refactor: move config into separate file

lua/rose-pine/config.lua

@@ -0,0 +1,98 @@
+local M = {}
+
+---@class Groups
+---@field background string
+---@field panel string
+---@field border string
+---@field comment string
+---@field link string
+---@field punctuation string
+---@field error string
+---@field hint string
+---@field info string
+---@field warn string
+---@field git_add string
+---@field git_change string
+---@field git_delete string
+---@field git_dirty string
+---@field git_ignore string
+---@field git_merge string
+---@field git_rename string
+---@field git_stage string
+---@field git_text string
+---@field headings Headings|string
+
+---@class Headings
+---@field h1 string
+---@field h2 string
+---@field h3 string
+---@field h4 string
+---@field h5 string
+---@field h6 string
+
+---@class Config
+---@field dark_variant 'main'|'moon'
+---@field bold_vert_split boolean
+---@field dim_nc_background boolean
+---@field disable_background boolean
+---@field disable_float_background boolean
+---@field disable_italics boolean
+---@field groups Groups
+---@field highlight_groups table<string, any>
+local defaults = {
+	dark_variant = 'main',
+	bold_vert_split = false,
+	dim_nc_background = false,
+	disable_background = false,
+	disable_float_background = false,
+	disable_italics = false,
+	highlight_groups = {},
+
+	groups = {
+		background = 'base',
+		panel = 'surface',
+		border = 'highlight_med',
+		comment = 'muted',
+		link = 'iris',
+		punctuation = 'muted',
+		error = 'love',
+		hint = 'iris',
+		info = 'foam',
+		warn = 'gold',
+		git_add = 'foam',
+		git_change = 'rose',
+		git_delete = 'love',
+		git_dirty = 'rose',
+		git_ignore = 'muted',
+		git_merge = 'iris',
+		git_rename = 'pine',
+		git_stage = 'iris',
+		git_text = 'rose',
+		headings = {
+			h1 = 'iris',
+			h2 = 'foam',
+			h3 = 'rose',
+			h4 = 'gold',
+			h5 = 'pine',
+			h6 = 'foam',
+		},
+	},
+}
+
+---@type Config
+M.options = {}
+
+---@param options Config|nil
+function M.setup(options)
+	M.options = vim.tbl_deep_extend('force', {}, defaults, options or {})
+end
+
+---@param options Config|nil
+function M.extend(options)
+	M.options =
+		vim.tbl_deep_extend('force', {}, M.options or defaults, options or {})
+end
+
+M.setup()
+
+return M

lua/rose-pine/palette.lua

@@ -1,3 +1,5 @@
+local options = require('rose-pine.config').options
+
 local variants = {
 	main = {
 		base = '#191724',
@@ -55,12 +57,5 @@ local variants = {
 	},
 }
 
-local palette = {}
-
-if vim.o.background == 'light' then
-	palette = variants.dawn
-else
-	palette = variants[(vim.g.rose_pine_variant == 'moon' and 'moon') or 'main']
-end
-
-return palette
+return vim.o.background == 'light' and variants.dawn
+	or variants[options.dark_variant or 'main']