-- The MIT License (MIT)
--
-- Copyright © 2026 Scott E. Graves <scott.e.graves@protonmail.com>
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy of this software
-- and associated documentation files (the “Software”), to deal in the Software without restriction,
-- including without limitation the rights to use, copy, modify, merge, publish, distribute,
-- sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in all copies or
-- substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
-- BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--
local hipatterns = require("mini.hipatterns")

local color_group = function(_, match)
  local hex = match
  if #match == 4 or #match == 5 then
    local red, green, blue = match:sub(2, 2), match:sub(3, 3), match:sub(4, 4)
    hex = "#" .. red .. red .. green .. green .. blue .. blue
  end

  return hipatterns.compute_hex_color_group(hex:sub(1, 7), "bg")
end

local named_color_group = function(_, match)
  -- Match colorizer's default of accepting lower- and CamelCase names, but
  -- not names written entirely in uppercase.
  if #match > 1 and match == match:upper() then
    return nil
  end

  local ok, color = pcall(vim.api.nvim_get_color_by_name, match)
  if not ok or color < 0 then
    return nil
  end

  return hipatterns.compute_hex_color_group(
    string.format("#%06x", color),
    "bg"
  )
end

hipatterns.setup(
  {
    highlighters = {
      hex_color = hipatterns.gen_highlighter.hex_color(),
      hex_short = {
        pattern = {
          "()#%x%x%x()%f[^%x]",
          "()#%x%x%x%x()%f[^%x]"
        },
        group = color_group
      },
      named_color = {
        pattern = "%f[%w]()[%a][%w]*()%f[^%w]",
        group = named_color_group
      }
    }
  }
)