-- lua/plugins/colorscheme.lua
-- Custom "orng" colorscheme — dark and light variants.
-- Palette source: https://gist.github.com/axeldotdev/9b441e22147d2d838624d82357ac4302
--
-- Usage:
--   :colorscheme orng        → dark  (bg #0a0a0a)
--   :colorscheme orng-light  → light (bg #ffffff)

-- ── Shared accent colors ───────────────────────────────────────────────────
local accent = {
  orange = '#EC5B2B',
  orange_br = '#EE7948',
  cyan = '#56b6c2',
  red = '#e06c75',
}

-- ── Dark palette ───────────────────────────────────────────────────────────
local dark = {
  bg = '#0a0a0a',
  fg = '#eeeeee',
  orange = accent.orange,
  orange_br = accent.orange_br,
  yellow = '#e5c07b',
  yellow_br = '#FFF7F1',
  blue = '#6ba1e6',
  cyan = accent.cyan,
  red = accent.red,
  gray1 = '#1a1a1a', -- panel / float bg
  gray2 = '#2a2a2a', -- prompt bg
  gray3 = '#3a3a3a', -- borders / separators
  gray4 = '#606060', -- comments / inactive
  gray5 = '#888888', -- delimiters
  sel_bg = accent.orange,
  sel_fg = '#0a0a0a',
  diff_add = '#0d1f2d',
  diff_chg = '#1f1a0d',
  diff_del = '#1f0d0d',
  diff_txt = '#2a1a0a',
  vt_err = '#1f0d0d',
  vt_warn = '#1f1a0d',
  vt_info = '#0d1020',
  vt_hint = '#0d1a1a',
}

-- ── Light palette ──────────────────────────────────────────────────────────
local light = {
  bg = '#ffffff',
  fg = '#1a1a1a',
  orange = '#D44A1A', -- slightly darker than accent for readability on white
  orange_br = accent.orange,
  yellow = '#b07800',
  yellow_br = '#8a5c00',
  blue = '#2d6fc4',
  cyan = '#1a7a87',
  red = '#c0334a',
  gray1 = '#f5f0eb', -- panel / float bg  (warm off-white)
  gray2 = '#ede8e2', -- prompt bg
  gray3 = '#d4cfc8', -- borders / separators
  gray4 = '#999999', -- comments / inactive
  gray5 = '#777777', -- delimiters
  sel_bg = accent.orange,
  sel_fg = '#ffffff',
  diff_add = '#ddeeff',
  diff_chg = '#fff3cc',
  diff_del = '#ffd6d6',
  diff_txt = '#ffe0b2',
  vt_err = '#fde8e8',
  vt_warn = '#fef9e0',
  vt_info = '#e8f0fd',
  vt_hint = '#e0f5f5',
}

-- ── Highlight helper ───────────────────────────────────────────────────────
local function hi(group, opts)
  vim.api.nvim_set_hl(0, group, opts)
end

-- ── Apply function — called with either `dark` or `light` palette ──────────
local function apply(c, variant)
  local bg_mode = variant == 'light' and 'light' or 'dark'
  vim.o.background = bg_mode
  vim.cmd.highlight 'clear'
  if vim.fn.exists 'syntax_on' == 1 then
    vim.cmd.syntax 'reset'
  end
  vim.g.colors_name = 'orng' .. (variant == 'light' and '-light' or '')

  -- Editor chrome
  hi('Normal', { fg = c.fg, bg = c.bg })
  hi('NormalFloat', { fg = c.fg, bg = c.gray1 })
  hi('NormalNC', { fg = c.fg, bg = c.bg })
  hi('FloatBorder', { fg = c.orange, bg = c.gray1 })
  hi('FloatTitle', { fg = c.orange_br, bg = c.gray1, bold = true })
  hi('ColorColumn', { bg = c.gray1 })
  hi('CursorLine', { bg = c.gray1 })
  hi('CursorLineNr', { fg = c.orange, bold = true })
  hi('LineNr', { fg = c.gray4 })
  hi('SignColumn', { fg = c.gray4, bg = c.bg })
  hi('Folded', { fg = c.gray4, bg = c.gray1 })
  hi('FoldColumn', { fg = c.gray4, bg = c.bg })
  hi('VertSplit', { fg = c.gray3 })
  hi('WinSeparator', { fg = c.gray3 })
  hi('EndOfBuffer', { fg = c.gray3 })

  -- Cursor & selection
  hi('Cursor', { fg = c.bg, bg = c.fg })
  hi('CursorIM', { fg = c.bg, bg = c.fg })
  hi('Visual', { fg = c.sel_fg, bg = c.sel_bg })
  hi('VisualNOS', { fg = c.sel_fg, bg = c.sel_bg })

