"============================================================"
"                                                            "
"  Darkcloud Vim Config: theme
"                                                            "
"  Maintainer: Prurigro (prurigro-at-gmail-dot-com)          "
"  Website: https://github.com/prurigro/darkcloud-vimconfig  "
"                                                            "
"  License: MIT                                              "
"                                                            "
"============================================================"
"
" Acknowledgements:
"
"  I found the jellybeans theme part way through creating
"  this one and liked how it scripted compatibility between
"  cterm and gui, so I stripped its colours and ported
"  my own in, using jellybeans as a functional template.
"
"  As referenced in the original jellybean theme, the set
"  of color approximation functions were created by Henry
"  So, Jr. and David Liang
"

"remove all the colours before writing our own
hi clear
if exists("syntax_on")
    syntax reset
endif

if has("gui_running") || &t_Co == 88 || &t_Co == 256
    let s:low_color = 0
else
    let s:low_color = 1
endif

let colors_name = "darkcloud"

"color approximation functionality {{{
    "approximate the grey index from a given grey level
    fun! s:grey_number(x)
        if &t_Co == 88
            if a:x < 23
                return 0
            elseif a:x < 69
                return 1
            elseif a:x < 103
                return 2
            elseif a:x < 127
                return 3
            elseif a:x < 150
                return 4
            elseif a:x < 173
                return 5
            elseif a:x < 196
                return 6
            elseif a:x < 219
                return 7
            elseif a:x < 243
                return 8
            else
                return 9
            endif
        else
            if a:x < 14
                return 0
            else
                let l:n = (a:x - 8) / 10
                let l:m = (a:x - 8) % 10
                if l:m < 5
                    return l:n
                else
                    return l:n + 1
                endif
            endif
        endif
    endfun

    "find the grey level for a given grey index
    fun! s:grey_level(n)
        if &t_Co == 88
            if a:n == 0
                return 0
            elseif a:n == 1
                return 46
            elseif a:n == 2
                return 92
            elseif a:n == 3
                return 115
            elseif a:n == 4
                return 139
            elseif a:n == 5
                return 162
            elseif a:n == 6
                return 185
            elseif a:n == 7
                return 208
            elseif a:n == 8
                return 231
            else
                return 255
            endif
        else
            if a:n == 0
                return 0
            else
                return 8 + (a:n * 10)
            endif
        endif
    endfun

    "find the palette index for a given grey index
    fun! s:grey_color(n)
        if &t_Co == 88
            if a:n == 0
                return 16
            elseif a:n == 9
                return 79
            else
                return 79 + a:n
            endif
        else
            if a:n == 0
                return 16
            elseif a:n == 25
                return 231
            else
                return 231 + a:n
            endif
        endif
    endfun

    "approximate the color index from a given color level
    fun! s:rgb_number(x)
        if &t_Co == 88
            if a:x < 69
                return 0
            elseif a:x < 172
                return 1
            elseif a:x < 230
                return 2
            else
                return 3
            endif
        else
            if a:x < 75
                return 0
            else
                let l:n = (a:x - 55) / 40
                let l:m = (a:x - 55) % 40
                if l:m < 20
                    return l:n
                else
                    return l:n + 1
                endif
            endif
        endif
    endfun

    "find the color level for a given color index
    fun! s:rgb_level(n)
        if &t_Co == 88
            if a:n == 0
                return 0
            elseif a:n == 1
                return 139
            elseif a:n == 2
                return 205
            else
                return 255
            endif
        else
            if a:n == 0
                return 0
            else
                return 55 + (a:n * 40)
            endif
        endif
    endfun

    "find the palette index for a set of RGB color indices
    fun! s:rgb_color(x, y, z)
        if &t_Co == 88
            return 16 + (a:x * 16) + (a:y * 4) + a:z
        else
            return 16 + (a:x * 36) + (a:y * 6) + a:z
        endif
    endfun

    "find the palette index to approximate a set of RGB color levels
    fun! s:color(r, g, b)
        "get the closest grey
        let l:gx = s:grey_number(a:r)
        let l:gy = s:grey_number(a:g)
        let l:gz = s:grey_number(a:b)

