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local cmp = require "cmp"
local lspkind = require "lspkind"
local luasnip = require "luasnip"
local cmp_autopairs = require "nvim-autopairs.completion.cmp"
local compare = require "cmp.config.compare"

cmp.event:on("confirm_done", cmp_autopairs.on_confirm_done { map_char = { tex = "" } })

cmp.setup {
  window = {
    completion = {
      border = "rounded",
      -- winhighlight = 'Normal:Pmenu,FloatBorder:Pmenu,CursorLine:PmenuSel,Search:None',
      -- winblend = vim.o.pumblend,
      -- scrolloff = 0,
      -- col_offset = 0,
      -- side_padding = 1,
      -- scrollbar = true,
    },
    documentation = {
      -- max_height = math.floor(WIDE_HEIGHT * (WIDE_HEIGHT / vim.o.lines)),
      -- max_width = math.floor((WIDE_HEIGHT * 2) * (vim.o.columns / (WIDE_HEIGHT * 2 * 16 / 9))),
      border = "rounded",
      -- winhighlight = 'FloatBorder:NormalFloat',
      -- winblend = vim.o.pumblend,
    },
  },
  mapping = {
    ["<C-d>"] = cmp.mapping.scroll_docs(-4),
    ["<C-f>"] = cmp.mapping.scroll_docs(4),
    ["<C-e>"] = cmp.mapping(function(fallback)
      if cmp.visible() then
        cmp.close()
      elseif luasnip.expand_or_jumpable() then
        luasnip.expand_or_jump()
      else
        fallback()
      end
    end, { "i", "s" }),
    ["<C-n>"] = cmp.mapping(function(fallback)
      if cmp.visible() then
        cmp.select_next_item()
      elseif luasnip.choice_active() then
        luasnip.change_choice(1)
      else
        fallback()
      end
    end, { "i", "s" }),
    ["<C-p>"] = cmp.mapping.select_prev_item(),
    ["<C-l>"] = cmp.mapping.select_next_item(),
    ["<C-y>"] = cmp.mapping.confirm {
      behavior = cmp.ConfirmBehavior.Insert,
      select = true,
    },
    ["<c-space>"] = cmp.mapping.complete(),
  },
  sources = {
    { name = "dictionary" },
    { name = "nvim_lua" },
    { name = "nvim_lsp" },
    { name = "path" },
    { name = "luasnip" },
    { name = "copilot" },
    {
      name = "buffer",
      keyword_length = 4,
      option = {
        get_bufnrs = function()
          local bufs = {}
          for _, win in ipairs(vim.api.nvim_list_wins()) do
            local bufnr = vim.api.nvim_win_get_buf(win)
            if vim.api.nvim_buf_get_option(bufnr, "buftype") ~= "terminal" then
              bufs[bufnr] = true
            end
          end
          return vim.tbl_keys(bufs)
        end,
      },
    },
  },

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

  formatting = {
    format = function (entry, vim_item)
      lspkind.cmp_format {
        with_text = true,
        menu = {
          buffer = "[buf]",
          nvim_lsp = "[ ]",
          nvim_lua = "[api]",
          path = "[path]",
          luasnip = "[snip]",
          copilot = "[ﮧ ]",
          ["vim-dadbod-completion"] = "[DB]",
        },
      }
      local KIND_ICONS = {
        Tailwind = '󰹞󰹞󰹞󰹞󰹞󰹞󰹞󰹞',
        Color = ' ',
        -- Class = 7,
        -- Constant = '󰚞',
        -- Constructor = 4,
        -- Enum = 13,
        -- EnumMember = 20,
        -- Event = 23,
        -- Field = 5,
        -- File = 17,
        -- Folder = 19,
        -- Function = 3,
        -- Interface = 8,
        -- Keyword = 14,
        -- Method = 2,
        -- Module = 9,
        -- Operator = 24,
        -- Property = 10,
        -- Reference = 18,
        Snippet = " ",
        -- Struct = 22,
        -- Text = "",
        -- TypeParameter = 25,
        -- Unit = 11,
        -- Value = 12,
        -- Variable = 6
      }
      if vim_item.kind == 'Color' and entry.completion_item.documentation then
        local _, _, r, g, b =
        ---@diagnostic disable-next-line: param-type-mismatch
            string.find(entry.completion_item.documentation, '^rgb%((%d+), (%d+), (%d+)')

        if r and g and b then
          local color = string.format('%02x', r) .. string.format('%02x', g) .. string.format('%02x', b)
          local group = 'Tw_' .. color

          if vim.api.nvim_call_function('hlID', { group }) < 1 then
            vim.api.nvim_command('highlight' .. ' ' .. group .. ' ' .. 'guifg=#' .. color)
          end

          vim_item.kind = KIND_ICONS.Tailwind
          vim_item.kind_hl_group = group

          return vim_item
        end
      end

      vim_item.kind = KIND_ICONS[vim_item.kind] or vim_item.kind
      return vim_item
    end
  },

  sorting = {
    priority_weight = 2,
    comparators = {
      compare.kind,
      compare.sort_text,
    },
  },

  experimental = {
    native_menu = false,

    ghost_text = false,
  },
}

vim.api.nvim_set_hl(0, "CmpItemKindCopilot", { fg = "#6CC644" })

-- Set configuration for specific filetype.
cmp.setup.filetype("gitcommit", {
  sources = cmp.config.sources({
    { name = "cmp_git" }, -- You can specify the `cmp_git` source if you were installed it.
  }, {
    { name = "buffer" },
  }),
})

-- Use buffer source for `/` (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline("/", {
  mapping = cmp.mapping.preset.cmdline(),
  sources = {
    { name = "buffer" },
  },
})

-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(":", {
  mapping = cmp.mapping.preset.cmdline(),
  sources = cmp.config.sources({
    { name = "path" },
  }, {
    { name = "cmdline" },
  }),
})

cmp.setup.filetype({ "sql", "mysql", "plsql" }, {
  sources = cmp.config.sources({
    { name = "vim-dadbod-completion" },
  }, {
    { name = "buffer" },
  }),
})