fzf_lua.lua

--- @class Fzflua: GoDocPicker
local M = {}

--- @param adapter GoDocAdapter
--- @param config GoDocConfig
--- @param callback fun(choice: GoDocCallbackData)
function M.show(adapter, config, callback)
  local core = require("fzf-lua.core")
  local builtin = require("fzf-lua.previewer.builtin")

  local documentation_previewer = builtin.base:extend()

  function documentation_previewer:new(o, opts, fzf_win)
    documentation_previewer.super.new(self, o, opts, fzf_win)
    setmetatable(self, documentation_previewer)
    return self
  end

  ---@param entry_str string
  function documentation_previewer:populate_preview_buf(entry_str)
    local tmpbuf = self:get_tmp_buffer()
    vim.api.nvim_set_option_value("filetype", "godoc", { buf = tmpbuf })
    vim.api.nvim_buf_set_lines(
      tmpbuf,
      0,
      -1,
      false,
      self.opts.adapter.get_content(entry_str)
    )
    self:set_preview_buf(tmpbuf)
  end

  local opts = {
    prompt = "Select item: ",
    fn_transform = function() end,
    debug = false,
    actions = {
      ["default"] = function(selected, _)
        callback({
          type = "show_documentation",
          choice = table.concat(selected, ""),
        })
      end,
      -- TODO: fzf lua doesn't accept 'gd' as a keymap
      ["ctrl-s"] = function(selected, _)
        callback({
          type = "goto_definition",
          choice = table.concat(selected, ""),
        })
      end,
    },
    adapter = adapter, -- Allow previewer to access adapter
    previewer = documentation_previewer,
  }

  if config.picker.fzf_lua then
    opts = vim.tbl_deep_extend("force", opts, config.picker.fzf_lua)
  end

  core.fzf_exec(adapter.get_items(), opts)
end

--- @return nil
M.goto_definition = function()
  require("fzf-lua").lsp_definitions()
end

return M