Add Today planning module scaffold

internal/briefing/summary_helpers.go

@@ -28,6 +28,13 @@ type TomorrowPlanning struct {
 	OvernightChangeWatch         []string
 }
 
+type TodayPlanning struct {
+	MorningReadiness             []string
+	CommuteSchoolWorkdayConcerns []string
+	OutdoorPlanning              []string
+	LateDayChangeWatch           []string
+}
+
 func buildOutdoorWindows(dayparts []forecast.DaypartSummary) OutdoorWindows {
 	var best *OutdoorWindow
 	var worst *OutdoorWindow
@@ -48,6 +55,49 @@ func buildOutdoorWindows(dayparts []forecast.DaypartSummary) OutdoorWindows {
 	return OutdoorWindows{Best: best, Worst: worst}
 }
 
+func buildTodayPlanning(summary *forecast.DailySummary) *TodayPlanning {
+	planning := &TodayPlanning{}
+	morning := daypartNamed(summary.Dayparts, "morning")
+	if morning != nil {
+		planning.MorningReadiness = append(planning.MorningReadiness, readinessNotes(*morning)...)
+	}
+	if len(planning.MorningReadiness) == 0 {
+		planning.MorningReadiness = append(planning.MorningReadiness, "Morning weather looks routine based on the available hourly forecast.")
+	}
+
+	for _, daypart := range summary.Dayparts {
+		if daypart.Name == "overnight" || daypart.Name == "evening" {
+			continue
+		}
+		planning.CommuteSchoolWorkdayConcerns = appendUnique(planning.CommuteSchoolWorkdayConcerns, concernNotes(daypart)...)
+	}
+	for _, alert := range summary.AlertOverlaps {
+		if alert.Event != "" {
+			planning.CommuteSchoolWorkdayConcerns = appendUnique(planning.CommuteSchoolWorkdayConcerns, "Active alert to plan around: "+alert.Event+".")
+		}
+	}
+	if len(planning.CommuteSchoolWorkdayConcerns) == 0 {
+		planning.CommuteSchoolWorkdayConcerns = append(planning.CommuteSchoolWorkdayConcerns, "No major commute, school, or workday weather concerns stand out in the available forecast.")
+	}
+
+	planning.OutdoorPlanning = append(planning.OutdoorPlanning, outdoorPlanningNotes(summary.Dayparts)...)
+	if len(planning.OutdoorPlanning) == 0 {
+		planning.OutdoorPlanning = append(planning.OutdoorPlanning, "No standout outdoor weather constraints are evident in the available forecast.")
+	}
+
+	for _, name := range []string{"afternoon", "evening"} {
+		daypart := daypartNamed(summary.Dayparts, name)
+		if daypart != nil {
+			planning.LateDayChangeWatch = appendUnique(planning.LateDayChangeWatch, lateDayWatchNotes(*daypart)...)
+		}
+	}
+	if len(planning.LateDayChangeWatch) == 0 {
+		planning.LateDayChangeWatch = append(planning.LateDayChangeWatch, "Watch for forecast timing or intensity adjustments later today.")
+	}
+
+	return planning
+}
+
 func buildTomorrowPlanning(summary *forecast.DailySummary) *TomorrowPlanning {
 	planning := &TomorrowPlanning{}
 	morning := daypartNamed(summary.Dayparts, "morning")
@@ -84,6 +134,18 @@ func buildTomorrowPlanning(summary *forecast.DailySummary) *TomorrowPlanning {
 	return planning
 }
 
+func outdoorPlanningNotes(dayparts []forecast.DaypartSummary) []string {
+	windows := buildOutdoorWindows(dayparts)
+	var notes []string
+	if windows.Best != nil {
+		notes = append(notes, fmt.Sprintf("Best outdoor window: %s (%s).", titleWord(windows.Best.Daypart), strings.Join(windows.Best.Reasons, ", ")))
+	}
+	if windows.Worst != nil && (windows.Best == nil || windows.Worst.Daypart != windows.Best.Daypart) {
+		notes = append(notes, fmt.Sprintf("Toughest outdoor window: %s (%s).", titleWord(windows.Worst.Daypart), strings.Join(windows.Worst.Reasons, ", ")))
+	}
+	return appendUnique(nil, notes...)
+}
+
 func readinessNotes(daypart forecast.DaypartSummary) []string {
 	notes := []string{}
 	if daypart.MaxPrecipitationProbability != nil && daypart.MaxPrecipitationProbability.Value >= 50 {
@@ -104,6 +166,27 @@ func readinessNotes(daypart forecast.DaypartSummary) []string {
 	return appendUnique(nil, notes...)
 }
 
+func lateDayWatchNotes(daypart forecast.DaypartSummary) []string {
+	notes := []string{}
+	prefix := titleWord(daypart.Name)
+	if prefix == "" {
+		prefix = "Late-day"
+	}
+	if daypart.MaxPrecipitationProbability != nil && daypart.MaxPrecipitationProbability.Value >= 30 {
+		notes = append(notes, fmt.Sprintf("%s precipitation timing may shift; current peak is near %.0f%%.", prefix, daypart.MaxPrecipitationProbability.Value))
+	}
+	if daypart.PeakWindGust != nil && daypart.PeakWindGust.Value >= 30 {
+		notes = append(notes, fmt.Sprintf("%s gusts may reach %.0f mph.", prefix, daypart.PeakWindGust.Value))
+	}
+	if daypart.Indicators.Snow || daypart.Indicators.Ice {
+		notes = append(notes, prefix+" wintry weather could affect late-day travel.")
+	}
+	if len(daypart.AlertOverlaps) > 0 {
+		notes = append(notes, prefix+" alert timing could affect late-day plans.")
+	}
+	return appendUnique(nil, notes...)
+}
+
 func concernNotes(daypart forecast.DaypartSummary) []string {
 	notes := []string{}
 	prefix := titleWord(daypart.Name)