Refactor to separate each module and report into an individual file

internal/briefing/derived_daily_summary_module.go

@@ -0,0 +1,88 @@
+package briefing
+
+import (
+	"fmt"
+
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/forecast"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
+)
+
+type DerivedDailySummaryModule struct {
+	Date               string   `json:"date,omitempty"`
+	HighTempF          *int     `json:"high_temp_f,omitempty"`
+	LowTempF           *int     `json:"low_temp_f,omitempty"`
+	MaxPopPercent      *int     `json:"max_pop_percent,omitempty"`
+	MaxPopWindow       string   `json:"max_pop_window,omitempty"`
+	FirstPrecipHour    string   `json:"first_precip_hour,omitempty"`
+	LastPrecipHour     string   `json:"last_precip_hour,omitempty"`
+	ThunderMentioned   bool     `json:"thunder_mentioned"`
+	MaxWindGustMph     *int     `json:"max_wind_gust_mph,omitempty"`
+	HeatIndexMaxF      *int     `json:"heat_index_max_f,omitempty"`
+	DominantConditions []string `json:"dominant_conditions,omitempty"`
+	Hazards            []string `json:"hazards,omitempty"`
+}
+
+func buildDerivedDailySummaryModule(ctx ModuleContext, _ any) (*module.Output, error) {
+	summary := ctx.Derived.FirstDailySummary()
+	if summary == nil {
+		return nil, fmt.Errorf("daily summary facts are required")
+	}
+	value, err := derivedDailySummaryValue(*summary, ctx.Derived.PrecipTiming, ctx.Timezone)
+	if err != nil {
+		return nil, err
+	}
+	return &module.Output{ID: module.DerivedDailySummary, StanzaName: "derived_daily_summary", Value: value}, nil
+}
+
+func derivedDailySummaryValue(summary forecast.DailySummary, timing forecast.PrecipTiming, timezone string) (DerivedDailySummaryModule, error) {
+	value := DerivedDailySummaryModule{
+		Date:             summary.Date,
+		ThunderMentioned: timing.ThunderMentioned,
+	}
+	conditions := map[string]struct{}{}
+	hazards := map[string]struct{}{}
+	var temperature forecast.Range
+	var apparent forecast.Range
+	var maxPop *forecast.TimedValue
+	var maxGust *forecast.TimedValue
+	var maxPopWindow timeutil.Period
+	for _, daypart := range summary.Dayparts {
+		addRange(&temperature, daypart.Temperature)
+		addRange(&apparent, daypart.ApparentTemperature)
+		if daypart.MaxPrecipitationProbability != nil {
+			if maxPop == nil || daypart.MaxPrecipitationProbability.Value > maxPop.Value {
+				copied := *daypart.MaxPrecipitationProbability
+				maxPop = &copied
+				maxPopWindow = daypart.Period
+			}
+		}
+		maxTimedValue(&maxGust, daypart.PeakWindGust)
+		if daypart.DominantCondition != "" {
+			conditions[daypart.DominantCondition] = struct{}{}
+		}
+		for _, hazard := range hazardsForIndicators(daypart.Indicators) {
+			hazards[hazard] = struct{}{}
+		}
+	}
+	for _, alert := range summary.AlertOverlaps {
+		if alert.Event != "" {
+			hazards[alert.Event] = struct{}{}
+		}
+	}
+	value.HighTempF = roundedInt(temperature.Max)
+	value.LowTempF = roundedInt(temperature.Min)
+	value.HeatIndexMaxF = roundedInt(apparent.Max)
+	if maxPop != nil {
+		value.MaxPopPercent = roundedInt(&maxPop.Value)
+		value.MaxPopWindow = periodClockLabel(maxPopWindow, timezone)
+	}
+	if maxGust != nil {
+		value.MaxWindGustMph = roundedInt(&maxGust.Value)
+	}
+	value.FirstPrecipHour = timedClockLabel(timing.FirstPrecipitation, timezone)
+	value.LastPrecipHour = timedClockLabel(timing.LastPrecipitation, timezone)
+	value.DominantConditions = sortedSet(conditions)
+	value.Hazards = sortedSet(hazards)
+	return value, nil
+}