refactor: improve buffer system

lua/chai/buffers.lua

@@ -2,6 +2,10 @@
 
 local M = {}
 
+local buffer_list = {
+    'test',
+}
+
 local buffers = {}
 
 function M.setup()
@@ -10,11 +14,11 @@ end
 
 -- should return created chai buffer
 local function resolve_buffer_path(path)
-    if string.match(path, '^chai://test/?$') then
-        local buffer = vim.deepcopy(require('chai.buffers.test'))
-        buffer.args = {}
-
-        return buffer
+    for _, value in ipairs(buffer_list) do
+        local buf = require('chai.buffers.' .. value).check(path)
+        if buf ~= nil then
+            return buf
+        end
     end
 
     -- user is idiot imbecyle etc
@@ -29,6 +33,9 @@ function M.create_buffer(buffer)
 end
 
 function M.destroy_buffer(buffer)
+    if buffers[buffer] == nil then
+        return
+    end
     if type(buffers[buffer].destroy) == 'function' then
         buffers[buffer].destroy(buffer)
     end
@@ -36,18 +43,27 @@ function M.destroy_buffer(buffer)
 end
 
 function M.on_hide(buffer)
+    if buffers[buffer] == nil then
+        return
+    end
     if type(buffers[buffer].on_hide) == 'function' then
         buffers[buffer].on_hide(buffer)
     end
 end
 
 function M.on_enter(buffer)
+    if buffers[buffer] == nil then
+        return
+    end
     if type(buffers[buffer].on_enter) == 'function' then
         buffers[buffer].on_enter(buffer)
     end
 end
 
 function M.on_write(buffer)
+    if buffers[buffer] == nil then
+        return
+    end
     if type(buffers[buffer].on_write) == 'function' then
         buffers[buffer].on_write(buffer)
     end