(feat): add theme customization (#47)

Signed-off-by: everettraven <everettraven@gmail.com>

README.md

@@ -7,6 +7,13 @@
 
 [![asciicast](https://asciinema.org/a/625808.svg)](https://asciinema.org/a/625808)
 
+## Motivation
+
+I created `buoy` because I do a lot of work on Kubernetes controllers. When I am making changes, I often find myself typing out a bunch of the same `kubectl ...` commands and switching between them. 
+Some of those commands are blocking (i.e `kubectl get logs -f ...`) and to keep them running while running other commands required opening a new terminal window and more typing.
+Since I was running pretty repetitive commands I thought there had to be a better solution. I looked through existing CLI tooling around this space, but none had a simple interface that followed the pattern of
+"define what you want to see and I'll show it to you". Thus `buoy` was created to fill this gap (and save me some time while delaying the inevitable arthritis).
+
 ## Quickstart
 
 Install `buoy` by downloading one of the binaries from the [releases](https://github.com/everettraven/buoy/releases) or by running:

docs/_sidebar.md

@@ -8,4 +8,5 @@
 - Features
     - [Dot Notation Field Paths](features/dot-notation-paths.md)
     - [Remote Dashboard Configurations](features/remote-configs.md)
+    - [Theme Customization](features/themes.md)
 

docs/features/themes.md

@@ -0,0 +1,33 @@
+# Customizing the theme of your dashboards
+
+`buoy` supports customizing the theme of your dashboard via a theme configuration file. There are two ways this can be done:
+1. Specifying the path to the file via the `--theme` flag. Ex: `buoy dash.json --theme path/to/theme.json`
+2. Creating a theme file in the default theme configuration file path (`~/.config/buoy/themes/default.json`)
+
+Currently, the theme configuration files must be JSON and looks like:
+```json
+{
+    "tabColor": {
+        "light": "63",
+        "dark": "117"
+    },
+    "selectedRowHighlightColor":  {
+        "light": "63",
+        "dark": "117"
+    },
+    "logSearchHighlightColor":  {
+        "light": "63",
+        "dark": "117"
+    },
+    "syntaxHighlightDarkColor": "nord",
+    "syntaxHighlightLightColor": "monokailight"
+}
+```
+
+?> The example above is a representation of the default theme that is used when no theme configurations are found/specified
+
+- `tabColor` is the adaptive color scheme used when rendering each tab and the borders of the dashboard. `buoy` renders adaptively based on the color of the terminal background so the color code specified in `light` will be the color that is used when rendering on a light terminal background and `dark` will be used when rendering on a dark terminal background. `buoy` uses https://github.com/charmbracelet/lipgloss for styling and thus respects the same color values. The supported values for colors can be found at https://github.com/charmbracelet/lipgloss?tab=readme-ov-file#colors
+- `selectedRowHighlightColor` is the adaptive color scheme used to highlight the currently selected row on a `table` panel.
+- `logSearchHighlightColor` is the adaptive color scheme used to highlight search results when searching in a `log` panel.
+- `syntaxHighlightDarkColor` is the color theme used for syntax highlighting against a dark terminal background. `buoy` uses https://github.com/alecthomas/chroma for syntax highlighting and thus the same color themes. The available color themes can be found at https://github.com/alecthomas/chroma/tree/master/styles
+- `syntaxHighlightLightColor` is the color theme used for syntax highlighting against a light terminal background.

examples/themes/theme.json

@@ -0,0 +1,16 @@
+{
+    "tabColor": {
+        "light": "236",
+        "dark": "220"
+    },
+    "selectedRowHighlightColor":  {
+        "light": "236",
+        "dark": "220"
+    },
+    "logSearchHighlightColor":  {
+        "light": "236",
+        "dark": "220"
+    },
+    "syntaxHighlightDarkColor": "monokai",
+    "syntaxHighlightLightColor": "monokailight"
+}

