New neovim theme engine (#1985)

* feat(matugen)!: rework completely neovim's theme engine

* fix: link to neovim theme plugin

* fix: expect AvengeMedia/base46 instead of Silzinc/base46

quickshell/matugen/configs/neovim.toml

@@ -1,3 +1,3 @@
 [templates.dmsneovim]
 input_path = 'SHELL_DIR/matugen/templates/neovim.lua'
-output_path = 'CONFIG_DIR/nvim/lua/plugins/dankcolors.lua'
+output_path = 'CONFIG_DIR/nvim/colors/dms.lua'

quickshell/matugen/templates/neovim.lua

@@ -1,40 +1,83 @@
-return {
-	{
-		"RRethy/base16-nvim",
-		priority = 1000,
-		config = function()
-			require('base16-colorscheme').setup({
+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 = "dms integration" }
+	)
+	return
+end
 
-				base00 = '{{colors.background.dark.hex}}',
-				base01 = '{{colors.surface_container_low.dark.hex}}',
-				base02 = '{{colors.surface_container.dark.hex}}',
-				base03 = '{{dank16.color8.dark.hex}}',
-				base0B = '{{dank16.color3.dark.hex}}',
-				base04 = '{{dank16.color7.default.hex}}',
-				base05 = '{{dank16.color15.default.hex}}',
-				base06 = '{{dank16.color15.default.hex}}',
-				base07 = '{{dank16.color15.default.hex}}',
-				base08 = '{{dank16.color9.default.hex}}',
-				base09 = '{{dank16.color9.default.hex}}',
-				base0A = '{{dank16.color12.default.hex}}',
-				base0C = '{{dank16.color14.default.hex}}',
-				base0D = '{{dank16.color12.default.hex}}',
-				base0E = '{{dank16.color13.default.hex}}',
-				base0F = '{{dank16.color13.default.hex}}',
-			})
+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 settings_file_path = vim.fs.joinpath(config_home, "DankMaterialShell", "settings.json")
+local settings_file = io.open(settings_file_path, "r")
+if settings_file == nil then
+	vim.notify(
+		"cannnot read dms settings file at '" .. settings_file_path .. "'",
+		vim.log.levels.ERROR,
+		{ title = "dms integration" }
+	)
+	return
+end
+local settings = vim.json.decode(settings_file:read("*a"))
+settings_file:close()
 
-			local current_file_path = vim.fn.stdpath("config") .. "/lua/plugins/dankcolors.lua"
-			if not _G._matugen_theme_watcher then
-				local uv = vim.uv or vim.loop
-				_G._matugen_theme_watcher = uv.new_fs_event()
-				_G._matugen_theme_watcher:start(current_file_path, {}, vim.schedule_wrap(function()
-					local new_spec = dofile(current_file_path)
-					if new_spec and new_spec[1] and new_spec[1].config then
-						new_spec[1].config()
-						print("Theme reload")
-					end
-				end))
-			end
+local function deepGet(t, k)
+	for _, s in ipairs(k) do
+		if type(t) ~= "table" then
+			return
 		end
-	}
-}
+		t = t[s]
+	end
+	return t
+end
+
+local current_file_path = debug.getinfo(1, "S").source:sub(2)
+local theme_base = deepGet(settings, { "matugenTemplateNeovimSettings", vim.o.background, "baseTheme" })
+	or ("github_" .. vim.o.background)
+local harmony = deepGet(settings, { "matugenTemplateNeovimSettings", vim.o.background, "harmony" }) or 0.5
+local theme_name = "dms"
+
+if not _G._matugen_theme_watcher then
+	local uv = vim.uv or vim.loop
+	_G._matugen_theme_watcher = { uv.new_fs_event(), 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)
+					vim.notify("Theme reload", vim.log.levels.INFO, { title = "dms integration" })
+				end
+				-- NOTE: contrary to what the documentation says, uv fs events usually do not manage to react to more than one edit.
+				-- I understand that this is not intended: some edit processes in a typical system (e.g. the one neovim uses with
+				-- multiple renames and changes) make things hard to follow for libuv. Therefore, a restart is the best option.
+				_G._matugen_theme_watcher[1]:stop()
+				_G._matugen_theme_watcher[2]:stop()
+				_G._matugen_theme_watcher[1]:start(current_file_path, {}, handler)
+				_G._matugen_theme_watcher[2]:start(settings_file_path, {}, handler)
+			end)
+		)
+	end
+	_G._matugen_theme_watcher[1]:start(current_file_path, {}, handler)
+	_G._matugen_theme_watcher[2]:start(settings_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.default.hex}}", harmony)
+	harmonized = base46.theme_set_bg(harmonized, "{{colors.background.default.hex}}")
+
+	base46.theme_tables[theme_name] = harmonized
+end
+
+base46.load(theme_name)
+vim.g.colors_name = theme_name