draft: initial implementation

lua/lz/n/loader.lua

@@ -0,0 +1,85 @@
+---@mod lz.n.loader
+
+local state = require('lz.n.state')
+
+local M = {}
+
+local DEFAULT_PRIORITY = 50
+
+---@package
+---@param plugin LzPlugin
+function M._load(plugin)
+  if plugin.enable == false or (type(plugin.enable) == 'function' and not plugin.enable()) then
+    return
+  end
+  require('lz.n.handler').disable(plugin)
+  -- TODO: Load plugin
+end
+
+---@param plugins table<string, LzPlugin>
+local function run_before_all(plugins)
+  for _, plugin in pairs(plugins) do
+    if plugin.beforeAll then
+      xpcall(
+        plugin.beforeAll,
+        vim.schedule_wrap(function(err)
+          vim.notify(
+            "Failed to run 'beforeAll' for " .. plugin.name .. ': ' .. tostring(err or ''),
+            vim.log.levels.ERROR
+          )
+        end),
+        plugin
+      )
+    end
+  end
+end
+
+---@param plugins table<string, LzPlugin>
+---@return LzPlugin[]
+local function get_eager_plugins(plugins)
+  local result = {}
+  for _, plugin in pairs(plugins) do
+    if plugin.lazy == false then
+      table.insert(result, plugin)
+    end
+  end
+  table.sort(result, function(a, b)
+    ---@cast a LzPlugin
+    ---@cast b LzPlugin
+    return (a.priority or DEFAULT_PRIORITY) > (b.priority or DEFAULT_PRIORITY)
+  end)
+  return result
+end
+
+--- Loads startup plugins, removing loaded plugins from the table
+---@param plugins table<string, LzPlugin>
+function M.load_startup_plugins(plugins)
+  run_before_all(plugins)
+  for _, plugin in pairs(get_eager_plugins(plugins)) do
+    M.load(plugin)
+    plugins[plugin.name] = nil
+  end
+end
+
+---@param plugins string | LzPlugin | string[] | LzPlugin[]
+function M.load(plugins)
+  plugins = (type(plugins) == 'string' or plugins.name) and { plugins } or plugins
+  ---@cast plugins (string|LzPlugin)[]
+  for _, plugin in pairs(plugins) do
+    local loadable = true
+    if type(plugin) == 'string' then
+      if state.plugins[plugin] then
+        plugin = state.plugins[plugin]
+      else
+        vim.notify('Plugin ' .. plugin .. ' not found', vim.log.levels.ERROR, { title = 'lz.n' })
+        loadable = false
+      end
+      ---@cast plugin LzPlugin
+    end
+    if loadable then
+      M._load(plugin)
+    end
+  end
+end
+
+return M