internal/cli/root.go

@@ -12,6 +12,7 @@ import (
 
 	tea "github.com/charmbracelet/bubbletea"
 	"github.com/everettraven/buoy/pkg/charm/models"
+	"github.com/everettraven/buoy/pkg/charm/styles"
 	"github.com/everettraven/buoy/pkg/paneler"
 	"github.com/everettraven/buoy/pkg/types"
 	"github.com/spf13/cobra"
@@ -24,15 +25,20 @@ var rootCommand = &cobra.Command{
 	Short: "declarative kubernetes dashboard in the terminal",
 	Args:  cobra.ExactArgs(1),
 	RunE: func(cmd *cobra.Command, args []string) error {
-		return run(args[0])
+		themePath, err := cmd.Flags().GetString("theme")
+		if err != nil {
+			return fmt.Errorf("getting theme flag: %w", err)
+		}
+		return run(args[0], themePath)
 	},
 }
 
 func init() {
 	rootCommand.AddCommand(versionCommand)
+	rootCommand.Flags().String("theme", styles.DefaultThemePath, "path to theme file")
 }
 
-func run(path string) error {
+func run(path string, themePath string) error {
 	var raw []byte
 	var ext string
 	u, err := url.ParseRequestURI(path)
@@ -65,8 +71,13 @@ func run(path string) error {
 		log.Fatalf("unmarshalling dashboard: %s", err)
 	}
 
+	theme, err := styles.LoadTheme(themePath)
+	if err != nil {
+		log.Fatalf("loading theme: %s", err)
+	}
+
 	cfg := config.GetConfigOrDie()
-	p, err := paneler.NewDefaultPaneler(cfg)
+	p, err := paneler.NewDefaultPaneler(cfg, theme)
 	if err != nil {
 		log.Fatalf("configuring paneler: %s", err)
 	}
@@ -80,7 +91,7 @@ func run(path string) error {
 		panelModels = append(panelModels, mod)
 	}
 
-	m := models.NewDashboard(models.DefaultDashboardKeys, panelModels...)
+	m := models.NewDashboard(models.DefaultDashboardKeys, theme, panelModels...)
 	if _, err := tea.NewProgram(m, tea.WithAltScreen()).Run(); err != nil {
 		fmt.Println("Error running program:", err)
 		os.Exit(1)

pkg/charm/models/dashboard.go

@@ -53,19 +53,21 @@ type Dashboard struct {
 	width  int
 	help   help.Model
 	keys   DashboardKeyMap
+	theme  *styles.Theme
 }
 
-func NewDashboard(keys DashboardKeyMap, panels ...tea.Model) *Dashboard {
+func NewDashboard(keys DashboardKeyMap, theme *styles.Theme, panels ...tea.Model) *Dashboard {
 	tabs := []Tab{}
 	for _, panel := range panels {
 		if namer, ok := panel.(Namer); ok {
 			tabs = append(tabs, Tab{Name: namer.Name(), Model: panel})
 		}
 	}
 	return &Dashboard{
-		tabber: NewTabber(DefaultTabberKeys, tabs...),
+		tabber: NewTabber(DefaultTabberKeys, theme, tabs...),
 		help:   help.New(),
 		keys:   keys,
+		theme:  theme,
 	}
 }
 
@@ -96,7 +98,7 @@ func (d *Dashboard) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 }
 
 func (d *Dashboard) View() string {
-	div := styles.TabGap().Render(strings.Repeat(" ", max(0, d.width-2)))
+	div := d.theme.TabGap().Render(strings.Repeat(" ", max(0, d.width-2)))
 	return lipgloss.JoinVertical(0, d.tabber.View(), div, d.help.View(d.Help()))
 }
 

pkg/charm/models/panels/logs.go

@@ -72,9 +72,10 @@ type Logs struct {
 	mode           string
 	keys           LogsKeyMap
 	strictSearch   bool
+	theme          *styles.Theme
 }
 
-func NewLogs(keys LogsKeyMap, name string) *Logs {
+func NewLogs(keys LogsKeyMap, name string, theme *styles.Theme) *Logs {
 	searchbar := textinput.New()
 	searchbar.Prompt = "> "
 	searchbar.Placeholder = "search term"
@@ -87,6 +88,7 @@ func NewLogs(keys LogsKeyMap, name string) *Logs {
 		content:   "",
 		mode:      modeLogs,
 		keys:      keys,
+		theme:     theme,
 	}
 }
 
