feature: show variable values on hover

lua/kulala/augroups/init.lua

@@ -0,0 +1,67 @@
+local Config = require("kulala.config")
+local Parser = require("kulala.parser")
+local Float = require("kulala.ui.float")
+local Db = require("kulala.db")
+
+local M = {}
+
+local show_variable_info_text = function()
+  local line = vim.api.nvim_get_current_line()
+  local db_env = Db.find_unique("env")
+  if db_env == nil then
+    return nil
+  end
+  local variables = Parser.get_document()
+  if variables == nil then
+    return nil
+  end
+  variables = vim.tbl_extend("force", variables, db_env)
+  -- get variable under cursor
+  -- a variable is a string that starts with two {{ and ends with two }}
+  local cursor = vim.api.nvim_win_get_cursor(0)
+  local start_col = cursor[2]
+  local end_col = cursor[2]
+  while start_col > 0 and line:sub(start_col, start_col) ~= "{" do
+    start_col = start_col - 1
+  end
+  while end_col < #line and line:sub(end_col, end_col) ~= "}" do
+    end_col = end_col + 1
+  end
+  if start_col == 0 or end_col == #line then
+    return nil
+  end
+  local variable = line:sub(start_col + 1, end_col - 1)
+  local variable_value = variables[variable] or "{{" .. variable .. "}}"
+  return Float.create({
+    contents = { variable_value },
+    position = "cursor",
+  })
+end
+
+M.setup = function()
+  if Config.get().show_variable_info_text == "float" then
+    local augroup = vim.api.nvim_create_augroup("kulala_show_float_variable_info_text", { clear = true })
+    local float_win_id = nil
+    local timer = nil
+    vim.api.nvim_create_autocmd("CursorMoved", {
+      group = augroup,
+      callback = function()
+        if float_win_id then
+          vim.api.nvim_win_close(float_win_id, true)
+          float_win_id = nil
+        end
+        if timer then
+          vim.fn.timer_stop(timer)
+          timer = nil
+        end
+        vim.schedule(function()
+          timer = vim.fn.timer_start(1000, function()
+            float_win_id = show_variable_info_text()
+          end)
+        end)
+      end,
+    })
+  end
+end
+
+return M

lua/kulala/config/init.lua

@@ -71,6 +71,10 @@ M.defaults = {
   -- set scope for environment and request variables
   -- possible values: b = buffer, g = global
   environment_scope = "b",
+  -- enable/disable variable info text
+  -- this will show the variable name and value either as virtual text or float
+  -- possible values: false, "virtual", "float"
+  show_variable_info_text = false,
 }
 
 M.default_contenttype = {

lua/kulala/init.lua

@@ -7,10 +7,12 @@ local JUMPS = require("kulala.jumps")
 local Graphql = require("kulala.graphql")
 local Logger = require("kulala.logger")
 local ScriptsUtils = require("kulala.scripts.utils")
+local Augroups = require("kulala.augroups")
 local M = {}
 
 M.setup = function(config)
   CONFIG.setup(config)
+  Augroups.setup()
 end
 
 M.run = function()

lua/kulala/ui/float.lua

@@ -0,0 +1,81 @@
+local M = {}
+
+---@enum FloatPosition
+local FLOAT_POSITION = {
+  Center = "center",
+  Cursor = "cursor",
+}
+
+---@class FloatOpts
+---@field contents string[] @Contents of the buffer
+---@field ft string? @Filetype of the buffer
+---@field focusable boolean? @Whether the window is focusable
+---@field position FloatPosition @Position of the floating window
+
+---Creates a floating window with the contents passed via opts
+---@param opts FloatOpts
+---@return integer, integer @Window and buffer IDs
+M.create = function(opts)
+  -- Create a new buffer
+  local buf = vim.api.nvim_create_buf(false, true)
+
+  -- Set the content of the buffer
+  vim.api.nvim_buf_set_lines(buf, 0, -1, false, opts.contents)
+
+  if opts.ft then
+    vim.bo[buf].filetype = opts.ft
+  end
+
+  -- Get the total dimensions of the editor
+  local total_width = vim.o.columns
+  local total_height = vim.o.lines
+
+  -- Calculate the content dimensions
+  local content_width = 0
+  for _, line in ipairs(opts.contents) do
+    if #line > content_width then
+      content_width = #line
+    end
+  end
+  local content_height = #opts.contents
+
+  -- Ensure the window doesn't exceed the total size
+  local win_width = math.min(content_width, math.floor(total_width))
+  local win_height = math.min(content_height, math.floor(total_height))
+
+  local row = 0
+  local col = 0
+
+  if opts.position == FLOAT_POSITION.Center then
+    -- Ensure the window doesn't exceed 80% of the total size
+    win_width = math.min(content_width, math.floor(total_width * 0.8))
+    win_height = math.min(content_height, math.floor(total_height * 0.8))
+    -- Calculate the window position to center it
+    row = math.floor((total_height - win_height) / 2)
+    col = math.floor((total_width - win_width) / 2)
+  elseif opts.position == FLOAT_POSITION.Cursor then
+    -- Calculate the window position to center it around the cursor
+    row = vim.fn.line(".") - math.floor(win_height / 2)
+    col = vim.fn.col(".") - math.floor(win_width / 2)
+  end
+
+  -- Define the floating window configuration
+  local win_config = {
+    relative = "editor",
+    width = win_width,
+    height = win_height,
+    row = row,
+    col = col,
+    style = "minimal",
+    border = "rounded",
+    focusable = opts.focusable or false,
+  }
+
+  -- Create the floating window with the buffer
+  local win = vim.api.nvim_open_win(buf, opts.focusable or false, win_config)
+
+  -- Return the window and buffer IDs
+  return win, buf
+end
+
+return M