Add sessions module

Author: hkupty

Diff for: lua/acid/sessions.lua

@@ -0,0 +1,51 @@
+-- luacheck: globals vim
+local connections = require("acid.connections")
+local ops = require("acid.ops")
+local core = require("acid.core")
+
+local pwd_to_key = function(pwd)
+  if not utils.ends_with(pwd, "/") then
+    return pwd .. "/"
+  end
+  return pwd
+end
+
+local sessions = {}
+
+sessions.store = {}
+
+
+sessions.register_session = function(connection_ix, session)
+  if sessions.store[connection_ix] == nil then
+    sessions.store[connection_ix] = {
+      list = {},
+      selected = nil
+    }
+  end
+  table.insert(sessions.store[connection_ix].list, session)
+  sessions.store[connection_ix].selected = session
+end
+
+sessions.filter = function(data, connection_ix)
+  connection_ix = connection_ix or connections.peek()
+  local session = sessions.store[connection_ix]
+  if session ~= nil then
+    data.session = session.selected
+  end
+
+  return data
+end
+
+sessions.new_session = function(connection_ix)
+  connection_ix = connection_ix or connections.peek()
+  local handler = function(data)
+    sessions.register_session(connection_ix, data['new-session'])
+  end
+
+  local conn = connections.store[connection_ix]
+  local clone = ops.clone{}
+  core.send(conn, clone.payload(), handler)
+end
+
+
+return sessions