        "get the closest color
        let l:x = s:rgb_number(a:r)
        let l:y = s:rgb_number(a:g)
        let l:z = s:rgb_number(a:b)

        if l:gx == l:gy && l:gy == l:gz
            let l:dgr = s:grey_level(l:gx) - a:r
            let l:dgg = s:grey_level(l:gy) - a:g
            let l:dgb = s:grey_level(l:gz) - a:b
            let l:dgrey = (l:dgr * l:dgr) + (l:dgg * l:dgg) + (l:dgb * l:dgb)
            let l:dr = s:rgb_level(l:gx) - a:r
            let l:dg = s:rgb_level(l:gy) - a:g
            let l:db = s:rgb_level(l:gz) - a:b
            let l:drgb = (l:dr * l:dr) + (l:dg * l:dg) + (l:db * l:db)
            if l:dgrey < l:drgb
                return s:grey_color(l:gx)
            else
                return s:rgb_color(l:x, l:y, l:z)
            endif
        else
            return s:rgb_color(l:x, l:y, l:z)
        endif
    endfun

    "find the palette index to approximate the 'rrggbb' hex string
    fun! s:rgb(rgb)
        let l:r = ("0x" . strpart(a:rgb, 0, 2)) + 0
        let l:g = ("0x" . strpart(a:rgb, 2, 2)) + 0
        let l:b = ("0x" . strpart(a:rgb, 4, 2)) + 0
        return s:color(l:r, l:g, l:b)
    endfun

    "sets the highlighting for the given group
    fun! s:X(group, fg, bg, attr, lcfg, lcbg)
        if s:low_color
            let l:fge = empty(a:lcfg)
            let l:bge = empty(a:lcbg)

            if !l:fge && !l:bge
                exec "hi ".a:group." ctermfg=".a:lcfg." ctermbg=".a:lcbg
            elseif !l:fge && l:bge
                exec "hi ".a:group." ctermfg=".a:lcfg." ctermbg=NONE"
            elseif l:fge && !l:bge
                exec "hi ".a:group." ctermfg=NONE ctermbg=".a:lcbg
            endif
        else
            let l:fgs = substitute(a:fg, '^#', '', '')
            let l:bgs = substitute(a:bg, '^#', '', '')
            let l:fge = empty(l:fgs)
            let l:bge = empty(l:bgs)

            if !l:fge && !l:bge
                exec "hi ".a:group." guifg=#".l:fgs." guibg=#".l:bgs." ctermfg=".s:rgb(l:fgs)." ctermbg=".s:rgb(l:bgs)
            elseif !l:fge && l:bge
                exec "hi ".a:group." guifg=#".l:fgs." guibg=NONE ctermfg=".s:rgb(l:fgs)." ctermbg=NONE"
            elseif l:fge && !l:bge
                exec "hi ".a:group." guifg=NONE guibg=#".l:bgs." ctermfg=NONE ctermbg=".s:rgb(l:bgs)
            endif
        endif

        if a:attr == ""
            exec "hi ".a:group." gui=none cterm=none"
        else
            let noitalic = join(filter(split(a:attr, ","), "v:val !=? 'italic'"), ",")
            if empty(noitalic)
                let noitalic = "none"
            endif
            exec "hi ".a:group." gui=".a:attr." cterm=".noitalic
        endif
    endfun
"}}}

if !exists("g:colorscheme_use_lowcolor_black") || g:colorscheme_use_lowcolor_black
    let s:termBlack = "Black"
else
    let s:termBlack = "Grey"
endif

"SPELL CHECKING UNDERLINE: (blue, yellow, none, none)
hi SpellBad   guisp=#87d7ff gui=undercurl guifg=NONE guibg=NONE ctermfg=NONE ctermbg=NONE term=bold,underline cterm=bold,underline
hi SpellCap   guisp=#ffd787 gui=undercurl guifg=NONE guibg=NONE ctermfg=NONE ctermbg=NONE term=underline cterm=underline
hi SpellRare  guisp=NONE gui=NONE guifg=NONE guibg=NONE ctermfg=NONE ctermbg=NONE term=NONE cterm=NONE
hi SpellLocal guisp=NONE gui=NONE guifg=NONE guibg=NONE ctermfg=NONE ctermbg=NONE term=NONE cterm=NONE

"SYNTAX COLORS:

"format:
"format: ('name','fg    ','bg    ','style      ',s:lowcolor-fg,'lowcolor-bg')
"example:('Line','000000','f0f0f0','italic,bold',s:termBlack  ,'White')

