vim9script

export def Init(layer_home: string = v:none)
    if !tui#core#cached#Has("tui.layer.home")
        var tui_layer_home = layer_home
        if empty(layer_home) || empty(split(layer_home))
            tui_layer_home = expand(tui#core#cached.Get("tui.home") .. "/layers")
        endif
        tui#core#cached#Set('tui.layer.home', tui_layer_home)

        command! -nargs=1 -bar TuiLayer call tui#core#layer#Load(<q-args>)
        Load0(tui_layer_home)
    endif
enddef

export def Load(layer_id: string)
    const tui_layer_home = tui#core#cached#Get("tui.layer.home")
    const layer_path = expand(tui_layer_home .. "/" .. substitute(layer_id, '\.', '/', 'g'))
    Load0(layer_path)
enddef

def Load0(layer_path: string)
    if filereadable(layer_path)
        execute('source ' .. layer_path)
    elseif filereadable(layer_path .. '.vim')
        execute('source ' .. layer_path .. '.vim')
    elseif isdirectory(layer_path)
        if filereadable(expand(layer_path .. '/init.vim'))
            execute('source ' .. expand(layer_path .. '/init.vim'))
        else
            for sub_file in split(glob(layer_path .. "/*.vim"), '\n')
                if filereadable(sub_file)
                    execute("source " .. sub_file)
                endif
            endfor
        endif
    endif
enddef