refactor(wezterm): place tab specific config under tabbar.lua

dots/.config/wezterm/config/tabbar.lua

@@ -1,3 +1,161 @@
+local wezterm = require("wezterm")
+local color_names = require("config.theme.colors").color_names
+
+
+local edges = {
+    solid = {
+        left = "",
+        right = "",
+    },
+    empty = {
+        left = "",
+        right = "",
+    },
+}
+
+---@diagnostic disable-next-line: unused-local
+wezterm.on("format-tab-title", function(tab, tabs, panes, config, hover, max_width)
+    local function tab_title(tab_info)
+        local title = tab_info.tab_title
+        -- if the tab title is explicitly set, take that
+        if title and #title > 0 then
+            return title
+        end
+        -- Otherwise, use the title from the active pane
+        -- in that tab
+        return tab_info.active_pane.title
+    end
+
+    local bg = color_names.kanagawa.sumiInk0
+    local fg = color_names.kanagawa.sumiInk4
+
+    local edge_bg = color_names.kanagawa.sumiInk0
+    local edge_fg = color_names.kanagawa.oniViolet
+
+    local title = " " .. wezterm.truncate_right(tab_title(tab), max_width - 2) .. " "
+
+    if tab.is_active then
+        bg = color_names.kanagawa.sumiInk0
+        fg = color_names.kanagawa.oniViolet
+    elseif hover then
+        fg = color_names.kanagawa.peachRed
+    end
+
+    return {
+        { Background = { Color = edge_bg } },
+        { Foreground = { Color = edge_fg } },
+        { Background = { Color = bg } },
+        { Foreground = { Color = fg } },
+        { Text = title },
+        { Background = { Color = edge_bg } },
+        { Foreground = { Color = fg } },
+        { Text = edges.empty.left },
+        { Background = { Color = bg } },
+        { Foreground = { Color = fg } },
+    }
+end)
+
+wezterm.on("update-status", function(window, pane)
+    -- Each element holds the text for a cell in a "powerline" style << fade
+
+    -- Figure out the cwd and host of the current pane.
+    -- This will pick up the hostname for the remote host if your
+    -- shell is using OSC 7 on the remote host.
+    local cwd_uri = pane:get_current_working_dir()
+    local hostname = ""
+    local cwd = ""
+    if cwd_uri then
+        cwd_uri = cwd_uri:sub(8)
+        local slash = cwd_uri:find("/")
+        if slash then
+            hostname = cwd_uri:sub(1, slash - 1)
+            -- Remove the domain name portion of the hostname
+            local dot = hostname:find("[.]")
+            if dot then
+                hostname = hostname:sub(1, dot - 1)
+            end
+            hostname = "@" .. hostname
+            -- and extract the cwd from the uri
+            cwd = cwd_uri:sub(slash)
+        end
+    end
+
+    cwd = " " .. cwd
+
+    local date = " " .. wezterm.strftime("%a, %b %-d, %I:%M %p")
+
+    -- An entry for each battery (typically 0 or 1 battery)
+    local battery = ""
+    for _, b in ipairs(wezterm.battery_info()) do
+        local charge_percent = b.state_of_charge * 100
+        local battery_icon = ""
+
+        if charge_percent < 100 then
+            battery_icon = ""
+        elseif charge_percent < 70 then
+            battery_icon = ""
+        elseif charge_percent < 60 then
+            battery_icon = ""
+        elseif charge_percent < 50 then
+            battery_icon = ""
+        elseif charge_percent < 40 then
+            battery_icon = ""
+        elseif charge_percent < 30 then
+            battery_icon = ""
+        elseif charge_percent < 20 then
+            battery_icon = ""
+        elseif charge_percent < 10 then
+            battery_icon = ""
+        end
+
+        battery = battery_icon .. " " .. string.format("%.0f%%", charge_percent)
+    end
+
+    -- Color palette for the backgrounds of each cell
+    local fade_colors = {
+        { bg = color_names.kanagawa.roninYellow, fg = color_names.kanagawa.sumiInk0 },
+        { bg = color_names.kanagawa.springGreen, fg = color_names.kanagawa.sumiInk0 },
+        { bg = color_names.kanagawa.crystalBlue, fg = color_names.kanagawa.sumiInk0 },
+        { bg = color_names.kanagawa.oniViolet, fg = color_names.kanagawa.sumiInk0 },
+    }
+
+    -- The elements to be formatted
+    local elements = {}
+    -- Ensure the items have a "cap" on them
+    table.insert(elements, { Foreground = { Color = fade_colors[1].bg } })
+    table.insert(elements, { Text = edges.solid.right })
+
+    -- How many cells have been formatted
+    local num_cells = 0
+
+    -- Translate a cell into elements
+    local function push(text, is_last)
+        local cell_no = num_cells + 1
+        table.insert(elements, { Foreground = { Color = fade_colors[cell_no].fg } })
+        table.insert(elements, { Background = { Color = fade_colors[cell_no].bg } })
+        table.insert(elements, { Text = " " .. text .. " " })
+        if not is_last then
+            table.insert(elements, { Foreground = { Color = fade_colors[cell_no + 1].bg } })
+            table.insert(elements, { Text = edges.solid.right })
+        end
+        num_cells = num_cells + 1
+    end
+
+    local cells = {
+        cwd,
+        battery,
+        date,
+        hostname,
+    }
+    while #cells > 0 do
+        local cell = table.remove(cells, 1)
+        push(cell, #cells == 0)
+    end
+
+    window:set_right_status(wezterm.format(elements))
+end)
+
+
 return {
     enable_tab_bar = true,
     tab_bar_at_bottom = true,

dots/.config/wezterm/config/theme/colors.lua

@@ -42,6 +42,8 @@ local color_names = {
     },
 }
 
+M.color_names = color_names
+
 local colors = {
     tokyonight_night = {
         foreground = "#c0caf5",