-- General =====================================================================
vim.g.mapleader      = ' '                              -- Use `<Space>` as <Leader> key
vim.o.undofile       = true                             -- Enable persistent undo
vim.o.shada          = "'100,<50,s10,:1000,/100,@100,h" -- Limit ShaDa file (for startup)

-- UI ==========================================================================
vim.o.breakindent    = true       -- Indent wrapped lines to match line start
vim.o.breakindentopt = 'list:-1'  -- Add padding for lists (if 'wrap' is set)
vim.o.cursorline     = true       -- Enable current line highlighting
vim.o.linebreak      = true       -- Wrap lines at 'breakat' (if 'wrap' is set)
vim.o.list           = true       -- Show helpful text indicators
vim.o.number         = true       -- Show line numbers
vim.o.pumheight      = 10         -- Make popup menu smaller
vim.o.pummaxwidth    = 100        -- Make popup menu not too wide
vim.o.shortmess      = 'CFOSWaco' -- Disable some built-in completion messages
vim.o.signcolumn     = 'yes'      -- Always show signcolumn (less flicker)
vim.o.splitbelow     = true       -- Horizontal splits will be below
vim.o.splitkeep      = 'screen'   -- Reduce scroll during window split
vim.o.splitright     = true       -- Vertical splits will be to the right
vim.o.wrap           = false      -- Don't visually wrap lines (toggle with \w)
vim.o.winborder      = 'rounded'  -- Use border in floating windows
vim.o.pumborder      = 'rounded'  -- Use border in popup menu
vim.o.cmdheight      = 0          -- Hide the command line when not in use
vim.cmd('syntax off')             -- Disable legacy syntax highlighting
require("vim._core.ui2").enable({ -- Enable new ui (requires nightly)
  msg = { targets = "msg" }
})

-- Editing =====================================================================
vim.o.expandtab       = true     -- Convert tabs to spaces
vim.o.formatoptions   = 'rqnl1j' -- Improve comment editing
vim.o.ignorecase      = true     -- Ignore case during search
vim.o.infercase       = true     -- Infer case in built-in completion
vim.o.shiftwidth      = 2        -- Use this number of spaces for indentation
vim.o.smartcase       = true     -- Respect case if search pattern has upper case
vim.o.spelloptions    = 'camel'  -- Treat camelCase word parts as separate words
vim.o.tabstop         = 2        -- Show tab as this number of spaces
vim.o.virtualedit     = 'block'  -- Allow going past end of line in blockwise mode
vim.opt.autoread      = true     -- Do not prompt to reread files on update

-- Pattern for a start of numbered list (used in `gw`).
vim.o.formatlistpat   = [[^\s*[0-9\-\+\*]\+[\.\)]*\s\+]]

-- Built-in completion
vim.o.complete        = '.,w,b,kspell'                  -- Use less sources
vim.o.completeopt     = 'menuone,noselect,fuzzy,nosort' -- Use custom behavior
vim.o.completetimeout = 100                             -- Limit sources delay

-- Autocommands ================================================================
Config.autocmd('TextYankPost', '*', function() vim.hl.hl_op() end, 'Highlight yanked text')
Config.autocmd('TermOpen', '*', function() vim.cmd('startinsert') end, 'Start insert mode when terminal opens')

-- Diagnostics =================================================================
Config.later(function()
  vim.diagnostic.config({
    signs = {
      priority = 9999,
      severity = { min = 'WARN', max = 'ERROR' },
      text = {
        [vim.diagnostic.severity.ERROR] = '',
        [vim.diagnostic.severity.WARN]  = '',
        [vim.diagnostic.severity.INFO]  = '',
        [vim.diagnostic.severity.HINT]  = '',
      },
    },
    underline = { severity = { min = 'HINT', max = 'ERROR' } },
    virtual_lines = false,
    virtual_text = {
      current_line = true,
      severity = { min = 'ERROR', max = 'ERROR' },
    },
    update_in_insert = false,
  })

  local dap_signs = {
    DapBreakpoint          = { text = '', texthl = 'DapBreakpoint', linehl = '', numhl = '' },
    DapBreakpointCondition = { text = '', texthl = 'DapBreakpointCondition', linehl = '', numhl = '' },
    DapLogPoint            = { text = '', texthl = 'DapLogPoint', linehl = '', numhl = '' },
    DapStopped             = { text = '', texthl = 'DapStopped', linehl = 'DapStoppedLine', numhl = '' },
    DapBreakpointRejected  = { text = '', texthl = 'DapBreakpointRejected', linehl = '', numhl = '' },
  }

  for name, sign in pairs(dap_signs) do
    vim.fn.sign_define(name, sign)
  end
end)