  -- Status / tab line
  hi('StatusLine', { fg = c.fg, bg = c.gray2 })
  hi('StatusLineNC', { fg = c.gray4, bg = c.gray1 })
  hi('TabLine', { fg = c.gray4, bg = c.gray1 })
  hi('TabLineFill', { bg = c.gray1 })
  hi('TabLineSel', { fg = c.fg, bg = c.gray2, bold = true })

  -- Pmenu
  hi('Pmenu', { fg = c.fg, bg = c.gray1 })
  hi('PmenuSel', { fg = c.sel_fg, bg = c.orange })
  hi('PmenuSbar', { bg = c.gray2 })
  hi('PmenuThumb', { bg = c.orange })
  hi('PmenuBorder', { fg = c.orange })

  -- Search
  hi('Search', { fg = c.bg, bg = c.yellow })
  hi('IncSearch', { fg = c.bg, bg = c.orange })
  hi('CurSearch', { fg = c.bg, bg = c.orange_br })
  hi('Substitute', { fg = c.bg, bg = c.orange })

  -- Messages
  hi('ErrorMsg', { fg = c.red, bold = true })
  hi('WarningMsg', { fg = c.yellow })
  hi('ModeMsg', { fg = c.orange, bold = true })
  hi('MoreMsg', { fg = c.orange })
  hi('Question', { fg = c.blue })

  -- Diff
  hi('DiffAdd', { fg = c.blue, bg = c.diff_add })
  hi('DiffChange', { fg = c.yellow, bg = c.diff_chg })
  hi('DiffDelete', { fg = c.red, bg = c.diff_del })
  hi('DiffText', { fg = c.orange_br, bg = c.diff_txt, bold = true })
  hi('Added', { fg = c.blue })
  hi('Changed', { fg = c.yellow })
  hi('Removed', { fg = c.red })

  -- Spelling
  hi('SpellBad', { undercurl = true, sp = c.red })
  hi('SpellCap', { undercurl = true, sp = c.yellow })
  hi('SpellLocal', { undercurl = true, sp = c.blue })
  hi('SpellRare', { undercurl = true, sp = c.cyan })

  -- Syntax
  hi('Comment', { fg = c.gray4, italic = true })
  hi('Constant', { fg = c.orange_br })
  hi('String', { fg = c.yellow_br })
  hi('Character', { fg = c.yellow_br })
  hi('Number', { fg = c.orange_br })
  hi('Boolean', { fg = c.orange, bold = true })
  hi('Float', { fg = c.orange_br })
  hi('Identifier', { fg = c.fg })
  hi('Function', { fg = c.orange, bold = true })
  hi('Statement', { fg = c.orange })
  hi('Conditional', { fg = c.orange })
  hi('Repeat', { fg = c.orange })
  hi('Label', { fg = c.orange })
  hi('Operator', { fg = c.yellow })
  hi('Keyword', { fg = c.orange, bold = true })
  hi('Exception', { fg = c.red })
  hi('PreProc', { fg = c.blue })
  hi('Include', { fg = c.blue })
  hi('Define', { fg = c.blue })
  hi('Macro', { fg = c.blue })
  hi('PreCondit', { fg = c.blue })
  hi('Type', { fg = c.yellow })
  hi('StorageClass', { fg = c.yellow })
  hi('Structure', { fg = c.yellow })
  hi('Typedef', { fg = c.yellow })
  hi('Special', { fg = c.cyan })
  hi('SpecialChar', { fg = c.cyan })
  hi('Tag', { fg = c.orange })
  hi('Delimiter', { fg = c.gray5 })
  hi('SpecialComment', { fg = c.gray4, italic = true })
  hi('Debug', { fg = c.red })
  hi('Underlined', { underline = true })
  hi('Ignore', { fg = c.gray4 })
  hi('Error', { fg = c.red, bold = true })
  hi('Todo', { fg = c.bg, bg = c.orange, bold = true })

