local util = require("catppuccino.utils.util")

local M = {}

local _cs

local function get_cs() -- return a cleaned and parsed colorscheme
	return _cs
end

local function set_cs(val)
	_cs = val
end

local function get_base()

	local cpt = get_cs()

	return {
        Comment = {fg = cpt.comment, style = cpc.styles.comments}, -- any comment
        ColorColumn = {bg = cpt.bg_visual}, -- used for the columns set with 'colorcolumn'
        Conceal = {fg = cpt.black}, -- placeholder characters substituted for concealed text (see 'conceallevel')
        Cursor = {fg = cpt.bg, bg = cpt.fg}, -- character under the cursor
        lCursor = {fg = cpt.bg, bg = cpt.fg}, -- the character under the cursor when |language-mapping| is used (see 'guicursor')
        CursorIM = {fg = cpt.bg, bg = cpt.fg}, -- like Cursor, but used when in IME mode |CursorIM|
        CursorColumn = {bg = cpt.bg_highlight}, -- Screen-column at the cursor, when 'cursorcolumn' is secpt.
        CursorLine = {bg = cpt.bg_highlight}, -- Screen-line at the cursor, when 'cursorline' is secpt.  Low-priority if foreground (ctermfg OR guifg) is not secpt.
        Directory = {fg = cpt.blue}, -- directory names (and other special names in listings)
        EndOfBuffer = {fg = cpt.bg}, -- filler lines (~) after the end of the buffer.  By default, this is highlighted like |hl-NonText|.
        ErrorMsg = {fg = cpt.error}, -- error messages on the command line
        VertSplit = {fg = cpt.border}, -- the column separating vertically split windows
        Folded = {fg = cpt.blue, bg = cpt.fg_gutter}, -- line used for closed folds
        FoldColumn = {bg = cpt.bg, fg = cpt.comment}, -- 'foldcolumn'
        SignColumn = {bg = cpc.transparency and cpt.none or cpt.bg, fg = cpt.fg_gutter}, -- column where |signs| are displayed
        SignColumnSB = {bg = cpt.bg_sidebar, fg = cpt.fg_gutter}, -- column where |signs| are displayed
        Substitute = {bg = cpt.red, fg = cpt.black}, -- |:substitute| replacement text highlighting
        LineNr = {fg = cpt.fg_gutter}, -- Line number for ":number" and ":#" commands, and when 'number' or 'relativenumber' option is secpt.
        CursorLineNr = {fg = cpt.fg_alt}, -- Like LineNr when 'cursorline' or 'relativenumber' is set for the cursor line. highlights the number in numberline.
        MatchParen = {fg = cpt.orange, style = "bold"}, -- The character under the cursor or just before it, if it is a paired bracket, and its match. |pi_paren.txt|
        ModeMsg = {fg = cpt.fg_alt, style = "bold"}, -- 'showmode' message (e.g., "-- INSERT -- ")
        MsgArea = {fg = cpt.white_br}, -- Area for messages and cmdline
        MsgSeparator = {}, -- Separator for scrolled messages, `msgsep` flag of 'display'
        MoreMsg = {fg = cpt.blue}, -- |more-prompt|
        NonText = {fg = cpt.comment}, -- '@' at the end of the window, characters from 'showbreak' and other characters that do not really exist in the text (e.g., ">" displayed when a double-wide character doesn't fit at the end of the line). See also |hl-EndOfBuffer|.
        Normal = {fg = cpt.fg, bg = cpc.transparency and cpt.none or cpt.bg}, -- normal text
        NormalNC = {fg = cpt.fg, bg = cpc.transparency and cpt.none or cpt.bg}, -- normal text in non-current windows
        NormalSB = {fg = cpt.fg_sidebar, bg = cpt.bg_sidebar}, -- normal text in non-current windows
        NormalFloat = {fg = cpt.fg, bg = cpt.bg_float}, -- Normal text in floating windows.
        FloatBorder = {fg = cpt.border_highlight},
        Pmenu = {bg = cpt.bg_popup, fg = cpt.fg}, -- Popup menu: normal item.
        PmenuSel = {fg = cpt.cyan, bg = util.darken(cpt.fg_gutter, 0.8)}, -- Popup menu: selected item.
        PmenuSbar = {bg = util.lighten(cpt.bg_popup, 0.95)}, -- Popup menu: scrollbar.
        PmenuThumb = {bg = cpt.fg_gutter}, -- Popup menu: Thumb of the scrollbar.
        Question = {fg = cpt.blue}, -- |hit-enter| prompt and yes/no questions
        QuickFixLine = {bg = cpt.bg_visual, style = "bold"}, -- Current |quickfix| item in the quickfix window. Combined with |hl-CursorLine| when the cursor is there.
        Search = {bg = cpt.bg_search, fg = cpt.fg}, -- Last search pattern highlighting (see 'hlsearch').  Also used for similar items that need to stand oucpt.
        IncSearch = {bg = cpt.cyan, fg = cpt.black}, -- 'incsearch' highlighting; also used for the text replaced with ":s///c"
        SpecialKey = {fg = cpt.black}, -- Unprintable characters: text displayed differently from what it really is.  But not 'listchars' whitespace. |hl-Whitespace|
        SpellBad = {sp = cpt.error, style = "undercurl"}, -- Word that is not recognized by the spellchecker. |spell| Combined with the highlighting used otherwise.
        SpellCap = {sp = cpt.warning, style = "undercurl"}, -- Word that should start with a capital. |spell| Combined with the highlighting used otherwise.
        SpellLocal = {sp = cpt.info, style = "undercurl"}, -- Word that is recognized by the spellchecker as one that is used in another region. |spell| Combined with the highlighting used otherwise.
        SpellRare = {sp = cpt.hint, style = "undercurl"}, -- Word that is recognized by the spellchecker as one that is hardly ever used.  |spell| Combined with the highlighting used otherwise.
        StatusLine = {fg = cpt.fg_sidebar, bg = cpt.bg_statusline}, -- status line of current window
        StatusLineNC = {fg = cpt.fg_gutter, bg = cpt.bg_statusline}, -- status lines of not-current windows Note: if this is equal to "StatusLine" Vim will use "^^^" in the status line of the current window.
        TabLine = {bg = cpt.bg_statusline, fg = cpt.fg_gutter}, -- tab pages line, not active tab page label
        TabLineFill = {bg = cpt.black}, -- tab pages line, where there are no labels
        TabLineSel = {fg = cpt.fg_alt, bg = cpt.fg_gutter}, -- tab pages line, active tab page label
        Title = {fg = cpt.blue, style = "bold"}, -- titles for output from ":set all", ":autocmd" etcpt.
        Visual = {bg = cpt.bg_visual}, -- Visual mode selection
        VisualNOS = {bg = cpt.bg_visual}, -- Visual mode selection when vim is "Not Owning the Selection".
        WarningMsg = {fg = cpt.warning}, -- warning messages
        Whitespace = {fg = cpt.fg_gutter}, -- "nbsp", "space", "tab" and "trail" in 'listchars'
        WildMenu = {bg = cpt.bg_visual}, -- current match in 'wildmenu' completion
        -- These groups are not listed as default vim groups,
        -- but they are defacto standard group names for syntax highlighting.
        -- commented out groups should chain up to their "preferred" group by
        -- default,
        -- Uncomment and edit if you want more specific syntax highlighting.

