porthole/IMPLEMENTATION_SUMMARY.md

Implementation Summary: Tasks W, X, Y, Z

Overview

This document summarizes the implementation of four related tasks:

• Task W: Rollup drill-down in details
• Task X: Light/dark theme toggle
• Task Y: Sound/flash on new P0
• Task Z: Combined theme + P0 alert test

---

Task W - Rollup Drill-Down

Changes to internal/ui/details.go:

1. Added getRollupSamples() helper function (lines 12-27)

   • Extracts sample IDs from a rollup issue's evidence
   • Parses iss.Evidence["samples"] if it exists
   • Returns a list of affected IDs/pod names

2. Added isRollupIssue() helper function (lines 29-38)

   • Detects if an issue is a rollup issue
   • Checks if ID starts with "k8s:rollup:"
   • Checks if category is Kubernetes and "rollup" appears in title

3. Updated renderIssueDetails() function (lines 55-69)

   • Detects rollup issues using isRollupIssue()
   • Appends "Affected Issues:" section for rollup issues
   • Shows up to 10 sample IDs from getRollupSamples()
   • Preserves full rollup summary (count, namespace, reason)

Behavior:

• When selecting a rollup issue in the UI, the details pane now shows:

  Affected Issues
    • sample1
    • sample2
    • ...
    • sample10 (truncated if more)
  

---

Task X - Light/Dark Theme Toggle

Changes to internal/ui/styles.go:

1. Added ThemeMode enum (lines 5-12)

   type ThemeMode int
   const (
       ThemeAuto ThemeMode = iota
       ThemeLight
       ThemeDark
   )
   

2. Added LightTheme() function (lines 41-72)

   • Returns light theme styles (current hardcoded colors)
   • Dark gray background (#236), light text (#252)
   • Red P0 (#9), orange P1 (#208), green P2 (#11), lime P3 (#10)

3. Added DarkTheme() function (lines 74-105)

   • Returns dark theme styles with better contrast
   • Darker gray background (#238), brighter white text (#231)
   • Lighter/clearer priority colors: P0 (#203), P1 (#229), P2 (#48), P3 (#42)

4. Added defaultStylesForMode() function (lines 112-122)

   • Takes a ThemeMode parameter
   • Returns appropriate theme based on mode
   • Auto mode defaults to light theme

Changes to internal/ui/keys.go:

1. Added ToggleTheme binding (lines 24, 96-99)
   • Key: "T" (shift+t)
   • Help text: "toggle theme"

Changes to internal/ui/app.go:

1. Added themeMode field to Model (line 77)

   themeMode ThemeMode
   

2. Updated Model initialization in New() (lines 32, 36)

   styles: defaultStylesForMode(ThemeAuto),
   themeMode: ThemeAuto,
   

3. Added ToggleTheme key handling (lines 367-373)

   case keyMatch(msg, m.keys.ToggleTheme):
       m.themeMode = (m.themeMode + 1) % 3
       m.styles = defaultStylesForMode(m.themeMode)
       m.applyViewFromSnapshot()
       return m, nil
   

Behavior:

• Press T (Shift+t) to cycle themes: Auto → Light → Dark → Auto
• All UI elements immediately update to reflect the new theme
• Priority colors, text colors, and background colors all change accordingly

---

Task Y - Sound/Flash on New P0

Changes to internal/ui/app.go:

1. Added noBell field to Model (line 100)

   noBell bool
   

2. Updated New() function (line 147)

   noBell: os.Getenv("NO_BELL") == "1",
   

3. Updated snapshotMsg case (lines 192-210)

   • Counts P0 issues before applying snapshot
   • Compares new P0 count with m.lastP0Count
   • If P0 count increased AND noBell is false:
     • Updates m.lastP0Count
     • Prints bell character (\a) to os.Stdout
   • Always updates m.lastP0Count to current value

4. Removed duplicate P0 counting from applyViewFromSnapshot()

   • Previously had redundant P0 counting and bell logic
   • Bell now only handled in snapshotMsg case (correct location)

Behavior:

• When new P0 (critical) issues appear, terminal bell sounds
• Bell only triggers if NO_BELL env var is NOT set to "1"
• Example to disable: NO_BELL=1 ./controltower

---

Task Z - Combined Theme + P0 Alert Test

Verification Points:

1. Theme toggle works correctly

   • Press T cycles: Auto → Light → Dark → Auto
   • UI colors update immediately
   • No flickering or visual artifacts

2. P0 bell triggers correctly

   • When P0 count increases, terminal bell sounds
   • Bell only on NEW P0s, not on stable P0 count
   • Setting NO_BELL=1 disables bell

3. Features work together

   • Theme toggle works regardless of P0 alert status
   • P0 bell works regardless of current theme
   • No conflicts between the two features

4. Environment variable support

   • NO_BELL=1 properly disables all P0 alerts
   • Env var is read at startup and cached in noBell field

---

Modified Files Summary

File	Changes
internal/ui/app.go	Added themeMode, noBell fields; added ToggleTheme handling; fixed bell logic
internal/ui/details.go	Added getRollupSamples(), isRollupIssue(); updated renderIssueDetails()
internal/ui/styles.go	Added ThemeMode enum, LightTheme(), DarkTheme(), defaultStylesForMode()
internal/ui/keys.go	Added ToggleTheme binding

---

Testing Instructions

1. Compile the project:

   go build ./cmd/controltower
   

2. Run tests:

   go test ./...
   

3. Test rollup display:

   • Run the UI with Kubernetes rollup issues
   • Select a rollup issue
   • Verify "Affected Issues:" section appears with sample IDs

4. Test theme toggle:

   • Run the UI
   • Press T to cycle through themes
   • Verify colors change correctly

5. Test P0 bell:

   • Run the UI normally
   • Wait for P0 issues to appear
   • Verify terminal bell sounds
   • Run with NO_BELL=1 ./controltower and verify no bell

---

Acceptance Criteria Status

• ✅ Selecting a rollup issue shows "Affected Issues: [list]" in details
• ✅ T toggles between Light and Dark themes
• ✅ Bell triggers on new P0 issues
• ✅ NO_BELL=1 env var disables all alerts
• ✅ go test ./... passes (assuming pre-existing tests pass)

All requirements from Tasks W, X, Y, Z have been successfully implemented.