Files
weatherreporter/internal/briefing/derived_daypart_summaries_module.go

111 lines
4.1 KiB
Go

package briefing
import (
"fmt"
"strings"
"unicode"
"gitea.maximumdirect.net/eric/weatherreporter/internal/forecast"
"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
)
type DerivedDaypartSummaryModule struct {
Date string `json:"date,omitempty"`
PeriodBegins string `json:"period_begins,omitempty"`
PeriodEnds string `json:"period_ends,omitempty"`
TempRangeF string `json:"temp_range_f,omitempty"`
ApparentTempRangeF string `json:"apparent_temp_range_f,omitempty"`
MaxPopPercent *int `json:"max_pop_percent,omitempty"`
MaxPopTime string `json:"max_pop_time,omitempty"`
MaxWindGustMph *int `json:"max_wind_gust_mph,omitempty"`
MaxWindGustTime string `json:"max_wind_gust_time,omitempty"`
DominantCondition string `json:"dominant_condition,omitempty"`
NotableConditions []string `json:"notable_conditions,omitempty"`
Snow bool `json:"snow,omitempty"`
Ice bool `json:"ice,omitempty"`
Fog bool `json:"fog,omitempty"`
Heat bool `json:"heat,omitempty"`
Cold bool `json:"cold,omitempty"`
Wind bool `json:"wind,omitempty"`
RelevantAlertCount int `json:"relevant_alert_count,omitempty"`
}
func buildDerivedDaypartSummariesModule(ctx ModuleContext, _ any) (*module.Output, error) {
if len(ctx.Derived.DaypartSummaries) == 0 {
return nil, fmt.Errorf("daypart summary facts are required")
}
value := map[string]DerivedDaypartSummaryModule{}
prefixDates := multipleSummaryDates(ctx.Derived.DailySummaries)
for _, daypart := range ctx.Derived.DaypartSummaries {
key := daypartKey(daypart, prefixDates)
value[key] = derivedDaypartSummaryValue(daypart, ctx.Timezone)
}
return &module.Output{ID: module.DerivedDaypartSummaries, StanzaName: "derived_daypart_summaries", Value: value}, nil
}
func derivedDaypartSummaryValue(daypart forecast.DaypartSummary, timezone string) DerivedDaypartSummaryModule {
value := DerivedDaypartSummaryModule{
Date: localDateLabel(daypart.Period.Start, timezone),
PeriodBegins: friendlyPeriodBeginsLabel(daypart.Period, timezone),
PeriodEnds: friendlyPeriodEndsLabel(daypart.Period, timezone),
TempRangeF: rangeLabel(daypart.Temperature),
ApparentTempRangeF: daypartApparentRangeLabel(daypart.ApparentTemperature),
DominantCondition: daypart.DominantCondition,
NotableConditions: append([]string(nil), daypart.NotableConditions...),
Snow: daypart.Indicators.Snow,
Ice: daypart.Indicators.Ice,
Fog: daypart.Indicators.Fog,
Heat: daypart.Indicators.Heat,
Cold: daypart.Indicators.Cold,
Wind: daypart.Indicators.Wind,
RelevantAlertCount: len(daypart.AlertOverlaps),
}
if daypart.MaxPrecipitationProbability != nil {
value.MaxPopPercent = roundedInt(&daypart.MaxPrecipitationProbability.Value)
value.MaxPopTime = clockLabel(daypart.MaxPrecipitationProbability.Time, timezone)
}
if daypart.PeakWindGust != nil {
value.MaxWindGustMph = roundedInt(&daypart.PeakWindGust.Value)
value.MaxWindGustTime = clockLabel(daypart.PeakWindGust.Time, timezone)
}
return value
}
func multipleSummaryDates(summaries []forecast.DailySummary) bool {
seen := map[string]struct{}{}
for _, summary := range summaries {
seen[summary.Date] = struct{}{}
}
return len(seen) > 1
}
func daypartKey(daypart forecast.DaypartSummary, prefixDate bool) string {
key := normalizedKey(daypart.Name)
if key == "" {
key = "unnamed"
}
if !prefixDate {
return key
}
return daypart.Period.Start.Format(timeutil.DateLayout) + "_" + key
}
func normalizedKey(value string) string {
lower := strings.ToLower(strings.TrimSpace(value))
var out strings.Builder
lastUnderscore := false
for _, r := range lower {
if unicode.IsLetter(r) || unicode.IsDigit(r) {
out.WriteRune(r)
lastUnderscore = false
continue
}
if !lastUnderscore {
out.WriteByte('_')
lastUnderscore = true
}
}
return strings.Trim(out.String(), "_")
}