		-- code itself

        Constant = {fg = cpt.orange}, -- (preferred) any constant
        String = {fg = cpt.green, style = cpc.styles.strings}, -- a string constant: "this is a string"
        Character = {fg = cpt.green}, --  a character constant: 'c', '\n'
        Number = {fg = cpt.orange_br}, --   a number constant: 234, 0xff
        Float = {fg = cpt.orange_br}, --    a floating point constant: 2.3e10
        Boolean = {fg = cpt.orange_br}, --  a boolean constant: TRUE, false
        Identifier = {fg = cpt.cyan, style = cpc.styles.variables}, -- (preferred) any variable name
        Function = {fg = cpt.blue, style = cpc.styles.fuctions}, -- function name (also: methods for classes)
        Statement = {fg = cpt.magenta_br}, -- (preferred) any statement
        Conditional = {fg = cpt.red}, --  if, then, else, endif, switch, etcpt.
        Repeat = {fg = cpt.red}, --   for, do, while, etcpt.
        Label = {fg = cpt.magenta_br}, --    case, default, etcpt.
        Operator = {fg = cpt.fg_alt}, -- "sizeof", "+", "*", etcpt.
        Keyword = {fg = cpt.magenta, style = cpc.styles.keywords}, --  any other keyword
        -- Exception     = { }, --  try, catch, throw

        PreProc = {fg = cpt.pink}, -- (preferred) generic Preprocessor
        Include = {fg = cpt.pink}, --  preprocessor #include
        -- Define        = { }, --   preprocessor #define
        -- Macro         = { }, --    same as Define
        -- PreCondit     = { }, --  preprocessor #if, #else, #endif, etcpt.

