package state

import (
	"time"

	"gitea.maximumdirect.net/eric/weatherreporter/internal/briefing"
	"gitea.maximumdirect.net/eric/weatherreporter/internal/forecast"
	"gitea.maximumdirect.net/eric/weatherreporter/internal/report"
	"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
)

const MetadataSchemaVersion = "weatherreporter.metadata.v1"

type Metadata struct {
	SchemaVersion      string                    `json:"schemaVersion"`
	RunID              string                    `json:"runId"`
	MetadataPath       string                    `json:"-"`
	ReportID           report.ID                 `json:"reportId"`
	Variant            string                    `json:"variant,omitempty"`
	PromptID           string                    `json:"promptId"`
	GeneratedAt        time.Time                 `json:"generatedAt"`
	Timezone           string                    `json:"timezone"`
	ValidPeriod        timeutil.Period           `json:"validPeriod"`
	Location           *briefing.LocationContext `json:"location,omitempty"`
	SourceLocationID   string                    `json:"sourceLocationId,omitempty"`
	SourceLocation     string                    `json:"sourceLocation,omitempty"`
	Sources            []briefing.SourceMetadata `json:"sources,omitempty"`
	SourceWarnings     []forecast.SourceWarning  `json:"sourceWarnings,omitempty"`
	BriefingPath       string                    `json:"briefingPath"`
	DataPackagePath    string                    `json:"dataPackagePath"`
	PreflightPath      string                    `json:"preflightPath"`
	RenderedReportPath string                    `json:"renderedReportPath,omitempty"`
}

func BuildMetadata(resolved report.Resolved, briefingPackage briefing.Package, paths ArtifactPaths) Metadata {
	metadata := resolved.Metadata()
	return Metadata{
		SchemaVersion:      MetadataSchemaVersion,
		RunID:              metadata.RunID,
		MetadataPath:       paths.Metadata,
		ReportID:           metadata.ReportID,
		Variant:            briefingPackage.Metadata.Variant,
		PromptID:           metadata.PromptID,
		GeneratedAt:        metadata.GeneratedAt,
		Timezone:           metadata.Timezone,
		ValidPeriod:        metadata.ValidPeriod,
		Location:           copyLocation(briefingPackage.Metadata.Location),
		SourceLocationID:   briefingPackage.Metadata.SourceLocationID,
		SourceLocation:     briefingPackage.Metadata.SourceLocation,
		Sources:            briefingPackage.Metadata.Sources,
		SourceWarnings:     briefingPackage.Metadata.SourceWarnings,
		BriefingPath:       paths.Briefing,
		DataPackagePath:    paths.DataPackage,
		PreflightPath:      paths.Preflight,
		RenderedReportPath: paths.RenderedReport,
	}
}

func copyLocation(location *briefing.LocationContext) *briefing.LocationContext {
	if location == nil {
		return nil
	}
	copied := *location
	return &copied
}