@@ -139,7 +141,7 @@ func (m *Logs) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	}
 
 	if m.mode == modeSearched {
-		m.viewport.SetContent(searchLogs(m.content, m.searchbar.Value(), m.viewport.Width, m.strictSearch))
+		m.viewport.SetContent(m.searchLogs())
 	}
 
 	m.viewport, cmd = m.viewport.Update(msg)
@@ -151,7 +153,7 @@ func (m *Logs) View() string {
 	if m.strictSearch {
 		searchMode = "strict"
 	}
-	searchModeOutput := styles.LogSearchModeStyle().Render(fmt.Sprintf("search mode: %s", searchMode))
+	searchModeOutput := m.theme.LogSearchModeStyle().Render(fmt.Sprintf("search mode: %s", searchMode))
 
 	if m.mode == modeSearching {
 		return lipgloss.JoinVertical(lipgloss.Top,
@@ -185,19 +187,22 @@ func (m *Logs) Name() string {
 	return m.name
 }
 
-// searchLogs searches the logs for the given term
+// searchLogs searches the logs for the term in the searchbar
 // and returns a string with the matching log lines
 // and the matched term highlighted. Uses fuzzy search
-// if strict is false. Wraps logs to the given width if wrap > 0.
-func searchLogs(logs, term string, wrap int, strict bool) string {
-	splitLogs := strings.Split(logs, "\n")
+// if strict search is not enabled. Wraps logs to the width of the viewport.
+func (m *Logs) searchLogs() string {
+	term := m.searchbar.Value()
+	wrap := m.viewport.Width
+	strict := m.strictSearch
+	splitLogs := strings.Split(m.content, "\n")
 	if strict {
-		return strictMatchLogs(term, splitLogs, wrap)
+		return strictMatchLogs(term, splitLogs, m.viewport.Width, m.theme.LogSearchHighlightStyle())
 	}
-	return fuzzyMatchLogs(term, splitLogs, wrap)
+	return fuzzyMatchLogs(term, splitLogs, wrap, m.theme.LogSearchHighlightStyle())
 }
 
-func strictMatchLogs(searchTerm string, logLines []string, wrap int) string {
+func strictMatchLogs(searchTerm string, logLines []string, wrap int, style lipgloss.Style) string {
 	var results strings.Builder
 	for _, log := range logLines {
 		if wrap > 0 {
@@ -207,15 +212,15 @@ func strictMatchLogs(searchTerm string, logLines []string, wrap int) string {
 			highlighted := strings.Replace(
 				log,
 				searchTerm,
-				styles.LogSearchHighlightStyle().Render(searchTerm), -1,
+				style.Render(searchTerm), -1,
 			)
 			results.WriteString(highlighted + "\n")
 		}
 	}
 	return results.String()
 }
 
-func fuzzyMatchLogs(searchTerm string, logLines []string, wrap int) string {
+func fuzzyMatchLogs(searchTerm string, logLines []string, wrap int, style lipgloss.Style) string {
 	var matches []fuzzy.Match
 	if wrap > 0 {
 		wrappedLogs := []string{}
@@ -231,7 +236,7 @@ func fuzzyMatchLogs(searchTerm string, logLines []string, wrap int) string {
 	for _, match := range matches {
 		for i := 0; i < len(match.Str); i++ {
 			if matched(i, match.MatchedIndexes) {
-				results.WriteString(styles.LogSearchHighlightStyle().Render(string(match.Str[i])))
+				results.WriteString(style.Render(string(match.Str[i])))
 			} else {
 				results.WriteString(string(match.Str[i]))
 			}

pkg/charm/models/panels/table.go

@@ -74,9 +74,10 @@ type Table struct {
 	err      error
 	tempRows []tbl.Row
 	keys     TableKeyMap
+	theme    *styles.Theme
 }
 
-func NewTable(keys TableKeyMap, table *buoytypes.Table, lister cache.GenericLister, scope meta.RESTScopeName) *Table {
+func NewTable(keys TableKeyMap, table *buoytypes.Table, lister cache.GenericLister, scope meta.RESTScopeName, theme *styles.Theme) *Table {
 	tblColumns := []string{}
 	width := 0
 	for _, column := range table.Columns {
@@ -85,7 +86,7 @@ func NewTable(keys TableKeyMap, table *buoytypes.Table, lister cache.GenericList
 	}
 
 	tab := tbl.New(tblColumns, 100, 10)
-	tab.Styles.SelectedRow = styles.TableSelectedRowStyle()
+	tab.Styles.SelectedRow = theme.TableSelectedRowStyle()
 
 	return &Table{
 		table:    tab,
@@ -98,6 +99,7 @@ func NewTable(keys TableKeyMap, table *buoytypes.Table, lister cache.GenericList
 		rows:     map[types.UID]*RowInfo{},
 		columns:  table.Columns,
 		keys:     keys,
+		theme:    theme,
 	}
 }
 