        Type = {fg = cpt.yellow}, -- (preferred) int, long, char, etcpt.
        StorageClass = {fg = cpt.yellow}, -- static, register, volatile, etcpt.
        Structure = {fg = cpt.yellow}, --  struct, union, enum, etcpt.
        Typedef = {fg = cpt.yellow}, --  A typedef
        Special = {fg = cpt.blue}, -- (preferred) any special symbol
        -- SpecialChar   = { }, --  special character in a constant
        -- Tag           = { }, --    you can use CTRL-] on this
        -- Delimiter     = { }, --  character that needs attention
        -- SpecialComment= { }, -- special things inside a comment
        -- Debug         = { }, --    debugging statements

        Underlined = {style = "underline"}, -- (preferred) text that stands out, HTML links
        Bold = {style = "bold"},
        Italic = {style = "italic"},
        -- ("Ignore", below, may be invisible...)
        -- Ignore = { }, -- (preferred) left blank, hidden  |hl-Ignore|

        Error = {fg = cpt.error}, -- (preferred) any erroneous construct
        Todo = {bg = cpt.yellow, fg = cpt.bg}, -- (preferred) anything that needs extra attention; mostly the keywords TODO FIXME and XXX
        qfLineNr = {fg = cpt.yellow},
        qfFileName = {fg = cpt.blue},
        htmlH1 = {fg = cpt.magenta, style = "bold"},
        htmlH2 = {fg = cpt.blue, style = "bold"},
        -- mkdHeading = { fg = cpt.orange, style = "bold" },
        -- mkdCode = { bg = cpt.terminal_black, fg = cpt.fg },
        mkdCodeDelimiter = {bg = cpt.terminal_black, fg = cpt.fg},
        mkdCodeStart = {fg = cpt.cyan, style = "bold"},
        mkdCodeEnd = {fg = cpt.cyan, style = "bold"},
        -- mkdLink = { fg = cpt.blue, style = "underline" },

		-- debugging
        debugPC = {bg = cpt.bg_sidebar}, -- used for highlighting the current line in terminal-debug
        debugBreakpoint = {bg = util.darken(cpt.info, 0.1), fg = cpt.info}, -- used for breakpoint colors in terminal-debug

        -- illuminate
        illuminatedWord = {bg = cpt.fg_gutter},
        illuminatedCurWord = {bg = cpt.fg_gutter},

        -- diff
        diffAdded = {fg = cpt.git.add},
        diffRemoved = {fg = cpt.git.delete},
        diffChanged = {fg = cpt.git.change},
        diffOldFile = {fg = cpt.yellow},
        diffNewFile = {fg = cpt.orange},
        diffFile = {fg = cpt.blue},
        diffLine = {fg = cpt.comment},
        diffIndexLine = {fg = cpt.magenta},

		-- git diff
        DiffAdd = {fg = cpt.diff.add, bg = cpt.bg}, -- diff mode: Added line |diff.txt|
        DiffChange = {fg = cpt.diff.change, bg = cpt.bg}, -- diff mode: Changed line |diff.txt|
        DiffDelete = {fg  = cpt.diff.delete, bg = cpt.bg}, -- diff mode: Deleted line |diff.txt|
        DiffText = {fg = cpt.diff.text, bg = cpt.bg}, -- diff mode: Changed text within a changed line |diff.txt|

        -- NeoVim
        healthError = {fg = cpt.error},
        healthSuccess = {fg = cpt.green_br},
        healthWarning = {fg = cpt.warning},

		-- misc

		-- glyphs
        GlyphPalette1 = {fg = cpt.red},
        GlyphPalette2 = {fg = cpt.green},
        GlyphPalette3 = {fg = cpt.yellow},
        GlyphPalette4 = {fg = cpt.blue},
        GlyphPalette6 = {fg = cpt.green_br},
        GlyphPalette7 = {fg = cpt.fg},
        GlyphPalette9 = {fg = cpt.red},
    }
end

local function get_integrations()
    local integrations = cpc["integrations"]
	local final_integrations = {}
	local cpt = get_cs()

    for integration in pairs(integrations) do
        local cot = false
        if (type(integrations[integration]) == "table") then
            if (integrations[integration]["enabled"] == true) then
                cot = true
            end
        else
            if (integrations[integration] == true) then
                cot = true
            end
        end

        if (cot) then
			table.insert(final_integrations, require("catppuccino.core.integrations." .. integration).get(cpt))
        end
    end

	return final_integrations
end


function M.apply(cs)
	_G.cpc = require("catppuccino.config").options
	cs = cs or cpc.colorscheme
	local good, color_scheme = require("catppuccino.core.cs").get_color_scheme(cs)

	if not good then
		return false, color_scheme -- error message
	end

	set_cs(color_scheme)

    local theme = {}
    theme.base = get_base()
	theme.plugins = get_integrations()

	-- uninstantiate to avoid poluting global scope and because they are not needed anymore
	_G.cpc = nil

    return true, theme
end

return M