-- General
vim.g.mapleader = ' '                          -- Use `<Space>` as <Leader> key
vim.o.undofile  = true                         -- Enable persistent undo
vim.o.shada     = "'50,<20,s10,:100,/50,@50,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.listchars      = 'tab:→ ,trail:·,nbsp:␣' -- Characters for list mode
vim.o.number         = true                    -- Show line numbers
vim.o.pumheight      = 10                      -- Make popup menu smaller
vim.o.pummaxwidth    = 80                      -- Make popup menu not too wide
vim.o.shortmess      = 'CFOSWacou'             -- 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
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.o.complete        = '.,w,b,kspell'           -- Use less sources
vim.o.completeopt     = 'menuone,noselect,fuzzy' -- Use custom behavior

-- 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')
Config.autocmd('LspAttach', '*', function(ev) vim.bo[ev.buf].complete = 'o' end, 'Use lsp completions')

-- Diagnostics
Config.later(function()
  vim.diagnostic.config({
    jump = { on_jump = vim.diagnostic.open_float },
    signs = {
      priority = 9999,
      severity = { min = vim.diagnostic.severity.INFO },
      text = {
        [vim.diagnostic.severity.ERROR] = '',
        [vim.diagnostic.severity.WARN]  = '',
        [vim.diagnostic.severity.INFO]  = '',
      },
    },
    virtual_text = false,
  })
end)