"core style
call s:X("Normal","#eaeaea","#262626","","White",s:termBlack)
hi Normal ctermfg=254 ctermbg=235

call s:X("Cursor","","#262626","standout,underline,bold",s:termBlack,"White")
call s:X("CursorColumn","","#303030","","",s:termBlack)
hi CursorColumn ctermbg=236
call s:X("CursorLine","","#303030","","",s:termBlack)
hi CursorLine ctermbg=236
call s:X("CursorLineNr","#87d7ff","#303030","bold","Blue",s:termBlack)
hi CursorLineNr ctermbg=236
call s:X("LineNr","#4e4e4e","","bold","White",s:termBlack)
hi LineNr ctermfg=239

call s:X("Visual","","#262626","standout","",s:termBlack)
call s:X("MatchParen","","#303030","bold,underline","","")

"whitespace
call s:X("TabLine","","#000000","","",s:termBlack)
call s:X("TabLineFill","","#000000","","",s:termBlack)
call s:X("TabLineSel","#000000","#d0d0d0","",s:termBlack,"White")

"menu call
call s:X("Pmenu","#87d7ff","#303030","","Grey","Blue")
call s:X("PmenuSel","#87d7ff","#4e4e4e","bold","White","Black")

"search
call s:X("Search","#87d7ff","#262626","standout","Blue",s:termBlack)
call s:X("IncSearch","#87d7ff","#262626","standout,bold","Blue",s:termBlack)

"status line
call s:X("StatusLine","#000000","#d75f5f","bold",s:termBlack,"Red")
call s:X("StatusLineNC","#ffffff","#626262","","White","Grey")
call s:X("VertSplit","#626262","#626262","",s:termBlack,s:termBlack)
call s:X("WildMenu","#808080","#303030","","White",s:termBlack)

"folding
call s:X("Folded","#87d7ff","#4e4e4e","bold","Blue",s:termBlack)
call s:X("FoldColumn","#87d7ff","","bold","Blue","")
call s:X("SignColumn","#ffd787","","bold","Red","")
hi! link ColorColumn SignColumn

"syntax style
call s:X("Title","#d75f5f","","underline","Red","")
call s:X("Comment","#6c6c6c","","italic","Grey","")
call s:X("Constant","#87d7ff","","bold","Blue","")
call s:X("Special","#ffd787","","bold","Yellow","")
call s:X("Delimiter","#ffffff","","","White","")
call s:X("String","#ffffff","","bold","White","")
call s:X("StringDelimiter","#d0d0d0","","","White","")
call s:X("Identifier","#87d7ff","","bold","Blue","")
call s:X("Type","#d75f5f","","bold","Red","")
call s:X("Function","#87d7ff","","","Blue","")
call s:X("Label","#d75f5f","","","Red","")
call s:X("Statement","#ffd787","","","Yellow","")
call s:X("PreProc","#ffd787","","","Yellow","")
call s:X("Keyword","#ffd787","","bold","Yellow","")
call s:X("Operator","#d75f5f","","","Red","")
call s:X("NonText","#87d7ff","","","Blue","")
call s:X("SpecialKey","#626262","","",s:termBlack,"")
call s:X("Directory","#87d7ff","","","Blue","")
call s:X("Question","#87d7ff","","","Blue","")
call s:X("Todo","#d75f5f","","bold","Red","")

"errors
call s:X("Error","#d75f5f","#000000","standout","Red",s:termBlack)
hi! link WarningMsg Error
hi! link ErrorMsg Error
hi! link MoreMsg Special
hi! link Structure PreProc
hi! link Number Type

"vimdiff
call s:X("DiffAdd","#000000","#ffd787","italic",s:termBlack,"Yellow")
call s:X("DiffDelete","#000000","#d75f5f","italic",s:termBlack,"Red")
call s:X("DiffChange","#000000","#87d7ff","italic",s:termBlack,"Blue")
call s:X("DiffText","#000000","#c6c6c6","italic",s:termBlack,"White")

"version control
call s:X("SignifySignAdd","#ffd787","","bold","","Yellow")
call s:X("SignifySignDelete","#d75f5f","","bold","","Red")
call s:X("SignifySignChange","#ffd787","","bold","","Yellow")
hi! link SignifyLineAdd DiffAdd
hi! link SignifyLineDelete DiffDelete
hi! link SignifyLineChange DiffChange
hi! link gitconfigAssignment Label
hi! link ExtraditeLogName Type

