package mountain_pass

import (
	"context"
	"database/sql"
	"os"

	"github.com/martinlehoux/kagamigo/kcore"
	"github.com/schollz/progressbar/v3"
)

// ProgressBarEnabled reports whether stderr is attached to a terminal, so the
// progress bar only renders for interactive runs and stays out of piped or
// redirected output.
func ProgressBarEnabled() bool {
	fi, err := os.Stderr.Stat()
	return err == nil && fi.Mode()&os.ModeCharDevice != 0
}

func FetchOSM() {
	err := FetchFrancePBF("france-latest.osm.pbf")
	kcore.Expect(err, "failed to download France OSM PBF")
}

func ExtractOSM(db *sql.DB, pbfPath string) {
	var bar *progressbar.ProgressBar
	_, err := ExtractMountainPasses(context.Background(), pbfPath, db, func(current, total int64) {
		if bar == nil && ProgressBarEnabled() {
			bar = progressbar.DefaultBytes(total, "Extracting mountain passes")
		}
		if bar != nil {
			bar.Set64(current)
		}
	})
	if bar != nil {
		bar.Finish()
	}
	kcore.Expect(err, "failed to extract mountain passes from OSM")
}