-- Plugins
local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
  vim.fn.system({
    "git", "clone", "--filter=blob:none",
    "https://github.com/folke/lazy.nvim.git",
    "--branch=stable", lazypath,
  })
end
vim.opt.rtp:prepend(lazypath)

require("lazy").setup({
  {
    'nvim-telescope/telescope.nvim',
    dependencies = {
      'nvim-lua/plenary.nvim',
      { 'nvim-telescope/telescope-fzf-native.nvim',  build = 'make' },
      { 'nvim-telescope/telescope-file-browser.nvim' },
    },
    keys = {
      { '<leader>ff', '<cmd>Telescope find_files<cr>' },
      { '<leader>fg', '<cmd>Telescope live_grep<cr>' },
      { '<leader>fb', '<cmd>Telescope buffers<cr>' },
      { '<leader>e',  '<cmd>Telescope file_browser<cr>' },
    },
  },
  {
    "rcarriga/nvim-dap-ui",
    dependencies = { "mfussenegger/nvim-dap", "nvim-neotest/nvim-nio" },
  },
  {
    'lewis6991/gitsigns.nvim',
    event = { 'BufReadPre', 'BufNewFile' },
    opts = {
      signs = {
        add          = { text = '+' },
        change       = { text = '~' },
        delete       = { text = '_' },
        topdelete    = { text = '-' },
        changedelete = { text = '~' },
      },
    },
  },
  {
    "iamcco/markdown-preview.nvim",
    cmd = { "MarkdownPreviewToggle", "MarkdownPreview", "MarkdownPreviewStop" },
    build = "cd app && npm install",
    init = function()
      vim.g.mkdp_filetypes = { "markdown" }
    end,
    ft = { "markdown" },
  },
})

-- theme
vim.cmd.colorscheme("unokai")
vim.api.nvim_set_hl(0, "Normal", { bg = "none" })
vim.api.nvim_set_hl(0, "NormalNC", { bg = "none" })
vim.api.nvim_set_hl(0, "EndOfBuffer", { bg = "none" })

-- basic settings
vim.opt.number = true
vim.opt.relativenumber = true
vim.opt.cursorline = true
vim.opt.wrap = false
vim.opt.scrolloff = 10
vim.opt.list = true
vim.opt.listchars = { extends = '…', precedes = '…', tab = '  ' }
vim.opt.sidescrolloff = 1

vim.opt.tabstop = 2
vim.opt.shiftwidth = 2
vim.opt.softtabstop = 2
vim.opt.expandtab = true
vim.opt.smartindent = true

-- search
vim.opt.ignorecase = true
vim.opt.smartcase = true
vim.opt.hlsearch = true
vim.opt.incsearch = true

-- visuals
vim.opt.termguicolors = true
vim.opt.signcolumn = "yes"
vim.opt.colorcolumn = "100"
vim.opt.showmatch = true
vim.opt.matchtime = 2
vim.opt.cmdheight = 1
vim.opt.completeopt = "menuone,noinsert,noselect"
vim.opt.showmode = false
vim.opt.pumheight = 10
vim.opt.pumblend = 10
vim.opt.winblend = 0
vim.opt.conceallevel = 0
vim.opt.lazyredraw = true

-- files
vim.opt.swapfile = false
vim.opt.undofile = true
vim.opt.undodir = vim.fn.expand("~/.vim/undodir")
vim.opt.updatetime = 300
vim.opt.timeoutlen = 500
vim.opt.autoread = true

-- behavior
vim.opt.hidden = true
vim.opt.backspace = "indent,eol,start"
vim.opt.iskeyword:append("-")
vim.opt.path:append("**")
vim.opt.clipboard:append("unnamedplus")
vim.opt.encoding = "UTF-8"

-- keymaps
vim.keymap.set({ "n", "v" }, "<leader>d", '"_d', { desc = "Delete without yanking" })
vim.keymap.set("n", "<leader>w", ":w<CR>", { desc = "Save file" })
vim.keymap.set("n", "<leader>h", ":nohlsearch<CR>", { desc = "Clear search highlight" })

vim.keymap.set("n", "J", "mzJ`z")

-- move lines (visual only)
vim.keymap.set("v", "J", ":m '>+1<CR>gv=gv")
vim.keymap.set("v", "K", ":m '<-2<CR>gv=gv")

-- indent keep selection
vim.keymap.set("v", "<", "<gv")
vim.keymap.set("v", ">", ">gv")

-- copy full path
vim.keymap.set("n", "<leader>pp", function()
  local path = vim.fn.expand("%:p")
  vim.fn.setreg("+", path)
  print("file:", path)
end)

-- autocommands
local augroup = vim.api.nvim_create_augroup("UserConfig", {})

vim.api.nvim_create_autocmd("TextYankPost", {
  group = augroup,
  callback = function()
    vim.highlight.on_yank()
  end,
})

-- LSP
vim.api.nvim_create_autocmd('LspAttach', {
  callback = function(event)
    local opts = { buffer = event.buf }

    -- navigation (fixed)
    vim.keymap.set('n', 'gd', vim.lsp.buf.definition, opts)
    vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, opts)
    vim.keymap.set('n', 'gr', vim.lsp.buf.references, opts)
    vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, opts)

    -- info
    vim.keymap.set('n', 'K', vim.lsp.buf.hover, opts)
    vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, opts)

    -- actions
    vim.keymap.set('n', '<leader>ca', vim.lsp.buf.code_action, opts)
    vim.keymap.set('n', '<leader>rn', vim.lsp.buf.rename, opts)

    -- diagnostics
    vim.keymap.set('n', '<leader>nd', vim.diagnostic.goto_next, opts)
    vim.keymap.set('n', '<leader>pd', vim.diagnostic.goto_prev, opts)
    vim.keymap.set('n', '<leader>q', vim.diagnostic.setloclist, opts)
  end,
})

vim.diagnostic.config({
  virtual_text = { prefix = '●' },
  signs = true,
  underline = true,
})