package report

import (
	"fmt"

	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
	"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
)

func dailyDefinition() Definition {
	return Definition{
		ID:                    Daily,
		Name:                  "Daily Report",
		PromptID:              "weather.daily_generated_text",
		GenerationMode:        GenerationModeGeneratedTextTemplate,
		TemplateID:            "daily",
		GeneratedTextSchemaID: "daily",
		ComparisonStrategy:    CompareSameValidDate,
		ArtifactGroup:         "daily",
		BatchOutputName:       "daily.md",
		DistributorPathTemplates: []string{
			"daily/{valid_start_date}/{run_id}.md",
			"daily/{valid_start_date}/index.md",
		},
		Generated:          true,
		CompatiblePriorIDs: []ID{Daily},
		Modules:            dailyModules(),
		resolve:            resolveDaily,
		runIDDisambiguator: validStartDateRunIDDisambiguator,
	}
}

func dailyModules() []module.ConfigItem {
	return moduleItems(
		module.Metadata,
		module.CurrentConditions,
		module.NarrativeForecast,
		module.DerivedDailySummary,
		module.DerivedDaypartSummaries,
		module.PrecipTiming,
		module.AlertDigest,
		module.SPCConvectiveOutlooks,
		module.AreaForecastDiscussion,
		module.SPCConvectiveDiscussion,
		module.WeatherStory,
		module.OutdoorWindows,
		module.DailyPlanning,
		module.HourlyForecast,
	)
}

func resolveDaily(req ResolveRequest) (timeutil.Period, error) {
	if req.Date.IsZero() {
		return timeutil.Period{}, fmt.Errorf("daily report requires an explicit date")
	}
	return timeutil.CivilDay(req.Date, req.Location), nil
}

func validStartDateRunIDDisambiguator(resolved Resolved) string {
	if resolved.ValidPeriod.Start.IsZero() {
		return ""
	}
	location, err := timeutil.LoadLocation(resolved.Timezone)
	if err != nil {
		return resolved.ValidPeriod.Start.Format(timeutil.DateLayout)
	}
	return resolved.ValidPeriod.Start.In(location).Format(timeutil.DateLayout)
}