  -- Treesitter
  hi('@variable', { fg = c.fg })
  hi('@variable.builtin', { fg = c.orange_br })
  hi('@variable.parameter', { fg = c.fg })
  hi('@variable.member', { fg = c.fg })
  hi('@constant', { fg = c.orange_br })
  hi('@constant.builtin', { fg = c.orange, bold = true })
  hi('@constant.macro', { fg = c.blue })
  hi('@string', { fg = c.yellow_br })
  hi('@string.escape', { fg = c.cyan })
  hi('@string.special', { fg = c.cyan })
  hi('@character', { fg = c.yellow_br })
  hi('@number', { fg = c.orange_br })
  hi('@boolean', { fg = c.orange, bold = true })
  hi('@float', { fg = c.orange_br })
  hi('@function', { fg = c.orange, bold = true })
  hi('@function.builtin', { fg = c.orange_br })
  hi('@function.call', { fg = c.orange })
  hi('@function.macro', { fg = c.blue })
  hi('@function.method', { fg = c.orange })
  hi('@function.method.call', { fg = c.orange })
  hi('@constructor', { fg = c.yellow })
  hi('@operator', { fg = c.yellow })
  hi('@keyword', { fg = c.orange, bold = true })
  hi('@keyword.function', { fg = c.orange, bold = true })
  hi('@keyword.operator', { fg = c.yellow })
  hi('@keyword.return', { fg = c.orange, bold = true })
  hi('@keyword.import', { fg = c.blue })
  hi('@keyword.conditional', { fg = c.orange })
  hi('@keyword.repeat', { fg = c.orange })
  hi('@keyword.exception', { fg = c.red })
  hi('@type', { fg = c.yellow })
  hi('@type.builtin', { fg = c.yellow, bold = true })
  hi('@type.definition', { fg = c.yellow })
  hi('@attribute', { fg = c.blue })
  hi('@property', { fg = c.fg })
  hi('@punctuation.delimiter', { fg = c.gray5 })
  hi('@punctuation.bracket', { fg = c.gray5 })
  hi('@punctuation.special', { fg = c.cyan })
  hi('@comment', { fg = c.gray4, italic = true })
  hi('@comment.documentation', { fg = c.gray5, italic = true })
  hi('@tag', { fg = c.orange })
  hi('@tag.attribute', { fg = c.yellow })
  hi('@tag.delimiter', { fg = c.gray5 })
  hi('@markup.heading', { fg = c.orange, bold = true })
  hi('@markup.bold', { fg = c.yellow_br, bold = true })
  hi('@markup.italic', { fg = c.fg, italic = true })
  hi('@markup.link', { fg = c.blue, underline = true })
  hi('@markup.link.url', { fg = c.blue, underline = true })
  hi('@markup.raw', { fg = c.cyan })
  hi('@markup.list', { fg = c.orange })

  -- LSP
  hi('LspReferenceText', { bg = c.gray2 })
  hi('LspReferenceRead', { bg = c.gray2 })
  hi('LspReferenceWrite', { bg = c.gray3 })
  hi('LspInlayHint', { fg = c.gray4, italic = true })
  hi('LspCodeLens', { fg = c.gray4, italic = true })

  -- Diagnostics
  hi('DiagnosticError', { fg = c.red })
  hi('DiagnosticWarn', { fg = c.yellow })
  hi('DiagnosticInfo', { fg = c.blue })
  hi('DiagnosticHint', { fg = c.cyan })
  hi('DiagnosticOk', { fg = c.blue })
  hi('DiagnosticVirtualTextError', { fg = c.red, bg = c.vt_err, italic = true })
  hi('DiagnosticVirtualTextWarn', { fg = c.yellow, bg = c.vt_warn, italic = true })
  hi('DiagnosticVirtualTextInfo', { fg = c.blue, bg = c.vt_info, italic = true })
  hi('DiagnosticVirtualTextHint', { fg = c.cyan, bg = c.vt_hint, italic = true })
  hi('DiagnosticUnderlineError', { undercurl = true, sp = c.red })
  hi('DiagnosticUnderlineWarn', { undercurl = true, sp = c.yellow })
  hi('DiagnosticUnderlineInfo', { undercurl = true, sp = c.blue })
  hi('DiagnosticUnderlineHint', { undercurl = true, sp = c.cyan })

  -- Gitsigns
  hi('GitSignsAdd', { fg = c.blue })
  hi('GitSignsChange', { fg = c.yellow })
  hi('GitSignsDelete', { fg = c.red })

  -- Telescope
  hi('TelescopeBorder', { fg = c.orange, bg = c.gray1 })
  hi('TelescopeNormal', { fg = c.fg, bg = c.gray1 })
  hi('TelescopePromptBorder', { fg = c.orange_br, bg = c.gray2 })
  hi('TelescopePromptNormal', { fg = c.fg, bg = c.gray2 })
  hi('TelescopePromptPrefix', { fg = c.orange, bg = c.gray2 })
  hi('TelescopeResultsBorder', { fg = c.orange, bg = c.gray1 })
  hi('TelescopePreviewBorder', { fg = c.gray3, bg = c.gray1 })
  hi('TelescopeSelection', { fg = c.sel_fg, bg = c.orange })
  hi('TelescopeSelectionCaret', { fg = c.sel_fg, bg = c.orange })
  hi('TelescopeMatching', { fg = c.orange_br, bold = true })
  hi('TelescopeTitle', { fg = c.orange_br, bold = true })

