--
-- 50-fzf.lua
--
-- * Configures fzf.
--
-- Keymaps:
--   `<Leader>ff`: File picker
--   `<Leader>fg`: Grep picker
--   `<Leader>fb`: Buffer picker
--   `<Leader>fh`: Help tag picker
--   `<Leader>fr`: Resume last picker

-- Avoid conflicts with the already existing fzf configuration at ~/.config/fzf/fzf.bash
vim.env.FZF_DEFAULT_OPTS = nil

local fzf = require("fzf-lua")

-- Copy selected entries' paths to the clipboard (icon-stripped via entry_to_file).
local function copy_to_clipboard(selected, opts)
	local entry_to_file = require("fzf-lua.path").entry_to_file
	vim.fn.setreg(
		"+",
		table.concat(
			vim.tbl_map(function(sel)
				return entry_to_file(sel, opts).path
			end, selected),
			"\n"
		)
	)
end

fzf.setup({
	winopts = {
		preview = {
			layout = "flex",
			flip_columns = 120,
		},
	},
	keymap = {
		fzf = {
			true, -- inherit defaults
			["tab"] = "down",
			["btab"] = "up",
			["ctrl-y"] = "toggle",
		},
		builtin = {
			true, -- inherit defaults
			["<M-/>"] = "toggle-preview",
			["<C-n>"] = "preview-half-page-down",
			["<C-p>"] = "preview-half-page-up",
		},
	},
	actions = {
		files = { true, ["alt-y"] = copy_to_clipboard },
	},
	-- Sticky footer of keybinding hints, like --footer in ~/.config/fzf/fzf.bash.
	fzf_opts = {
		["--footer"] = table.concat({
			"Alt+Y      copy to clipboard",
			"Ctrl+Y     toggle selection",
			"Alt+/      show/hide preview",
		}, "\n"),
	},
})

----------------------------------------------------------------------------------------------------

vim.keymap.set("n", "<Leader>ff", fzf.files, { desc = "Fuzzy-find files" })
vim.keymap.set("n", "<Leader>fg", fzf.live_grep, { desc = "Fuzzy-find files content" })
vim.keymap.set("n", "<Leader>fb", fzf.buffers, { desc = "Fuzzy-find buffers" })
vim.keymap.set("n", "<Leader>fh", fzf.helptags, { desc = "Fuzzy-find help tags" })
vim.keymap.set("n", "<Leader>fr", fzf.resume, { desc = "Resume last fuzzy-find picker" })