Greatly improve terminal features! Persistent terminals (#275)

* remove toggleTerm plugin

* Adding term binds, term hider & Telescope terms to bring them back

* Adding many term features!

lua/telescope/_extensions/terms.lua

@@ -0,0 +1,144 @@
+-- This file can be loaded as a telescope extension
+local M = {}
+
+-- Custom theme picker
+-- Most of the code is copied from telescope buffer builtin
+-- Src: https://github.com/nvim-telescope/telescope.nvim/blob/master/lua/telescope/builtin/internal.lua
+M.term_picker = function(opts)
+   local pickers, finders, previewers, make_entry, actions, action_state, utils, conf
+   if pcall(require, "telescope") then
+      pickers = require "telescope.pickers"
+      finders = require "telescope.finders"
+      previewers = require "telescope.previewers"
+      
+      make_entry = require "telescope.make_entry"
+      actions = require "telescope.actions"
+      action_state = require "telescope.actions.state"
+      utils = require "telescope.utils"
+      conf = require("telescope.config").values
+   else
+      error "Cannot find telescope!"
+   end
+   
+   local filter = vim.tbl_filter
+   
+   local local_utils = require "utils"
+
+   -- buffer number and name
+   local bufnr = vim.api.nvim_get_current_buf()
+   local bufname = vim.api.nvim_buf_get_name(bufnr)
+   
+   local bufnrs = filter(function(b)
+      local present_type, type = pcall(function()
+         return vim.api.nvim_buf_get_var(b, "term_type")
+      end)
+         
+      if not present_type then
+         -- let's only terms that we created
+         return false
+      end
+       
+      
+      -- if 1 ~= vim.fn.buflisted(b) then
+      --    return false
+      -- end
+      -- only hide unloaded buffers if opts.show_all_buffers is false, keep them listed if true or nil
+      if opts.show_all_buffers == false and not vim.api.nvim_buf_is_loaded(b) then
+         return false
+      end
+      if opts.ignore_current_buffer and b == vim.api.nvim_get_current_buf() then
+         return false
+      end
+      return true
+   end, vim.api.nvim_list_bufs())
+   if not next(bufnrs) then
+      return
+   end
+   if opts.sort_mru then
+      table.sort(bufnrs, function(a, b)
+         return vim.fn.getbufinfo(a)[1].lastused > vim.fn.getbufinfo(b)[1].lastused
+      end)
+   end
+ 
+   local buffers = {}
+   local default_selection_idx = 1
+   for _, bufnr in ipairs(bufnrs) do
+      local flag = bufnr == vim.fn.bufnr "" and "%" or (bufnr == vim.fn.bufnr "#" and "#" or " ")
+ 
+      if opts.sort_lastused and not opts.ignore_current_buffer and flag == "#" then
+         default_selection_idx = 2
+      end
+ 
+      local element = {
+         bufnr = bufnr,
+         flag = flag,
+         info = vim.fn.getbufinfo(bufnr)[1],
+      }
+ 
+      if opts.sort_lastused and (flag == "#" or flag == "%") then
+         local idx = ((buffers[1] ~= nil and buffers[1].flag == "%") and 2 or 1)
+         table.insert(buffers, idx, element)
+      else
+         table.insert(buffers, element)
+      end
+   end
+ 
+   if not opts.bufnr_width then
+      local max_bufnr = math.max(unpack(bufnrs))
+      opts.bufnr_width = #tostring(max_bufnr)
+   end
+ 
+   pickers.new(opts, {
+      prompt_title = "Terminal buffers",
+      finder = finders.new_table {
+         results = buffers,
+         entry_maker = opts.entry_maker or make_entry.gen_from_buffer(opts),
+      },
+      previewer = conf.grep_previewer(opts),
+      sorter = conf.generic_sorter(opts),
+      default_selection_index = default_selection_idx,
+      attach_mappings = function(prompt_bufnr)
+         actions.select_default:replace(function()
+            local entry = action_state.get_selected_entry()
+            actions.close(prompt_bufnr)
+
+            local buf = entry.bufnr
+               
+            local chad_term, type = pcall(function()
+                  return vim.api.nvim_buf_get_var(buf, "term_type")
+               end)
+         
+            -- TODO buffer checks/error detection (make sure we do get a buf)
+
+            if chad_term then
+               if type == "wind" then
+                  -- swtich to term buff & show in bufferline
+                  vim.cmd(string.format('b %d | setlocal bl', buf))
+                  -- vim.cmd('startinsert') TODO fix this
+               elseif type == "vert" then
+                  vim.cmd(string.format('vsp #%d', buf))
+                  -- vim.cmd('startinsert') TODO fix this
+               elseif type == "hori" then
+                  -- TODO change 15 to a chad config var number
+                  vim.cmd(string.format('15 sp #%d ', buf))
+                  -- vim.cmd('startinsert') TODO fix this
+               end
+            end
+         end)
+
+         return true
+      end,
+   }):find()
+end
+
+-- register term picker as terms to telescope
+local present, telescope = pcall(require, "telescope")
+if present then
+   return telescope.register_extension {
+      exports = {
+         terms = M.term_picker,
+      },
+   }
+else
+   error "Cannot find telescope!"
+end