local command = vim.api.nvim_create_user_command

--

local M = {}

function M.lua_add()
  vim.keymap.set('n', '<Right>', function()
    vim.fn['utils#async_fetch_and_refresh_git_info']()
    vim.cmd([[DiffviewOpen]])
  end, {})
  vim.keymap.set('n', '<Down>', "<Cmd>DiffviewFileHistory<CR>", {})

  -- NOTE: keymappingが効かない時用。設定し直して開き直す。
  --       (何故かMacだけkeymappingが効かない時がある)
  command('ResettingDiffview', function()
    vim.cmd([[DiffviewClose]])
    M.lua_source()
    vim.cmd([[DiffviewOpen]])
  end, {})
end

function M.lua_source()
  -- NOTE: luaで書くと上手くいかないのでvimscriptで
  vim.cmd([[
    " 表示スタイル(tree/list)をtoggle & git情報を更新
    function! s:aucmds_on_diffviewopen() abort
      lua require("diffview.config").actions.listing_style()
      call utils#refresh_git_infomations()
    endfunction

    augroup MyDiffviewAuCmds
      au!
      au User DiffviewViewOpened call s:aucmds_on_diffviewopen()
    augroup END
  ]])

  require('diffview').setup({
    enhanced_diff_hl = true,
    file_panel = {
      win_config = {
        -- diffviewのwindowの設定
        type = "split",
        position = "right",
        width = 40,
      },
    },
    keymaps = {
      file_panel = {
        -- TODO: 何故かMacだと効いたり効かなかったりする {{{
        -- commit
        { "n", "<Down>",
          function()
            vim.cmd([[Gin commit]])
          end,
          { desc = "execute :Gin commit" }
        },
        -- confirmしてpushする
        { "n", "<Up>",
          function()
            require("plugins.git.gin").pcall_git_push_confirm()
          end,
          { desc = "confirm -> :Gin push" }
        },
        -- }}}
        -- confirmして変更を削除する
        { "n", "X",
          function()
            local message = "Delete this changes?"
            if not vim.fn["utils#confirm"](message) then
              return
            end
            -- restore
            require("diffview.config").actions.restore_entry()
            -- git情報を更新
            vim.fn["utils#refresh_git_infomations"]()
          end,
          { desc = "confirm -> restore" }
        },
      }
    }
  })
end

return M