@@ -242,9 +244,9 @@ func (m *Table) FetchContentForIndex(index int) (string, error) {
 		return "", fmt.Errorf("converting JSON to YAML for item %q: %w", name, err)
 	}
 
-	theme := "nord"
+	theme := m.theme.SyntaxHighlightDarkTheme
 	if !lipgloss.HasDarkBackground() {
-		theme = "monokailight"
+		theme = m.theme.SyntaxHighlightLightTheme
 	}
 	rw := &bytes.Buffer{}
 	err = quick.Highlight(rw, string(itemYAML), "yaml", "terminal16m", theme)

pkg/charm/models/tabber.go

@@ -24,12 +24,14 @@ type Tabber struct {
 	selected int
 	keyMap   TabberKeyMap
 	width    int
+	theme    *styles.Theme
 }
 
-func NewTabber(keyMap TabberKeyMap, tabs ...Tab) *Tabber {
+func NewTabber(keyMap TabberKeyMap, theme *styles.Theme, tabs ...Tab) *Tabber {
 	return &Tabber{
 		tabs:   tabs,
 		keyMap: keyMap,
+		theme:  theme,
 	}
 }
 
@@ -71,22 +73,23 @@ func (t *Tabber) Update(msg tea.Msg) (*Tabber, tea.Cmd) {
 }
 
 func (t *Tabber) View() string {
-	tabRightArrow := styles.TabGap().Render("  ▶  ")
-	tabLeftArrow := styles.TabGap().Render("  ◀  ")
+	tabRightArrow := t.theme.TabGap().Render("  ▶  ")
+	tabLeftArrow := t.theme.TabGap().Render("  ◀  ")
 
 	pager := &pager{
 		tabRightArrow: tabRightArrow,
 		tabLeftArrow:  tabLeftArrow,
 		pages:         []page{},
+		theme:         t.theme,
 	}
 	pager.setPages(t.tabs, t.selected, t.width)
 
 	tabBlock := pager.renderForSelectedTab(t.selected)
 	// gap is a repeating of the spaces so that the bottom border continues the entire width
 	// of the terminal. This allows it to look like a proper set of tabs
-	gap := styles.TabGap().Render(strings.Repeat(" ", max(0, t.width-lipgloss.Width(tabBlock)-2)))
+	gap := t.theme.TabGap().Render(strings.Repeat(" ", max(0, t.width-lipgloss.Width(tabBlock)-2)))
 	tabsWithBorder := lipgloss.JoinHorizontal(lipgloss.Bottom, tabBlock, gap)
-	content := styles.ContentStyle().Render(t.tabs[t.selected].Model.View())
+	content := t.theme.ContentStyle().Render(t.tabs[t.selected].Model.View())
 	return lipgloss.JoinVertical(0, tabsWithBorder, content)
 }
 
@@ -141,6 +144,7 @@ type pager struct {
 	pages         []page
 	tabRightArrow string
 	tabLeftArrow  string
+	theme         *styles.Theme
 }
 
 func (p *pager) renderForSelectedTab(selected int) string {
@@ -164,9 +168,9 @@ func (p *pager) setPages(tabs []Tab, selected int, width int) {
 	tempTab := ""
 	tempPage := page{start: 0, tabs: []string{}}
 	for i, tab := range tabs {
-		renderedTab := styles.TabStyle().Render(tab.Name)
+		renderedTab := p.theme.TabStyle().Render(tab.Name)
 		if i == selected {
-			renderedTab = styles.SelectedTabStyle().Render(tab.Name)
+			renderedTab = p.theme.SelectedTabStyle().Render(tab.Name)
 		}
 		tempTab = lipgloss.JoinHorizontal(lipgloss.Top, tempTab, renderedTab)
 		joined := lipgloss.JoinHorizontal(lipgloss.Bottom, p.tabLeftArrow, tempTab, p.tabRightArrow)