirst<CR>")
map("n", "<leader>tl", ":tablast<CR>")

-- Buffers
map("n", "<leader>n", ":enew<CR>")
map("n", "<leader>db", ":bdelete<CR>")
map("n", "<TAB>", ":bnext<CR>")
map("n", "<S-TAB>", ":bprevious<CR>")
map("n", "<leader>\\", ":buffer term<CR>")
map("t", "<ESC>", "<C-\\><C-n>")

-- Indentation in visual mode
map("v", "<", "<gv")
map("v", ">", ">gv")

-- Move text in visual mode
map("v", "J", ":move '>+1<CR>gv=gv")
map("v", "K", ":move '<-2<CR>gv=gv")

-- Run last command in terminal
map("n", "<leader>r", ":buffer term<CR>i<Up><CR><C-\\><C-n>")

-- Window movement
map("n", "<M-h>", "<C-w>h")
map("n", "<M-j>", "<C-w>j")
map("n", "<M-k>", "<C-w>k")
map("n", "<M-l>", "<C-w>l")
map("t", "<M-h>", "<cmd>wincmd h<CR>")
map("t", "<M-j>", "<cmd>wincmd j<CR>")
map("t", "<M-k>", "<cmd>wincmd k<CR>")
map("t", "<M-l>", "<cmd>wincmd l<CR>")

-- Window resizing
map("n", "<M-Up>", "<cmd>resize -2<CR>")
map("n", "<M-Down>", "<cmd>resize +2<CR>")
map("n", "<M-Left>", "<cmd>vertical resize -2<CR>")
map("n", "<M-Right>", "<cmd>vertical resize +2<CR>")

-- Listchars
opt.listchars = {
    -- eol = "$",
    tab = "» ",
    space = "·",
    trail = "-"
}

-- Toggle listchars
map("n", "<leader>lc", function()
    vim.wo.list = not vim.wo.list
end)

-- [[ AUTOCMDS ]] --

-- Highlight copied text
vim.api.nvim_create_autocmd("TextYankPost", {
    callback = function() vim.highlight.on_yank() end
})

-- Disable LSP syntax highlight
vim.api.nvim_create_autocmd('LspAttach', {
    group = vim.api.nvim_create_augroup('my.lsp', {}),
    callback = function(ev)
        local client = assert(vim.lsp.get_client_by_id(ev.data.client_id))
        client.server_capabilities.semanticTokensProvider = nil
    end
})

-- [[ PLUGINS ]] --

-- Install plugins
vim.pack.add({
    -- Colorscheme
    "https://github.com/habamax/vim-gruvbit",

    -- Background trasparency
    "https://github.com/xiyaowong/transparent.nvim",

    -- Fuzzy finder
    "https://github.com/echasnovski/mini.pick",

    -- Git integration
    "https://github.com/tpope/vim-fugitive",
    "https://github.com/lewis6991/gitsigns.nvim",

    -- Text aligning
    { src = "https://github.com/Vonr/align.nvim", version = "v2" },

    -- Multi cursor
    "https://github.com/brenton-leighton/multiple-cursors.nvim",

   -- Trailing whitespace
   "https://github.com/kaplanz/retrail.nvim",

   -- Indent blankline
   "https://github.com/lukas-reineke/indent-blankline.nvim",

   -- File tree
   { src = "https://github.com/nvim-neo-tree/neo-tree.nvim", version = vim.version.range("3") },
   "https://github.com/nvim-lua/plenary.nvim",
   "https://github.com/MunifTanjim/nui.nvim",
   "https://github.com/nvim-tree/nvim-web-devicons",

   -- LSP
   "https://github.com/neovim/nvim-lspconfig",
   "https://github.com/mason-org/mason.nvim",
   "https://github.com/mason-org/mason-lspconfig.nvim",

   -- Autocompletion
   { src = "https://github.com/saghen/blink.cmp", version = "v1" }
})
vim.cmd.packadd("nvim.undotree")
vim.cmd.packadd("nvim.difftool")

-- [[ PLUGINS CONFIGURATIONS ]] --

cmd.colorscheme("gruvbit")

require("mini.pick").setup()

require("multiple-cursors").setup()

require("retrail").setup({
    hlgroup = "Error",
    trim = {
        auto = false, -- Auto trim on BufWritePre
    }
})

require("ibl").setup()

require("neo-tree").setup({
    window = {
        width = 32
    }
})

require("mason").setup()
require("mason-lspconfig").setup()
vim.lsp.config("lua_ls", {
    settings = {
        Lua = {
            runtime = {
                version = "LuaJIT",
            },
            diagnostics = {
                globals = {
                    "vim",
                    "require"
                },
            },
            workspace = {
                library = vim.api.nvim_get_runtime_file("", true),
            },
            telemetry = {
                enable = false,
            }
        }
    }
})

require("blink.cmp").setup({
    fuzzy = { implementation = "lua" }
})

-- [[ PLUGIN KEYMAPS ]] --
map("n", "<leader>f", ":Pick files<CR>")
map("n", "<leader>b", ":Pick buffers<CR>")

map("n", "<leader>u", ":Undotree<CR>")
map("n", "<leader>gs", ":Git<CR>")

map("n", "<leader>gt", ":Gitsigns toggle_signs<CR>")
map("n", "<leader>gp", ":Gitsigns preview_hunk<CR>")
map("n", "<leader>gb", ":Gitsigns toggle_current_line_blame<CR>")

map("x", "<leader>al", function()
    require("align").align_to_string({ preview = true, regex = true })
end)

map({ "n", "x" }, "<C-j>", "<cmd>MultipleCursorsAddDown<CR>")
map({ "n", "x" }, "<C-k>", "<cmd>MultipleCursorsAddUp<CR>")
map({ "n", "i", "x" }, "<C-Up>", "<cmd>MultipleCursorsAddUp<CR>")
map({ "n", "i", "x" }, "<C-Down>", "<cmd>MultipleCursorsAddDown<CR>")
map({ "n", "i" }, "<C-LeftMouse>", "<cmd>MultipleCursorsMouseAddDelete<CR>")
map({ "n", "v", "x" }, "<C-l>", "<cmd>MultipleCursorsAddJumpNextMatch<CR>")
map({ "n", "x" }, "<leader>D", "<cmd>MultipleCursorsJumpNextMatch<CR>")
map("n", "<leader>|", function()
    require("multiple-cursors").align()
end)

map("n", "<leader>p", "<cmd>Neotree toggle<CR>")

map("n", "grd", vim.diagnostic.open_float)