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path: root/colors/matugen.lua
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local present, base46 = pcall(require, "base46")
if not present or not base46._DMS_SUPPORT then
	vim.notify(
		"base46 plugin not found or incorrect, make sure to install AvengeMedia/base46",
		vim.log.levels.ERROR,
		{ title = "matugen integration" }
	)
	return
end

local config_home = vim.env.XDG_CONFIG_HOME
if config_home == nil or #config_home == 0 then
	config_home = vim.fs.joinpath(vim.env.HOME, ".config")
end

local colors_file_path = vim.fs.joinpath(config_home, "nvim", "colors.json")
local colors_file = io.open(colors_file_path, "r")
if colors_file == nil then
	vim.notify(
		"cannnot read matugen colors file at '" .. colors_file_path .. "'",
		vim.log.levels.ERROR,
		{ title = "matugen integration" }
	)
	return
end
local colors = vim.json.decode(colors_file:read("*a"))
colors_file:close()

local mode = colors.mode
if mode ~= nil then
	if mode:match("light") then
		vim.o.background = "light"
	elseif mode:match("dark") then
		vim.o.background = "dark"
	end
end

local settings = { matugenTemplateNeovimSetBackground = true }

local theme_base = ("github_" .. vim.o.background)
local harmony = 0.5
local theme_name = "matugen"

if not _G._matugen_theme_watcher then
	local uv = vim.uv or vim.loop
	_G._matugen_theme_watcher = { uv.new_fs_event(), reload_timer = uv.new_timer() }

	local debounce_time = 100 -- ms
	local function handler()
		_G._matugen_theme_watcher.reload_timer:stop()
		_G._matugen_theme_watcher.reload_timer:start(
			debounce_time,
			0,
			vim.schedule_wrap(function()
				base46.theme_tables[theme_name] = nil
				if vim.g.colors_name == theme_name then
					vim.cmd.colorscheme(theme_name)
				end
				_G._matugen_theme_watcher[1]:stop()
				_G._matugen_theme_watcher[1]:start(colors_file_path, {}, handler)
			end)
		)
	end
	_G._matugen_theme_watcher[1]:start(colors_file_path, {}, handler)
end

if not base46.theme_tables[theme_name] or base46.theme_tables[theme_name].type ~= vim.o.background then
	local builtin = vim.deepcopy(assert(base46.get_builtin_theme(theme_base)))
	local harmonized = base46.theme_harmonize(builtin, colors.source_color, harmony)
	if settings.matugenTemplateNeovimSetBackground ~= false then
		harmonized = base46.theme_set_bg(harmonized, colors.background)
	end

	base46.theme_tables[theme_name] = harmonized
end

base46.load(theme_name)
vim.g.colors_name = theme_name