"html
call s:X("htmlTitle","#ffffff","","underline,bold","White","")
call s:X("htmlH1","#d75f5f","","underline,bold","Red","")
call s:X("htmlH2","#ffd787","","underline,bold","Yellow","")
call s:X("htmlH3","#87d7ff","","underline,bold","Blue","")
call s:X("htmlH4","#d75f5f","","underline","Red","")
call s:X("htmlH5","#ffd787","","underline","Yellow","")
call s:X("htmlH6","#87d7ff","","underline","Blue","")
call s:X("htmlSpecialChar","","","italic","","")
call s:X("htmlArg","#d75f5f","","bold","Red","")
call s:X("htmlTagName","#ffd787","","bold","Yellow","")
call s:X("htmlTag","#87d7ff","","bold","Blue","")
call s:X("commentURL","#ffd787","","italic,underline","Yellow","")
call s:X("htmlLink","#ffd787","","underline","Yellow","")

"php
hi! link phpFunctions Function
hi! link phpSuperglobal Identifier
hi! link phpQuoteSingle StringDelimiter
hi! link phpQuoteDouble StringDelimiter
hi! link phpBoolean Constant
hi! link phpNull Constant
hi! link phpArrayPair Operator
hi! link StorageClass Type

"javaScript
hi! link javaScriptParens Delimiter
hi! link javaScriptBraces Delimiter
hi! link javaScriptValue Constant
hi! link javascriptHtmlEvents javaScriptSpecial
hi! link javascriptDomElemAttrs javaScriptSpecial
hi! link javascriptDomElemFuncs javaScriptFunction

"coffeeScript
hi! link coffeeRegExp javaScriptRegexpString

"c
call s:X("cBraces","#ffd787","","","Yellow","")
hi! link cBlock cBraces
hi! link cOperator cBraces
hi! link cCharacter String
hi! link cBlock String
hi! link cNumbersCom Number

"dosini
hi! link dosiniLabel Function

"objective-c/cocoa
hi! link objcClass Type
hi! link cocoaClass objcClass
hi! link objcSubclass objcClass
hi! link objcSuperclass objcClass
hi! link objcDirective Type
hi! link objcStatement Constant
hi! link cocoaFunction Function
hi! link objcMethodName Identifier
hi! link objcMethodArg Normal
hi! link objcMessageName Identifier

"ruby
hi! link rubySharpBang Comment
hi! link rubyConstant Type
hi! link rubyFunction Function
hi! link rubyGlobalVariable rubyInstanceVariable
hi! link rubyModule rubyClass
hi! link rubyString String
hi! link rubyStringDelimiter StringDelimiter
hi! link rubyInterpolationDelimiter Identifier
hi! link rubyClass Type
hi! link rubyIdentifier Identifier
hi! link rubyPredefinedIdentifier PreProc
call s:X("rubyGlobalVariable","","","bold","","")
"call s:X("rubySymbol","","","","","")
"call s:X("rubyControl","","","","","")
"call s:X("rubyRegexpDelimiter","","","","","")
"call s:X("rubyRegexp","","","","","")
"call s:X("rubyRegexpSpecial","","","","","")

"lua
hi! link luaOperator Conditional

"vim config/vimscript
call s:X("IndentGuidesOdd","","#7c7c7c","","","Grey")
call s:X("IndentGuidesEven","","#1c1c1c","","",s:termBlack)
if !exists("g:indent_guides_auto_colors")
    let g:indent_guides_auto_colors=0
endif
call s:X("vimOperParen","#87d7ff","","","Blue","")

"systemd unit files
hi! link sdKey Identifier
hi! link sdFilename String
hi! link sdFileList sdFilename
hi! link sdExecFile sdFilename
hi! link sdExecArgs sdExecFile
hi! link sdDocURI sdFilename
hi! link sdValue PreProc
hi! link sdServiceBlock sdValue
hi! link sdSocketBlock Operator
hi! link sdUnitBlock Comment
hi! link sdBindIPv6 sdValue
hi! link sdIPTOS Label
hi! link sdTCPCongest Label
hi! link sdIOSchedClass sdValue
hi! link sdIOSchedPrio sdValue
hi! link sdCPUSchedPol sdValue
hi! link sdBool sdValue
hi! link sdDatasize sdValue
hi! link sdSymbol sdValue
hi! link sdOtherSignal sdValue
hi! link sdDevAllow Keyword
hi! link sdCapability sdDevAllow

