1 files changed, 111 insertions, 0 deletions
diff --git a/lua/chadterm/terminal.lua b/lua/chadterm/terminal.lua
new file mode 100644
index 0000000..66ee2de
--- /dev/null
+++ b/lua/chadterm/terminal.lua
@@ -0,0 +1,111 @@
+local util = require('chadterm.termutil')
+local a = vim.api
+local nvterm = {}
+local terminals = {}
+
+
+local function get_last(list)
+  if list then return not vim.tbl_isempty(list) and list[#list] or nil end
+  return terminals[#terminals] or nil
+end
+
+local function get_type(type)
+  return vim.tbl_filter(function(t)
+    return t.type == type
+  end, terminals.list)
+end
+
+local function get_still_open()
+  return vim.tbl_filter(function(t)
+    return t.open == true
+  end, terminals.list)
+end
+
+local function get_last_still_open()
+  return get_last(get_still_open())
+end
+
+local function get_type_last(type)
+  return get_last(get_type(type))
+end
+
+local create_term_window = function (type)
+  util.execute_type_cmd(type, terminals)
+  vim.wo.relativenumber = false
+  vim.wo.number = false
+  return a.nvim_get_current_win()
+end
+
+local create_term = function (type)
+  local win = create_term_window(type)
+  local buf = a.nvim_create_buf(false, true)
+  a.nvim_buf_set_option(buf, 'filetype', 'terminal')
+  a.nvim_buf_set_option(buf, 'buflisted', false)
+  a.nvim_win_set_buf(win, buf)
+  local job_id = vim.fn.termopen(vim.o.shell)
+  local term = { win = win, buf = buf, open = true, type=type, job_id=job_id}
+  table.insert(terminals.list, term)
+  vim.cmd('startinsert')
+  return term
+end
+
+local ensure_and_send = function(cmd, type)
+  terminals = util.verify_terminals(terminals)
+  local term = type and get_type_last(type) or get_last_still_open() or nvterm.new("vertical")
+  if not term then term = nvterm.new("horizontal") end
+  a.nvim_chan_send(term.job_id, cmd..'\n')
+end
+
+local call_and_restore = function (fn, opts)
+  local current_win = a.nvim_get_current_win()
+  local mode = a.nvim_get_mode().mode == 'i' and 'startinsert' or 'stopinsert'
+  fn(unpack(opts))
+  a.nvim_set_current_win(current_win)
+  vim.cmd(mode)
+end
+
+nvterm.send = function(cmd, type)
+  if not cmd then return end
+  call_and_restore(ensure_and_send, {cmd, type})
+end
+
+nvterm.hide_term = function (term)
+  term.open = false
+  a.nvim_win_close(term.win, false)
+end
+
+nvterm.show_term = function (term)
+  term.open = true
+  term.win = create_term_window(term.type)
+  a.nvim_win_set_buf(term.win, term.buf)
+  vim.cmd('startinsert')
+end
+
+nvterm.hide = function (type)
+  local term = type and get_type_last(type) or get_last()
+  nvterm.hide_term(term)
+end
+
+nvterm.show = function(type)
+  local term = type and get_type_last(type) or terminals.last
+  nvterm.show_term(term)
+end
+
+nvterm.new = function (type)
+  local term = create_term(type)
+  return term
+end
+
+nvterm.new_or_toggle = function (type)
+  terminals = util.verify_terminals(terminals)
+  local term = get_type_last(type)
+  if not term then term = nvterm.new(type)
+  elseif term.open then nvterm.hide_term(term)
+  else nvterm.show_term(term) end
+end
+
+nvterm.init = function(term_config)
+  terminals = term_config
+end
+
+return nvterm