local cmp = require "cmp"
local lspzero_cmp_act = require('lsp-zero').cmp_action()

local function border(hl_name)
  return {
    { "╭", hl_name },
    { "─", hl_name },
    { "╮", hl_name },
    { "│", hl_name },
    { "╯", hl_name },
    { "─", hl_name },
    { "╰", hl_name },
    { "│", hl_name },
  }
end

local options = {
  completion = {
    completeopt = "menu,menuone",
  },

  window = {
    completion = {
      border = border "CmpBorder",
      winhighlight = "Normal:CmpPmenu,CursorLine:CmpSel,CursorLine:PmenuSel",
      scrollbar = false,
    },
    documentation = {
      border = border "CmpDocBorder",
      winhighlight = "Normal:CmpDoc",
    },
  },

  snippet = {
    expand = function(args)
      require("luasnip").lsp_expand(args.body)
    end,
  },

  formatting = {
    fields = { "abbr", "kind", "menu" },

    format = function(_, item)
      local icons = {
        Text = " ",
        Method = " ",
        Function = " ",
        Constructor = " ",
        Field = " ",
        Variable = " ",
        Class = " ",
        Interface = " ",
        Module = " ",
        Property = " ",
        Unit = " ",
        Value = " ",
        Enum = " ",
        Keyword = " ",
        Snippet = " ",
        Color = " ",
        File = " ",
        Reference = " ",
        Folder = " ",
        EnumMember = " ",
        Constant = " ",
        Struct = " ",
        Event = " ",
        Operator = " ",
        TypeParameter = " ",
      }

      local icon = icons[item.kind] or ""
      item.kind = string.format(" %s  %s", icon, item.kind)

      return item
    end,
  },

  mapping = cmp.mapping.preset.insert({
    ['<C-Space>'] = cmp.mapping.complete(),
    ['<C-u>'] = cmp.mapping.scroll_docs(-4),
    ['<C-d>'] = cmp.mapping.scroll_docs(4),
    ['<C-f>'] = lspzero_cmp_act.luasnip_jump_forward(),
    ['<C-b>'] = lspzero_cmp_act.luasnip_jump_backward(),
  }),

  sources = {
    { name = "nvim_lsp" },
    { name = "luasnip" },
    { name = "buffer" },
    { name = "nvim_lua" },
    { name = "path" },
  },
}

return options