feat(colors): allow color overrides for shades with predefined colors

lua/mellifluous/color.lua

@@ -70,10 +70,6 @@ function color_meta:with_lightness(val)
     return M.new(oklch_to_hex(oklch))
 end
 
-function color_meta:get_hsl()
-    return hex_to_okhsl(self.hex)
-end
-
 function color_meta:saturated(val)
     local okhsl = hex_to_okhsl(self.hex)
     okhsl.s = clip(okhsl.s + val, 0, 100)

lua/mellifluous/colors/init.lua

@@ -10,25 +10,41 @@ function M.get_color_sets_table()
     }
 end
 
-local function tbl_extend_non_nil(base_table, overlay_table)
-    for key, _ in pairs(overlay_table) do
-        base_table[key] = overlay_table[key] or base_table[key]
+local function get_color_overrides_bg()
+    local config = require('mellifluous.config').config
+    local global_color_overrides_bg = vim.tbl_get(config,
+        'color_overrides', config.is_bg_dark and 'dark' or 'light', 'bg')
+    local color_overrides_bg = vim.tbl_get(config, config.color_set,
+        'color_overrides', config.is_bg_dark and 'dark' or 'light', 'bg')
+
+    if color_overrides_bg == nil then
+        color_overrides_bg = global_color_overrides_bg
     end
+
+    return color_overrides_bg
 end
 
-local function get_color_overrides(is_bg_dark, color_set_name)
+local function apply_color_overrides(colors)
     local config = require('mellifluous.config').config
-    local color_overrides = vim.tbl_get(config, color_set_name,
-        'color_overrides', is_bg_dark and 'dark' or 'light') or {}
-
-    for key, color in pairs(color_overrides) do
-        if color.hex then -- overrides were already converted to mellifluous.color
-            break
-        end
-        color_overrides[key] = require('mellifluous.color').new(color)
+    local global_color_overrides_fn = vim.tbl_get(config,
+        'color_overrides', config.is_bg_dark and 'dark' or 'light', 'colors')
+    local color_overrides_fn = vim.tbl_get(config, config.color_set,
+        'color_overrides', config.is_bg_dark and 'dark' or 'light', 'colors')
+
+    if global_color_overrides_fn ~= nil then
+        colors = vim.tbl_deep_extend('force', colors, global_color_overrides_fn(colors))
     end
+    if color_overrides_fn ~= nil then
+        colors = vim.tbl_deep_extend('force', colors, color_overrides_fn(colors))
+    end
+    return colors
+end
 
-    return color_overrides
+local function ensure_correct_color_types(colors)
+    local color_lib = require('mellifluous.color')
+    for key, color in pairs(colors) do
+        colors[key] = color_lib.new(color.hex or color)
+    end
 end
 
 function M.get_is_bg_dark(color_set_name)
@@ -59,19 +75,20 @@ function M.get_colors()
         require('mellifluous').return_error("Color set '" .. config.color_set .. "' not found")
     end
 
-    local color_overrides = get_color_overrides(config.is_bg_dark, config.color_set)
+    local color_overrides_bg = get_color_overrides_bg()
 
     local color_set_functions = require('mellifluous.colors.sets.' .. config.color_set)
     local colors
     if config.is_bg_dark then
-        colors = color_set_functions.get_colors_dark(color_overrides.bg or color_set_functions.get_bg_dark())
+        colors = color_set_functions.get_colors_dark(color_overrides_bg or color_set_functions.get_bg_dark())
     else
-        colors = color_set_functions.get_colors_light(color_overrides.bg or color_set_functions.get_bg_light())
+        colors = color_set_functions.get_colors_light(color_overrides_bg or color_set_functions.get_bg_light())
     end
 
-    tbl_extend_non_nil(colors, color_overrides)
+    colors = apply_color_overrides(colors)
+    ensure_correct_color_types(colors)
 
-    colors = require'mellifluous.colors.shades'.extend_with_shades(colors)
+    colors = require('mellifluous.colors.shades').extend_with_shades(colors)
 
     return colors
 end

lua/mellifluous/colors/shades.lua

@@ -23,9 +23,9 @@ function M.extend_with_shades(colors)
             fg5 = fg:darkened(54),
             dark_bg = colors.bg:darkened(2.5),
             bg2 = colors.bg:lightened(4),
-            bg3 = colors.bg:lightened(7),
-            bg4 = colors.bg:lightened(10),
-            bg5 = colors.bg:lightened(13),
+            bg3 = colors.bg:lightened(6),
+            bg4 = colors.bg:lightened(8),
+            bg5 = colors.bg:lightened(10),
         }
     else
         shades = {
@@ -41,8 +41,8 @@ function M.extend_with_shades(colors)
         }
     end
 
-    colors = vim.tbl_extend('force', colors, shared_shades)
-    return vim.tbl_extend('force', colors, shades)
+    colors = vim.tbl_extend('keep', colors, shared_shades)
+    return vim.tbl_extend('keep', colors, shades)
 end
 
 return M