  -- NeoTree
  hi('NeoTreeNormal', { fg = c.fg, bg = c.gray1 })
  hi('NeoTreeNormalNC', { fg = c.fg, bg = c.gray1 })
  hi('NeoTreeVertSplit', { fg = c.gray3, bg = c.gray1 })
  hi('NeoTreeWinSeparator', { fg = c.gray3, bg = c.gray1 })
  hi('NeoTreeDirectoryName', { fg = c.orange })
  hi('NeoTreeDirectoryIcon', { fg = c.orange })
  hi('NeoTreeFileName', { fg = c.fg })
  hi('NeoTreeGitAdded', { fg = c.blue })
  hi('NeoTreeGitModified', { fg = c.yellow })
  hi('NeoTreeGitDeleted', { fg = c.red })
  hi('NeoTreeIndentMarker', { fg = c.gray3 })
  hi('NeoTreeExpander', { fg = c.orange })
  hi('NeoTreeTitleBar', { fg = c.bg, bg = c.orange, bold = true })

  -- Which-key
  hi('WhichKey', { fg = c.orange })
  hi('WhichKeyGroup', { fg = c.yellow })
  hi('WhichKeyDesc', { fg = c.fg })
  hi('WhichKeySeparator', { fg = c.gray4 })
  hi('WhichKeyFloat', { bg = c.gray1 })
  hi('WhichKeyBorder', { fg = c.orange, bg = c.gray1 })

  -- Blink.cmp
  hi('BlinkCmpMenu', { fg = c.fg, bg = c.gray1 })
  hi('BlinkCmpMenuBorder', { fg = c.orange, bg = c.gray1 })
  hi('BlinkCmpMenuSelection', { fg = c.sel_fg, bg = c.orange })
  hi('BlinkCmpScrollBarThumb', { bg = c.orange })
  hi('BlinkCmpScrollBarGutter', { bg = c.gray2 })
  hi('BlinkCmpLabel', { fg = c.fg })
  hi('BlinkCmpLabelMatch', { fg = c.orange_br, bold = true })
  hi('BlinkCmpKind', { fg = c.yellow })
  hi('BlinkCmpDoc', { fg = c.fg, bg = c.gray1 })
  hi('BlinkCmpDocBorder', { fg = c.gray3, bg = c.gray1 })

  -- Mini.statusline
  hi('MiniStatuslineModeNormal', { fg = c.bg, bg = c.orange, bold = true })
  hi('MiniStatuslineModeInsert', { fg = c.bg, bg = c.blue, bold = true })
  hi('MiniStatuslineModeVisual', { fg = c.bg, bg = c.yellow, bold = true })
  hi('MiniStatuslineModeReplace', { fg = c.bg, bg = c.red, bold = true })
  hi('MiniStatuslineModeCommand', { fg = c.bg, bg = c.orange_br, bold = true })
  hi('MiniStatuslineModeOther', { fg = c.bg, bg = c.gray4, bold = true })
  hi('MiniStatuslineDevinfo', { fg = c.fg, bg = c.gray2 })
  hi('MiniStatuslineFilename', { fg = c.fg, bg = c.gray2 })
  hi('MiniStatuslineFileinfo', { fg = c.fg, bg = c.gray2 })
  hi('MiniStatuslineInactive', { fg = c.gray4, bg = c.gray1 })

  -- Todo-comments
  hi('TodoBgTODO', { fg = c.bg, bg = c.orange, bold = true })
  hi('TodoBgNOTE', { fg = c.bg, bg = c.blue, bold = true })
  hi('TodoBgFIX', { fg = c.bg, bg = c.red, bold = true })
  hi('TodoBgWARN', { fg = c.bg, bg = c.yellow, bold = true })
  hi('TodoBgHACK', { fg = c.bg, bg = c.yellow, bold = true })
  hi('TodoBgPERF', { fg = c.bg, bg = c.cyan, bold = true })
  hi('TodoFgTODO', { fg = c.orange })
  hi('TodoFgNOTE', { fg = c.blue })
  hi('TodoFgFIX', { fg = c.red })
  hi('TodoFgWARN', { fg = c.yellow })
  hi('TodoFgHACK', { fg = c.yellow })
  hi('TodoFgPERF', { fg = c.cyan })
end

-- ── Helper: pick palette from macOS system appearance ─────────────────────
local function is_dark_mode()
  local out = vim.fn.system 'defaults read -g AppleInterfaceStyle 2>/dev/null'
  return out:match 'Dark' ~= nil
end

-- ── Apply on startup based on system appearance ────────────────────────────
if is_dark_mode() then
  apply(dark, 'dark')
else
  apply(light, 'light')
end

-- ── Re-apply on explicit :colorscheme calls ────────────────────────────────
-- These autocmds let :colorscheme orng / orng-light work mid-session.
-- Note: they fire only if a colors/orng*.vim stub exists; we create one below.
vim.api.nvim_create_autocmd('ColorScheme', {
  pattern = 'orng',
  callback = function()
    apply(dark, 'dark')
  end,
})

vim.api.nvim_create_autocmd('ColorScheme', {
  pattern = 'orng-light',
  callback = function()
    apply(light, 'light')
  end,
})

return {}