// Reproject explicitly listed, backed-up mileage days using the live writer SQL.
package main

import (
	"context"
	"database/sql"
	"encoding/json"
	"flag"
	"fmt"
	_ "github.com/go-sql-driver/mysql"
	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/envelope"
	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/stats"
	"os"
	"time"
)

func main() {
	input := flag.String("input", "", "JSON array of vin/date/protocol")
	flag.Parse()
	b, e := os.ReadFile(*input)
	must(e)
	var rows []struct {
		VIN      string `json:"vin"`
		Date     string `json:"date"`
		Protocol string `json:"protocol"`
	}
	must(json.Unmarshal(b, &rows))
	db, e := sql.Open("mysql", os.Getenv("MYSQL_DSN"))
	must(e)
	defer db.Close()
	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Minute)
	defer cancel()
	for i, r := range rows {
		must(stats.ProjectDailyMileage(ctx, db, r.VIN, r.Date, envelope.Protocol(r.Protocol)))
		if (i+1)%500 == 0 {
			fmt.Printf("projected=%d/%d\n", i+1, len(rows))
		}
	}
	fmt.Printf("completed=%d\n", len(rows))
}
func must(e error) {
	if e != nil {
		fmt.Fprintln(os.Stderr, e)
		os.Exit(1)
	}
}