Group repeated messages based on notification ids

[tlmp59]

One feature that i really enjoy using in fidget-nvim is that it automatically group and count number of instances of the same messages. Is there a way that i can replicate this in notifier?

[drowning-cat]

---@module 'snacks'

local notifs = {}

---@param msg string
---@param title? string
---@param level? string|number
local key = function(msg, title, level)
  return string.format('msg:%s,title:%s,level:%s', msg, title or '', level or '')
end

---@param notif snacks.notifier.Notif
local use_count = function(notif)
  local get_count = function()
    return notifs[key(notif.msg, notif.title, notif.level)] or 0
  end
  ---@param num integer
  local set_count = function(num)
    notifs[key(notif.msg, notif.title, notif.level)] = num
  end
  return get_count, set_count
end

return {
  'folke/snacks.nvim',
  config = function(_, spec_opts)
    require('snacks').setup(spec_opts)
    --
    local notify = Snacks.notifier.notify
    Snacks.notifier.notify = function(msg, level, opts)
      opts = opts or {}
      opts = vim.tbl_deep_extend('keep', opts, {
        id = key(msg, opts.title, opts.level),
      })
      return notify(msg, level, opts)
    end
  end,
  ---@type snacks.Config
  opts = {
    notifier = {
      ---@param buf integer
      ---@param notif snacks.notifier.Notif
      ---@param ctx snacks.notifier.ctx
      style = function(buf, notif, ctx)
        local get_count, set_count = use_count(notif)
        if notif.shown then
          set_count(get_count() + 1)
        else
          set_count(1)
        end
        -- Compat derived style
        ctx.opts.title = {}
        if get_count() > 1 then
          table.insert(ctx.opts.title, { string.format('(%sx)', get_count()) })
        end
        --
        local title = vim.trim(notif.icon .. ' ' .. (notif.title or ''))
        if title ~= '' then
          table.insert(ctx.opts.title, { ' ' .. title .. ' ', ctx.hl.title })
          ctx.opts.title_pos = 'center'
        end
        vim.api.nvim_buf_set_lines(buf, 0, -1, false, vim.split(notif.msg, '\n'))
      end,
    },
  },
}

[acid-bong]

Looks and works great, but it doesn't work well with the LSP progress examples by Folke: https://asciinema.org/a/1sdlMeu1Dr3NXtH7xnBd3AWXi

But, as I was typing, I realized that the solution is to specify style = "compact" in the LSP progress snippets.

[acid-bong]

Ah, found a bad thing: it groups notifs of different levels, which is no good

[acid-bong]

And the fix for that is adding level to the args:

---@param msg string
---@param title? string
---@param level? number|snacks.notifier.level
local key = function(msg, title, level)
  return string.format("msg:%s,title:%s,level:%s", msg, title or "", level or "")
end

and then level or notif.level elsewhere

[drowning-cat]

Seems reasonable. I've updated the code with your fix.

Note

I don't use notifier myself because it's a bit too fancy for me.

[tlmp59]

This works great thank you so much