"notes
call s:X("notesRule","","","bold","","")
call s:X("WarningMsg","#ffd787","#2c2c2c","standout,bold","Yellow",s:termBlack)
call s:X("notesTitle","#d75f5f","","underline,bold","Red","")
call s:X("notesName","#ffd787","","underline,bold","Yellow","")
call s:X("notesShortHeading","#ffd787","#262626","standout,underline,bold","Yellow","")
call s:X("Underlined","#87d7ff","","underline,bold","Blue","")
call s:X("notesInProgress","#87d7ff","#262626","standout,underline,bold","Blue","")
call s:X("notesRealURL","#d75f5f","","underline,bold","Red","")
hi! link notesTextURL notesRealURL
hi! link notesSubtleURL notesRealURL
hi! link notesListBullet FoldColumn
hi! link notesListNumber notesListBullet
hi! link notesVimCmd Function
hi! link notesSingleQuoted String
hi! link notesBlockQuote Pmenu
hi! link notesModeLine Comment
hi! link notesCodeStart Delimiter
hi! link notesCodeEnd notesCodeStart
hi! link notesLastEdited Statement
hi! link notesAtxHeading Comment

"email
hi! link mailHeaderKey Identifier

"quicktask
hi! link quicktaskDatestamp Identifier
hi! link quicktaskTimestamp Identifier
hi! link quicktaskSection Todo
call s:X("quicktaskTimeNote","#ffd787","","bold","Yellow","")
call s:X("quicktaskTask","#ffffff","","bold","White","")

"taglist
hi! link TagListFileName Directory

"syntastic
call s:X("SyntasticError","#d75f5f","","standout,bold","Red","")
call s:X("SyntasticWarning","#ffd787","","standout,bold","Yellow","")
hi! link SyntasticErrorLine SyntasticError
hi! link SyntasticWarningLine SyntasticWarning
hi! link SyntasticErrorSign Error
hi! link SyntasticWarningSign Statement
hi! link qfSeparator Delimiter
hi! link qfLineNr SyntasticError

"COLOR DEFINITIONS:
"delete functions {{{
    delf s:X
    delf s:rgb
    delf s:color
    delf s:rgb_color
    delf s:rgb_level
    delf s:rgb_number
    delf s:grey_color
    delf s:grey_level
    delf s:grey_number
"}}}

"colour presets (used with lightline) {{{
    let s:base3 = '#eaeaea'
    let s:base23 = '#d0d0d0'
    let s:base2 = '#c6c6c6'
    let s:base1 = '#b2b2b2'
    let s:base0 = '#949494'
    let s:base00 = '#767676'
    let s:base01 = '#606060'
    let s:base02 = '#4e4e4e'
    let s:base023 = '#303030'
    let s:darkblue = '#005fff'
    let s:red = '#d75f5f'
    let s:orange = '#ffaf00'
    let s:yellow = '#ffd787'
    let s:green = '#5faf00'
    let s:cyan = '#d7ffff'
    let s:blue = '#87d7ff'
    let s:p = {'normal': {}, 'inactive': {}, 'insert': {}, 'replace': {}, 'visual': {}, 'tabline': {}}
    let s:p.normal.left = [ [ s:base023, s:blue ], [ s:base3, s:base01 ] ]
    let s:p.normal.right = [ [ s:base02, s:base1 ], [ s:base2, s:base01 ] ]
    let s:p.inactive.right = [ [ s:base02, s:base0 ], [ s:base1, s:base01 ] ]
    let s:p.inactive.left =  [ [ s:base02, s:base0 ], [ s:base00, s:darkblue ] ]
    let s:p.insert.left = [ [ s:base023, s:red ], [ s:base3, s:base01 ] ]
    let s:p.replace.left = [ [ s:base023, s:orange ], [ s:base3, s:base01 ] ]
    let s:p.visual.left = [ [ s:base023, s:yellow ], [ s:base3, s:base01 ] ]
    let s:p.normal.middle = [ [ s:base1, s:base02 ] ]
    let s:p.inactive.abmiddle = [ [ s:base0, s:base02 ] ]
    let s:p.tabline.left = [ [ s:base2, s:base01 ] ]
    let s:p.tabline.tabsel = [ [ s:base2, s:base023 ] ]
    let s:p.tabline.middle = [ [ s:base01, s:base1 ] ]
    let s:p.tabline.right = copy(s:p.normal.right)
    let s:p.normal.error = [ [ s:red, s:base023 ] ]
    let s:p.normal.warning = [ [ s:yellow, s:base02 ] ]
    let g:lightline#colorscheme#darkcloud#palette = lightline#colorscheme#fill(s:p)
"}}}