local M = { "nvim-lualine/lualine.nvim" }

M.opts = function()
	local colors = require("tokyonight.colors").setup({ transform = true })
	local icons = require("config.icons")
	local conditions = {
		buffer_not_empty = function()
			return vim.fn.empty(vim.fn.expand("%:t")) ~= 1
		end,
		hide_in_width = function()
			return vim.fn.winwidth(0) > 80
		end,
		check_git_workspace = function()
			local filepath = vim.fn.expand("%:p:h")
			local gitdir = vim.fn.finddir(".git", filepath .. ";")
			return gitdir and #gitdir > 0 and #gitdir < #filepath
		end,
	}

	local function search_result()
		if vim.v.hlsearch == 0 then
			return ""
		end
		local last_search = vim.fn.getreg("/")
		if not last_search or last_search == "" then
			return ""
		end
		local searchcount = vim.fn.searchcount({ maxcount = 9999 })
		return last_search .. "(" .. searchcount.current .. "/" .. searchcount.total .. ")"
	end

	local config = {
		options = {
			component_separators = "",
			section_separators = "",
			-- theme = {
			--   normal = { c = { fg = colors.fg, bg = colors.bg } },
			--   inactive = { c = { fg = colors.fg, bg = colors.bg } },
			-- },
			disabled_filetypes = {
				statusline = { "alpha" },
			},
			ignore_focus = { "toggleterm", "NvimTree" },
			globalstatus = true,
		},
		sections = {
			lualine_a = {},
			lualine_b = {},
			lualine_y = {},
			lualine_z = {},
			lualine_c = {},
			lualine_x = {},
		},
		inactive_sections = {
			lualine_a = {},
			lualine_b = {},
			lualine_y = {},
			lualine_z = {},
			lualine_c = {},
			lualine_x = {},
		},
	}

	local function ins_left(component)
		table.insert(config.sections.lualine_c, component)
	end

	local function ins_right(component)
		table.insert(config.sections.lualine_x, component)
	end

	local function mode_color()
		local color = {
			n = colors.red,
			i = colors.green,
			v = colors.magenta,
			[string.char(22)] = colors.magenta,
			V = colors.magenta,
			c = colors.blue,
			no = colors.red,
			s = colors.orange,
			S = colors.orange,
			[string.char(19)] = colors.orange,
			ic = colors.yellow,
			R = colors.violet,
			Rv = colors.violet,
			cv = colors.red,
			ce = colors.red,
			r = colors.cyan,
			rm = colors.cyan,
			["r?"] = colors.cyan,
			["!"] = colors.red,
			t = colors.red,
		}
		return { fg = color[vim.fn.mode()] }
	end

	ins_left({
		function()
			return "▊"
		end,
		color = function()
			return mode_color()
		end,
		padding = { right = 1 },
	})

	ins_left({
		"filename",
		cond = conditions.buffer_not_empty,
		color = { fg = colors.magenta, gui = "bold" },
	})

	ins_left({
		"fileformat",
		fmt = string.upper,
		icons_enabled = false,
		color = { fg = colors.green },
	})

	ins_left({
		"o:encoding",
		fmt = string.upper,
		cond = conditions.hide_in_width,
		color = { fg = colors.green },
	})

	ins_left({
		"filesize",
		fmt = string.upper,
		icons_enabled = false,
		color = { fg = colors.green },
	})

	ins_left({
		"%04l:%04c",
	})

	-- NOTE: My beloved :(

	-- ins_left {
	--     function()
	--         local current_line = vim.fn.line "."
	--         local total_lines = vim.fn.line "$"
	--         local chars = icons.progress
	--         local line_ratio = current_line / total_lines
	--         local index = math.ceil(line_ratio * #chars)
	--         return chars[index]
	--     end,
	--     color = { fg = colors.yellow }
	-- }

	ins_right({
		search_result,
		color = { fg = colors.white },
		padding = { left = 1 },
	})

	ins_right({
		function()
			local msg = ""
			local buf_ft = vim.api.nvim_buf_get_option(0, "filetype")
			local clients = vim.lsp.get_active_clients()
			if next(clients) == nil then
				return "No LSP"
			end
			for _, client in ipairs(clients) do
				local filetypes = client.config.filetypes
				if filetypes and vim.fn.index(filetypes, buf_ft) ~= -1 then
					msg = msg .. ", " .. client.name
				end
			end
			return msg:sub(3)
		end,
		color = { fg = colors.blue, gui = "bold" },
	})

	ins_right({
		"diagnostics",
		sources = { "nvim_diagnostic" },
		symbols = {
			error = icons.Error .. " ",
			warn = icons.Warn .. " ",
			info = icons.Info .. " ",
		},
		diagnostics_color = {
			color_error = { fg = colors.red },
			color_warn = { fg = colors.yellow },
			color_info = { fg = colors.cyan },
		},
	})

	ins_right({
		"filetype",
		color = { fg = colors.green, gui = "bold" },
		padding = { left = 1 },
	})

	ins_right({
		function()
			return "▊"
		end,
		color = function()
			return mode_color()
		end,
		padding = { left = 1 },
	})

	return config
end

return M