local indent = require 'config.keymaps.indent'
local map    = require 'config.helpers.keymap'
local n      = map 'n'
local i      = map 'i'
local v      = map 'v'
local t      = map 't'
local nv     = map { 'n', 'v' }



n 'j'           'gj'                            'Move: down by line'
n 'k'           'gk'                            'Move: up by line'

n '<Tab>'       ':bn<CR>'                       'Buffer: next'
n '<S-Tab>'     ':bp<CR>'                       'Buffer: previous'
n '<Leader>bd'  ':bd<CR>'                       'Buffer: delete'

t '<Esc><Esc>'  [[<C-\><C-n>]]                  'Exit from terminal mode'

n '<C-h>'       '<C-w>h'                        'Window: move left'
n '<C-j>'       '<C-w>j'                        'Window: move down'
n '<C-k>'       '<C-w>k'                        'Window: move up'
n '<C-l>'       '<C-w>l'                        'Window: move right'

-- Indentation
i '<Tab>'       (indent.smarttab)             { 'Indent', expr = true }
v '>'           '>gv'                           'Indent right'
v '<'           '<gv'                           'Indent left'
v '|'           (indent.normalize)              'Indent normalize'

-- Diagnostics
n '<leader>e'   (vim.diagnostic.open_float)     'Open error diagnostics'
n '[d'          (vim.diagnostic.goto_prev)      'Previous diagnostic message'
n ']d'          (vim.diagnostic.goto_next)      'Next diagnostic message'
n '<leader>dl'  (vim.diagnostic.setloclist)     'Diagnostic: list messages'

-- X
local function insert_date()
	local row, col = unpack(vim.api.nvim_win_get_cursor(0))
	local text = os.date '!%Y-%m-%dT%H:%M:%SZ' ---@cast text string
	col = math.min(#vim.api.nvim_get_current_line(), col + 1)
	vim.api.nvim_buf_set_text(0, row - 1, col, row - 1, col, { text })
end

n '<Leader>xd' (insert_date)                    'Execute: full date'
v '<Leader>xs' [[:sort<CR>]]                    'Sort: by first word'


-- Meta
local function open_config()
	vim.fn.chdir '~/.config/nvim'
	vim.cmd 'Explore'
end

n '<leader>mn' (open_config) 'Meta: neovim config'
n '<leader>ml' ':Lazy<CR>'   'Meta: lazy'


-- LSP
do
	local group = vim.api.nvim_create_augroup('UserLspConfig', {})

	local function setup_lsp_keymaps(ev)
		-- Enable completion triggered by <c-x><c-o>
		vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'

		local function format()
			vim.lsp.buf.format({ async = true })
		end

		local function format_selection()
			vim.lsp.buf.format({
				async = true,
				range = {
					["start"] = vim.api.nvim_buf_get_mark(0, "<"),
					["end"]   = vim.api.nvim_buf_get_mark(0, ">"),
				}
			})
		end

		local function workspaces_list()
			print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
		end

		local function toggle_inlay_hints()
			vim.lsp.inlay_hint.enable(not vim.lsp.inlay_hint.is_enabled({}))
		end

		local buffer = ev.buf
		n  ','          (toggle_inlay_hints)                    {'LSP: show inlay hints', buffer}
		n  'K'          (vim.lsp.buf.hover)                     {'LSP: show hover help', buffer}
		n  '<C-k>'      (vim.lsp.buf.signature_help)            {'LSP: signature help', buffer}
		n  '<Leader>ld' (vim.lsp.buf.definition)                {'LSP: definition', buffer}
		n  '<Leader>lD' (vim.lsp.buf.declaration)               {'LSP: declaration', buffer}
		n  '<Leader>li' (vim.lsp.buf.implementation)            {'LSP: implementation', buffer}
		n  '<Leader>lR' (vim.lsp.buf.references)                {'LSP: references', buffer}
		n  '<Leader>lt' (vim.lsp.buf.type_definition)           {'LSP: type definition', buffer}
		n  '<leader>lr' (vim.lsp.buf.rename)                    {'LSP: rename identifier', buffer}
		nv '<leader>la' (vim.lsp.buf.code_action)               {'LSP: code actions', buffer}
		n  '<leader>lf' (format)                                {'LSP: format file', buffer}
		v  '<leader>lf' (format_selection)                      {'LSP: format file', buffer}
		n  '<leader>wa' (vim.lsp.buf.add_workspace_folder)      {'LSP: add workspace folder', buffer}
		n  '<leader>wr' (vim.lsp.buf.remove_workspace_folder)   {'LSP: remove workspace folder', buffer}
		n  '<leader>wl' (workspaces_list)                       {'LSP: list workspace folders', buffer}
	end

	vim.api.nvim_create_autocmd('LspAttach', {
		group    = group,
		callback = setup_lsp_keymaps
	})
end