package reporting

import (
	"encoding/json"
	"fmt"
	"os"
	"time"
)

type ProcessReport struct {
	Phase                        string     `json:"phase"`
	Status                       string     `json:"status"`
	Operation                    string     `json:"operation"`
	TranscriptPath               string     `json:"transcript_path"`
	GlossaryPath                 string     `json:"glossary_path"`
	OutputPath                   string     `json:"output_path,omitempty"`
	Modules                      []string   `json:"modules"`
	StartedAt                    time.Time  `json:"started_at"`
	CompletedAt                  *time.Time `json:"completed_at,omitempty"`
	ErrorMessage                 string     `json:"error_message,omitempty"`
	ErrorPhase                   string     `json:"error_phase,omitempty"`
	InputSegmentCount            *int       `json:"input_segment_count,omitempty"`
	NormalizedSegmentCount       *int       `json:"normalized_segment_count,omitempty"`
	NormalizationMerges          *int       `json:"normalization_merges,omitempty"`
	NormalizationIDReassignments *int       `json:"normalization_id_reassignments,omitempty"`
	NormalizationSkipped         struct {
		DifferentSpeakers  *int `json:"different_speakers,omitempty"`
		GapTooLarge        *int `json:"gap_too_large,omitempty"`
		DurationExceeded   *int `json:"duration_exceeded,omitempty"`
		TokenLimitExceeded *int `json:"token_limit_exceeded,omitempty"`
	} `json:"normalization_skipped,omitempty"`
}

func WriteProcessReport(path string, report ProcessReport) error {
	payload, err := json.MarshalIndent(report, "", "  ")
	if err != nil {
		return fmt.Errorf("failed to marshal process report JSON: %w", err)
	}
	payload = append(payload, '\n')

	if err := os.WriteFile(path, payload, 0o644); err != nil {
		return fmt.Errorf("failed to write report JSON file %q: %w", path, err)
	}
	return nil
}