✨ feat(lualine): implement custom lualine sections

Implements lualine sections for WakaTime, wordcount, searchcount, music
metadata, git-blame and more!

Also implements automatic truncating throughout so that sections will
truncate or hide depending on the available space.

lua/config/lua_line.lua

@@ -0,0 +1,159 @@
+-- -----------------------------------------------------------------------------
+-- -------------------------------- LUA-LINE -----------------------------------
+-- -----------------------------------------------------------------------------
+
+--- @param trunc_width number trunctates component when screen width is less then trunc_width
+--- @param trunc_len number truncates component to trunc_len number of chars
+--- @param hide_width number hides component when window width is smaller then hide_width
+--- @param no_ellipsis boolean whether to disable adding '...' at end after truncation
+--- return function that can format the component accordingly
+local function trunc(trunc_width, trunc_len, hide_width, no_ellipsis)
+  return function(str)
+    local win_width = vim.fn.winwidth(0)
+    if hide_width and win_width < hide_width then
+      return ""
+    elseif
+      trunc_width
+      and trunc_len
+      and win_width < trunc_width
+      and #str > trunc_len
+    then
+      return str:sub(1, trunc_len) .. (no_ellipsis and "" or "...")
+    end
+    return str
+  end
+end
+
+--- @param trunc_width number trunctates component when screen width is less then trunc_width
+--- @param trunc_len number truncates component to trunc_len number of chars
+--- @param hide_width number hides component when window width is smaller then hide_width
+--- @param no_ellipsis boolean whether to disable adding '...' at end after truncation
+--- return function that can format the component accordingly
+local function trunc_front(trunc_width, trunc_len, hide_width, no_ellipsis)
+  return function(str)
+    local win_width = vim.fn.winwidth(0)
+    if hide_width and win_width < hide_width then
+      return ""
+    elseif
+      trunc_width
+      and trunc_len
+      and win_width < trunc_width
+      and #str > trunc_len
+    then
+      local truncated_str = str:sub(-trunc_len)
+      return (no_ellipsis and "" or "...") .. truncated_str
+    end
+    return str
+  end
+end
+
+-- Ensure the function is called only once
+local lualine_updated = false
+
+-- Function to add WakaTime and Music Current data to lualine
+local function add_custom_sections_to_lualine()
+  if lualine_updated then
+    return
+  end
+  lualine_updated = true
+
+  -- Require the dependencies
+  local wakatime_cache = require("config.wakatime_cache")
+  local music_current = require("config.music_current")
+  local git_blame = require("gitblame")
+
+  -- Get the current lualine configuration
+  local config = require("lualine").get_config()
+
+  config.options.section_separators = { left = "", right = "" }
+
+  config.options.component_separators = { left = "", right = "" }
+
+  config.options.globalstatus = true
+
+  -- Replace the lualine_a section
+  config.sections.lualine_a = {
+    { "mode", fmt = trunc(80, 4, 0, true) },
+  }
+
+  -- Replace the lualine_b section
+  config.sections.lualine_b = {
+    { "branch", fmt = trunc(80, 4, 0, true) },
+  }
+
+  -- Add Git-blame to lualine_c section
+  table.insert(config.sections.lualine_c, {
+    git_blame.get_current_blame_text,
+    fmt = trunc_front(160, 40, 120, true),
+    cond = git_blame.is_blame_text_available,
+  })
+
+  -- Add the WakaTime data to the lualine_x section
+  table.insert(config.sections.lualine_x, {
+    function()
+      return (wakatime_cache.get_today() or "Loading...")
+    end,
+    icon = wakatime_cache.get_icon(),
+    fmt = trunc(120, 20, 120, true),
+    on_click = function(button)
+      if button == "left" then
+        vim.cmd(":WakaTimeToday")
+      end
+    end,
+  })
+
+  -- Add the Music Current data to the lualine_y section
+  table.insert(config.sections.lualine_y, {
+    function()
+      return music_current.get_current() -- Always display the current state
+    end,
+    icon = music_current.get_icon(),
+    fmt = trunc(120, 20, 80, true),
+    on_click = function(button)
+      if button == "left" then
+        vim.cmd(":MusicPause")
+      elseif button == "right" then
+        vim.cmd(":MusicNext")
+      end
+    end,
+  })
+
+  -- Add word count to the lualine_y section
+  table.insert(config.sections.lualine_y, 1, {
+    function()
+      return vim.fn.wordcount().words
+    end,
+    icon = " ",
+    fmt = trunc(140, 20, 140, true),
+  })
+
+  -- Add selection_count to the lualine_y section
+  table.insert(config.sections.lualine_y, 2, {
+    "selection_count",
+    fmt = trunc(120, 20, 120, true),
+  })
+
+  -- Add filesize to the lualine_y section
+  table.insert(config.sections.lualine_y, {
+    "filesize",
+    fmt = trunc(120, 20, 120, true),
+  })
+
+  -- Add search count to the lualine_y section
+  table.insert(config.sections.lualine_y, 1, {
+    "searchcount",
+    fmt = trunc(80, 20, 80, true),
+  })
+
+  -- Apply the new configuration
+  require("lualine").setup(config)
+end
+
+-- Use an autocommand to ensure it runs after lualine is set up
+vim.api.nvim_create_autocmd("User", {
+  pattern = "LualineSetup",
+  callback = add_custom_sections_to_lualine,
+})
+
+-- Or use defer_fn if you're unsure about the exact timing
+vim.defer_fn(add_custom_sections_to_lualine, 100) -- Delay in milliseconds