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path: root/lua/config/autocmds.lua
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local function augroup(name)
	return vim.api.nvim_create_augroup(name, { clear = true })
end

-- Highlight on yank
vim.api.nvim_create_autocmd("TextYankPost", {
	group = augroup("highlight_yank"),
	callback = function()
		vim.highlight.on_yank()
	end,
})

-- close some filetypes with <q>
	vim.api.nvim_create_autocmd("FileType", {
	group = augroup("close_with_q"),
	pattern = {
		"diff",
		"git",
		"fugitive",
		"PlenaryTestPopup",
		"help",
		"lspinfo",
		"man",
		"notify",
		"qf",
		"query",
		"spectre_panel",
		"startuptime",
		"tsplayground",
		"neotest-output",
		"checkhealth",
		"neotest-summary",
		"neotest-output-panel",
	},
	callback = function(event)
		vim.bo[event.buf].buflisted = false
		vim.keymap.set("n", "q", "<cmd>close<cr>", { buffer = event.buf, silent = true })
	end,
})

-- go to last loc when opening a buffer
vim.api.nvim_create_autocmd("BufReadPost", {
	group = augroup("last_loc"),
	callback = function(event)
		local exclude = { "gitcommit" }
		local buf = event.buf
		if vim.tbl_contains(exclude, vim.bo[buf].filetype) or vim.b[buf].lazyvim_last_loc then
			return
		end
		vim.b[buf].lazyvim_last_loc = true
		local mark = vim.api.nvim_buf_get_mark(buf, '"')
		local lcount = vim.api.nvim_buf_line_count(buf)
		if mark[1] > 0 and mark[1] <= lcount then
			pcall(vim.api.nvim_win_set_cursor, 0, mark)
		end
	end,
})

vim.api.nvim_create_autocmd({ "ColorScheme", "BufReadPost" }, {
	pattern = { "*patch.diff" },
	callback = function()
		vim.api.nvim_set_hl(0, "PRDiffAdd", { fg = "#232634", bg = "#a6da95" })
		vim.api.nvim_set_hl(0, "PRDiffDel", { fg = "#d7e3d8", bg = "#e82424" })
		vim.cmd.syntax([[match PRDiffAdd /\v^[\+]((\-\-)|(\@\@ )|(\+\+)|(index )|(diff ))@!.*/]])
		vim.cmd.syntax([[match PRDiffDel /\v^[\-]((\-\-)|(\@\@ )|(\+\+)|(index )|(diff ))@!.*/]])
	end,
})

vim.api.nvim_create_autocmd("LspAttach", {
	group = vim.api.nvim_create_augroup('lsp-attach', { clear = true }),
	callback = function(event)
		local map = function(keys, func, desc)
			vim.keymap.set("n", keys, func, { buffer = event.buf, desc = "LSP: " .. desc })
		end

		-- defaults:
		-- https://neovim.io/doc/user/news-0.11.html#_defaults

		map("gl", vim.diagnostic.open_float, "Open Diagnostic Float")
		map("K", vim.lsp.buf.hover, "Hover Documentation")
		map("gs", vim.lsp.buf.signature_help, "Signature Documentation")
		map("gD", vim.lsp.buf.declaration, "Goto Declaration")
		map("<leader>la", vim.lsp.buf.code_action, "Code Action")
		map("<leader>lr", vim.lsp.buf.rename, "Rename all references")
		map("<leader>lf", vim.lsp.buf.format, "Format")
		map("<leader>v", "<cmd>vsplit | lua vim.lsp.buf.definition()<cr>", "Goto Definition in Vertical Split")

		local function client_supports_method(client, method, bufnr)
			if vim.fn.has 'nvim-0.11' == 1 then
				return client:supports_method(method, bufnr)
			else
				return client.supports_method(method, { bufnr = bufnr })
			end
		end

		local client = vim.lsp.get_client_by_id(event.data.client_id)
		if client and client_supports_method(client, vim.lsp.protocol.Methods.textDocument_documentHighlight, event.buf) then
			local highlight_augroup = vim.api.nvim_create_augroup('lsp-highlight', { clear = false })

			-- When cursor stops moving: Highlights all instances of the symbol under the cursor
			-- When cursor moves: Clears the highlighting
			vim.api.nvim_create_autocmd({ 'CursorHold', 'CursorHoldI' }, {
				buffer = event.buf,
				group = highlight_augroup,
				callback = vim.lsp.buf.document_highlight,
			})
			vim.api.nvim_create_autocmd({ 'CursorMoved', 'CursorMovedI' }, {
				buffer = event.buf,
				group = highlight_augroup,
				callback = vim.lsp.buf.clear_references,
			})

			-- When LSP detaches: Clears the highlighting
			vim.api.nvim_create_autocmd('LspDetach', {
				group = vim.api.nvim_create_augroup('lsp-detach', { clear = true }),
				callback = function(event2)
					vim.lsp.buf.clear_references()
					vim.api.nvim_clear_autocmds { group = 'lsp-highlight', buffer = event2.buf }
				end,
			})
		end
	end,
})